- Abstract
- Affiliation
- All
- Authors
- Book Series
- DOI
- EISBN
- EISSN
- Full Text
- GeoRef ID
- ISBN
- ISSN
- Issue
- Keyword (GeoRef Descriptor)
- Meeting Information
- Report #
- Title
- Volume
- Abstract
- Affiliation
- All
- Authors
- Book Series
- DOI
- EISBN
- EISSN
- Full Text
- GeoRef ID
- ISBN
- ISSN
- Issue
- Keyword (GeoRef Descriptor)
- Meeting Information
- Report #
- Title
- Volume
- Abstract
- Affiliation
- All
- Authors
- Book Series
- DOI
- EISBN
- EISSN
- Full Text
- GeoRef ID
- ISBN
- ISSN
- Issue
- Keyword (GeoRef Descriptor)
- Meeting Information
- Report #
- Title
- Volume
- Abstract
- Affiliation
- All
- Authors
- Book Series
- DOI
- EISBN
- EISSN
- Full Text
- GeoRef ID
- ISBN
- ISSN
- Issue
- Keyword (GeoRef Descriptor)
- Meeting Information
- Report #
- Title
- Volume
- Abstract
- Affiliation
- All
- Authors
- Book Series
- DOI
- EISBN
- EISSN
- Full Text
- GeoRef ID
- ISBN
- ISSN
- Issue
- Keyword (GeoRef Descriptor)
- Meeting Information
- Report #
- Title
- Volume
- Abstract
- Affiliation
- All
- Authors
- Book Series
- DOI
- EISBN
- EISSN
- Full Text
- GeoRef ID
- ISBN
- ISSN
- Issue
- Keyword (GeoRef Descriptor)
- Meeting Information
- Report #
- Title
- Volume
NARROW
GeoRef Subject
-
all geography including DSDP/ODP Sites and Legs
-
Arctic region
-
Greenland
-
Jameson Land (1)
-
-
-
Asia
-
Far East
-
China (1)
-
-
Himalayas (1)
-
Indian Peninsula
-
India (1)
-
-
-
Atlantic Ocean
-
North Atlantic
-
Gulf of Mexico
-
De Soto Canyon (1)
-
-
-
-
Canada
-
Western Canada
-
Canadian Cordillera (1)
-
Selwyn Basin (1)
-
Yukon Territory (1)
-
-
-
Colorado River (1)
-
Europe
-
Central Europe
-
Czech Republic
-
Bohemia
-
Prague Basin (1)
-
-
-
Germany (1)
-
-
-
Front Range (1)
-
Gulf of Mexico Basin (1)
-
Indian Ocean
-
Bay of Bengal (1)
-
Bengal Fan (2)
-
-
Marathon Basin (3)
-
North America
-
Appalachians
-
Blue Ridge Province (1)
-
Northern Appalachians (1)
-
Southern Appalachians (2)
-
-
Great Plains (1)
-
Gulf Coastal Plain (9)
-
North American Cordillera
-
Canadian Cordillera (1)
-
-
North American Craton (1)
-
Rocky Mountains (1)
-
Western Interior
-
Western Interior Seaway (1)
-
-
-
North Slope (1)
-
South America
-
Argentina (1)
-
Colombia (1)
-
Precordillera (1)
-
Venezuela (2)
-
-
United States
-
Alabama (7)
-
Alaska (1)
-
Anadarko Basin (4)
-
Ardmore Basin (4)
-
Arkansas
-
Clark County Arkansas (2)
-
Garland County Arkansas (4)
-
Hot Spring County Arkansas (1)
-
Montgomery County Arkansas (4)
-
Ouachita County Arkansas (1)
-
Perry County Arkansas (2)
-
Polk County Arkansas (3)
-
Pulaski County Arkansas (2)
-
Saline County Arkansas (2)
-
Scott County Arkansas (2)
-
Yell County Arkansas (2)
-
-
Arkoma Basin (13)
-
Benton Uplift (6)
-
Black Warrior Basin (4)
-
California
-
San Joaquin Valley (1)
-
-
Colorado (1)
-
Eastern U.S.
