Results 21 to 30 of about 1,509,261 (248)

Complex examination of the Upper Paleozoic siliciclastic rocks from southern Transdanubia, SW Hungary—Mineralogical, petrographic, and geochemical study [PDF]

open access: yes, 2007
A vertical section of Upper Paleozoic sandstones from southern Transdanubia (Mecsek-Villány area, Tisza mega-unit, Hungary) has been analyzed for major and trace elements, including rare earth elements (REEs).
Nesbitt   +34 more
core   +1 more source

High-resolution carbon isotope changes in the Permian-Triassic boundary interval, Chongqing, South China; implications for control and growth of earliest Triassic microbialites [PDF]

open access: yes, 2009
High-resolution delta13C_CARB analysis of the Permian-Triassic boundary (PTB) interval at the Laolongdong section, Beibei, near the city of Chongqing, south China, encompasses the latest Permian and earliest Triassic major facies changes in the South ...
Kershaw, S   +23 more
core   +1 more source

The Middle and Upper Permian Deposits in Gorski Kotar: Facts and Misconceptions

open access: yesGeologia Croatica, 2010
The frequent occurrence of sandstones and other coarse-grainedsedimentary rocks in Gorski Kotar indicates molasse type sedimentationas a consequence of the intensive erosion of all uplifted terrain ina tectonically active area.
Dunja Aljinović, Jasenka Sremac
doaj   +1 more source

Indication of natural gas migration and accumulation by three-dimensional fluorescence characteristics of gas-field waters: A case study of the Permian-Triassic in the central-western Sichuan Basin

open access: yesPetroleum Exploration and Development, 2012
Permian-Triassic natural gas migration paths and accumulation patterns in the central-west Sichuan region have been studied by way of examining the three-dimensional shape, light intensity excitation and fingerprint characteristics of aromatic ...
Wei LI
doaj   +1 more source

A Record of Rotaloid Foraminifera from the Upper Permian-Lower Triassic Rocks of Kashmir, India [PDF]

open access: yes, 2015
The first record of Rotaloid foraminifera from the Upper Permian-Lower Triassic of Kashmir is significant as it provides an insight to understand organic evolution. The present study explicitly reveals that Rotaloid foraminifers’ first origination was in
Pande, Prabhas Kumar, Sharma, SP
core   +1 more source

A mineralogical-petrographical study of evaporites from Mali Kukor, Vranjkovići and Slane Stine quarry (Upper Permian evaporites from Dalmatia, Croatia)

open access: yesGeologia Croatica, 2018
The evaporite deposits examined in this study are located in the central part of middle Dalmatia, Croatia. In this region, Upper Permian evaporite sediments were deposited under favourable conditions onto the Variscan basement around the northern margins
Željko Dedić   +2 more
doaj   +1 more source

Upper Devonian to Permian

open access: yes, 1997
The Upper Devonian and Carboniferous comprise a southern and a northern succession separated by the Ancestral Aklavik Arch. The southern succession, deposited in the Mackenzie Basin and the Prophet Trough, consists of Frasnian to Gzhelian strata. The northern succession comprises Viséan to Moscovian strata that onlapped the Yukon Fold Belt from the ...
B C Richards, E W Bamber, J Utting
openaire   +1 more source

Upper Permian bryozoans of central East Greenland [PDF]

open access: yesBulletin of the Geological Society of Denmark, 2008
The bryozoan fauna in the Upper Permian Wegener Halvø, Ravnefjeld and Schuchert Dal formations, central East Greenland is of modest diversity, with only 15 genera identified. Bryozoans are most abundant in the Wegener Halvø Formation where they are important in the formation of carbonate buildups.
Sørensen, Anne Mehlin   +2 more
openaire   +1 more source

The earliest Mesopsychidae and revision of the family Mesopanorpodidae (Mecoptera)

open access: yesZooKeys, 2011
The family Mesopanorpodidae is revised. Most taxa referred to this family are not related to the type genus Mesopanorpodes Tillyard, 1918. The type species of the latter, Mesopanorpodes wianamattensis, is closely related to Mesopsyche Tillyard, 1917 ...
Alexey Bashkuev
doaj   +1 more source

Early Triassic microbialites from the Changxing Region of Zhejiang Province, South China

open access: yesJournal of Palaeogeography, 2019
Microbialites, often considered as a signal of extreme marine environment, are common in the Lower Triassic strata of South China where they flourished in the aftermath of the end-Permian mass extinction.
Ya-Fei Huang   +7 more
doaj   +1 more source

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