Dr. Fred W. McDowell Research Scientist and Senior Lecturer (now Retired) Department of Geological Sciences, The University of Texas at Austin Ph.D., 1966, Columbia University, New York City, USA. E-mail: mcdowell@jsg.utexas.edu Research Interests: History of Cretaceous-Tertiary magmatism in western Mexico, Isotope geochemistry of continental magmatic arcs. Honors and Awards: Houston Oil and Minerals Faculty Excellence Award, 1984. Professional Society Memberships: Sigma Xi – Member Geological Society of America - Fellow Selected papers: McDowell, F. W. and Kulp, J. L. (1967) Age of Intrusion and Ore Deposition in the Robinson Mining District of Nevada: Economic Geology, 62, pp. 905-909. McDowell, F. W. and Schmid, R. (1968) Potassium-Argon Ages from the Valle d'Ossola Section of the Ivrea-Verbano Zone (Northern Italy); Schweiz. Mineralogische und Petrographische Mitteilungen, 48, pp. 205-210. McDowell, F. W. and Kulp, J. L. (1969) Potassium-Argon Dating of the Idaho Batholith: Geol. Soc. Amer. Bull., 80, pp. 2379-2382. Gygi, R. and McDowell, F. W. (1970) Potassium-Argon age of Glauconites form a biochronologically dated Upper Jurassic sequence of Northern Switzerland; Eclogae Geol. Helv., 63, pp. 111-118. Signer, P. and McDowell, F. W. (1970) On-Line Ar extraction system for rapid high-precision routine analysis: Eclogae Geol. Helv., 63, pp. 311-321. McDowell, F. W. (1970) Potassium-argon ages from the Ceneri Zone, Southern Swiss Alps: Contr. Mineral. and Petrol., 28, pp. 165-182. McDowell, F. W. (1971) Potassium-argon ages of igneous rocks from the western United States: Isochron/West no. 2, pp. 1-16. McDowell, F. W., Wilson, J. A. and Clark, J. (1973) K-Ar Dates for Biotite From Two Paleontologically Significant Localities: Duchesne River Formation, Utah and Chadron Formation, South Dakota: Isochron/West, no. 7, p. 11-12. 1 Fries, C., Jr., Rincon-Orta, C., Silver, L. T., McDowell, F. W., Solorio-Munguia, J., SchmitterVillada, E., and de Cserna, A. (1974) Nuevas Aportaciones a la Geochronologia de la Faja Tectonica Oaxaquena: Bol. Asoc. Mexicana Geol. Petroleros, v. XXVI, no. 4-6, pp. 157-182. Ferrusquia-Villafranca, I., Wilson, J. A., Denison, R. E., McDowell, F. W. and Solorio-Munguia, J. (1974) Tres Edades Radiometricas Oligocenicas y Miocenicas de Rocas Volcanicas de Las Regiones Mixteca Alta y Valle de Oaxaca, Estado de Oaxaca: Bol. Asoc. Mexicana Geol. Petroleros, v. XXVI, no. 4-6, p. 249-262. DeLong, S. E. and McDowell, F. W. (1975) K-Ar ages from the Near Islands, Western Aleutian Islands, Alaska: Indication of a Mid-Oligocene Thermal Event: Geology, v. 3, no. 12, p. 691694. McDowell, F. W. and Keizer, R. P. (1977) Timing of Mid-Tertiary Volcanism in the Sierra Madre Occidental between Durango City and Mazatlán, Mexico: Geol. Soc. Amer. Bull., 88, p. 1479-1487. DeLong, S. E., Fox, P. J., and McDowell, F. W. (1978) Subduction of the Kula Ridge at the Aleutian Trench: Geol. Soc. Amer. Bull., 89, p. 83-95. McDowell, F. W., Duex, T. W., Henry, C. D., and Long, L. E. (1978) Age and Strontium Isotope Chemistry of the Sierra Madre Occidental Volcanic Province, Western Mexico: in Short Papers of the Fourth International Conference on Geochronology, Cosmochronology, and Isotope Geology: U. S. Geological Survey Open-File Report 78-701, p. 289-291. McDowell, F. W. (1979) Potassium-argon Dating in the Trans-Pecos Texas Volcanic Field: in Cenozoic Geology of the Trans-Pecos Volcanic Field of Texas, Univ. of Texas at Austin Bureau of Economic Geology Guidebook 19, p. 10-18. Roden, M. F., Smith, D., and McDowell, F. W. (1979) Age and Extent of Potassic Volcanism on the Colorado Plateau: Earth and Planetary Science Lett., 43, p. 279-284. DeLong, S. E., Fox, P. J., and McDowell, F. W. (1979) Subduction of the Kula Ridge at the Aleutian Trench: Reply to Discussion: Geol. Soc. Amer. Bull., 90, p. 700-702. Ritchie, A. W. and McDowell, F. W. (1979) K-Ar ages of Plutonic and Volcanic Rocks from the Volcanic Highlands of Guatemala Northwest of Guatemala City: Isochron/West, no. 25, p. 34. McDowell, F. W. and Clabaugh, S. E. (1979) Ignimbrites of the Sierra Madre Occidental and their Relation to the Tectonic History of Western Mexico: Geol. Soc. Amer. Spec. Paper 180, p. 113-123. Parker, D. F. and McDowell, F. W. (1979) K-Ar geochronology of Oligocene volcanic rocks, Davis and Barrilla Mountains, Texas: Geol. Soc. Amer. Bull., 90, p. 1100-1110. Comer, J. B., Naeser, C. W. and McDowell, F. W. (1980) Fission-track ages of Zircon from Jamaican Bauxite and Terra Rossa: Econ. Geol., 75, p. 117-121. Keller, P. C., Bockoven, N. T., and McDowell, F. W. (1982) Tertiary Volcanic History of the Sierra Del Gallego Area, Chihuahua, Mexico: Geol. Soc. Amer. Bull., 93, p. 303-314. McDowell, F. W. (1983) K-Ar dating: Incomplete extraction of radiogenic argon from alkali feldspar: Isotope Geoscience, 1, p. 119-126. Henry, C. D., Price, J. G., and McDowell, F. W. (1983) Presence of the Rio Grande Rift in West Texas and Chihuahua, El Paso Geological Society Publication, v. 15, p. 108-118. Mauger, R. L., McDowell, F. W. and Blount, J. G. (1983) Grenville-age Precambrian Rocks of the Los Filtros Area, Near Aldama, Chihuahua, Mexico, El Paso Geological Society Publication, v. 15, p. 165-168. Megaw, P. K. M. and McDowell, F. W. (1983) Geology and Geochronology of Volcanic Rocks of the Sierra Pastorias area, Chihuahua, Mexico, El Paso Geological Society Publication, v. 15, p. 195-203. Swanson, E. R. and McDowell, F. W. (1984), Calderas of the Sierra Madre Occidental Volcanic Field Western Mexico: Journal of Geophysical Research, v. 89, p. 8787-8799. 