Results 21 to 30 of about 40,471 (242)

New Permo-Carboniferous geochemical data from central Thailand: implication for a volcanic arc model [PDF]

open access: yes, 1991
Current ideas and models of geotectonic reconstructions of Southeast Asia are reviewed and new data on Late Carboniferous through Middle Permian tuffites and sills from central Thailand are presented in the light of the problems of Southeast Asian ...
Altermann   +57 more
core   +1 more source

Geological significance of paleo-aulacogen and exploration potential of reef flat gas reservoirs in the Western Sichuan Depression

open access: yesNatural Gas Industry B, 2015
Confirming thick hydrocarbon generation center and discovering thick porous reservoirs are two key factors to start the Permian gas exploration of the Western Sichuan Depression.
Shu Liu, Meng Ning, Gangping Xie
doaj   +1 more source

Mercury anomalies associated with three extinction events (Capitanian Crisis, Latest Permian Extinction and the Smithian/Spathian Extinction) in NW Pangea [PDF]

open access: yes, 2015
Copyright © Cambridge University Press 2015. Strata of Permian - Early Triassic age that include a record of three major extinction events (Capitanian Crisis, Latest Permian Extinction and the Smithian/Spathian Extinction) were examined at the Festningen
Beauchamp, Benoit   +4 more
core   +1 more source

Significance of new breakthrough in and favorable targets of gas exploration in the Middle Permian system, Sichuan Basin

open access: yesNatural Gas Industry B, 2015
The Middle Permian system in the Sichuan Basin represents favorable conditions for the formation of natural gas reservoirs. However, only fracture-vuggy limestone gas reservoirs were discovered in early exploration, whose scales and results were limited.
Ping Shen   +7 more
doaj   +1 more source

Decoupling of morphological disparity and taxic diversity during the adaptive radiation of anomodont therapsids [PDF]

open access: yes, 2013
Adaptive radiations are central to macroevolutionary theory. Whether triggered by acquisition of new traits or ecological opportunities arising from mass extinctions, it is debated whether adaptive radiations are marked by initial expansion of taxic ...
Anderson MJ   +7 more
core   +1 more source

Sedimentary features and exploration targets of Middle Permian reservoirs in the SW Sichuan Basin

open access: yesNatural Gas Industry B, 2015
The exploration direction and targets for the large-scale Middle Permian gas reservoirs in the Sichuan Basin are hot spots and challenges in current exploration researches.
Guoming Xu   +3 more
doaj   +1 more source

Sequence stratigraphy, paleogeography, and coal accumulation regularity of major coal-accumulating periods in China

open access: yesInternational Journal of Coal Science & Technology, 2020
There are 9 major coal-accumulating periods during geological history in China, including the Early Carboniferous, Late Carboniferous-Early Permian, Middle Permian, Late Permian, Late Triassic, Early-Middle Jurassic, Early Cretaceous, Paleogene and ...
Longyi Shao   +13 more
doaj   +1 more source

Evaporites and the salinity of the ocean during the Phanerozoic: Implications for climate, ocean circulation and life [PDF]

open access: yes, 2005
A compilation of data on volumes and masses of evaporite deposits is used as the basis for reconstruction of the salinity of the ocean in the past.
Balukhovsky, A. N.   +5 more
core   +1 more source

Permian and Triassic Paleogeography of the Eastern Klamath Arc and Eastern Hayfork Subduction Complex, Klamath Mountains, California: Evidence from Lithotectonic Associations and Detrital Zircon [PDF]

open access: yes, 1991
Middle Permian and Middle Triassic volcanic-hypabyssal intrusive complexes form ensimatic arc deposits in the eastern Klamath terrane. Sedimentary matrix melange with blocks of sandstone, chert, and Tethyan fauna-bearing limestone compose the westward-
Miller, M. Meghan, Saleeby, Jason
core   +1 more source

Sedimentology and geochemistry of Middle–Upper Permian in northwestern Turpan–Hami Basin, China: Implication for depositional environments and petroleum geology

open access: yesEnergy Exploration & Exploitation, 2018
Studies have found that the Permian is another important stratum for petroleum exploration except the Jurassic coal measures within Turpan–Hami Basin recently.
Jian Song   +15 more
doaj   +1 more source

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