-
Southeastern U.S. (2)
-
-
Florida (1)
-
Illinois (1)
-
Illinois Basin (1)
-
Kansas
-
Sedgwick Basin (1)
-
-
Kentucky (2)
-
Louisiana (3)
-
Midcontinent (4)
-
Mississippi (2)
-
Mississippi Embayment (2)
-
Mississippi Valley (2)
-
Missouri (4)
-
Nemaha Ridge (1)
-
Nevada (2)
-
New Madrid region (1)
-
Oklahoma
-
Arbuckle Mountains (1)
-
Atoka County Oklahoma (2)
-
Latimer County Oklahoma (1)
-
Le Flore County Oklahoma (2)
-
McCurtain County Oklahoma (2)
-
Pittsburg County Oklahoma (4)
-
Pushmataha County Oklahoma (2)
-
Wichita Mountains (1)
-
-
Ouachita Belt (2)
-
Ouachita Mountains (125)
-
Ozark Mountains (1)
-
Reelfoot Rift (1)
-
Southern U.S. (4)
-
Southwestern U.S. (1)
-
Tennessee (3)
-
Texas
-
Dalhart Basin (1)
-
Fort Worth Basin (1)
-
Jack County Texas (1)
-
Marathon Geosyncline (2)
-
Midland Basin (1)
-
Nolan County Texas (1)
-
Palo Pinto County Texas (1)
-
Parker County Texas (2)
-
Sutton County Texas (1)
-
Tarrant County Texas (1)
-
Val Verde Basin (1)
-
West Texas (2)
-
Wise County Texas (1)
-
-
Utah (1)
-
-
Western Hemisphere (1)
-
-
commodities
-
barite deposits (2)
-
bitumens (2)
-
energy sources (7)
-
metal ores
-
lead-zinc deposits (4)
-
-
mineral deposits, genesis (4)
-
mineral exploration (1)
-
oil and gas fields (2)
-
petroleum
-
natural gas (7)
-
-
-
elements, isotopes
-
chemical ratios (1)
-
isotope ratios (3)
-
isotopes
-
stable isotopes
-
Nd-144/Nd-143 (1)
-
O-18/O-16 (2)
-
S-34/S-32 (1)
-
Sr-87/Sr-86 (1)
-
-
-
metals
-
alkali metals
-
potassium (1)
-
rubidium (1)
-
-
alkaline earth metals
-
barium (1)
-
strontium
-
Sr-87/Sr-86 (1)
-
-
-
hafnium (1)
-
rare earths
-
neodymium
-
Nd-144/Nd-143 (1)
-
-
-
-
oxygen
-
O-18/O-16 (2)
-
-
sulfur
-
S-34/S-32 (1)
-
-
-
fossils
-
Graptolithina (1)
-
ichnofossils (1)
-
Invertebrata
-
Arthropoda
-
Trilobitomorpha
-
Trilobita
-
Ptychopariida (1)
-
-
-
-
Brachiopoda
-
Articulata
-
Spiriferida (1)
-
-
-
Mollusca
-
Cephalopoda
-
Ammonoidea (1)
-
-
-
Porifera (1)
-
Protista
-
Foraminifera
-
Fusulinina
-
Fusulinidae (1)
-
-
-
-
-
microfossils
-
Conodonta (1)
-
Fusulinina
-
Fusulinidae (1)
-
-
-
problematic fossils (1)
-
trails (1)
-
-
geochronology methods
-
fission-track dating (1)
-
K/Ar (1)
-
paleomagnetism (1)
-
U/Pb (4)
-
-
geologic age
-
Cenozoic (1)
-
Mesozoic
-
Cretaceous
-
Dakota Formation (1)
-
Upper Cretaceous
-
Cenomanian (1)
-
Gulfian
-
Woodbine Formation (1)
-
-
Tuscaloosa Formation (1)
-
-
-
Jurassic
-
Middle Jurassic (1)
-
-
Triassic
-
Upper Triassic (1)
-
-
-
Paleozoic
-
Arbuckle Group (1)
-
Cambrian
-
Lower Cambrian (1)
-
Upper Cambrian
-