2 McDowell, F. W., Lehman, D. H., Gucwa, P. R., and Fritz, D. (1984) Glaucophane Schists and Ophiolites of the northern California Coast Ranges: Isotopic Ages and their Tectonic Implications: Geological Society of America Bulletin, v. 95, p. 1373-1382. McDowell, F. W. (1984) K-Ar dating: Incomplete extraction of radiogenic argon from alkali feldspar-Reply: Isotope Geoscience, v. 2, p. 377-378. McDowell, F. W. and Clabaugh, S. E. (1984) The igneous history of the Sierra Madre Occidental and its relation to the tectonic evolution of western Mexico: Univ. Nac. Auton. Mexico, Inst. Geol., Revista, v. 5, no. 2, p. 195-206. Swanson, E. R. and McDowell, F. W. (1985) Geology and Geochronology of the Tomochic caldera, Chihuahua, Mexico: Geological Society of America Bulletin, v. 96, p. 1477-1482. Henry, C. D., McDowell, F. W., Price, J. G., and Smith, R. C. (1986) Compilation of potassiumargon ages of Tertiary igneous rocks, Trans-Pecos Texas: The University of Texas at Austin, Bureau of Economic Geology, Geological Circular 86-2, 34 p. Henry, C. D. and McDowell, F. W. (1986) Geochronology of magmatism in the Tertiary volcanic field, Trans-Pecos Texas, in Price, J. G. and others, eds., Igneous geology of Trans-Pecos Texas: The University of Texas at Austin, Bureau of Economic Geology Guidebook 23, p. 99122. Barker, D. S., Henry, C. D. and McDowell, F. W. (1986) Pine Canyon caldera, Big Bend National Park. A mildly peralkaline magmatic system, in Price, J. G. and others, eds., Igneous geology of Trans-Pecos Texas: The University of Texas at Austin, Bureau of Economic Geology Guidebook 23, p. 266-285. McDowell, F. W., Roden, M. F. and Smith, D. (1986) Comments on "Tectonic implications of the age, composition and origin of lamprophyre dikes, Navajo volcanic field, Arizona", by A. W. Lauglin, M. J. Aldrich, Jr., M. Shafiqullah, and J. Husler: Earth and Planetary Science Letters, v. 80, no. 3/4, p. 415-417. Wark, D. A., Kempter, K. A., and McDowell, F. W. (1990) Evolution of waning calcalkalic magmatism, northern Sierra Madre Occidental: Geol. Soc. America Bull., v. 102, p. 15551564. McDowell, F.W. (1990) [contributor] North American Continent-Ocean Transect H1, La Paz to Saltillo, northwestern and northern Mexico: Mitre-Salazar, G.F. and Roldán-Quintana, J., Geological Society of America, Decade of North American Geology, 2 map sheets, 8p. text. Aguirre-Díaz, G. and McDowell, F.W. (1991) The volcanic section at Nazas, Durango, Mexico, and the possibility of widespread Eocene volcanism within the Sierra Madre Occidental: Jour. Geophys. Res., v.96, p. 13373-13388. Ferrusquía-Villafranca, I. and McDowell, F.W. (1991) The Cenozoic sequence of selected areas in southeastern Mexico; its bearing in understanding regional basin development there: Memoría, Convención sobre la Evolución Geológica de México, Primer Congreso Mexicano de Minerología, p. 45-50. McDowell, F.W. and Mauger, R.L. (1992) Magmatism in central Chihuahua since 70 Ma: El Paso Geological Society, Guidebook for the 1992 Field Conference, p. 119-126. Wark, D.A., McDowell, F.W., and Kempter, K., and Swanson, E.R. (1992) Geology and magmatic history of the Tomochic volcanic center, Sierra Madre Occidental: El Paso Geological Society, Guidebook for the 1992 Field Conference, p. 139-148. Roldán-Quintana, J. and McDowell, F.W. (1992) The Báucarit Formation in the Rio Yaqui area, Municipality of Onavas, Sonora: El Paso Geological Society, Guidebook for the 1992 Field Conference, p. 223-228. McDowell, F.W. (1993) The volcanic section near Yécora, Sonora, and its regional significance: Libreto-Guia Excursiones del III Simposio de la Geología de Sonora y Areas Adyacentes, p. 185-194. 3 Aguirre-Díaz, G.J., and McDowell, F.W. (1993) Nature and timing of faulting and synextensional magmatism in the southern Basin and Range, central-eastern Durango, Mexico: Geological Society of America Bulletin, v. 105, p. 1435-1444. McDowell, F.W., and Mauger, R. L. (1994) K-Ar and U-Pb zircon chronology of Late Cretaceous and Tertiary magmatism in central Chihuahua State, Mexico: Geological Society of America Bulletin, v.106, p. 118-132. Megaw, P.K.M., McDowell, F.W., and Roth, B. (1994) Refinement of the age of certain Tertiary land mollusks (Gastropoda: Pulmonata) based on new U-Pb zircon ages from the Sierra Santa Eulalia, Chihuahua, Mexico: Malacological Review, v. 27, p. 109. McDowell, F.W., McMahon, T.P., Warren, P.Q., and Cloos, M. (1996) Pliocene Cu-Au bearing igneous intrusions of the Gunung Bijih (Ertsberg) district, Irian Jaya, Indonesia: K-Ar geochronology: Journal of Geology, v. 104, p. 327-340. Smith, R.D., Cameron, K.L., McDowell, F.W., Niemeyer, S., and Sampson, D.E. (1996) Generation of voluminous silicic magmas and formation of mid-Cenozoic crust beneath northcentral Mexico: Evidence from ignimbrites, associated lavas, deep crustal granulites, and mantle pyroxenites: Contributions to Mineralogy and Petrology, v. 123, p. 375-389. Davis, L.L., Smith, D., McDowell, F.W., Walker, N.W., and Borg, L.E. (1996) Eocene potassic volcanism at Two Buttes, Colorado, with implications for Cenozoic tectonics and magma generation in the western United States: Geological Society of America Bulletin, v. 108, p. 