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Invertebrata
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Mollusca
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Cephalopoda
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Gastropoda
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Porifera
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Calcarea
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Stromatoporoidea (2)
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Protista
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Foraminifera
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Vermes (2)
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Conodonta (1)
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Plantae
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geologic age
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Cenozoic
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Quaternary
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-
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Pleistocene
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-
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Sierra Ladrones Formation (1)
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Tertiary
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lower Tertiary (2)
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middle Tertiary (1)
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Neogene
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Miocene
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Guantao Formation (1)
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lower Miocene (5)
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Surma Group (1)
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Temblor Formation (2)
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Messinian (1)
-
-
-
Ogallala Formation (2)
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Pliocene (11)
-
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Paleogene
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Barail Group (1)
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Dongying Formation (1)
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Eocene
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Avon Park Formation (1)
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Flournoy Formation (1)
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Green River Formation (1)
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Lookingglass Formation (1)
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lower Eocene (1)
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middle Eocene
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Tyee Formation (1)
-
-
upper Eocene
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Priabonian (2)
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Uinta Formation (1)
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-
-
Oligocene
-
Brule Formation (1)
-
Fontainebleau Sandstone (3)
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Frio Formation (6)
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lower Oligocene
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Rupelian (1)
-
-
middle Oligocene (1)
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Suwannee Limestone (2)
-
upper Oligocene (3)
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Vicksburg Group (1)
-
-
Paleocene
-
lower Paleocene
-
Danian (4)
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K-T boundary (1)
-
-
-
Wasatch Formation (1)
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White River Group (1)
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Wilcox Group (2)
-
-
Shahejie Formation (4)
-
-
upper Cenozoic
-
Pico Formation (1)
-
-
-
Coal Measures (1)
-
Lake Bonneville (1)
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Mesozoic
-
Cretaceous
-
Blairmore Group (1)
-
Chonta Formation (1)
-
Comanchean
-
Buda Limestone (1)
-
Edwards Formation (1)
-
Georgetown Formation (1)
-
Glen Rose Formation (1)
-
Rodessa Formation (1)
-
Travis Peak Formation (2)
-
-
Dakota Formation (2)
-
Graneros Shale (1)
-
Lower Cretaceous
-
Albian
-
upper Albian (2)
-
-
Aptian (2)
-
Barremian (1)
-
Berriasian (1)
-
Bluesky Formation (1)
-
Cadomin Formation (1)
-
Cupido Formation (1)
-
Edwards Formation (1)
-
Georgetown Formation (1)
-
Glen Rose Formation (1)
-
Hauterivian (1)
-
McMurray Formation (1)
-
Mowry Shale (1)
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Muddy Sandstone (1)
-
Neocomian (1)
-
Rodessa Formation (1)
-
Sligo Formation (1)
-
Spirit River Formation (1)
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Thamama Group (1)
-
Travis Peak Formation (2)
-
Urgonian (1)
-
-
Mancos Shale (2)
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Middle Cretaceous (1)
-
Natih Formation (1)
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Quantou Formation (1)
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Upper Cretaceous
-
Almond Formation (1)
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Buda Limestone (1)
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Campanian (2)
-
Cardium Formation (1)
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Carlile Shale (1)
-
Cenomanian (5)
-
Codell Sandstone Member (1)
-
Ferron Sandstone Member (1)
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Frontier Formation (6)
-
Greenhorn Limestone (1)
-
Gulfian
-
Austin Group (1)
-
Eagle Ford Formation (4)
-
-
Holz Shale (1)
-
Judith River Formation (1)
-
K-T boundary (1)
-
Ladd Formation (1)
-
Lewis Shale (1)
-
Maestrichtian