Wilberns Formation (1)
-
-
-
Carboniferous
-
Jackfork Group (13)
-
Johns Valley Formation (3)
-
Middle Carboniferous (2)
-
Mississippian
-
Stanley Group (18)
-
Upper Mississippian
-
Hartselle Sandstone (2)
-
Parkwood Formation (3)
-
Pennington Formation (1)
-
Pride Mountain Formation (1)
-
-
-
Pennsylvanian
-
Lower Pennsylvanian
-
Haymond Formation (1)
-
Morrowan (2)
-
-
Marble Falls Group (1)
-
Middle Pennsylvanian
-
Atokan
-
Atoka Formation (13)
-
-
Desmoinesian
-
Cherokee Group (1)
-
Hartshorne Sandstone (1)
-
Spiro Sandstone (1)
-
-
-
Morrow Formation (1)
-
Pottsville Group (1)
-
Strawn Series (2)
-
Upper Pennsylvanian (1)
-
Wapanucka Limestone (3)
-
-
Tesnus Formation (1)
-
-
Collier Shale (2)
-
Devonian
-
Lower Devonian
-
Helderbergian (1)
-
-
-
Hunton Group (1)
-
lower Paleozoic (1)
-
Ordovician
-
Lower Ordovician (1)
-
Middle Ordovician
-
Simpson Group (1)
-
-
Upper Ordovician (2)
-
Womble Shale (1)
-
-
Permian
-
Upper Permian (1)
-
-
Silurian
-
Upper Silurian (1)
-
-
upper Paleozoic
-
Arkansas Novaculite (3)
-
-
Woodford Shale (2)
-
-
Phanerozoic (1)
-
Precambrian
-
Eocambrian (2)
-
upper Precambrian
-
Proterozoic
-
Neoproterozoic (1)
-
-
-
-
-
igneous rocks
-
igneous rocks
-
volcanic rocks
-
basalts (1)
-
pyroclastics
-
tuff (6)
-
-
-
-
volcanic ash (1)
-
-
metamorphic rocks
-
metamorphic rocks
-
metasedimentary rocks (2)
-
schists
-
greenschist (1)
-
-
-
turbidite (9)
-
-
minerals
-
carbonates
-
aragonite (1)
-
calcite (2)
-
dolomite (1)
-
magnesite (1)
-
norsethite (1)
-
-
minerals (1)
-
oxides
-
chromite (1)
-
hematite (1)
-
magnetite (1)
-
manganese oxides (1)
-
-
phosphates
-
apatite (1)
-
monazite (1)
-
-
silicates
-
framework silicates
-
feldspar group
-
alkali feldspar
-
adularia (2)
-
K-feldspar (2)
-
-
-
silica minerals
-
quartz (6)
-
-
-
orthosilicates
-
nesosilicates
-
zircon group
-
zircon (3)
-
-
-
-
sheet silicates
-
chlorite group
-
chlorite (3)
-
-
clay minerals
-
dickite (1)
-
kaolinite (2)
-
smectite (2)
-
-
illite (8)
-
mica group
-
biotite (1)
-
-
pyrophyllite (1)
-
rectorite (1)
-
-
-
-
Primary terms
-
absolute age (5)
-
Arctic region
-
Greenland
-
Jameson Land (1)
-
-
-
Asia
-
Far East
-
China (1)
-
-
Himalayas (1)
-
Indian Peninsula
-
India (1)
-
-
-
Atlantic Ocean
-
North Atlantic
-
Gulf of Mexico
-
De Soto Canyon (1)
-
-
-
-
barite deposits (2)
-
biogeography (2)
-
bitumens (2)
-
Canada
-
Western Canada
-
Canadian Cordillera (1)
-
Selwyn Basin (1)
-
Yukon Territory (1)
-
-
-
Cenozoic (1)
-
clay mineralogy (5)
-
continental drift (2)
-
continental shelf (1)
-
crust (9)
-