1567-1579. Kappelman, J., Sen, S., Fortelius, M., Duncan, A., Alpagut, B., Crabaugh, J., Gentry, A., Lunkka, J.P., McDowell, F., Solounias, N., Viranta, S., and Werdelin, L. (1996) Chronology and Biostratigraphy of the Miocene Sinap Formation of Central Turkey: Chapter 6 in The Evolution of Western Eurasian Neogene Mammal Faunas, R.L. Bernor, V. Fahlbusch, and H.W. Mittmann, eds. Columbia University Press, New York. McDowell, F.W., Roldán-Quintana, J., and Amaya-Martínez (1997) Interrelationship of sedimentary and volcanic deposits associated with Tertiary extension in Sonora, Mexico: Geological Society of America Bulletin, v. 109, p. 1349-1360. Pérez-Venzor, J.A., Aranda-Gómez, J.J., McDowell, F., and Solorio-Munguía (1997) Geología del Volcán Palo Huérfano, Guanajuato, México: Revista Mexicana de Ciencias Geológicas, v. 13, no. 2, p. 174-183. Aranda-Gómez, J.J., Henry, C.D., Luhr, J.F., and McDowell, F.W., (1997) Cenozoic volcanism and tectonics in NW Mexico - a transect across the Sierra Madre Occidental volcanic field and observations on extension related volcanism in the southern Basin and Range and Gulf of California tectonic provinces, in Aguirre-Díaz, G.J., Aranda-Gómez, J.J., Carrasco-Nuñez, G., and Ferrara, L., eds., Magmatism and tectonics in central and northwestern Mexico - a selection of the 1997 IAVCEI General Assembly excursions: México, D.F., Universidad Nacional Autónoma de México, Instituto de Geología, Excursion 11, p. 41-84. Aranda-Gómez, J.J., and McDowell, F. W. (1998) Paleogene extension in the southern Basin and Range Province: Syn-depositional tilting of Eocene red beds and Oligocene volcanic rocks in the Guanajuato Mining District, Mexico: International Geology Review, v. 40, p. 116134. McDowell, F.W., Housh, T.B., and Wark, D.A., (1999) The crust beneath the Sierra Madre Occidental volcanic field as inferred from isotopic studies at the Tomochic volcanic center, western Chihuahua, Mexico: Geological Society of America Bulletin, v. 111, p. 823-830. Mora-Alvarez, G., and McDowell, F.W., (2000) Miocene volcanism during late subduction and early rifting in the Sierra Santa Ursula of western Sonora, Mexico: Geological Society of America Special Paper 334, p. 123-141. Aguirre-Díaz, G.J., Urrutia-Fucuguauchi, J., Soler-Arechalde, A.M., and McDowell, F.W. (2000), Stratigraphy, K-Ar ages, and magnetostratigraphy of the Acambay Graben, central Mexican volcanic belt: Geological Society of America Special Paper 334, p. 167-178. 4 Aguirre-Díaz, G.J., and McDowell, F.W., (2000) Volcanic evolution of the Amealco Caldera, central Mexico: Geological Society of America Special Paper 334, p. 179-193. McDowell, F.W., Roldán-Quintana, J., and Connelly, J. N. (2001) Duration of Laramide magmatic arc development in east-central Sonora, Mexico: Geological Society of America Bulletin, v. 113, p. 521-531. Bandy, W.L., Urrutia-Fucugauchi, J., McDowell, F.W., and Morton-Bermea, O. (2001) K-Ar ages of four mafic lavas from the central Jalisco volcanic lineament: Supporting evidence for a NW migration of volcanism within the Jalisco Block, western Mexico: Geofisica Internacional, v. 40, p. 259-269. Roldán-Quintana, J., Calmus, T., McDowell, F.W., Amaya-Martínez, R., and Bellon, H., 2003, Geology of northern Sierra Madre Occidental, eastern Sonora and western Chihuahua, Mexico: in Geologic transects across Cordilleran Mexico, Guidebook for Field trips of the 99th meeting of the Cordilleran Section of the Geological Society of America, Mexico, D.F., April 57, 2003: Universidad Nacional Autónoma de México, Instituto de Geología, Publicatión Especial 1, Field Trip 3, p. 33-52. Aranda-Gómez, J.J., Henry, C.D., Luhr, J.F., and McDowell, F.W., 2003, Cenozoic volcanictectonic development of northwestern Mexico- a transect across the Sierra Madre Occidental volcanic field and observations on extension-related magmatism in the southern Basin and Range and Gulf of California tectonic provinces: in Geologic transects across Cordilleran Mexico, Guidebook for Field trips of the 99th meeting of the Cordilleran Section of the Geological Society of America, Mexico, D.F., April 5-7, 2003: Universidad Nacional Autónoma de México, Instituto de Geología, Publicatión Especial 1, Field Trip 3, p. 71-121. Kappleman, J., Duncan, A., Feseha, A., Lunnka, J.-P., Eckart, D., McDowell, F.W., Ryan, T.M., and Swisher III, C.C. (2003) Chronology: Chapter 2 in Geology and Paleontology of the Miocene Sinap Formation, Turkey, Fortelius, M., Kappleman, J., Sen, S., and Berner, R.L., eds., Columbia University Press, New York, p. 41-86. Henry, C.D., McDowell, F.W., and Silver, L.T. (2003) Geology and geochronology of granitic batholithic complex, Sinaloa, Mexico: Implications for Cordilleran magmatism and tectonics, in Johnson, S.E., Paterson, S.R., Fletcher, J.M., Girty, G.H., Kimbrough, D.L., and MartínBarajas, A., eds., Tectonic evolution of northwestern Mexico and the southwestern USA: Boulder, Colorado, Geological Society of America Special Paper 374., p. 237-273. Mora-Klepeis, G., and McDowell, F.W. (2004) Late Miocene calc-alkalic volcanism in northwestern Mexico: An expression of rift or subduction-related magmatism?: Journal of South American Earth Sciences, v. 17, p. 297-310. McDowell, F.W., McIntosh, W.C., and Farley, K.A. (2005) A precise 40Ar-39Ar reference age for the Durango apatite (U-Th)/He and fission-track dating standard: Chemical Geology, v. 214, p. 249-263. Housh, T.B., and McDowell, F.W. (2005) Isotope