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all geography including DSDP/ODP Sites and Legs
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Africa
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Atlantic Ocean
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Primary terms
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Africa
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Atlantic Ocean
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Imo Shale (1)
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Clayton Formation (2)
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lower Paleocene
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Porters Creek Formation (2)
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climate change (2)
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Deep Sea Drilling Project
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IPOD
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Leg 77
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DSDP Site 540 (1)
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Leg 10
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Mesozoic
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Upper Cretaceous
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K-T boundary (2)
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upper Maestrichtian (1)
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Senonian (1)
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metamorphic rocks (1)
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North America
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Western Interior (1)
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Ocean Drilling Program
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Leg 159
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ODP Site 959 (1)
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paleoclimatology (2)
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palynomorphs
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petroleum (1)
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clastic rocks
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South America
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Colombia
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Magdalena Valley (2)
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tectonics
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United States
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Book Cliffs (1)
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Colorado (1)
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Mississippi Embayment (1)
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Missouri
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Gasconade County Missouri (1)
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Jefferson County Missouri (1)
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New Madrid County Missouri (1)
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Phelps County Missouri (1)
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Scott County Missouri (1)
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Stoddard County Missouri (2)
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New Mexico (1)
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Oklahoma
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Pawnee County Oklahoma (1)
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Utah
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Emery County Utah (1)
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Grand County Utah (1)
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sedimentary rocks
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laminite (1)
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sedimentary rocks
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carbonate rocks
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dolostone (1)
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grainstone (1)
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limestone
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coquina (1)
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wackestone (1)
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clastic rocks
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sandstone (3)
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shale (1)
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sedimentary structures
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laminite (1)
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sedimentary structures
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biogenic structures
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stromatolites (1)
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secondary structures
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concretions (1)
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sediments
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sediments (3)
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GeoRef Categories
Era and Period
Epoch and Age
Book Series
Date
Availability
Palynomorphs in southern Western Australian lake sediments: evidence of climate change and hypersalinity during the Cenozoic Available to Purchase
UAS-Derived Surficial Deformation around the Epicenter of the 2016 M w 5.8 Pawnee, Oklahoma, USA, Earthquake Available to Purchase
Preliminary observations on the preservation of organic-walled algae in shallow, freshwater lakes from south–central Missouri, USA Available to Purchase
Palynological evidence for sustained deep-marine conditions during the Eocene–Miocene in the southern Gulf of Mexico distal continental margin Available to Purchase
A portrait of Late Maastrichtian and Paleocene palynoflora and paleoenvironment in the northern Mississippi Embayment, southeastern Missouri Available to Purchase
Palynology of the Eocene Esmeraldas Formation, Middle Magdalena Valley Basin, Colombia Available to Purchase
Sedimentology of Acid Saline Lakes in Southern Western Australia: Newly Described Processes and Products of an Extreme Environment Available to Purchase
NEW SPECIES OF DINOFLAGELLATE CYSTS FROM THE PALEOCENE OF THE ANAMBRA BASIN, SOUTHEAST NIGERIA Available to Purchase
Megatsunami deposit in Cretaceous-Paleogene boundary interval of southeastern Missouri Available to Purchase
Crowleys Ridge in southeastern Missouri preserves Cretaceous to Eocene marginal marine sediments deposited in the northwestern portion of the Mississippi Embayment. Sandwiched between the Paleocene Porters Creek Formation and the uppermost Cretaceous Owl Creek Formation is the Paleocene Clayton Formation. Four trenches were excavated and a complete section of Clayton Formation was sampled at a large strip mine in Stoddard County, Missouri. The Clayton at this location consists of 185 cm of graded deposit, the lower part of which includes large Owl Creek rip-up clasts containing layers of microtektites, invertebrate fossils, and abundant terrestrial and marine palynomorphs. Driller's logs and electric logs covering ∼9000 km 2 were reviewed. Well data confirm the consistent thickness and lithology of the Clayton Formation in this part of the Mississippi Embayment. Based on sedimentological and palynological data from this study, the Clayton Formation in the northwestern Mississippi Embayment appears to be a megatsunami deposit resulting from post-impact effects (early Paleocene) associated with the Chicxulub impact event.
Base-Level Buffers and Buttresses: A Model for Upstream Versus Downstream Control on Fluvial Geometry and Architecture Within Sequences Available to Purchase
Sequence Stratigraphy and Depositional Facies of Lower Ordovician Cyclic Carbonate Rocks, Southern Missouri, U.S.A. Available to Purchase
PALEOGENE PALYNOSTRATIGRAPHY OF THE EASTERN MIDDLE MAGDALENA VALLEY, COLOMBIA Available to Purchase
Bounding-Surface Hierarchies and Related Sources of Heterogeneity in Seemingly Uniform Fluvial Sandstone Sheets Available to Purchase
Abstract Fluvial sandstone sheets may appear uniform initially, but detailed examination tends to reveal sharp lithologic contrasts across bounding surfaces. The mid-Cretaceous Muddy Sandstone of southeast Colorado, USA contains two sandstone sheets and provides examples of such potential permeability barriers. Sediment bodies bound and respective bounding surfaces are, in order of ascending rank: bar and dune deposits (1 st - to 3 rd -order), nested channel fills (4 th -order), channel fills (5 th -order), channel belts (6 th -order), nested valley-fills (7 th -order), valley-fills (8 th -order), and sequences (9 th -order). Bar and dune through channel-belt deposits commonly have permeability barriers because the episodes of waning flow common to their deposition tend to cause draping of surfaces and filling of scours locally with finer grained deposits. Channel-fills through sequences tend to have permeability barriers related to juxtaposition of permeable and non-permeable lithofacies during successive incision-and-fill events. Fluvial sandstone sheets can have reduced permeability in paleodip orientation that operates on the scale of individual wells because of draping of down-dip-oriented bar- and dune-accretion surfaces. A dip-oriented grain, reducing permeability in the strike direction, may arise on the scale of fields, because of permeability barriers formed at nested channel through higher-order valley and sequence boundaries.