Table of Contents
doi:10.2973/odp.proc.sr.139.1994
Volume 139—Scientific Results
Section 1: Site Geology and Geophysics
1. Seismic Structure of Middle Valley near Sites 855–858, Leg 139,
Juan De Fuca Ridge
K.M.M. Rohr and U. Schmidt
doi:10.2973/odp.proc.sr.139.204.1994
2. Low Crustal Magnetization of the Middle Valley Sedimented Rift
Inferred from Sea-Surface Magnetic Anomalies
R.G. Currie and E.E. Davis
doi:10.2973/odp.proc.sr.139.201.1994
3. High-Resolution Magnetic Surveys over the Middle Valley Mounds,
Northern Juan de Fuca Ridge
M.A. Tivey
doi:10.2973/odp.proc.sr.139.205.1994
Section 2: Biostratigraphy
4. Planktonic Foraminiferal Biostratigraphy and Paleoceanography of
Late Quaternary Turbidite Sequences at Holes 856A, 857A, and 857C,
Leg 139
C.A. Brunner
doi:10.2973/odp.proc.sr.139.206.1994
5. Late Quaternary Calcareous Nannofossils from the Sedimented
Middle Valley of the Juan de Fuca Ridge, Leg 139
S. Mao and S.W. Wise, Jr.
doi:10.2973/odp.proc.sr.139.208.1994
Section 3: Igneous Petrology
6. Petrology of Igneous Rocks at Middle Valley, Juan de Fuca Ridge
D.S. Stakes and J.M. Franklin
doi:10.2973/odp.proc.sr.139.212.1994
Section 4: Sedimentology and Sediment Geochemistry
7. Sedimentary and Diagenetic Structures and Textures in Turbiditic
and Hemiturbiditic Strata as Revealed by Whole-Core X-Radiography,
Middle Valley, Northern Juan de Fuca Ridge
C.A. Rigsby, R.A. Zierenberg, and P.A. Baker
doi:10.2973/odp.proc.sr.139.224.1994
8. Mineralogy of Hydrothermally Altered Sediments and Igneous Rocks
at Sites 856–858, Middle Valley, Juan de Fuca Ridge, Leg 139
V. Kurnosov, I. Murdmaa, T. Rosanova, G. Kashintzev, V. EroshchevShak, and S. Krasnov
doi:10.2973/odp.proc.sr.139.267.1994
9. Mineralogic and Petrographic Records of Sediment-Fluid Interaction
in the Sedimentary Sequence at Middle Valley, Juan de Fuca Ridge,
Leg 139
M.D. Buatier, A.-M. Karpoff, M. Boni, G.L. Früh-Green, and J.A.