crystal growth (1)
-
crystallography (1)
-
data processing (2)
-
deformation (6)
-
diagenesis (9)
-
Earth (1)
-
earthquakes (1)
-
economic geology (17)
-
energy sources (7)
-
epeirogeny (1)
-
Europe
-
Central Europe
-
Czech Republic
-
Bohemia
-
Prague Basin (1)
-
-
-
Germany (1)
-
-
-
faults (25)
-
folds (13)
-
foliation (1)
-
fractures (2)
-
geochemistry (11)
-
geochronology (1)
-
geomorphology (1)
-
geophysical methods (10)
-
geosynclines (3)
-
Graptolithina (1)
-
ichnofossils (1)
-
igneous rocks
-
volcanic rocks
-
basalts (1)
-
pyroclastics
-
tuff (6)
-
-
-
-
inclusions
-
fluid inclusions (3)
-
-
Indian Ocean
-
Bay of Bengal (1)
-
Bengal Fan (2)
-
-
intrusions (3)
-
Invertebrata
-
Arthropoda
-
Trilobitomorpha
-
Trilobita
-
Ptychopariida (1)
-
-
-
-
Brachiopoda
-
Articulata
-
Spiriferida (1)
-
-
-
Mollusca
-
Cephalopoda
-
Ammonoidea (1)
-
-
-
Porifera (1)
-
Protista
-
Foraminifera
-
Fusulinina
-
Fusulinidae (1)
-
-
-
-
-
isotopes
-
stable isotopes
-
Nd-144/Nd-143 (1)
-
O-18/O-16 (2)
-
S-34/S-32 (1)
-
Sr-87/Sr-86 (1)
-
-
-
maps (7)
-
Mesozoic
-
Cretaceous
-
Dakota Formation (1)
-
Upper Cretaceous
-
Cenomanian (1)
-
Gulfian
-
Woodbine Formation (1)
-
-
Tuscaloosa Formation (1)
-
-
-
Jurassic
-
Middle Jurassic (1)
-
-
Triassic
-
Upper Triassic (1)
-
-
-
metal ores
-
lead-zinc deposits (4)
-
-
metals
-
alkali metals
-
potassium (1)
-
rubidium (1)
-
-
alkaline earth metals
-
barium (1)
-
strontium
-
Sr-87/Sr-86 (1)
-
-
-
hafnium (1)
-
rare earths
-
neodymium
-
Nd-144/Nd-143 (1)
-
-
-
-
metamorphic rocks
-
metasedimentary rocks (2)
-
schists
-
greenschist (1)
-
-
-
metamorphism (6)
-
metasomatism (5)
-
mineral deposits, genesis (4)
-
mineral exploration (1)
-
mineralogy (1)
-
minerals (1)
-
Mohorovicic discontinuity (1)
-
North America
-
Appalachians
-
Blue Ridge Province (1)
-
Northern Appalachians (1)
-
Southern Appalachians (2)
-
-
Great Plains (1)
-
Gulf Coastal Plain (9)
-
North American Cordillera
-
Canadian Cordillera (1)
-
-
North American Craton (1)
-
Rocky Mountains (1)
-
Western Interior
-
Western Interior Seaway (1)
-
-
-
oil and gas fields (2)
-
orogeny (15)
-
oxygen
-
O-18/O-16 (2)
-
-
paleoecology (3)
-
paleogeography (9)
-
paleomagnetism (1)
-
paleontology (6)
-
Paleozoic
-
Arbuckle Group (1)
-
Cambrian
-
Lower Cambrian (1)
-
Upper Cambrian
-
Wilberns Formation (1)
-
-
-
Carboniferous
-
Jackfork Group (13)
-
Johns Valley Formation (3)
-
Middle Carboniferous (2)
-
Mississippian
-
Stanley Group (18)
-
Upper Mississippian
-
Hartselle Sandstone (2)
-
Parkwood Formation (3)
-
Pennington Formation (1)