-
upper Maestrichtian (1)
-
-
Mesaverde Group (3)
-
Moreno Formation (1)
-
Neuquen Group (1)
-
Niobrara Formation (1)
-
Peedee Formation (1)
-
Senonian (2)
-
Turonian
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lower Turonian (1)
-
-
Tuscaloosa Formation (4)
-
Two Medicine Formation (1)
-
Vivian Formation (1)
-
-
-
Glen Canyon Group (1)
-
Jurassic
-
Aztec Sandstone (1)
-
Bazhenov Formation (1)
-
Kingak Shale (1)
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Lower Jurassic
-
lower Liassic (1)
-
Nordegg Member (1)
-
Portland Formation (1)
-
-
Middle Jurassic
-
Bajocian
-
Brent Group (1)
-
Broom Formation (1)
-
Etive Formation (2)
-
Ness Formation (1)
-
Rannoch Formation (2)
-
Tarbert Formation (1)
-
-
Bathonian (3)
-
Callovian (1)
-
Dogger (2)
-
-
Norphlet Formation (2)
-
Upper Jurassic
-
Arab Formation (1)
-
Buckner Formation (1)
-
Cotton Valley Group (3)
-
Fulmar Formation (2)
-
Haynesville Formation (2)
-
Kimmeridge Clay (1)
-
Kimmeridgian (2)
-
Morrison Formation (3)
-
Oxfordian (5)
-
Smackover Formation (8)
-
Tithonian (3)
-
-
-
middle Mesozoic (1)
-
Navajo Sandstone (5)
-
Newark Supergroup (1)
-
Nugget Sandstone (3)
-
Triassic
-
Lower Triassic
-
Permian-Triassic boundary (2)
-
-
Middle Triassic
-
Anisian (2)
-
Doig Formation (2)
-
Ladinian (2)
-
-
Montney Formation (5)
-
Sherwood Sandstone (3)
-
Shublik Formation (1)
-
Takla Group (1)
-
Upper Triassic
-
Carnian (1)
-
Chinle Formation (1)
-
Keuper (1)
-
Mercia Mudstone (2)
-
Shinarump Member (1)
-
Xujiahe Formation (1)
-
Yanchang Formation (2)
-
-
-
Vaca Muerta Formation (1)
-
Yanshanian (1)
-
-
Paleozoic
-
Arbuckle Group (1)
-
Bedford Shale (1)
-
Berea Sandstone (2)
-
Cambrian
-
Lower Cambrian
-
Rome Formation (1)
-
Shady Dolomite (1)
-
Yudoma Series (1)
-
-
Middle Cambrian (3)
-
Upper Cambrian
-
Bonneterre Formation (4)
-
Eau Claire Formation (1)
-
Lamotte Sandstone (1)
-
Mount Simon Sandstone (2)
-
Potsdam Sandstone (1)
-
Wilberns Formation (1)
-
-
-
Carboniferous
-
Benxi Formation (1)
-
Lower Carboniferous
-
Dinantian (12)
-
-
Middle Carboniferous (1)
-
Mississippian
-
Lower Mississippian
-
Fort Payne Formation (1)
-
Kinderhookian
-
Banff Formation (1)
-
-
Lake Valley Formation (6)
-
Osagian
-
Burlington Limestone (2)
-
-
-
Macumber Formation (1)
-
Madison Group (3)
-
Middle Mississippian
-
Visean
-
upper Visean (1)
-
-
-
Mission Canyon Limestone (1)
-
Newman Limestone (1)
-
Upper Mississippian
-
Hartselle Sandstone (1)
-
Meramecian
-
Sainte Genevieve Limestone (1)
-
Salem Limestone (1)
-
-
Serpukhovian (2)
-
-
Windsor Group (3)
-
-
Pennsylvanian
-
Lower Pennsylvanian
-
Bashkirian (2)
-
-
Marble Falls Group (1)
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Middle Pennsylvanian
-
Breathitt Formation (1)
-
Desmoinesian
-
Cherokee Group (1)
-
-
Paradox Formation (1)
-
-
Morrow Formation (1)
-
Upper Pennsylvanian
-
Holder Formation (2)
-
Missourian
-
Kansas City Group (1)
-
-
Virgilian (1)
-
-
-
Upper Carboniferous (9)
-
-
Cow Head Group (1)
-
Devonian
-
Beaverhill Lake Group (1)
-
Keg River Formation (2)
-
Lower Devonian
-
Coeymans Formation (1)
-
Oriskany Sandstone (1)
-
-
Middle Devonian
-
Givetian (4)
-
Hamilton Group (1)
-
Mahantango Formation (1)
-
Marcellus Shale (4)
-
Nahanni Formation (1)
-
Onondaga Limestone (1)
-
Prairie Evaporite (1)
-
Winnipegosis Formation (1)
-
-
Slave Point Formation (2)
-
Swan Hills Formation (3)
-
Upper Devonian
-
Birdbear Formation (1)
-
Brallier Shale (1)
-
Famennian
-
Wabamun Group (3)
-
-
Frasnian
-
Leduc Formation (3)
-
-
Grosmont Formation (1)
-
Jefferson Group (1)
-
Nisku Formation (4)
-
-
-
Exshaw Formation (1)
-
Knox Group (2)
-
middle Paleozoic (1)
-
New Albany Shale (1)
-
Ordovician
-
Lower Ordovician
-
Arenigian (1)
-
Beekmantown Group (2)
-
Ellenburger Group (1)
-
Saint George Group (1)
-
Tremadocian (1)
-
-
Lushs Bight Group (1)
-
Majiagou Formation (1)
-
Middle Ordovician
-
Black River Group (1)
-
Glenwood Shale (1)
-
Llanvirnian (1)
-
Saint Peter Sandstone (6)
-
-
Trenton Group (2)
-
Upper Ordovician
-
Caradocian (1)
-
Fernvale Formation (1)
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Utica Shale (2)
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Permian
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Lower Permian
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Leman Sandstone Formation (1)
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Lyons Sandstone (2)
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Yates Formation (5)
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Sauk Sequence (1)
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Taiyuan Formation (1)
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upper Paleozoic
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Weber Sandstone (1)
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Paleoproterozoic
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Sinian
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igneous rocks
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Primary terms
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Malay Archipelago
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Jurassic
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Upper Jurassic
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middle Mesozoic (1)
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Triassic
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North America
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Ocean Drilling Program
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Leg 144
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Leg 190
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ocean floors (3)