McKenzie
doi:10.2973/odp.proc.sr.139.216.1994
10. Mineralogy and Mineral Chemistry of Hydrothermally Altered
Sediment, Middle Valley, Juan de Fuca Ridge
M.I. Leybourne and W.D. Goodfellow
doi:10.2973/odp.proc.sr.139.220.1994
11. Geochemistry of Hydrothermally Altered Sediment, Middle Valley,
Northern Juan de Fuca Ridge
W.D. Goodfellow and J.M. Peter
doi:10.2973/odp.proc.sr.139.219.1994
12. Stable Isotope and Geochemical Record of Convective
Hydrothermal Circulation in the Sedimentary Sequence of Middle
Valley, Juan de Fuca Ridge, Leg 139
G.L. Früh-Green, J.A. McKenzie, M. Boni, A.M. Karpoff, and M. Buatier
doi:10.2973/odp.proc.sr.139.217.1994
13. A Note on the Carbon, Sulfur, and Nitrogen Contents of
Hydrothermally Altered Sediments, Middle Valley, Juan de Fuca Ridge
P.A. Baker and S.L. Cross
doi:10.2973/odp.proc.sr.139.214.1994
14. Geochemistry of Carbonate Nodules and Cements and Implications
for Hydrothermal Circulation, Middle Valley, Juan de Fuca Ridge
P.A. Baker, S.L. Cross, and S.J. Burns
doi:10.2973/odp.proc.sr.139.215.1994
15. Organic Matter and Carbon Isotope Composition of Carbonate
Nodules and Associated Sediments from Middle Valley, Leg 139
M. Boni, B.R.T. Simoneit, G.L. Früh-Green, R.N. Leif, and J.A.
McKenzie
doi:10.2973/odp.proc.sr.139.235.1994
16. Diagenesis of Amorphous Silica in Middle Valley, Juan de Fuca
Ridge
C.G. Wheat and J.S. Tribble
doi:10.2973/odp.proc.sr.139.225.1994
Section 5: Sulfide Petrology and Geochemistry
17. Chemical Composition and Formation of a Massive Sulfide Deposit,
Middle Valley, Northern Juan de Fuca Ridge (Site 856)
S. Krasnov, T. Stepanova, and M. Stepanov
doi:10.2973/odp.proc.sr.139.230.1994
18. Mineralogy and Sulfur Isotopic Composition of the Middle Valley
Massive Sulfide Deposit, Northern Juan de Fuca Ridge
R.C. Duckworth, A.E. Fallick, and D. Rickard
doi:10.2973/odp.proc.sr.139.228.1994
19. Helium and Sulfur Isotopes of Sulfide Minerals from Middle Valley,
Northern Juan de Fuca Ridge
F.M. Stuart, R. Duckworth, G. Turner, and P.F. Schofield
doi:10.2973/odp.proc.sr.139.227.1994
Section 6: Fluid Inorganic Geochemistry
20. Geochemistry of Hydrothermal Vent Fluids from Middle Valley,
Juan de Fuca Ridge
D.A. Butterfield, R.E. McDuff, J. Franklin, and C.G. Wheat
doi:10.2973/odp.proc.sr.139.266.1994
21. Fluid Inclusion Petrography and Microthermometry of the Middle
Valley Hydrothermal System, Northern Juan de Fuca Ridge
J.M. Peter, W.D. Goodfellow, and M.I. Leybourne
doi:10.2973/odp.proc.sr.139.233.1994
22. A Technique for Obtaining Pore-Water Chemical Composition from
Indurated and Hydrothermally Altered Sediment and Basalt: The
Ground Rock Interstitial Normative Determination (Grind)
C.G. Wheat, J. Boulègue, and M.J. Mottl
doi:10.2973/odp.proc.sr.139.234.1994
Section 7: Organic Geochemistry
23. Dissolved Organic Carbon in Interstitial Waters from Sediments of
Middle Valley, Leg 139
B. Ran and B.R.T. Simoneit
doi:10.2973/odp.proc.sr.139.238.1994
24. Lipid/Bitumen Maturation by Hydrothermal Activity in Sediments of
Middle Valley, Leg 139
B.R.T. Simoneit
doi:10.2973/odp.proc.sr.139.237.1994
25. Thermogenic and Bacterial Hydrocarbon Gases (Free and Sorbed)
in Middle Valley, Juan de Fuca Ridge, Leg 139
M.J. Whiticar, E. Faber, J.K. Whelan, and B.R.T. Simoneit
doi:10.2973/odp.proc.sr.139.241.1994
26. Alkenones in Sediments of Middle Valley, Leg 139: Application as
Thermal Sensors
B.R.T. Simoneit, F.G. Prahl, R.N. Leif, and S.-Z. Mao
doi:10.2973/odp.proc.sr.139.239.1994
27. Time-Temperature Histories of Kerogen and Mineral Ammonia from
Leg 139 (Middle Valley) Sediments
J.K. Whelan, J. Seewald, L. Eglinton, and F.P. Miknis
doi:10.2973/odp.proc.sr.139.240.1994
28. Thermal Evolution of Sediments from Leg 139, Middle Valley, Juan
de Fuca Ridge: An Organic Petrological Study
S. Mao, L.B. Eglinton, J. Whelan, and L. Liu
doi:10.2973/odp.proc.sr.139.209.1994
29. Bacterial Profiles in Hydrothermally Active Deep Sediment Layers
from Middle Valley (NE Pacific), Sites 857 and 858