-
Pride Mountain Formation (1)
-
-
-
Pennsylvanian
-
Lower Pennsylvanian
-
Haymond Formation (1)
-
Morrowan (2)
-
-
Marble Falls Group (1)
-
Middle Pennsylvanian
-
Atokan
-
Atoka Formation (13)
-
-
Desmoinesian
-
Cherokee Group (1)
-
Hartshorne Sandstone (1)
-
Spiro Sandstone (1)
-
-
-
Morrow Formation (1)
-
Pottsville Group (1)
-
Strawn Series (2)
-
Upper Pennsylvanian (1)
-
Wapanucka Limestone (3)
-
-
Tesnus Formation (1)
-
-
Collier Shale (2)
-
Devonian
-
Lower Devonian
-
Helderbergian (1)
-
-
-
Hunton Group (1)
-
lower Paleozoic (1)
-
Ordovician
-
Lower Ordovician (1)
-
Middle Ordovician
-
Simpson Group (1)
-
-
Upper Ordovician (2)
-
Womble Shale (1)
-
-
Permian
-
Upper Permian (1)
-
-
Silurian
-
Upper Silurian (1)
-
-
upper Paleozoic
-
Arkansas Novaculite (3)
-
-
Woodford Shale (2)
-
-
paragenesis (2)
-
petroleum
-
natural gas (7)
-
-
petrology (4)
-
Phanerozoic (1)
-
plate tectonics (21)
-
Precambrian
-
Eocambrian (2)
-
upper Precambrian
-
Proterozoic
-
Neoproterozoic (1)
-
-
-
-
problematic fossils (1)
-
sea-level changes (2)
-
sedimentary petrology (25)
-
sedimentary rocks
-
carbonate rocks
-
limestone (1)
-
-
chemically precipitated rocks
-
chert (4)
-
-
clastic rocks
-
conglomerate (1)
-
graywacke (1)
-
mudstone (4)
-
novaculite (4)
-
sandstone (25)
-
shale (14)
-
-
coal (1)
-
-
sedimentary structures
-
bedding plane irregularities
-
ripple marks (3)
-
-
current markings (1)
-
graded bedding (1)
-
planar bedding structures
-
bedding (2)
-
cross-bedding (1)
-
cross-laminations (1)
-
cyclothems (1)
-
imbrication (1)
-
laminations (3)
-
sand bodies (1)
-
varves (1)
-
-
soft sediment deformation (1)
-
turbidity current structures
-
Bouma sequence (1)
-
-
-
sedimentation (25)
-
sediments
-
clastic sediments
-
clay (1)
-
-
-
South America
-
Argentina (1)
-
Colombia (1)
-
Precordillera (1)
-
Venezuela (2)
-
-
stratigraphy (23)
-
structural analysis (3)
-
structural geology (24)
-
sulfur
-
S-34/S-32 (1)
-
-
symposia (1)
-
tectonics (25)
-
tectonophysics (11)
-
United States
-
Alabama (7)
-
Alaska (1)
-
Anadarko Basin (4)
-
Ardmore Basin (4)
-
Arkansas
-
Clark County Arkansas (2)
-
Garland County Arkansas (4)
-
Hot Spring County Arkansas (1)
-
Montgomery County Arkansas (4)
-
Ouachita County Arkansas (1)
-
Perry County Arkansas (2)
-
Polk County Arkansas (3)
-
Pulaski County Arkansas (2)
-
Saline County Arkansas (2)
-
Scott County Arkansas (2)
-
Yell County Arkansas (2)
-
-
Arkoma Basin (13)
-
Benton Uplift (6)
-
Black Warrior Basin (4)
-
California
-
San Joaquin Valley (1)
-
-
Colorado (1)
-
Eastern U.S.