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Oceania
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paleoclimatology (25)
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Paleozoic
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Cambrian
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Rome Formation (1)
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Bonneterre Formation (4)
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Wilberns Formation (1)
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Carboniferous
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Benxi Formation (1)
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Lower Carboniferous
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Middle Carboniferous (1)
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Mississippian
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Lower Mississippian
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Fort Payne Formation (1)
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Kinderhookian
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Lake Valley Formation (6)
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Osagian
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Burlington Limestone (2)
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-
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Macumber Formation (1)
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Madison Group (3)
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Middle Mississippian
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Visean
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upper Visean (1)
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Mission Canyon Limestone (1)
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Newman Limestone (1)
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Upper Mississippian
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Hartselle Sandstone (1)
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Meramecian
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Sainte Genevieve Limestone (1)
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Salem Limestone (1)
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Serpukhovian (2)
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Windsor Group (3)
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Pennsylvanian
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Lower Pennsylvanian
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Bashkirian (2)
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Marble Falls Group (1)
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Middle Pennsylvanian
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Breathitt Formation (1)
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Desmoinesian
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Cherokee Group (1)
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Paradox Formation (1)
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Morrow Formation (1)
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Upper Pennsylvanian
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Holder Formation (2)
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Missourian
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Kansas City Group (1)
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Virgilian (1)
-
-
-
Upper Carboniferous (9)
-
-
Cow Head Group (1)
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Devonian
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Beaverhill Lake Group (1)
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Keg River Formation (2)
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Lower Devonian
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Coeymans Formation (1)
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Oriskany Sandstone (1)
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Middle Devonian
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Givetian (4)
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Hamilton Group (1)
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Mahantango Formation (1)
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Marcellus Shale (4)
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Nahanni Formation (1)
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Onondaga Limestone (1)
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Prairie Evaporite (1)
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Winnipegosis Formation (1)
-
-
Slave Point Formation (2)
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Swan Hills Formation (3)
-
Upper Devonian
-
Birdbear Formation (1)
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Brallier Shale (1)
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Famennian
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Wabamun Group (3)
-
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Frasnian
-
Leduc Formation (3)
-
-
Grosmont Formation (1)
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Jefferson Group (1)
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Nisku Formation (4)
-
-
-
Exshaw Formation (1)
-
Knox Group (2)
-
middle Paleozoic (1)
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New Albany Shale (1)
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Ordovician
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Lower Ordovician
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Arenigian (1)
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Beekmantown Group (2)
