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all geography including DSDP/ODP Sites and Legs
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Africa
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hydrogen
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stable isotopes
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Pb-207/Pb-204 (1)
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metals
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alkaline earth metals
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Be-10 (2)
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strontium
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Sr-87/Sr-86 (3)
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arsenic (1)
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copper (1)
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lead
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Pb-206/Pb-204 (1)
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Pb-208/Pb-204 (1)
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molybdenum (1)
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rare earths (2)
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oxygen
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O-18/O-16 (8)
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sulfur
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S-34/S-32 (1)
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fossils
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Graptolithina
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Invertebrata
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Cnidaria
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Scyphozoa (1)
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Mollusca
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Cephalopoda
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Gastropoda (1)
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Protista
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Foraminifera (3)
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microfossils
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Conodonta (8)
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palynomorphs
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Dinoflagellata (2)
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Plantae
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algae
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nannofossils (2)
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Pterobranchia (1)
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geochronology methods
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Ar/Ar (10)
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geologic age
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Cenozoic
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Quaternary
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Pleistocene
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upper Pleistocene
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Lake Iroquois (1)
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Wisconsinan (1)
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upper Quaternary (3)
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Tertiary
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Neogene
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Miocene
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Columbia River Basalt Group (1)
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upper Miocene (2)
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Pliocene (1)
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Paleogene
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Eocene (2)
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Oligocene (3)
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upper Cenozoic (2)
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Laurentide ice sheet (3)
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Mesozoic
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Cretaceous
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Logan Canyon Formation (2)
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Lower Cretaceous
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Aptian (1)
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Missisauga Formation (2)
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Neocomian (1)
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Upper Cretaceous
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Dawson Canyon Formation (1)
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Turonian (1)
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Great Valley Sequence (2)
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Jurassic
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Aztec Sandstone (1)
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Mic Mac Formation (1)
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Middle Jurassic
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Callovian (1)
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Upper Jurassic
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Smackover Formation (1)
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Kayenta Formation (1)
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Triassic
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Moenkopi Formation (1)
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Upper Triassic
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Chinle Formation (1)
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MIS 2 (1)
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Paleozoic
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Arbuckle Group (1)
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Cambrian
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Tapeats Sandstone (1)
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Upper Cambrian
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Nopah Formation (1)
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Potsdam Sandstone (4)
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Carboniferous
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Amsden Formation (1)
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Mississippian
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Lower Mississippian
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Kinderhookian
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Banff Formation (1)
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Lodgepole Formation (2)
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Pocono Formation (1)
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Madison Group (1)
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Mission Canyon Limestone (1)
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Redwall Limestone (1)
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Pennsylvanian
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Conemaugh Group (1)
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Allegheny Group (1)
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Monongahela Group (1)
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Devonian
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Marcellus Shale (2)
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Onondaga Limestone (1)
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Upper Devonian
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Huron Member (1)
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Dunkard Group (1)
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lower Paleozoic (1)
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Ordovician
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Lower Ordovician
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Tremadocian (2)
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Middle Ordovician
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Normanskill Formation (1)
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Trenton Group (8)
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Upper Ordovician
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Utica Shale (4)
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Permian
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Toroweap Formation (1)
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Shoo Fly Complex (1)
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Tensleep Sandstone (1)
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Tippecanoe Sequence (2)
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upper Paleozoic
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Precambrian
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upper Precambrian
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Proterozoic