-
Southeastern U.S. (2)
-
-
Florida (1)
-
Illinois (1)
-
Illinois Basin (1)
-
Kansas
-
Sedgwick Basin (1)
-
-
Kentucky (2)
-
Louisiana (3)
-
Midcontinent (4)
-
Mississippi (2)
-
Mississippi Embayment (2)
-
Mississippi Valley (2)
-
Missouri (4)
-
Nemaha Ridge (1)
-
Nevada (2)
-
New Madrid region (1)
-
Oklahoma
-
Arbuckle Mountains (1)
-
Atoka County Oklahoma (2)
-
Latimer County Oklahoma (1)
-
Le Flore County Oklahoma (2)
-
McCurtain County Oklahoma (2)
-
Pittsburg County Oklahoma (4)
-
Pushmataha County Oklahoma (2)
-
Wichita Mountains (1)
-
-
Ouachita Belt (2)
-
Ouachita Mountains (125)
-
Ozark Mountains (1)
-
Reelfoot Rift (1)
-
Southern U.S. (4)
-
Southwestern U.S. (1)
-
Tennessee (3)
-
Texas
-
Dalhart Basin (1)
-
Fort Worth Basin (1)
-
Jack County Texas (1)
-
Marathon Geosyncline (2)
-
Midland Basin (1)
-
Nolan County Texas (1)
-
Palo Pinto County Texas (1)
-
Parker County Texas (2)
-
Sutton County Texas (1)
-
Tarrant County Texas (1)
-
Val Verde Basin (1)
-
West Texas (2)
-
Wise County Texas (1)
-
-
Utah (1)
-
-
volcanology (1)
-
weathering (1)
-
well-logging (1)
-
Western Hemisphere (1)
-
-
rock formations
-
Eagle Mills Formation (1)
-
-
sedimentary rocks
-
flysch (19)
-
sedimentary rocks
-
carbonate rocks
-
limestone (1)
-
-
chemically precipitated rocks
-
chert (4)
-
-
clastic rocks
-
conglomerate (1)
-
graywacke (1)
-
mudstone (4)
-
novaculite (4)
-
sandstone (25)
-
shale (14)
-
-
coal (1)
-
-
siliciclastics (3)
-
turbidite (9)
-
volcaniclastics (1)
-
-
sedimentary structures
-
channels (1)
-
sedimentary structures
-
bedding plane irregularities
-
ripple marks (3)
-
-
current markings (1)
-
graded bedding (1)
-
planar bedding structures
-
bedding (2)
-
cross-bedding (1)
-
cross-laminations (1)
-
cyclothems (1)
-
imbrication (1)
-
laminations (3)
-
sand bodies (1)
-
varves (1)
-
-
soft sediment deformation (1)
-
turbidity current structures
-
Bouma sequence (1)
-
-
-
trails (1)
-
-
sediments
-
sediments
-
clastic sediments
-
clay (1)
-
-
-
siliciclastics (3)
-
turbidite (9)
-
volcaniclastics (1)
-
Ouachita Mountains
Mississippian southern Laurentia tuffs came from a northern Gondwana arc
Tectonic–sedimentary interplay of a confined deepwater system in a foreland basin setting: the Pennsylvanian lower Atoka Formation, Ouachita Mountains, U.S.A.
Diagenetic to incipient metamorphic zones of the Benton Uplift, Ouachita Orogen, Arkansas, USA
Palaeomagnetic dating of hydrothermal alteration in the Woodford Shale, Oklahoma, USA
Resolving Presalt Sediment Source Terrains and Dispersal Pathways for the Northern Gulf of Mexico Basin
Abstract As part of a larger intercollegiate effort to reconstruct late Triassic, presalt sediment provenance and routing environments for the Gulf of Mexico sedimentary basin, an integrated geochronologic approach leveraging more traditional biostratigraphic, sedimentologic, and sequence stratigraphic provenance constraints from geologic cores, cuttings, and geophysical well logs was initiated. This paper presents the initial results of this ongoing study and details detrital zircon U-Pb extraction methodologies while Inductively Coupled Plasma Mass Spectrometry analyses are pending. Eagle Mills Formation sandstone samples were collected from well core and cuttings, at five sub-crop locations extending from Texas to South Carolina to the West Florida shelf, in preparation for U-Pb detrital zircon provenance analysis. Prior to separation of detrital zircon grains, a sedimentologic-stratigraphic analysis was conducted including detailed core description, well log evaluation, and thin-section petrography assessment. These findings confirm a hypothesis that late Triassic Eagle Mills siliciclastics were derived from the erosion of an active horst-graben rift block topography with associated igneous intrusives. Specifically, preliminary results reveal pervasive very finegrained mottled gray to red bed sandstone lithology confirming synrift continental alluvium having little or no marine component, and probable deposition in a warm, humid environment but with increasing aridity. Classic fluvial facies features are highlighted including depositional cross strata typifying dynamic braided to meandering channel belts and alluvial floodplain deposits. Less common siltstone and shale lithologies were likely deposited amidst lower energy subfacies including potential shallow lakes, marshes, and/or ephemeral ponds. Bioturbated trace fossils were only rarely preserved, and there was no evidence of marine or eolian facies incursion. Igneous magmatism was prevalent in most subsurface Eagle Mills Formation samples including intrusive diabase, basalt flows, and volcanic ash.