provinces in Laramide igneous rocks of northwestern Mexico (Chihuahua and Sonora) and their relation to basement configuration, in Anderson, T.H., Nourse, J.A., McKee, J.W., and Steiner, M.B., eds., The Mojave-Sonora megashear hypothesis: Development, assessment,and alternatives: Geological Society of America Special Paper 293, p.671-692. Swanson, E.R., Kempter, K.A., McDowell, F.W., and McIntosh, W.C. (2006) Major ignimbrites and volcanic centers of the Copper Canyon area: A view into the core of Mexico’s Sierra Madre Occidental: Geosphere, v. 2, 125-141. Lehman, T.M., McDowell, F.W., and Connelly, J.N. (2006) First isotopic (U-Pb) age for the Late Cretaceous Alamosaurus vertebrate fauna of West Texas, and its significance as a link between two faunal provinces: Journal of Vertebrate Paleontology, v. 26, p. 922-928. Aranda-Gómez, J.J., Molina-Garza, R., McDowell, F.W., Vassalo-Morales, L.F., Ortega-Rivera, M.A., Solorio-Munguía, J.G., and Aguillón-Robles, A. (2007) The relationships between 5 volcanism and extension in the Mesa Central: the case of Pinos, Zacatecas, Mexico: Revista Mexicana de Ciencias Geológicas, v. 24, p. 216-233. McDowell, F.W., compiler (2007) Geologic transect across the northern Sierra Madre Occidental volcanic field, Chihuahua and Sonora, Mexico: Geological Society of America Digital Map and Chart Series 6, 70 p. and map. Cather, S.M., Dunbar, N.W., McDowell, F.W., McIntosh, W.C., and Scholle, P.A. (2009) Climate forcing by iron fertilization from repeated ignimbrite eruptions: the icehouse-silicic large igneous province (SLIP) hypothesis: Geosphere, v.5, p. 315-324. McDowell, F.W. and Chuchla, R.J. (2010) Geologic map of the Manuel Benavides area, Chihuahua, Mexico: Geological Society of America Map and Chart 099, map with text 20p. McDowell, F.W. and McIntosh, W.C. (2012) Timing of intense magmatic episodes in the northern and central Sierra Madre Occidental volcanic field: Geosphere, v. 8, p. 1505-1526. Dr. Chirstopher D. Henry Research Geologist Nevada Bureau of Mines and Geology University of Nevada Reno Ph.D. 1975, The University of Texas at Austin, USA. E-mail: chenry@unr.edu Research Interests: Geologic mapping, Igneous geology and geochemistry, Geochronology, Volcanology, Economic geology. Professional Work Experience: Research Geologist (May 1993-present), Nevada Bureau of Mines and Geology, Mackay School of Mines, University of Nevada Reno Principal research is understanding magmatic, tectonic, and mineralization processes through geologic mapping, geochemistry, and geochronology. Senior Research Scientist (September 1990–April 1993); Research Scientist (September 1979-August 1990); and Research Scientist Associate (December 1974–August 1979), Bureau of Economic Geology, The University of Texas at Austin. Selected Papers: Henry, C.D., and John, D.A., 2013, Magmatism, ash-flow tuffs, and calderas of the ignimbrite flareup inthe western Nevada volcanic field, Great Basin, USA: Geosphere, v. 9, p. 951-1008. Henry, C.D., Hinz, N.H., Faulds, J.E., Colgan, J.P., John, D.A., Brooks, E.R., Cassel, E.J., Garside, L.J.,Davis, D.A., and Castor, S.B., 2012, Eocene-early Miocene paleotopography of the Sierra Nevada –Great Basin – Nevadaplano based on widespread ash-flow tuffs and paleovalleys: Geosphere, v. 8, p. 1-27. 6 Henry, C.D., McIntosh, W.C., McDowell, F.W., Lipman, P.W., Chapin, C.E., 2012, The Cenozoic ignimbrite flareup in western North America: Distribution, timing, volume, and tectonic relations: Geological Society of America Abstracts with Programs, v. 44, no. 3, p. 21. Henry, C.D., McGrew, A.J., Colgan, J.P., Snoke, A.W., and Brueseke, M.E., 2011, Timing, distribution, amount, and style of Cenozoic extension in the northern Great Basin, in Lee, J., and Evans, J.P., eds., Geologic Field Trips to the Basin and Range, Rocky Mountains, Snake River Plain, and Terranes of the U.S. Cordillera: Geological Society of America Field Guide 21, p. 27-66. Vikre, P.G., and Henry, C.D., 2011, Quartz-alunite alteration cells in the ancestral southern Cascades magmatic arc: Geological Society of Nevada, Great Basin Evolution and Metallogeny, 2010 Symposium Volume, Reno/Sparks, Nevada, p. 701-745. Henry, C.D., McIntosh, W.C., McDowell, F.W., Lipman, P.W., Chapin, C.E., and Richardson, M.T., 2010, Distribution, timing, and controls of the Mid-Cenozoic ignimbrite flareup in western North America: Geological Society of America Abstracts with Programs, v. 42, no. 5, p. 144. Colgan, J.P., and Henry, C.D., 2009, Rapid middle Miocene collapse of the Sevier orogenic plateau innorth-central Nevada: International Geology Review, v. 51, p. 920-961. Cousens, B., Prytulak, J., Henry, C.D., Alcazar, A., and Brownrigg, T., 2008, The geology and geochemistry of the Mio-Pliocene ancestral Cascades arc, northern Sierra Nevada, California/Nevada: The roles of the upper mantle, subducting slab, and the Sierra Nevada lithosphere: Geosphere, v. 4, p. 829-853. Faulds, J.E., and Henry, C.D., 2008, Tectonic influences on the spatial and temporal evolution of the Walker Lane: An incipient transform fault along the evolving Pacific – North American plate boundary, in Spencer, J.E., and Titley, S.R., eds., Ores and orogenesis: Circum-Pacific tectonics, geologic evolution, and ore deposits: Arizona Geological Society Digest 22, p. 437470. Henry, C.D., 2008, Ash-flow tuffs and paleovalleys in northeastern Nevada: Implications for Eocene