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NARROW
GeoRef Subject
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all geography including DSDP/ODP Sites and Legs
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Arctic region
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Paleogene
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Hanna Formation (1)
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Paleocene
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K-T boundary (1)
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Tyonek Formation (1)
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Mesozoic
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Cretaceous
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Lower Cretaceous
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Cadomin Formation (1)
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Gething Formation (1)
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Lakota Formation (1)
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Moosebar Formation (2)
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Mancos Shale (1)
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Upper Cretaceous
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Almond Formation (2)
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Colville Group (1)
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Fruitland Formation (1)
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Horseshoe Canyon Formation (2)
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Lance Formation (1)
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Primary terms
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Japan
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Damodar Valley (1)
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Northeastern India
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Assam India (1)
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Talchir coal field (1)
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Middle East
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Turkey (1)
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Southeast Asia (1)
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Sri Lanka (1)
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Atlantic Ocean
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Australasia
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Canada
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Ontario
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Nunavut
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Western Canada
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carbon
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C-13/C-12 (9)
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organic carbon (2)
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Cenozoic
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Quaternary (1)
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Tertiary
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lower Tertiary (2)
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Neogene
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Miocene
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lower Miocene (1)
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upper Miocene
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Mount Messenger Formation (1)
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Pliocene (1)
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Paleogene
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Eocene
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lower Eocene
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Wind River Formation (1)
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Hanna Formation (1)
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Kapuni Group (3)
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Kenai Group (1)
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Paleocene
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lower Paleocene
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K-T boundary (1)
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Tyonek Formation (1)
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maps (2)
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Mesozoic
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Cretaceous
-
Lower Cretaceous
-
Cadomin Formation (1)
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Gething Formation (1)
-
Lakota Formation (1)
-
Moosebar Formation (2)
-
-
Mancos Shale (1)
-
Nanushuk Group (1)
-
Upper Cretaceous
-
Almond Formation (2)
-
Colville Group (1)
-
Ferron Sandstone Member (1)
-
Fruitland Formation (1)
-
Horseshoe Canyon Formation (2)
-
K-T boundary (1)
-
Lance Formation (1)
-
Mesaverde Group (3)
-
Pakawau Group (2)
-
Pictured Cliffs Sandstone (1)
-
Rock Springs Formation (1)
-
Williams Fork Formation (1)
-
-
-
Franciscan Complex (1)
-
Jurassic
-
Lower Jurassic (2)
-
Middle Jurassic
-
Xishanyao Formation (1)
-
-
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Triassic (1)
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Yanshanian (2)
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metals
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sodium (1)
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alkaline earth metals
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calcium (1)
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arsenic (1)
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metamorphic rocks
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North America
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Great Plains (2)
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Rocky Mountains
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Western Interior
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oil and gas fields (2)
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paleoclimatology (4)
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paleogeography (6)
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Paleozoic
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Carboniferous
-
Benxi Formation (2)
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Lower Carboniferous
-
Dinantian (1)
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Mississippian (2)
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Namurian (1)
-
Pennsylvanian
-
Kittanning Formation (1)
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Middle Pennsylvanian
-
Desmoinesian (1)
-
-
Upper Pennsylvanian
-
Sturgis Formation (1)
-
-
-
Upper Carboniferous
-
Westphalian (4)
-
-
-
Ordovician
-
Middle Ordovician (1)
-
-
Permian (4)
-
Taiyuan Formation (2)
-
upper Paleozoic
-
Shanxi Formation (2)
-
-
-
palynomorphs
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acritarchs (1)
-
Dinoflagellata (1)
-
miospores
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pollen (1)
-
-
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paragenesis (1)
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petroleum
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natural gas
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coalbed methane (25)
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-
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petrology (3)
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Plantae (1)
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spectroscopy (1)
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rank
The analysis of the micro-occurrence state of irreducible water in anthracite fracture network based on digital core
Pore structure characterization of middle- and high-ranked coal reservoirs in northern China
Source Rock Characterization for Hydrocarbon Generative Potential and Thermal Maturity of Sutunga Coals, (East Jaintia Hill) Meghalaya, India: Petrographic and Geochemical Approach
3D diffraction imaging method using low-rank matrix decomposition
Sequence stratigraphy and coal accumulation of Lower Cretaceous coal-bearing series in Erlian Basin, northeastern China
Fractal characteristics of the anisotropic microstructure and pore distribution of low-rank coal
Coal rank data and tectonic structure of Mesozoic and Paleogene sediments in North Greenland
ABSTRACT Vitrinite reflectance (R r ) data, combined with structural field evidence, allow insights into the thermal and tectonic history of North Greenland. During the tectonism at the Cretaceous–Paleocene boundary, the thermal imprint varies considerably, mostly controlled by active fault zones. The Upper Cretaceous sequences along the Harder Fjord Fault Zone show R r values between ~3.2% (Frigg Fjord area) and ~2.1% (Depotbugt area). Along the Trolle Land Fault Zone, R r varies between 1.3% and 2.9% in the Herlufsholm Strand area, and between 1.6% and 2.2% in the Kilen area. These maturity variations along regional fault zones are connected with varying deformation intensity and explained by unequal conductive heat flow. In the Kap Washington Group, the high coal rank attaining 5.4% R r is associated with ductile deformation, and is additionally influenced by magmatic activity, i.e., convective heat flow. The coalification is low in regions a greater distance away from active faults, e.g., in Lower Cretaceous sediments of Herluf Trolle Land with ~0.5% R r . The Paleogene Thyra Ø Formation was deposited following deformation and thermal imprint at the Cretaceous–Paleogene boundary. It remained undeformed and shows a reduced R r of ~0.55%, reflecting burial thermal imprint. A later thermal event (known from the literature) that affected Mesozoic sediments, and possibly also locally Paleogene sediments close to the continental margin, is assumed to be related to heat flow from the active plate boundary between northeast Greenland and Svalbard. Based on detailed geochemical and mineralogical studies, thin, yellowish jarosite-bearing, clayey horizons within the Thyra Ø Formation are interpreted to probably originate from volcanic ashes erupted during the first stage of the opening of the North Atlantic.