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Ellenburger Group (1)
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Saint George Group (1)
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Tremadocian (1)
-
-
Lushs Bight Group (1)
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Majiagou Formation (1)
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Middle Ordovician
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Black River Group (1)
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Glenwood Shale (1)
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Llanvirnian (1)
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Saint Peter Sandstone (6)
-
-
Trenton Group (2)
-
Upper Ordovician
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Caradocian (1)
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Fernvale Formation (1)
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Red River Formation (1)
-
Trentonian (2)
-
-
Utica Shale (2)
-
-
Permian
-
Coconino Sandstone (1)
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Guadalupian
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Bell Canyon Formation (1)
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Capitan Formation (2)
-
Delaware Mountain Group (1)
-
Grayburg Formation (3)
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Queen Formation (1)
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Seven Rivers Formation (1)
-
Tansill Formation (3)
-
-
Lower Permian
-
Abo Formation (1)
-
Cisuralian
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Artinskian (1)
-
-
Leman Sandstone Formation (1)
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Leonardian (3)
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Wolfcampian (3)
-
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Lyons Sandstone (2)
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Maokou Formation (1)
-
Middle Permian (3)
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Rotliegendes (4)
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Unayzah Formation (3)
-
Upper Permian
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Permian-Triassic boundary (2)
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Salado Formation (2)
-
Zechstein (4)
-
-
Yates Formation (5)
-
Yeso Formation (1)
-
-
Sauk Sequence (1)
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Silurian
-
Lockport Formation (1)
-
Lower Silurian
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Grimsby Sandstone (1)
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Wenlock (1)
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Middle Silurian
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Clinton Group (1)
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Keefer Sandstone (1)
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Niagaran (2)
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Upper Silurian
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Ludlow (2)
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Salina Group (1)
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-
-
Taiyuan Formation (1)
-
upper Paleozoic
-
Bakken Formation (1)
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Fountain Formation (1)
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Shanxi Formation (1)
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Tirrawarra Sandstone (1)
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Weber Sandstone (1)
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Woodford Shale (1)
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palynomorphs (1)
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Plantae
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plate tectonics (12)
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Precambrian
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Biwabik Iron Formation (1)
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Uinta Mountain Group (1)
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upper Precambrian
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Proterozoic
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Mesoproterozoic
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Belt Supergroup (1)
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Neoproterozoic
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Cryogenian (2)
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Doushantuo Formation (2)
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Torridonian (1)
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Paleoproterozoic
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Journal Article
Mechanisms of bedding fracturing in the Junggar Basin, northwest China: Constraints from in situ U-Pb dating and C-O-Nd isotopic analysis of calcite cements Available to Purchase
Chen Zhang, Xiangye Kong, Qiqi Wang, Min She, Feng Liang, Yixin Dong, Hao Xu, Jianhua He, Huadong Chen
Journal: GSA Bulletin
Publisher: Geological Society of America
Published: 20 February 2025
GSA Bulletin (2025)
..., fluid inclusion, and C-O-Nd isotope data and in situ U-Pb ages of calcite cement to determine the timing and mechanisms of bed-parallel fracture formation. Our findings revealed two generations of bed-parallel fractures: type A and type B fractures. The crystallization age of calcite cement in type...
Early Publication
Journal Article
Diagenetic evolution of the Bunter Sandstone Formation and its controls on reservoir quality: implications for CO 2 injectivity and storage Open Access
Journal: Geoenergy
Publisher: Geological Society of London
Published: 17 February 2025
Geoenergy (2025) 3 (1): geoenergy2024-023.