paleogeography and extension in the Sevier hinterland, northern Great Basin: Geosphere, v. 4, p. 1-35 John, D.A., Henry, C.D., and Colgan, J.P., 2008, Magmatic and tectonic evolution of the Caetano caldera, north-central Nevada: A tilted mid-Tertiary eruptive center and source of the Caetano Tuff: Geosphere, v. 4, p. 75-106. Ressel, M.W., and Henry, C.D., 2006, Igneous geology of the Carlin trend, Nevada: Development of the Eocene plutonic complex and significance for Carlin-type Gold deposits: Economic Geology, v. 101, p. 347-383. Aranda-Gomez, J.J., Housh, T.B., Luhr, J.F., Henry, C.D., Becker, T., and Chavez-Cabello, G., 2005, Reactivation of the San Marcos fault during mid-to late-Tertiary extension, Chihuahua, Mexico, in Anderson, T.H., Nourse, J.A., McKee, J.W., and Steiner, M.B., eds., The MojaveSonora megashear hypothesis: Development, assessment, and alternatives: Geological Society of America Special Paper 393, p. 509-521. Henry, C.D., McDowell, F.W., and Silver, L.T., 2003, Geology and geochronology of granitic batholithic complex, Sinaloa, México: Implications for Cordilleran magmatism and tectonics, in Johnson, S.E., Paterson, S.R., Fletcher, J.M., Girty, G.H., Kimbrough, D.L., and MartinBarajas, A., eds., Tectonic evolution of northwestern México and the southwestern USA: Boulder, Colorado, Geological Society of America Special Paper 374, p. 237-274. Aranda-Gómez, J.J, Henry, C.D., Luhr, J.F., McDowell, F.W., 2003, Cenozoic volcanism and tectonics in NW Mexico–a transect across the Sierra Madre Occidental volcanic field and observations on extension related magmatism in the southern Basin and Range and Gulf of California tectonic provinces, in Geologic Transects Across Cordilleran Mexico, Guidebook for the 99th Annual Meeting of the Cordilleran Section of the Geological Society of America: 7 Universidad Nacional Autonoma de Mexico, Insituto de Geologia, Publicacion Especial 1, p. 71-121. Aranda-Gomez, J.J., Luhr, J.F., Housh, T.B., Connor, C.B., Becker, T., and Henry, C.D., 2003, Synextensional, Plio-Pleistocene eruptive activity in the Camargo volcanic field, Chihuahua, Mexico: Geological Society of America Bulletin, v. 115, p. 298-313. Castor, S.B., Boden, D.R., Henry, C.D., Cline, J.S., Hofstra, A.H., McIntosh, W.C., Tosdal, R.M., Wooden, J.P., 2003, Geology of the Eocene Tuscarora volcanic-hosted, epithermal precious metal district, Elko County, Nevada: Economic Geology, v. 98, p. 339-366. Luhr, J.F., Henry, C.D., Housh, T.B., Aranda-Gómez, J.J., and McIntosh, W.C., 2001, Early extensionrelated hawaiites from the southern Basin and Range province: Geology and petrology of the Rodeo and Nazas volcanic fields, Durango (Mexico): Geological Society of America Bulletin, v. 113, p. 760-773. Aranda-Gómez, J.J., Henry, C.D., and Luhr, J.F., 2000, Evolucion tectonomagmatica post paleocenica de la Sierra Madre Occidental de la porcion meridional de la provincia tectonica de Cuencas y Sierras, Mexico: Boletin de la Sociedad Geologica Mexicana, v. 53, p. 59-71. Castor, S.B., and Henry, C.D., 2000, Geology, geochemistry, and origin of volcanic rock-hosted uranium deposits in northwestern Nevada and southeastern Oregon: Ore Geology Reviews, v. 16, p. 1-40. Henry, C.D., and Aranda-Gómez, J.J., 2000, Plate interactions control middle-late Miocene, proto-Gulf and Basin and Range extension in the southern Basin and Range: Tectonophysics, v. 318, p. 1-26. Aranda-Gómez, J.J, Henry, C.D., Luhr, J.F., McDowell, F.W., 1997. Cenozoic volcanism and tectonics in NW Mexico–a transect across the Sierra Madre Occidental volcanic field and observations on extension related magmatism in the southern Basin and Range and Gulf of California tectonic provinces. In: Aguirre-Díaz, G.J., Aranda-Gómez, J.J., Carrasco-Nuñez, G., Ferrari, L. (Eds.), Magmatism and tectonics in the central and northwestern Mexico – a selection of the 1997 IAVCEI General Assembly excursions. Univ. Nac. Autó. México, Inst. Geol., México, D.F., Excursión 11, p. 41-84 (reprint of IAVCEI guidebook). Henry, C.D., Elson, H.B., McIntosh, W.C., Heizler, M.T., and Castor, S.B., 1997, Brief duration of hydrothermal activity at Round Mountain, Nevada determined from 40Ar/39Ar geochronology: Economic Geology, v. 92, p. 807-826. Henry, C.D., Castor, S.B., and Elson, H.B., 1996, Geology and 40Ar/39Ar geochronology of volcanism and mineralization at Round Mountain, Nevada, in Coyner, A.R., and Fahey, P.L., eds., Geology and Ore Deposits of the American Cordillera: Geological Society of Nevada Symposium Proceedings, Reno/Sparks, Nevada, April 1995, p. 283-307. James, E.W., and Henry, C.D., 1993, Pb isotopes of ore deposits in Trans-Pecos Texas and northeastern Chihuahua, Mexico: Basement, igneous, and sedimentary wallrock sources of metals: Economic Geology, v. 88, p. 934-947. James, E.W., and Henry, C.D., 1993, Southeastern extent of the North American craton in Texas and northern Chihuahua as revealed by Pb isotopes: Geological Society of America Bulletin, v. 105, p. 116-126. Henry, C.D., and Aranda-Gomez, J.J., 1992, The real southern Basin and Range: Mid- to late Cenozoic extension in Mexico: Geology, v. 20, p. 701–704. Henry, C.D., Price, J.G., and James, E.W., 1991, Mid-Cenozoic stress evolution and magmatism in the southern Cordillera, Texas and Mexico: transition from continental arc to intraplate extension: Journal of Geophysical Research, v. 96, no. B8, p. 13545–13560. Henry, C.D., 