Results 81 to 90 of about 41,082 (236)

Early oil charging from Sinian shales in Ordovician carbonates of the Tabei Uplift, Tarim Basin: Evidence from biomarkers

open access: yesPetroleum Research
Despite over 40 years of exploration focusing on the deep to ultra-deep Ordovician carbonates as major hydrocarbon targets in the Tarim Basin, the identification of their source rocks remains elusive.
Qingxiu Zeng   +5 more
doaj   +1 more source

The Lower Precambrian in the structure of paleozoic in the Subpolar Urals

open access: yesДоклады Академии наук, 2019
In many polymetamorphic complexes of the Urals, rocks with Early Precambrian age marks have been established. But only with respect to the two polymetamorphic complexes located on the western slope of the Southern Urals: the Taratash and Aleksandrov, their indisputable belonging to the Archean-Paleoproterozoic section is recognized.
Yu. I. Pystina   +2 more
openaire   +2 more sources

Low Water Content of the Lower Continental Crust Induced by Decompression Melting: Evidence From the Weichang Granulite Xenoliths in the Northern North China Craton

open access: yesGeochemistry, Geophysics, Geosystems
The water content of granulite xenoliths from the Cenozoic Weichang basalts in the northern North China Craton (NCC) is investigated to constrain the nature and evolution of the lower crust.
Yuanyuan Liu   +5 more
doaj   +1 more source

DEBRIS SOURCE AREA EVOLUTION DURING FORMATION OF THE URALIAN FOREDEEP AT THE SAKMARIAN STAGE OF THE EARLY PERMIAN ACCORDING TO U-Pb LA-ICP-MS ISOTOPE DATING OF DETRITAL ZIRCONS

open access: yesГеодинамика и тектонофизика
The article presents the results of studying the sources of terrigenous material deposition in the Uralian foredeep according to U-Pb dating of detrital zircons from terrigenous rocks of four stratigraphic levels of the Kapysov formation (Sakmarian stage)
E. A. Volodina   +6 more
doaj   +1 more source

Volcanic passive continental margin beneath Maitri station in central DML, East Antarctica: constraints from crustal shear velocity through receiver function modelling

open access: yesPolar Research, 2017
Dronning Maud Land (DML) in East Antarctica is considered to be a key area for the reconstruction of the Gondwana supercontinent. We investigate the crustal shear wave velocity (Vs) model beneath the Maitri station, situated in the central DML of East ...
Sandeep Gupta, Nagaraju Kanna, A. Akilan
doaj   +1 more source

Stratigraphic results of diamond drilling of the Hunterston Dome, Tasmania: implications for palaeogeography and hydrocarbon potential [PDF]

open access: yes, 2003
The structure known as the Hunterston Dome, in central Tasmania, was drilled to a depth of 1324 m, through Jurassic dolerite, Lower Parmeener Supergroup and into Precambrian dolomite basement.
Burrett, CF   +3 more
core   +2 more sources

From source to sink in central Gondwana: Exhumation of the Precambrian basement rocks of Tanzania and sediment accumulation in the adjacent Congo basin [PDF]

open access: yes, 2016
Apatite fission track (AFT) and (U-Th)/He (AHe) thermochronometry data are reported and used to unravel the exhumation history of crystalline basement rocks from the elevated (>1000 m above sea level) but low-relief Tanzanian Craton.
Brown, Roderick   +5 more
core   +1 more source

Subparallel thrust and normal faulting in Albania and the roles of gravitational potential energy and rheology contrasts in mountain belts [PDF]

open access: yes, 2009
The active tectonics of Albania and surrounding regions, on the eastern margin of the Adriatic Sea, is characterized by subparallel thrust and normal faulting which, we suggest, is likely to be related to gravitational potential energy contrasts between ...
Boait, Fran   +4 more
core   +1 more source

THE ZIRCON CHRONOLOGY OF THE INTRUSIVE MAGMATISM OF THE KANIN PENINSULA

open access: yesИзвестия высших учебных заведений: Геология и разведка, 2018
The Kanin Peninsula is an elevated block of the Timan Ridge where Precambrian sedimentary-metamorphic sequences and magmatic  rocks, intruding them, form the Kanin Kamen Ridge.
V. L. ANDREICHEV   +3 more
doaj   +1 more source

Search features of hydrocarbons in the lower oil and gas complex for the different subregions of the Dnieper-Donetsk cavity Article 2. The oil and gas deposits search areas in the Romensko-Okhtyrsky subregion

open access: yesМінеральні ресурси України, 2015
Generalized previous studies and are further evidence of productivity lower oil and gas complex (IPC) in Romensko-Ohtyrsky subregion of Dnieper-Donets cavity.
V. P. Lebed
doaj  

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