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NARROW
GeoRef Subject
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all geography including DSDP/ODP Sites and Legs
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Marathon Basin (1)
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North America
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Pedregosa Basin (1)
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Permian Basin (2)
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Rome Trough (1)
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South America
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Argentina (2)
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Precordillera (2)
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United States
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Alabama
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Jefferson County Alabama (1)
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Shelby County Alabama (1)
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Anadarko Basin (1)
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Arkoma Basin (1)
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Delaware Basin (1)
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Illinois Basin (1)
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Mississippi
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Yalobusha County Mississippi (1)
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Mississippi Embayment (1)
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New Mexico
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Eddy County New Mexico (1)
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North Carolina (1)
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Oklahoma
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Bryan County Oklahoma (1)
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Love County Oklahoma (1)
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Marshall County Oklahoma (1)
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Texas
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Cooke County Texas (1)
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Culberson County Texas (1)
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Denton County Texas (1)
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Grayson County Texas (1)
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Hood County Texas (1)
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Loving County Texas (1)
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Parker County Texas (1)
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Tarrant County Texas (1)
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Texas Panhandle (1)
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Travis County Texas (1)
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West Texas (2)
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Winkler County Texas (1)
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commodities
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brines (1)
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elements, isotopes
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isotope ratios (4)
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isotopes
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stable isotopes
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Nd-144/Nd-143 (1)
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Sr-87/Sr-86 (3)
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metals
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alkaline earth metals
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strontium
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Sr-87/Sr-86 (3)
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rare earths
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neodymium
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Nd-144/Nd-143 (1)
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fossils
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Invertebrata
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Mollusca (1)
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geochronology methods
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K/Ar (1)
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Rb/Sr (1)
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Sm/Nd (1)
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U/Pb (1)
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geologic age
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Mesozoic
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Cretaceous
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Comanchean
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Glen Rose Formation (1)
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Washita Group (1)
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Lower Cretaceous
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Aptian (1)
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Glen Rose Formation (1)
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Upper Cretaceous
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Cenomanian (1)
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Paleozoic
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Cambrian
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Conasauga Group (1)
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Lower Cambrian (1)
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Carboniferous
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Pennsylvanian
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Lower Pennsylvanian
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Haymond Formation (1)
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Devonian (1)
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Knox Group (1)
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Permian
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Castile Formation (1)
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Upper Permian (1)
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Silurian (1)
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Precambrian
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Eocambrian (1)
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upper Precambrian
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Proterozoic (1)
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igneous rocks
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igneous rocks
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plutonic rocks
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gabbros (1)
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granites
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A-type granites (1)
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volcanic rocks
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rhyolites (1)
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metamorphic rocks
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metamorphic rocks (4)
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minerals
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carbonates
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calcite (1)
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halides
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chlorides
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halite (1)
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sulfates
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anhydrite (2)
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gypsum (1)
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Primary terms
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absolute age (5)
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brines (1)
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continental drift (1)
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crust (3)
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faults (1)
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geochemistry (3)
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geosynclines (1)
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igneous rocks
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plutonic rocks
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gabbros (1)
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granites
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A-type granites (1)
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volcanic rocks
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rhyolites (1)
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Invertebrata
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Mollusca (1)
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isotopes
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stable isotopes
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Nd-144/Nd-143 (1)
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Sr-87/Sr-86 (3)
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-
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Mesozoic
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Cretaceous
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Comanchean
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Glen Rose Formation (1)
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Washita Group (1)
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Lower Cretaceous
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Aptian (1)
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Glen Rose Formation (1)
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Upper Cretaceous
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Cenomanian (1)