Abstract U-Pb dating of detrital zircons in fluvial sandstones provides a method for reconstruction of drainage basin and sediment routing systems for ancient sedimentary basins. This paper summarizes a detrital-zircon record of Cenomanian paleodrainage and sediment routing for the Gulf of Mexico and U.S. midcontinent. Detrital zircon data from Cenomanian fluvial deposits of the Gulf of Mexico coastal plain (Tuscaloosa and Woodbine formations), the Central Plains (Dakota Group), and the Colorado Front Range (Dakota Formation) show the Appalachian-Ouachita orogen represented a continental divide between south-draining rivers that delivered sediment to the Gulf of Mexico, and west- and north-draining rivers that delivered sediment to the eastern margins of the Western Interior seaway. Moreover, Cenomanian fluvial deposits of the present-day Colorado Front Range were derived from the Western Cordillera, flowed generally west to east, and discharged to the western margin of the seaway. Western Cordillera-derived fluvial systems are distinctive because of the presence of Mesozoic-age zircons from the Cordilleran magmatic arc: the lack of arc zircons in Cenomanian fluvial deposits that dis-charged to the Gulf of Mexico indicates no connection to the Western Cordillera. Detrital zircon data facilitate reconstruction of contributing drainage area and sediment routing. From these data, the dominant system for the Cenomanian Gulf of Mexico was an ancestral Tennessee River (Tuscaloosa Formation), which flowed axially through the Appalachians, had an estimated channel length of 1200-1600 km, and discharged sediment to the east-central Gulf of Mexico. Smaller rivers drained the Ouachita Mountains of Arkansas and Oklahoma (Woodbine Formation), had length scales of <300 km, and entered the Gulf through the East Texas Basin. From empirical scaling relationships between drainage-basin length and the length of basin-floor fans, these results predict significant basin-floor fans related to the paleo-Tennessee River system and very small fans from the east Texas fluvial systems. This predictive model is consistent with mapped deep-water systems, as the largest fan system was derived from rivers that entered the Gulf of Mexico through the southern Mississippi embayment.
Potassium Distribution and Metasomatism In Pelites and Schists: How and When, Relation To Postdepositional Events
Timing and Rates of Flysch Sedimentation In the Stanley Group, Ouachita Mountains, Oklahoma and Arkansas, U.S.A.: Constraints from U-Pb Zircon Ages of Subaqueous Ash-Flow Tuffs
The Iapetan rifted margin of southern Laurentia
Inversion and interpretation of a 3D seismic data set from the Ouachita Mountains, Oklahoma
ABSTRACT: Adventures Through Deep Time: The Central Mississippi River Valley and Its Earthquakes
The Mississippi River Valley contains many interesting geologic stories, perhaps none more mysterious and potentially dangerous than that of the New Madrid seismic zone earthquakes. Here, deep within the North American plate, the central Mississippi River Valley was lit up by at least three major earthquakes during the winter of 1811–1812. Perhaps we could ignore this if it had been a single sequence, but the paleoseismic record tells us that there have also been four prehistoric earthquake sequences within the past 2,600 yr. In this book we travel through time to see how the central Mississippi Valley region developed. Since the earthquakes are occurring on deep basement faults, it is only fitting to start in deep Precambrian time and work our way forward in our quest to better understand the geologic framework of this intra-plate seismic zone. Are more earthquakes coming? It is my hope that this book will stimulate readers to pursue this and many other geologic problems in the Mississippi River Valley.