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ophiolite (1)
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framework silicates
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K-feldspar (2)
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quartz (1)
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orthosilicates
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zircon group
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zircon (2)
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sheet silicates
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clay minerals
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kaolinite (1)
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mica group
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sulfates
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gypsum (2)
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sulfides
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sphalerite (1)
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vanadates
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carnotite (1)
-
-
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Primary terms
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absolute age (15)
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Africa
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Sahara (1)
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Southern Africa
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South Africa (1)
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-
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Arctic region
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Greenland
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East Greenland (1)
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Northern Greenland (1)
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-
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Asia
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Far East
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China
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Inner Mongolia China
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Erlian Basin (1)
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Xinjiang China
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Tarim Basin (1)
-
-
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Taiwan (2)
-
-
Middle East
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Turkey
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Kocaeli Turkey
-
Izmit Turkey (1)
-
-
-
-
-
Atlantic Ocean
-
North Atlantic
-
Baltimore Canyon (1)
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Baltimore Canyon Trough (1)
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Georges Bank (2)
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Georges Bank basin (1)
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Northwest Atlantic (3)
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Sable Island Bank (1)
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Scotian Shelf (6)
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Scotian Slope (1)
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Atlantic region (1)
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Australasia
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Australia (3)
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bibliography (5)
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biography (4)
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brines (1)
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Canada
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Newfoundland and Labrador
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Ontario
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Kamouraska County Quebec (1)
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-
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Nunavut
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Queen Elizabeth Islands
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Ellesmere Island (1)
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Western Canada
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Alberta (2)
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British Columbia
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carbon
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C-13/C-12 (6)
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C-14 (2)
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catalogs (1)
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Cenozoic
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lower Cenozoic (1)
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Quaternary
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Holocene
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upper Holocene (1)
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Pleistocene
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Champlain Sea (1)
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Lake Agassiz (1)
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upper Pleistocene
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Wisconsinan (1)
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-
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upper Quaternary (3)
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Tertiary
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Neogene
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Miocene
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Columbia River Basalt Group (1)
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upper Miocene (2)
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Pliocene (1)
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Paleogene
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GeoRef Categories
Era and Period
Epoch and Age
Book Series
Date
Availability
Mohawk Valley Fault
(a) Generalized location map showing the Walker Lane–eastern California she... Available to Purchase
Map of northern and western‐central Walker Lane region showing relocations ... Available to Purchase
(A) Map of the northern Walker Lane deformation belt, northwest Basin and R... Open Access
Colored shaded-relief map of portions of the northern and central Walker La... Open Access
Simplified fault map of the Walker Lane belt and northern part of the easte... Available to Purchase
Map of the Walker Lane deformation belt showing the locations of the northe... Open Access
Regional hillshade and fault map of study area. Northwest‐trending right‐la... Available to Purchase
(A) Simplified tectonic map of the western U.S. Cordillera showing the mode... Open Access
Figure 3. A: Walker Lane in relation to Sierra Nevada and western Great Bas... Available to Purchase
(a) Regional map showing location of the Polaris fault and selected regiona... Available to Purchase
Hillshade and active fault map of the southern Cascadia arc, backarc, north... Open Access
Geology map of the Mohawk Valley region, New York State, that displays the ... Open Access
(A) Simplified tectonic map of the western U.S. Cordillera showing the mode... Open Access
Proposed landscape reconstructions of the area that is now the northern Sie... Open Access
(A) Tectonic sketch map of the Sierra Nevada microplate and Walker Lane bel... Open Access
Map of the central and northern Walker Lane showing major fault zones and g... Available to Purchase
A 740,000-yr-long Mohawk Lake record, Mohawk Valley, northeastern California, USA Available to Purchase
ABSTRACT Mohawk Valley lies in northeastern California on the margin of the northernmost Sierra Nevada and was occupied by Mohawk Lake during much of the middle and late Pleistocene. Throughout that time, the Sierra Nevada ice cap repeatedly extended northward into Mohawk Lake, and ice-contact deltaic sediments were deposited along the valley margins and in the valley bottom. Nearly 200 m of lacustrine and deltaic sediments are now well exposed along streams draining the Sierra Nevada. Tephra beds deposited within the deltaic sediments allow correlation of stratigraphic sections around the valley margin and, together with geomorphic evidence of former lake levels, permit interpretation of a Mohawk Lake history as far back as 740 ka. Mohawk Valley changed from a through-flowing fluvial setting to an intermittent closed basin sometime before 740 ka. After this change occurred, relatively small lakes intermittently formed in Mohawk Valley until ca. 600 ka, when the lake dramatically deepened. Mohawk Lake fluctuated in size over the next ~400,000 yr and increased in size to its highest levels after ca. 200 ka, possibly due to drainage integration with the upstream Lake Beckwourth. After this time, Mohawk Lake spilled over its westward sill, incrementally eroding and lowering lake levels until Mohawk Lake was emptied by ca. 7 ka.