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metals
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alkaline earth metals
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strontium
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Sr-87/Sr-86 (3)
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-
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rare earths
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neodymium
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Nd-144/Nd-143 (1)
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-
-
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metamorphic rocks (4)
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North America
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Pedregosa Basin (1)
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paleogeography (3)
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Paleozoic
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Cambrian
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Conasauga Group (1)
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Lower Cambrian (1)
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Carboniferous
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Pennsylvanian
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Lower Pennsylvanian
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Haymond Formation (1)
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-
-
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Devonian (1)
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Knox Group (1)
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Permian
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Castile Formation (1)
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Upper Permian (1)
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Silurian (1)
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petrology (2)
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plate tectonics (1)
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Precambrian
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Eocambrian (1)
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upper Precambrian
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Proterozoic (1)
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sedimentary rocks
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carbonate rocks
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limestone (1)
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chemically precipitated rocks
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evaporites (2)
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clastic rocks
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novaculite (1)
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South America
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Argentina (2)
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Precordillera (2)
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stratigraphy (1)
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structural geology (2)
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tectonics (2)
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tectonophysics (1)
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United States
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Alabama
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Jefferson County Alabama (1)
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Shelby County Alabama (1)
-
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Anadarko Basin (1)
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Arkoma Basin (1)
-
Delaware Basin (1)
-
Illinois Basin (1)
-
Mississippi
-
Yalobusha County Mississippi (1)
-
-
Mississippi Embayment (1)
-
New Mexico
-
Eddy County New Mexico (1)
-
-
North Carolina (1)
-
Oklahoma
-
Bryan County Oklahoma (1)
-
Love County Oklahoma (1)
-
Marshall County Oklahoma (1)
-
-
Texas
-
Cooke County Texas (1)
-
Culberson County Texas (1)
-
Denton County Texas (1)
-
Grayson County Texas (1)
-
Hood County Texas (1)
-
Loving County Texas (1)
-
Parker County Texas (1)
-
Tarrant County Texas (1)
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Texas Panhandle (1)
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Travis County Texas (1)
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West Texas (2)
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Winkler County Texas (1)
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sedimentary rocks
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flysch (1)
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sedimentary rocks
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carbonate rocks
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limestone (1)
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chemically precipitated rocks
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evaporites (2)
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clastic rocks
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novaculite (1)
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Ages of pre-rift basement and synrift rocks along the conjugate rift and transform margins of the Argentine Precordillera and Laurentia
Strontium isotope stratigraphy of the Comanchean Series in north Texas and southern Oklahoma
Strontium Isotopes, Age, and Tectonic Setting of Cambrian Salinas along the Rift and Transform Margins of the Argentine Precordillera and Southern Laurentia
Parent Brine of the Castile Evaporites (Upper Permian), Texas and New Mexico
Isotopic and elemental chemistry of subsurface Precambrian igneous rocks, west Texas and eastern New Mexico
Transcontinental Proterozoic provinces
Abstract Research on the Precambrian basement of North America over the past two decades has shown that Archean and earliest Proterozoic evolution culminated in suturing of Archean cratonic elements and pre-1.80-Ga Proterozoic terranes to form the Canadian Shield at about 1.80 Ga (Hoffman, 1988,1989a, b). We will refer to this part of Laurentia as the Hudsonian craton (Fig. 1) because it was fused together about 1.80 to 1.85 Ga during the Trans-Hudson and Penokean orogenies (Hoffman, 1988). The Hudsonian craton, including its extensions into the United States (Chapters 2 and 3, this volume), formed the foreland against which 1.8- to 1.6-Ga continental growth occurred, forming the larger Laurentia (Hoffman, 1989a, b). Geologic and geochronologic studies over the past three decades have shown that most of the Precambrian in the United States south of the Hudsonian craton and west of the Grenville province (Chapter 5) consists of a broad northeast to east-northeast-trending zone of orogenic provinces that formed between 1.8 and 1.6 Ga. This zone, including extensions into eastern Canada, comprises or hosts most rock units of this age in North America as well as extensive suites of 1.35- to 1.50-Ga granite and rhyolite. This addition to the Hudsonian Craton is referred to in this chapter as the Transcontinental Proterozoic provinces (Fig. 1); the plural form is used to denote the composite nature of this broad region. The Transcontinental Proterozoic provinces consist of many distinct lithotectonic entities that can be defined on the basis of regional lithology, regional structure, U-Pb ages from zircons, Sr-Nd-Pb isotopic signatures, and regional geophysical anomalies.
Abstract A variety of major basins and uplifts are found on the foreland adjacent to the present limit of the Ouachita foldbelt (Fig. 1). These are both parallel and transverse to the foldbelt. Individual smaller structures within these basins and uplifts are generally parallel to the structural trend of the major features. The parallel structures are a series of basins that appear to have a generally analogous structural history and style and that can, in turn, be related to Ouachita events. The transverse structures do not share a common history and their relationship to Ouachita deformation is unclear.
Southern Midcontinent region
Abstract The Southern Midcontinent is a complex region characterized by great thicknesses of sediments preserved in a series of major depositional and structural basins separated by orogenic uplifts created mainly during Pennsylvanian time (Plate 5-A).Sedimentary rocks of every geologic system from Precambrian through the Quaternary are preserved within the region, and their diverse lithologies include limestones, dolomites, sandstones, shales, conglomerates, red beds, and evaporites. The strata are a mixture of marine and nonmarine deposits, and generally (except for the red bed-evaporite sequences), they are richly fossiliferous and are well suited to biostratigraphic correlation and interpretation of depositional environments. Dominant lithologies in most basins of the region are, in ascending order, as follows: a thin transgressive sandstone of Late Cambrian age that covered the basement-rock complex of intrusives, extrusives, and metasediments; overlain by a thick sequence of Late Cambrian through Late Mississippian (Meramecian) carbonates, with minor amounts of sandstone and shale; followed by a thick sequence of terrigenous clastics, with some carbonates, deposited from Late Mississippian (Chesterian) through Early Permian (Wolfcampian) time; then a thick series of red beds and evaporites were deposited during the remainder of the Permian; overlain, in the west only, by Triassic and Jurassic terrestrial red beds; then Cretaceous marine deposits in the south and west; and finally a mantle of Tertiary alluvial-fan, aeolian, and lacustrine sediments in the west. Owing to the great thickness of strata in most basins of the region, and the many surface and subsurface stratigraphie studies that have been conducted, a plethora of