Results 51 to 60 of about 2,604 (197)

Genesis of crystalline crust and lithosphere of ancient platforms according to data on the hot heterogeneous accretion of the Earth

Литосфера, 2017
Compositions of gneisses from the Early Precambrian crystalline complexes of the Aldan shield and of mantle xenoliths from kimberlites plot along the magmatic fractionation trends.
Vladimir S. Shkodzinskii
doaj   +2 more sources

Geophysical update of the diameter of the Zhamanshin impact structure, Kazakhstan

Meteoritics &Planetary Science, EarlyView.
Abstract The rim of the 0.9‐Ma‐old Zhamanshin impact crater in Kazakhstan is considered to be almost completely exposed via a series of hills surrounding a central flat area, indicating an apparent diameter of 14 km. This would make Zhamanshin the second largest impact crater of the Quaternary period. However, the overall geometry of these hills is not
Yoann Quesnel, Dilyara M. Kuzina, Jérôme Gattacceca, Minoru Uehara, Ayrat G. Kharisov, Dmitry D. Badyukov, Pierre Rochette   +6 more
wiley   +1 more source

Seismic Reflection Profiling Reveals New Accretionary Structure in the Solonker Zone of the Central Asian Orogenic Belt

Geophysical Research Letters
The Central Asian Orogenic Belt (CAOB) was formed by the aggregation and collage of numerous Paleozoic subduction‐accretion assemblages and Precambrian microcontinental blocks.
Xiao‐Miao Tan, Jian‐Bo Zhou, Hui‐Lin Li, Hai‐Yan Wang, He‐Sheng Hou, Wen‐Hui Li, Ying Rao, Rui Gao   +7 more
doaj   +1 more source

GRANITES OF THE NORTHERN TIMAN – PROBABLE INDICATORS OF NEOPROTEROZOIC STAGES OF RODINIA BREAKUP

Геодинамика и тектонофизика, 2020
The Northern Timan is an uplifted block of Late Precambrian basement of the Timan Ridge, where Neoproterozoic sedimentary-metamorphic rocks of the Barmin Group are cut by intrusive rocks of different composition and all unconformably overlain by Lower ...
V. L. Andreichev, A. A. Soboleva, O. V. Udoratina, Yu. L. Ronkin, M. A. Coble, E. L. Miller   +5 more
doaj   +1 more source

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

Petroleum 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, Peng Sun, Xingchao Jiang, Heng Zhang, Qifei Fang, Lei Jiang   +5 more
doaj   +1 more source

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

Geochemistry, 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, Dongya Zou, Xiaoyan Gu, Yantao Hao, Hongfu Zhang, Shenghua Zhou   +5 more
doaj   +1 more source

Analysis of structural factors of peat deposit formation using geoinformational technologies

Мінеральні ресурси України
A combination of remote sensing studies was conducted taking into account a priori geological and geophysical data in order to establish a probable spatial and genetic connection of known peat deposits in the north-western part of the Korosten Pluton ...
O. T. Azimov
doaj   +1 more source

Potential and favorable areas of petroleum exploration of ultra-deep marine strata more than 8000 m deep in the Tarim Basin, Northwest China

Journal of Natural Gas Geoscience, 2018
At present, deep and ultra-deep oil and gas have become the research and exploration hotspots. With little drilling data available, the geological understanding on deep formations is still in the exploratory stage, but most petroleum geologists have ...
Guangyou Zhu, Yinghui Cao, Lei Yan, Haijun Yang, Chonghao Sun, Zhiyao Zhang, Tingting Li, Yongquan Chen   +7 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

Геодинамика 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, A. V. Tevelev, A. A. Borisenko, E. V. Koptev, A. S. Novikova, А. S. Dubenskiy, K. G. Erofeeva   +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

Polar 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