1989, Late Cenozoic Basin and Range structure in western Mexico adjacent to the Gulf of California: Geological Society of America Bulletin, v. 101, p. 1147–1156. Henry, C.D., and Fredrikson, Goran, 1987, Geology of part of southern Sinaloa, Mexico, adjacent to the Gulf of Mexico: Geological Society of America, Map and Chart Series MCH0 63, 14 p. 8 Henry, C.D., and Price, J.G., 1986, Early Basin and Range development in Trans-Pecos Texas and adjacent Chihuahua: magmatism and orientation, timing, and style of extension: Journal of Geophysical Research, v. 91, no. B6, p. 6213–6224. Dr. Luca Ferrari Titular C Researcher Centro de Geociencias, UNAM Ph.D., 1992, Departament of Earth Sciences of the University of Milan, Italy. E-mail: luca@geociencias.unam.mx President fo the Cordilleran Section of the Geological Society of America (2010-2011) Fellow member of the Geological Society of America (2008) Memebr of the Evaluation Committee of Basic Science projects, CONACYT (2005-2007) President of the Mexican Geophysical Union (2004-2005). Researcher of the National Research System, Level 3 (since 2008) Treasurer of the Central Section of the Mexican Science Academy (2013-2014) Member of the Mexican Science Academy (since 1999) Editor in Chief of the Revista Mexicana de Ciencias Geologicas (1998 – 2005 y 2012 up today) Member of the Editorial Board of the Geological Society of America Bulletin (2007-2014) Member of the Editorial Board of Geology (1998 – 2003) Research Interests: Geodynamics, Geology and Regional Tectonics, Magmatism and Tectonics Relationships, Oil and Energy. Research Fieldwork in: Italy, Mexico, Colombia, Ecuador, Guatemala, Argelia, Kazakstan. Scientific production 85 articulos arbitrados (Nature, EPSL, Tectonics, Geology, Journal of Petrolgy, GSA Bulletin, Chemical Geology, Geosphere, Lithosphere, Contrib. Min. Pet., JVGR, Tectonophiscs, entre otras) 3 guias de excursiones geologicas y 4 mapas geológicos Citas: 2,625 Directed thesis Ph.D., 5; M.Sc., 5; A.B., 10 Selected Papers Complete list at: https://sites.google.com/site/lucaferrariwebsite/home/publicaciones Ferrari, L., López-Martínez, M., Orozco-Esquivel, M.Y., Bryan, S.E., Duque-Trujillo, J., Lonsdale, P., Solari, L., 2013. Late Oligocene to middle Miocene rifting and syn-extensional magmatism 9 in the southwestern Sierra Madre Occidental, Mexico: the beginning of the Gulf of California rift. Geosphere, v. 9, n. 5, p. 1161-1200 Bryan S.E., Ferrari, L., 2013. Large Igneous Provinces and Silicic Large Igneous Provinces: Progress in our understanding over the last 25 years. Geological Society of America Bulletin, invited review, v. 125, no. 7-8, p. 1053-1078, doi:10.1130/B30820.1 Manea, V.C., Manea, M., Ferrari, L., 2013. A geodynamical perspective on the subduction of Cocos and Rivera plates beneath Mexico and Central America. Tectonophysics, Invited review paper, doi:10.1016/j.tecto.2012.12.039 Ferrari, L., Orozco-Esquivel, M.T., Manea, V., Manea, M., 2012. The dynamic history of the Trans-Mexican Volcanic Belt and the Mexico subduction zone. Tectonophysics, Invited review paper, doi:10.1016/j.tecto.2011.09.018. Martini, M., Ferrari, L., 2011. Style and chronology of the Late Cretaceous shortening in the Zihuatanejo area (south-western Mexico): implications for the timing of the Mexican Laramide deformation. Geosphere, v. 7, 1469-1479, doi: 10.1130/GES00743.1. Serrano, L., Ferrari, L., López Martínez, M., Petrone, C.M., Jaramillo, C.M., 2011. An integrative geologic, geochronologic and geochemical study of Gorgona Island, Colombia: Implications for the formation of the Caribbean Large Igneous Province. Earth and Planetary Science Letters, v. 309, p. 324-336, doi:10.1016/j.epsl.2011.07.011. Cerca M., Ferrari L., Corti G., Bonini M., Manetti P., 2010. Analogue model of inversion tectonics explaining the structural diversity of Late Cretaceous shortening in southwestern Mexico, Lithosphere, v. 2; no. 3; p. 172-187; DOI: 10.1130/L48.1. Martini M., Ferrari L., López-Martínez M., Cerca-Martínez M., Valencia V., Serrano-Duran L., 2009. Cretaceous-Eocene magmatism and Laramide deformation in south-western Mexico: no role for terrane accretion. Geological Society of America Memoir "Backbone of the Americas", p. 151-182. Petrone C., Ferrari L., 2008. Quaternary adakite—Nb-enriched basalt association in the western Trans-Mexican Volcanic Belt: is there any slab melt evidence? Contributions to Mineralogy and Petrology, v. 156, p. 73-89. Bryan S., Ferrari L., Allen C., Petrone C., Ramos-Rosique A., Campbell I., 2008. New insights into large volume rhyolite generation at the mid-Tertiary Sierra Madre Occidental Province, Mexico, revealed by U-Pb geochronology. Journal of Petrology, v. 49, p. 47-77. Cerca-Martínez M., Ferrari L., López-Martínez M., Martiny B., Iriondo A., 2007. Late Cretaceous shortening and early Tertiary shearing in the central Sierra Madre del Sur, southern Mexico: insights into the evolution of the Caribbean-North America plate interaction. Tectonics, vol. 26, No. 3, TC3007, 10.1029/2006TC001981. Ferrari L., Valencia-Moreno M., and Bryan S., 2007. Magmatism and tectonics of the Sierra Madre Occidental and its relation with the evolution of western margin of North America. GSA Special Paper 442, p. 1-39. Orozco-Esquivel M.T., Petrone C.M., Ferrari L., Tagami T., Manetti P., 2007. Geochemical and isotopic variability controlled by slab detachment in a subduction zone with