Results 31 to 40 of about 39,068 (353)

Geochemical Composition Variations and Tectonic Implications of the Baoligaomiao Formation Volcanic Rocks from the Uliastai Continental Margin, Southeast Central Asian Orogenic Belt [PDF]

open access: yesLithosphere, 2023
The Permo-Carboniferous tectonic evolution in the Uliastai continental margin (UCM), north of the southeast central Asian Orogenic Belt, remains controversial. This work examined the geochemical composition of the felsic volcanic rocks from the lower and
Jianzhou Tang, Zhicheng Zhang, Zejia Ji
doaj   +1 more source

Sedimentary geology of the Middle Carboniferous of the Donbas region (Dniepr-Donets basin, Ukraine) [PDF]

open access: yes, 2015
Peer reviewedPublisher ...
Abels, Hemmo A.   +8 more
core   +2 more sources

New Stratigraphic Rank for the Carboniferous, Mississippian, and Pennsylvanian in Kansas [PDF]

open access: yes, 2009
A new classification for the Carboniferous System/Period is formally adopted by the Kansas Geological Survey (KGS), and Zeller (1968) is modified accordingly.
Franseen, Evan K.   +4 more
core   +3 more sources

Analysis of the Importance of Extension in Accounting for the Post-Carboniferous Subsidence of the North Sea Basin [PDF]

open access: yes, 1986
Post Carboniferous sedimentary deposition in the Central North Sea basins can be separated into three major periods: Permian, Triassic and mid-Jurassic through present.
Hellinger, Steven J.   +2 more
core   +1 more source

The Brécy depocenter as part of a new northern Massif Central Carboniferous–Permian Basin (France)

open access: yesComptes Rendus. Géoscience, 2023
The reinterpretation of deep wells and the reprocessing and interpretation of 115 km of industrial seismic lines can be used to update the geometry, depositional environments and tectonic evolution of the Carboniferous–Permian Brécy depocenter (southwest
Beccaletto, Laurent, Bourquin, Sylvie
doaj   +1 more source

New parasitic organisms in a productid brachiopod Eomarginifera lobata from the lower Carboniferous of the Moscow Basin, Russia [PDF]

open access: yesActa Palaeontologica Polonica
Bioclaustrations are among the best ways that parasitic associations are preserved. A new bioclaustration, Haplorygma productidophilia csp. nov., is here described from the ventral interior of the Carboniferous productid brachiopod Eomarginifera lobata ...
Olev Vinn   +2 more
doaj   +1 more source

An effective palynological preparation procedure using hydrogen peroxide [PDF]

open access: yes, 2007
Most pre-Quaternary palynology samples are currently prepared by demineralization of the sediment/sedimentary rock matrix using hydrochloric and hydrofluoric acids (HCl and HF respectively).
Kyffin-Hughes, Jane E.   +2 more
core   +2 more sources

Reassessment of mid-Carboniferous glacial extent in southwestern Gondwana (Rio Blanco Basin, Argentina) inferred from paleo-mass transport of diamictites [PDF]

open access: yes, 2013
Late Paleozoic glacial diamictites occur in many localities in western Argentina, indicating that the region was strongly affected by glaciation during the mid-Carboniferous (late Serpukhovian–early Bashkirian).
Gulbranson, Erik L.   +6 more
core   +1 more source

Internal framework and geochemistry of the Carboniferous Huaco granite pluton, Sierra de Velasco, NW Argentina [PDF]

open access: yes, 2018
The A-type Huaco granite pluton of the Velasco range (Sierras Pampeanas of northwest Argentina) is formed by three coeval granitic facies and contains subordinate coeval-to-late facies, as well as enclaves, dikes and stocks that show different temporal ...
Grosse, Pablo   +3 more
core   +2 more sources

Carboniferous algaflora in the Urals and its stratigrafical meaning

open access: yesЛитосфера, 2016
In the Urals Carboniferous 11 algae zones allowing to make interregional and intercontinental correlation of coeval deposits are established by author. For more fractional dividing of carbonate profiles on algoflora for the first time akmezones have been
R. M. Ivanova
doaj   +2 more sources

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