Sand Bodies
Lowstand Deltas
http://gulf.rice.edu/sandbodies/sandbodieslstdeltas.html
Major deltas of the world (yellow dots
http://www.nmnh.si.edu/paleo/deltas/modern_deltas.htm
General framework of Holocene deltas:
Yangtze delta in China- Tidally dominated delta
http://www.nmnh.si.edu/paleo/deltas/modern_deltas.htm
Ganges Brahmaputra- a Tidally dominated delta
http://www.nmnh.si.edu/paleo/deltas/modern_deltas.htm
Nile Delta- Egypt
A Wave dominated delta
http://www.nmnh.si.edu/paleo/deltas/modern_deltas.htm
Rio Grande Highstand 1
Wave dominated delta
The prograding reflection configuration,
the elongate lens geometry, and the steep
seaward margin of the unit support its
interpretation as a wave-dominated delta.
The elongate geometry and steep margin
are interpreted as being formed due to
wave erosion with re-deposition of
sediment redistributed along strike by
waves.
http://gulf.rice.edu/STexas/HST1sand.html
Mississippi Delta- Fluvially dominated
http://tapestry.usgs.gov/features/47delta.html
http://water.usgs.gov/pubs/circ/circ1133/images/fig4.jpeg
Western Louisiana
http://gulf.rice.edu/WLouisiana/wld.map.html
Rio Grande
Lowstand 1
Fluvial dominated delta
http://gulf.rice.edu/STexas/LST1sand.html
http://maps.unomaha.edu/Maher/geo101/tablea.html
After 5 hours of flow
After one day
http://maps.unomaha.edu/Maher/geo101/tableb.html
http://maps.unomaha.edu/Maher/geo101/tableb.html
http://maps.unomaha.edu/Maher/geo101/tableb.html
http://maps.unomaha.edu/Maher/geo101/tableb.html
Environments of deposition in a deltaic sequence (from Horne and others, 1978).
Upper Delta Plain Environment (from Horne and others, 1978).
Typical Section from Upper Delta plain (from Horne and others, 1978).
Development of a delta sequence
(from Frazier and Osanik, 1969).
Back Barrier typical section (from Horne and others, 1978).
Back Barrier Island depositional environments (from Horne and others, 1978).
Distributary Environment (from Horne and others, 1978).
Lower Delta Plain Environment (from Horne and others, 1978).
Typical Sections from the lower delta plain, bottom section
with crevass splay (from Horne and others, 1978)..
Typical Sequence from lower delta plain (from Horne and others, 1978).
An example of facies relationships in
deltaic sequences from the Virgin and
Wolfcamp rocks of Stephens County,
Texas (From Brown, 1969). Note the
lateral variations in facies due to the
shifting positions of the delta lobes.
Pennsylvanian and Permian rocks in
southwestern Pennsylvania exhibit
similar lateral relationships, although
the paucity of outcrops usually
precludes such definition.
Model for the deposition of adjacent channel systems. New channels form
in the interdstributary areas due to subsidence by compaction and
dewatering. From Ferm and Cavaroc (1968).
Model for the deposition of adjacent channel systems.
Note offsetting channels through time. From Ferm and Cavaroc (1968).
Here are the facies relationships in the Upper Pennsylvanian Uniontown
Formation and the Permian Waynesburg Formation in southern Pennsylvanian
and Northern West Virginia. Note the similarities to the Pennsylvanian of Texas
(above). This is from an untitled late 1970's guidebook by A. C. Donaldson (West
Virginia University, retired).
http://gulf.rice.edu/tst.html
http://gulf.rice.edu/tst.html
http://gulf.rice.edu/lst.html
Go to:
http://strata.geol.sc.edu/terminology.html
http://www.ngdc.noaa.gov/mgg/sepm/palaios/0106/savrda.html
Clinoforms and System Tracts
http://gulf.rice.edu/
Clinoforms and System Tracts
http://gulf.rice.edu/
Clinoforms and System Tracts
http://gulf.rice.edu/