... in the northern UKSNS. Diagenetic cements (carbonates, sulfates and halite) are common. Most are early and episodic, patchy at local and regional scales, with periods of replacement and dissolution. Consequential fine-scale heterogeneous compaction textures are unrelated to current or maximum burial depths...
Journal Article
Origin, distribution, and significance of cements in the Miocene Vinchina Formation sandstones, Vinchina Foreland Basin, northwestern Argentina Available to Purchase
Journal: Journal of Sedimentary Research
Publisher: SEPM Society for Sedimentary Geology
Published: 11 February 2025
Journal of Sedimentary Research (2025) 95 (1): 133–155.
... the basin due to paleoenvironmental facies distribution, framework clast composition, and diagenetic processes. Carbonate cements dominate the coarser-grained (fluvial) facies in the northern region. In contrast, gypsum is more conspicuous in the finer-grained (lacustrine and playa lake) facies prevalent...
Journal Article
Petroleum-charge history of Paleozoic carbonates in the Tahe oil field, Tarim Basin, northwestern China: Insights from oil geochemistry, fluid inclusion, and U-Pb dating Available to Purchase
Hao Xu, Xiaowen Guo, Zicheng Cao, Tiago M. Alves, Ze Tao, Bing Wang, Jiaxu Chen, Gaokun Zuo, Xuyou Zhang, Tao Luo
Journal: AAPG Bulletin
Publisher: American Association of Petroleum Geologists
Published: 01 January 2025
AAPG Bulletin (2025) 109 (1): 57–84.
... are investigated in this work based on oil geochemistry, fluid inclusion analyses, and in situ U-Pb dating of calcite cements. Four charge episodes are identified based on the following: (1) the similar origin but different maturation histories of sampled crude oils; (2) the four distinct fluorescence-color...
Journal Article
Detailed Investigation of Dolomites in the Middle Jurassic Samana Suk Formation, Kahi Section, Nizampur Basin, North-Western Himalayas (Pakistan) Available to Purchase
Journal: Russian Geology and Geophysics
Publisher: Novosibirsk State University
Published: 01 December 2024
Russ. Geol. Geophys. (2024) 65 (12): 1485–1502.
...- and fracture-filling cementing saddle dolomite and cementing calcites are recognized in the field. Petrographic studies show the complex diagenetic history of the Samana Suk Formation from near-surface diagenesis, including micritization, neomorphism, and several varieties of dolomites. These varieties...
Journal Article
Analcime-wairakite formation during experimental cement-bentonite alteration at 200-300 °C Available to Purchase
Amber Zandanel, Kirsten B. Sauer, Marlena J. Rock, Florie A. Caporuscio, Carlos F. Jové-Colón, Edward N. Matteo
Journal: American Mineralogist
Publisher: Mineralogical Society of America
Published: 22 November 2024
American Mineralogist (2024)
... operational timescales. Hydrothermal interactions between engineered materials (e.g., bentonite buffers, cements, waste canister materials) and the host rock environment may drive alteration processes that affect the advantageous properties of some barrier materials. However, such alteration will also promote...
Early Publication
Journal Article
Igneous intrusion drives in-reservoir oil thermal cracking: A case from the Subei Basin, eastern China Available to Purchase
Journal: AAPG Bulletin
Publisher: American Association of Petroleum Geologists
Published: 01 November 2024
AAPG Bulletin (2024) 108 (11): 2045–2072.
... cementation and concurrently with fracturing. The older oil inclusions record the initial oils that served as precursors to the pyrobitumen, while the younger generation was likely formed during oil cracking. Fissure calcites containing primary oil inclusions yield a laser ablation-multicollector-inductively...
Journal Article
Hydrocarbon-charge history of hydrothermally altered reservoirs: The Tailai gas field, eastern Sichuan Basin, China Available to Purchase
Yanxian Zhu, Zhiliang He, Xiaowen Guo, Tiago M. Alves, Xuesong Lu, Sheng He, Jian Gao, Ze Tao, Huili Li, Shuangjian Li
Journal: AAPG Bulletin
Publisher: American Association of Petroleum Geologists
Published: 01 November 2024
AAPG Bulletin (2024) 108 (11): 2159–2188.
