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NARROW
GeoRef Subject
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all geography including DSDP/ODP Sites and Legs
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Africa
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East Africa
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Ethiopia
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Awash Valley (1)
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North Africa
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Tunisia (1)
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Southern Africa
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Tetrapoda
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Primates
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Brachiopoda
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Cnidaria
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Echinodermata
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Crinozoa
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Mollusca
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Cephalopoda
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Protista
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microfossils (7)
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Plantae
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Spermatophyta
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trails (1)
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geochronology methods
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Tertiary
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Precambrian
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sulfides
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pyrite (2)
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Primary terms
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absolute age (6)
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Africa
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East Africa
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Ethiopia
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Awash Valley (1)
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North Africa
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Tunisia (1)
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Southern Africa
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Gauteng South Africa (1)
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Arctic region
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Asia
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Far East
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Middle East
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New Zealand
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biogeography (8)
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Canada
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carbon
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Cenozoic
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Quaternary
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upper Holocene
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Pleistocene
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Peoria Loess (1)
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Roxana Silt (1)
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upper Pleistocene
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Rancholabrean (1)
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Wisconsinan
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middle Wisconsinan (1)
-
-
-
-
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Tertiary
-
Neogene
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Miocene
-
Calvert Formation (1)
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middle Miocene
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Choptank Formation (1)
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-
Saint Marys Formation (1)
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upper Miocene (1)
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Pliocene
-
Hadar Formation (1)
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-
-
Paleogene
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Eocene
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Clarno Formation (1)
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Uintan (1)
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upper Eocene
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Chadronian (1)
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Oligocene
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lower Oligocene (1)
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upper Oligocene
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bivariate analysis
A new approach for investigating spatial relationships of ichnofossils: a case study of Ediacaran–Cambrian animal traces
A case of Ampferer-type subduction beneath the New Caledonia arc: Evidence for inefficient subduction of hydrated lithologies into the upper mantle
Paleoecology of naticid–molluscan prey interaction during the Late Jurassic (Oxfordian) in Kutch, India: evolutionary implications
Concentration Mechanisms of Rare Earth Element-Nb-Zr-Be Mineralization in the Baerzhe Deposit, Northeast China: Insights from Textural and Chemical Features of Amphibole and Rare Metal Minerals
Discrimination of Seismic Events (2006–2020) in North Korea Using P / Lg Amplitude Ratios from Regional Stations and a Bivariate Discriminant Function
Tracking Proterozoic–Triassic sediment routing to western Laurentia via bivariate non-negative matrix factorization of detrital provenance data
MOLLUSCAN LIVE-DEAD FIDELITY OF A STORM-DOMINATED SHALLOW-MARINE SETTING AND ITS IMPLICATIONS
Laser ablation ICP–MS trace element composition of native gold from the Abitibi greenstone belt, Timmins, Ontario
New insights on the Early Pleistocene equids from Roca-Neyra (France, central Europe): implications for the Hipparion LAD and the Equus FAD in Europe
Abstract This study presents petrological and geochemical data on Neoarchean granitoids from the northern and central parts of the Bundelkhand Craton to discuss its crustal evolution and tectonic history. The study deals with two granitoid suites, i.e. tonalites–trondhjemites–granodiorites (TTG) and sanukitoids. TTGs are characterized by high SiO 2 , Na 2 O and mostly low to moderate Mg#. They display enrichment in light rare earth elements, low to moderately fractionated heavy rare earth elements (HREE) and low Sr/Y ratios, suggesting their high-HREE character or low-pressure origin from melting of a mafic protolith. The sanukitoid samples show relatively low SiO 2 , high K 2 O (2.1–4.6 wt%), Pb, Sr and Ba, and moderate to low Mg#, Cr, Ni. These granitoids probably generated from partial melting of hydrous mafic rocks followed by interaction with a mantle peridotite. Geochemical characteristics, tectonic discrimination using ratios like (Ce/Pb) PM , (La/Nb) PM and (Th/Nb) PM and regional rock association suggest that the Neoarchean TTGs and sanukitoids were emplaced in a subduction setting. Combining the existing knowledge base, a schematic model for generation and evolution of crust from Paleoarchean to Neoarchean has been proposed for the Bundelkhand Craton.