varying dip: The eastern Trans-Mexican Volcanic Belt. Lithos, v. 93, p.149-174. Jödicke H., Jording A., Ferrari L., Arzate J., Mezger K., Rüpke L., 2006. Fluids release from the subducted Cocos plate and partial melting of the crust deduced from magnetotelluric studies in Southern Mexico: Implications for the generation of volcanism and subduction dynamics. Journal of Geophysical Research, v. 111, B08102, doi:10.1029/2005JB003739. Ferrari L., Tagami T., Eguchi M., Orozco-Esquivel M.T., Petrone C.M., Jacobo-Albarrán J., López-Martínez M., 2005. Geology, geochronology and tectonic setting of late cenozoic volcanism along the Southwestern Gulf of Mexico: The eastern alkaline province revised. Journal of Volcanology and Geothermal Research, v. 146, p. 284-306. Ferrari L., 2004. Slab detachment control on volcanic pulse and mantle heterogeneity in Central Mexico. Geology, v. 32, p. 77-80. 10 Ferrari L., Petrone C.M., Francalanci L., Tagami T., Eguchi M., Conticelli S., Manetti P., Venegas-Salgado S., 2003. Geology of the San Pedro-Ceboruco graben, western TransMexican Volcanic Belt. Revista Mexicana de Ciencias Geológicas, v. 20, p. 165-181. Camprubi A., Ferrari L., Cosca M., Cardellach E., and Canals A., 2003. Ages of epithermal deposits in Mexico: Regional significance and links with the evolution of Tertiary volcanism. Economic Geology, v. 98, p. 1029-1037. Ferrari L., López-Martínez M., Rosas-Elguera J., 2002. Ignimbrite flare up and deformation in the southern Sierra Madre Occidental, western Mexico: implications for the late subduction history of the Farallon plate. Tectonics, v.21, n. 4, 17-1/24. Ferrari L., Petrone C.M., Francalanci L., 2001. Generation of OIB-type volcanism in the western Trans-Mexican Volcanic Belt by slab rollback, astenosphere infiltration and variable fluxmelting. Geology, v. 29, p. 507-510. Dr. José Jorge Aranda Gómez Senior research scientist Centro de Geociencias, UNAM PhD 1981, University of Oregon, USA. E-mail: jjag@geciencias.unam.mx Research interests: Regional geology and tectonics of central and northern Mexico, origin of intra-plate type Cenozoic volcanism in central and northern Mexico, phreatomagmatic volcanism. Honors and awards: SNI 3, PRIDE D Research interests: Regional geology and tectonics of central and northern Mexico, origin of intra-plate type Cenozoic volcanism in central and northern Mexico, phreatomagmatic volcanism. Recent publications (2005-2014): Carrasco-Nuñez, G., Righter, K., Chesley, J., Siebert, L., and Aranda-Gómez, J.J., 2005, Contemporaneous eruption of calc-alkaline and alkaline lavas in a continental arc (Eastern Mexican Volcanic Belt): chemically heterogeneous but isotopically homogenous source: Contributions to Mineralogy and Petrology, v.150 núm.4, p.423-440 Aranda-Gómez, J.J., Housh, T.B., Luhr, J.F., Henry, C.D., Becker, T., and Chávez-Cabello, G., 2005, Reactivation of the San Marcos Fault during mid-to-late Tertiary extension, Chihuahua, Mexico, in Anderson, T.H., Nourse, J.A., McKee, J.W., and Steiner, M.B., eds., The MojaveSonora megashear hypothesis: Development, assessment, and alternatives: Geological Society of America Special Paper 393, p.509-521. 11 Chávez-Cabello, G., Aranda-Gómez, J.J., Molina-Garza, R.S., Arvizu-Gutiérrez, I.R., GonzálezNaranjo, G. A., 2005, La falla de San Marcos: una estructura jurásica de basamento multireactivada del noreste de México: Boletín de la Sociedad Geológica Mexicana, v. LVII, núm. 1, p. 27-52. Aranda-Gómez, J. J., Luhr, J. F., Housh, T. B., Valdez-Moreno, G., and Chávez-Cabello, G., 2005, El vulcanismo de intraplaca del Cenozoico tardío en el centro y norte de México: una revisión: Boletín de la Sociedad Geológica Mexicana, v. LVII, n. 3, p. 187-225 Luhr, J.F., Kimberly, P., Siebert, L, Aranda-Gómez, J.J., Housh, T.B., and Kysar Mattietti, G., 2006, México’s Quaternary volcanic rocks: Insights from the MEXPET petrological and geochemical database, in Siebe, C., Macías, J.L., and Aguirre-Díaz, G.J., eds., NeogeneQuaternary continental margin volcanism: A perspective from Mexico: Geological Society of America Special Paper 402, p. 1–44. Ramos-Leal, J. A., López-Loera, H., Martínez-Ruíz, V. J., and Aranda-Gómez, J. J., 2007, Sucesión de eventos y geometría de la parte central del acuífero del graben de Villa de Reyes (San Luis Potosí, México) inferida a partir de datos geoeléctricos: Revista Mexicana de Ciencias Geológicas, v. 24, no. 1, p. 31-46. Aranda-Gómez, J.J., Luhr, J.F., Housh, T.B., Valdez-Moreno, G., and Chávez-Cabello, G., 2007, Late-Cenozoic intraplate-type volcanism in central and northern México: A review, in AlanizAlvarez, S.A., and Nieto-Samaniego, A.F., Geology of Mexico: Celebrating the Centenary of the Geological Society of Mexico, Geological Society of America, Special Paper, v.442 , p. 93-128. [PUBLICADO EN CASTELLANO EN 2005] Chávez-Cabello, G., Aranda-Gómez, J.J., Molina-Garza, R.S., Cossío-Torres, T., ArvizuGutiérrez, I.R., and González-Naranjo, G.A., 2007, The San Marcos Fault: A Jurassic multireactivated basement structure in north-eastern Mexico, in Alaniz-Alvarez, S.A., and NietoSamaniego, A.F., Geology of Mexico: Celebrating the Centenary of the Geological Society of Mexico, Geological Society of America, Special Paper, v. 442, p. 261-286. [PUBLICADO EN CASTELLANO EN 2005] Aranda-Gómez, J.J., Molina-Garza, R.S., McDowell, F.W. Vassallo-Morales, L.F., OrtegaRivera, M.A., Solorio-Mungía, J.G., and