... cements. All of these data are integrated by tying the geochemical results to the evolution of the nearby No. 15 fault system and burial/thermal models for key wells. The interpreted seismic data indicate that the No. 15 fault system provided major migration pathways for hydrocarbons. The hydrocarbon...
Journal Article
Improvement of Fluidity and Long-term Strength of Cemented Paste Backfill with Low Calcium Fly-ash Available to Purchase
Publisher: Geological Society of India
Published: 01 September 2024
Jour. Geol. Soc. India (2024) 100 (9): 1338–1346.
...Mingqing Huang; Qiwei Zheng; Qingling Liu; Zhong Gao ABSTRACT Waste rocks and tailings are widely applied materials in underground metal mines to backfill mined-out areas. To test the effect of low calcium fly ash on slurry fluidity and long-term strength of cemented paste backfill, orthogonal...
Journal Article
Rock compositional control on geomechanical properties of the Montney Formation, Western Canadian Basin Available to Purchase
Publisher: Canadian Society of Petroleum Geologists
Published: 01 September 2024
Bulletin of Canadian Energy Geoscience (2024) 71 (2): 143–170.
... was found between the geomechanical properties and sedimentary facies in the Montney Formation, in contrast to the behavior of many shale formations, which we attribute to the size and compositional homogeneity of the detrital material comprising the siltstone, and to pervasive cementation at shallow burial...
Journal Article
Impact of CO 2 influx on sandstone reservoir quality: A case study of the Quantou Formation, southern Songliao Basin, China Available to Purchase
Journal: AAPG Bulletin
Publisher: American Association of Petroleum Geologists
Published: 01 June 2024
AAPG Bulletin (2024) 108 (6): 1149–1185.
... contents of carbonate and quartz cements, specific clay mineral types (mixed-layer I/S with Reichweite order of R = 3 and illite), and poor reservoir quality and oil productivity due to the influx of deep inorganic CO 2 dating to circa 65–44 Ma. Petrographic analyses reveal that the K 1 q 4...
Journal Article
Fluid evolution in deeply buried and karstified carbonate reservoirs of the central Tarim Basin, northwestern China Available to Purchase
Jiaqing Liu, Zhong Li, Malcolm W. Wallace, Ashleigh V. S. Hood, Liu Yang, Chaojin Lu, Sam J. Purkis, Peter K. Swart
Journal: AAPG Bulletin
Publisher: American Association of Petroleum Geologists
Published: 01 July 2023
AAPG Bulletin (2023) 107 (7): 1137–1167.
... (>5500 m [>18,045 ft]) and has endured a complex diagenetic history. To understand the mechanisms of reservoir formation, we conduct a broad portfolio of geochemical analyses on the calcite cements that fill the pores and fractures in samples retrieved from wells penetrating the Yingshan Formation...
Journal Article
Petrography, Diagenesis and Hydrocarbon Source Potential of the Barail and Disang Group of Rocks in Parts of the Naga Schuppen Belt and Inner Fold Belt of Assam-Arakan Basin Available to Purchase
Publisher: Geological Society of India
Published: 01 July 2023
Jour. Geol. Soc. India (2023) 99 (7): 906–916.
... are very hard and compact, fine-grained, sublihic arenite, and lithic greywacke types and show medium porosity (avg. 11.3%). The reservoir properties of the sandstones of both groups are controlled by various diagenetic alterations like mechanical compaction, cementation, overgrowth, authigenesis of clay...
Journal Article
Petrological and Geochemical Characterization of Miocene Tipam Sandstone in Parts of Cachar Fold Belt, Northeast India Available to Purchase
Publisher: Geological Society of India
Published: 01 July 2023
Jour. Geol. Soc. India (2023) 99 (7): 917–928.
... of Tipam Sandstone Sample no. Quartz Feldspar Rock Fragments Cement Mica Matrix H.M Q Mu Q Mnu Q P P Ca/Na F K Ig Met Sed C Sil C Fer C Cal Mus Bio M1 11.33 29.67 4.67 7.00 5.33 4.67 7.66 5.67 1.67 8.33 0.00 0.67 4.33 8.00 1.00 M1S 14.67 34.33...
