Results 31 to 40 of about 3,624 (186)

Evolutionary radiation of large‐bodied gorgonopsians from the lower Abrahamskraal formation of South Africa

open access: yesThe Anatomical Record, EarlyView.
Abstract The middle Permian represents a critical interval in therapsid evolution, when gorgonopsians emerged as some of the first specialized apex predators within terrestrial ecosystems. Despite their significance, the early diversification of Gorgonopsia in Gondwana remains poorly understood due to scarcity and fragmentary material.
Zanildo Macungo   +5 more
wiley   +1 more source

CARBONIFEROUS-PERMIAN STRATIGRAPHY AND FUSULINIDS OF THE EAST IRAN. GZEHELIAN AND ASSELIAN DEPOSITS OF THE OZBAK-KUH REGION

open access: yesRivista Italiana di Paleontologia e Stratigrafia, 2003
Deposits of the Gzhelian-Asselian Stages were recognized by fusulinid occurrences in the upper part of the Sardar Formation (Zaladu Member) of the Ozbak Kuh region, East Iran.
ERNST JA. LEVEN, AZIZOLAH TAHERI
doaj   +1 more source

The upper Permian flora of England

open access: yesBulletin of the British Museum (Natural History) Geology, 1958
(Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
openaire   +1 more source

Multiple injection techniques to stimulate complex fracture networks in coal reservoirs: A case study on gas disaster reduction of subsurface coal mine in southwest China

open access: yesDeep Underground Science and Engineering, EarlyView.
An experimental device for physical simulation of hydraulic fracturing, comprising: a load‐bearing mechanism with multiple interconnected plates that collectively form an sample chamber; a load‐generating mechanisms, with multiple load‐generating mechanisms arranged within the experimental chamber.
Delei Shang   +5 more
wiley   +1 more source

PROVENANCE OF THE PERMIAN-TRIASSIC RED BEDS FROM THE EASTERN PART OF THE MOSCOW BASIN, EAST EUROPEAN PLATFORM: U-Pb LA-ICP-MS AND RAMAN SPECTROSCOPY DETRITAL ZIRCON DATA

open access: yesГеодинамика и тектонофизика, 2023
We present the first systematic results of U-Pb LA-ICP-MS dating of detrital zircons from 12 samples representing different stratigraphic levels of 5 sections of the Permian-Triassic rocks, located within the eastern part of the Moscow basin (syneclise) –
A. V. Chistyakova   +6 more
doaj   +1 more source

Dynamic geo‐hydrogeological monitoring‐driven situational awareness for real‐time floor water inrush risk prediction in deep mining

open access: yesDeep Underground Science and Engineering, EarlyView.
The fused data extracted from the distributed monitoring system as the data basis, combined with dynamic geological data, are imported into a deep learning model. As the geological conditions of mining and excavation change, the risk of water inrush at the working face is retrieved in real time.
Yongjie Li   +4 more
wiley   +1 more source

The first Permian centipedes from Russia [PDF]

open access: yesActa Palaeontologica Polonica, 2018
While fossils of myriapods are well-known from the Devonian and Carboniferous, until recently sediments from the Permian have been largely devoid of the remains of this important group of terrestrial arthropods.
Alexander V. Khramov   +3 more
doaj   +1 more source

Permian in north Bulgaria. II. Formal lithostratigraphy related to the Upper Permian

open access: yesGeologica Balcanica, 1993
The following nine official lithostratigraphic units are subdivided and described within the frames of an Upper Permian Lower Danube Group in accord with the requirements of the Bulgarian Stratigraphic Code: Mirovo Formation, Vetrino Formation (with Žitnica and Hrabrovo Menber), Târgoviste Formation (with Trastikovo and Bezvodica Member), Totleben ...
openaire   +1 more source

Spatial Variations in Methane Content and Their Main Controlling Factors of the Deep‐Buried Coalbed in the Nalinhe–Hengshan Area, Ordos Basin

open access: yesEnergy Science &Engineering, EarlyView.
Ash yield is the primary geological factor controlling the spatial variations in the total gas content of the deep‐buried coalbed methane in the Nalinhe‐Hengshan area, Ordos Basin. However, porosity dominates the differential enrichment of the free gas content of the deep‐buried coalbed methane in the Nalinhe‐Hengshan area, Ordos Basin.
Shi Yunhe   +9 more
wiley   +1 more source

Origin and Depositional Environments of the Evaporite and Carbonate Complex (Upper Permian) from the Central Part of the Dinarides (Southern Croatia and Western Bosnia)

open access: yesGeologia Croatica, 2010
The Upper Permian sediments from central part of the Dinarides contain three main facies : 1. - carbonates; 2.- evaporites with early diageneticaldolomites and 3.- clastic rocks (siltstones and sandstones) and one special rock type- carbonate ...
Josip Tišljar
doaj   +1 more source

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