Aguillón-Robles, A., 2007, The relationships between volcanism and extensión in the Mesa Central: the case of Pinos, Zacatecas, Mexico, Revista Mexicana de Ciencias Geológicas, v. 24, núm. 2, p. 216-233. López-Loera, H., Aranda-Gómez, J.J., Arzate-Flores, J.A., and Molina-Garza, R.S., 2008, Geophysical surveys of the Joya Honda Maar (México) and surroundings; volcanic implications: Journal of Volcanology and Geothermal, v. 170, núm. 3-4, 135-152. Martínez-Reyes, J., Mitre-Salazar, L.M., and Aranda-Gómez, J.J., 2008, Estratigrafía y estructura del Valle, In Arzate-Flores, J.A., Cortés, A., and Lozano, A. eds, El Valle de Querétaro y su geoentorno, Querétaro, CENTRO DE GEOCIENCIAS (UNAM) y CONCYTEQ, p.45-63 Molina-Garza, R.S. Geissman, J., Wawrzyniec, T., Weber, B., López-Martínez, M., and ArandaGómez, J.J., 2009. An integrated magnetic and geological study of cataclasite-dominated pseudotachylytes in the Chiapas Massif, Mexico: a snapshot of stress orientation following slip. Geophysical Journal International, 177(3): 891-912. Aranda-Gómez, J.J., Chacón-Baca, E., Charles-Polo, M., Solorio-Munguía, J.G., VegaGonzález, M., Moreno-Arredondo, A., and Origel-Gutiérrez, G., 2009, Collapse structures at the bottom of a recently desiccated maar lake: Rincón de Parangueo maar, Valle de Santiago, México, Asociación Geológica Argentina, Publicaciones Especiales, Resúmenes y eventos, Serie D, n.12, p.3-4 (IAVCEI, 3rd International Maar Conference, Malargüe, Argentina, April 14-17, 2009). López-Loera, H., and Aranda-Gómez, J.J., 2009, Aeromagnetic survey applied to the solution of volcanic and tectonic problems in the region of Joya Honda, San Luis Potosí, central México: Asociación Geológica Argentina, Publicaciones Especiales, Resúmenes y eventos, Serie D, 12 n.12, p.3-4 (IAVCEI, 3rd International Maar Conference, Malargüe, Argentina, April 63-64, 2009). Housh, T.B., Aranda-Gómez, J.J., and Luhr, J.F., 2010. Isla Isabel (Nayarit, México): Quaternary alkalic basalts with mantle xenoliths erupted in the mouth of the Gulf of California. Journal of Volcanology and Geothermal Research, v.197, p.85-107. Aranda-Gómez, J.J., Housh, T.B., Luhr, J.F., Noyola-Medrano, M.C., and Rojas-Beltrán, M.A., 2010. Origin and formation of neck in a basin landform: Examples from the Camargo volcanic field, Chihuahua (México). Journal of Volcanology and Geothermal Research, v.197, 123-132 Oviedo-Padrón, E., Aranda-Gómez, J.J., Chávez-Cabello, G., Molina-Garza, R.S., Iriondo, A., González-Becerra, P. C., Cervantes-Corona, J.A., and Solorio-Munguía, J.G., 2010, Tectónica de la Sierra Cuesta El Infierno y su posible relación con fallas reactivadas cerca del levantamiento de Plomosas, Chihuahua, México, Revista Mexicana de Ciencias Geológicas, v.27, núm. 3, p.389-411. Valdez-Moreno, G., Aranda-Gómez, J. J., and Ortega-Rivera, M. A., 2011, Geoquímica y petrología del campo volcánico de Ocampo, Coahuila, México: Boletín de la Sociedad Geológica Mexicana, v. 63, no. 2, p. 235-252. Chávez-Cabello, G., Torres-Ramos, J.A., Porras-Vázquez, N.D., Cossio-Torres, T., and ArandaGómez, J.J., 2011, Evolución estructural del frente tectónico de la Sierra Madre Oriental en el Cañón Santa Rosa, Linares, Nuevo León: Boletín de la Sociedad Geológica Mexicana, v. 63, núm. 2, p.253-270 González-Naranjo, G., Molina-Garza, R.S., Aranda-Gómez, J.J., Tristán-González, M., Iriondo, A., and Bellón, H., 2011, Paleomagnetismo y edad de la Ignimbrita Panalillo Superior, Campo Volcánico de San Luis Potosí, México: Boletín de la Sociedad Geológica Mexicana 64(3):387-409. Aranda-Gómez, J.J., Dávila-Harris, P., Vassallo-Morales, L.F., Godchaux, M., Bonnichsen, B., Martínez-Reyes J., Aguirre-Díaz, G., and Ortega-Rivera, M.A., 2012, Geology and tectonics of the southeastern portion of the Sierra de Guanajuato: The Geological Society of America, Field Guide 25, 135-62. Carranco-Lozada, S. E., Ramos-Leal, J. A., Noyola-Medrano, C., Morán-Ramírez, J., LópezAlvarez, B., López-Quiroz, P., Aranda-Gómez, J.J., 2013, Effects of change of use of land on an aquifer ina tectonically active region." Natural Science 5(2A): 259-267. doi:10.4236/ns.2013.52A038 Carranza-Castañeda, O., Aranda-Gómez, J.J., Wang, X. e Iriondo, A., 2013, The early-late Hemphillian (Hh2) faunal assemblage from Juchipila Basin, State of Zacatecas, México and its biostratigraphic correlation with other Hemphillian faunas in central Mexico: Contributions in Science and Science Series of the Natural History Museum Los Angeles County 521: 1340. Aranda-Gómez, J. J., Levresse, G., Pacheco-Martínez, J., Ramos-Leal, J. A., Carrasco-Núñez, G., Chacón-Baca, E., González-Naranjo, G., Chávez-Cabello, G., Vega-González, M., OrigelGutiérrez, G., and Noyola-Medrano, C., 2013, Active sinking at the bottom of the Rincón de Parangueo Maar (Guanajuato, México) and its probable relation with subsidente faults at Salamanca and Celaya: Boletín de la Sociedad Geológica Mexicana, 65(1): 169-188 Wang, X., Carranza-Castañeda, O., and Aranda-Gómez, J.J., 2013, A transitional skunk, Buisnictis matabatos new species (Mephitidae, Carnivora), from Baja California Sur and the role of southern refugium in skunk evolution, Journal Systematic Paleontology, DOI: 10.1080/14772019.2013.776647 Corbo-Camargo, F., Arzate, J.A., Álvarez, R., and Aranda-Gómez, J.J., 2013, "Subduction of the Rivera Plate beneath the JB as imaged by MT data, Revista Mexicana de Ciencias Geológicas, 30(2): 268-281. 13