Journal Article
Petro-geochemical Signatures as Evidences for Tectonic Setting, Palaeoweathering and Provenance of Eocene Kopili Sandstones, Meghalaya, Northeast India Available to Purchase
Publisher: Geological Society of India
Published: 01 July 2023
Jour. Geol. Soc. India (2023) 99 (7): 929–940.
... and resembles the primary matrix (proto-matrix), recrystallized primary matrix (ortho-matrix) and diagenetically produced epi-matrix of Dickinson (1970) . Among cements, silica ( Fig. 5c ) and iron oxide ( Fig. 5c and 6a ) are the two interstitial pore-filling materials found in Kopili sandstones...
Journal Article
Stress sensitivity of elastic moduli in high-porosity cemented sandstone — Heuristic models and experimental data Available to Purchase
Journal: Geophysics
Publisher: Society of Exploration Geophysicists
Published: 12 June 2023
Geophysics (2023) 88 (4): MR185–MR194.
...Jiaxin Yu; Kenneth Duffaut; Per Avseth ABSTRACT Quantitative description of the reservoir rock stress sensitivity is critical for seismic modeling and interpretation. Laboratory studies have indicated that the wave velocity of high porosity cemented sandstone is asymmetrically much more sensitive...
Journal Article
Classification of elemental chemofacies as indicators of cement diagenesis in mudrocks of the Permian Spraberry Formation and Wolfcamp formation, western Texas Available to Purchase
Journal: AAPG Bulletin
Publisher: American Association of Petroleum Geologists
Published: 01 June 2023
AAPG Bulletin (2023) 107 (6): 863–886.
... a combination of thin-section petrography, scanning electron microscopy, and mineral segmentation mapping to document rock texture, especially the amount and distribution of quartz and calcite cements. We find that samples dominated by extrabasinal grain components show isolated clusters of intergranular...
Journal Article
Diagenetic alterations in Eocene, deeply buried volcaniclastic sandstones with implications for reservoir quality in the Huizhou depression, Pearl River Mouth Basin, China Available to Purchase
Journal: AAPG Bulletin
Publisher: American Association of Petroleum Geologists
Published: 01 June 2023
AAPG Bulletin (2023) 107 (6): 929–955.
... chlorite and heulandite cements. First-generation laumontite cement (60°C–70°C) formed via heulandite transformation during eogenesis. Variable mesogenetic alteration products developed in an organic-CO 2 –based system and mainly included (1) precipitation of pore-filling chlorite, quartz, kaolinite...
Journal Article
Secondary porosity generation in sandstones constrained by the fault movement, fluid flow, and mudstone–sandstone interactions, offshore Bohai Bay Basin, China Available to Purchase
Journal: AAPG Bulletin
Publisher: American Association of Petroleum Geologists
Published: 01 May 2023
AAPG Bulletin (2023) 107 (5): 785–821.
... for the precipitation of carbonate cements in adjacent sandstones. Moderate and deep mudstones are mature and able to provide organic acids/CO 2 and other ions to adjacent sandstones. However, shallow mudstones are not mature and have limited mass supply capacity. Subsequent fault movement activates fluid migration...
Journal Article
Geology and evolution of fissure systems in fractured basement rocks, Calabria, southern Italy: implications for sub-unconformity reservoirs and aquifers Open Access
Journal: Journal of the Geological Society
Publisher: Geological Society of London
Published: 05 April 2023
Journal of the Geological Society (2023) 180 (3): jgs2022-085.
... to highlight the porosity, which was estimated by eye using transmitted light optical microscopy. This also allowed the microstructure and relative age relationships of fracturing, mineralization and cementation to be determined. Collectively, the basal conglomerates and microbreccias vary significantly...
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GeoRef Thesaurus
cement
Scope Notes: Term restricted to use as the natural material. For the commodity and engineering material, see cement materials. Use cementation for the process.
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