B.A. Cragg and R.J. Parkes
doi:10.2973/odp.proc.sr.139.236.1994
Section 8: Rock Magnetic Properties
30. Rock Magnetic Properties of Mafic Rocks from the Middle Valley
Sedimented Rift
K. Fukuma, U. Körner, and H. Oda
doi:10.2973/odp.proc.sr.139.242.1994
31. Rock Magnetic Properties of Hydrothermally Formed Iron Sulfides
from Middle Valley, Juan de Fuca Ridge
U. Körner
doi:10.2973/odp.proc.sr.139.243.1994
Section 9: Thermal Studies
32. Estimating In-Situ Thermal Conductivity from Log Data
H.W. Villinger, M.G. Langseth, H.M. Gröschel-Becker, and A.T. Fisher
doi:10.2973/odp.proc.sr.139.258.1994
33. Estimation of Grain Thermal Conductivity in the Turbidite Sediment
of the Juan de Fuca Ridge
M. Kinoshita
doi:10.2973/odp.proc.sr.139.250.1994
34. Anisotropic Thermal Conductivity of Pleistocene Turbidite
Sediments of the Northern Juan de Fuca Ridge
E.E. Davis and D.A. Seemann
doi:10.2973/odp.proc.sr.139.245.1994
35. Present and Past Temperatures of Sediments at Site 857, Middle
Valley, Northern Juan de Fuca Ridge
E.E. Davis and K. Wang
doi:10.2973/odp.proc.sr.139.254.1994
Section 10: Physical and Hydrogeological Studies
36. Structure of Igneous Basement at Sites 857 and 858 Based on Leg
139 Downhole Logging
M.G. Langseth and K. Becker
doi:10.2973/odp.proc.sr.139.256.1994
37. Correlation of Well Logs, Physical Properties, and Surface Seismic
Reflection Data, Middle Valley, Juan de Fuca Ridge
K.M.M. Rohr and H. Gröschel-Becker
doi:10.2973/odp.proc.sr.139.257.1994
38. Seismic Velocities of Diabase and Basalt from Middle Valley Sills
and Flows, Northern Juan de Fuca Ridge
H.M. Gröschel-Becker, H.W. Villinger, B.A. Konyukhov, G.J. Iturrino,
and N.I. Christensen
doi:10.2973/odp.proc.sr.139.248.1994
39. Permeabilities in the Middle Valley Hydrothermal System Measured
with Packer and Flowmeter Experiments
K. Becker, R.H. Morin, and E.E. Davis
doi:10.2973/odp.proc.sr.139.252.1994
40. Geotechnical and Hydrogeological Properties of Sediments from
Middle Valley, Northern Juan de Fuca Ridge
A.T. Fisher, K. Fischer, D. Lavoie, M. Langseth, and J. Xu
doi:10.2973/odp.proc.sr.139.246.1994
41. Formation Temperatures and Pressures in a Sedimented Rift
Hydrothermal System: 10 Months of CORK Observations, Holes 857D
and 858G
E.E. Davis and K. Becker
doi:10.2973/odp.proc.sr.139.255.1994
42. Hydrologic and Thermal Conditions at a Sediment/Basalt Interface:
Implications for Interpretation of Field Measurements at Middle Valley
J.U. Bessler, L. Smith, and E.E. Davis
doi:10.2973/odp.proc.sr.139.253.1994
Section 11: Syntheses
43. Timing of Ore Deposition and Sill Intrusion at Site 856: Evidence
from Stratigraphy, Alteration, and Sediment Pore-Water Composition
M.J. Mottl, C.G. Wheat, and J. Boulègue
doi:10.2973/odp.proc.sr.139.232.1994
44. On the Nature and Consequences of Hydrothermal Circulation in
the Middle Valley Sedimented Rift: Inferences from Geophysical and
Geochemical Observations, Leg 139
E.E. Davis and A.T. Fisher
doi:10.2973/odp.proc.sr.139.259.1994
Section 12: Data Reports
45. Data Report: Physical Properties of Massive Sulfide from Site 856,
Middle Valley, Northern Juan de Fuca Ridge
H.M. Gröschel-Becker, E.E. Davis, and J.M. Franklin
doi:10.2973/odp.proc.sr.139.249.1994
46. Data Report: Rock Magnetic Properties of Hydrothermally Altered
Sediments from Middle Valley
H. Oda and U. Körner
doi:10.2973/odp.proc.sr.139.244.1994
47. Data Report: Preliminary Gamma-Ray Analyses of Samples from
Leg 139
W.S. Moore and D. Stakes
doi:10.2973/odp.proc.sr.139.223.1994
48. Data Report: Sulfur Content of Sediment and Sulfur Isotope Values
of Sulfide and Sulfate Minerals from Middle Valley
R.A. Zierenberg
doi:10.2973/odp.proc.sr.139.226.1994
49. Data Report: Trace Metal Composition of Pore Water from Sites
855 through 858, Middle Valley, Juan de Fuca Ridge
C.G. Wheat and M.J. Mottl
doi:10.2973/odp.proc.sr.139.269.1994
Section 13: Index
Index
Back-Pocket Foldout
Chapter 44: Figures 3B and 3C. Bathymetry of Middle Valley, northern
Juan de Fuca Ridge.