Discovery and significance of Quaternary aqueously deposited aeolian sandstones in the Sanhu area, Qaidam Basin, China

Abstract Influenced by neo-tectonic movement, the Sanhu area of China’s Qaidam Basin formed in the Quaternary in response to migration of its depocentre. A study of core material from the Qijia 1 Well reveals novel Quaternary aqueously deposited aeolian sandstones in the Qigequan Formation of the Sa...

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Autores principales:	Wen-Jing Mao, Shao-Bin Guo
Formato:	article
Lenguaje:	EN
Publicado:	KeAi Communications Co., Ltd. 2018
Materias:	Qaidam Basin Qigequan Formation Aqueously deposited Aeolian sandstones Paleoclimate Science Q Petrology QE420-499
Acceso en línea:	https://doaj.org/article/7842ac69c6714abcb28d1fc28faf281d
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spelling	oai:doaj.org-article:7842ac69c6714abcb28d1fc28faf281d2021-12-02T07:06:52ZDiscovery and significance of Quaternary aqueously deposited aeolian sandstones in the Sanhu area, Qaidam Basin, China10.1007/s12182-017-0214-x1672-51071995-8226https://doaj.org/article/7842ac69c6714abcb28d1fc28faf281d2018-01-01T00:00:00Zhttp://link.springer.com/article/10.1007/s12182-017-0214-xhttps://doaj.org/toc/1672-5107https://doaj.org/toc/1995-8226Abstract Influenced by neo-tectonic movement, the Sanhu area of China’s Qaidam Basin formed in the Quaternary in response to migration of its depocentre. A study of core material from the Qijia 1 Well reveals novel Quaternary aqueously deposited aeolian sandstones in the Qigequan Formation of the Sanhu area. Here we report the sedimentary petrology and geochemistry data of these deposits that constrain their depositional history. Evidence for aeolian influence during deposition includes: sorting and roundness, pure quartz sand with single mode grain size distribution and few suspension materials, very fine sand grain size distribution indicating sorting by saltation and suspension transport, dish-shaped and crescent-shaped pits in grain surfaces indicating aeolian transport and chemical composition similar to that observed in active or recent dune deposits, namely enrichment in SiO2, Na2O, and MgO relative to the sand dam sediment in the lakeshore. Identification of these aqueously deposited aeolian sandstones expands the range of sedimentary deposit types found in the Sanhu area and improves understanding of its paleoclimatic history.Wen-Jing MaoShao-Bin GuoKeAi Communications Co., Ltd.articleQaidam BasinQigequan FormationAqueously depositedAeolian sandstonesPaleoclimateScienceQPetrologyQE420-499ENPetroleum Science, Vol 15, Iss 1, Pp 41-50 (2018)
institution	DOAJ
collection	DOAJ
language	EN
topic	Qaidam Basin Qigequan Formation Aqueously deposited Aeolian sandstones Paleoclimate Science Q Petrology QE420-499
spellingShingle	Qaidam Basin Qigequan Formation Aqueously deposited Aeolian sandstones Paleoclimate Science Q Petrology QE420-499 Wen-Jing Mao Shao-Bin Guo Discovery and significance of Quaternary aqueously deposited aeolian sandstones in the Sanhu area, Qaidam Basin, China
description	Abstract Influenced by neo-tectonic movement, the Sanhu area of China’s Qaidam Basin formed in the Quaternary in response to migration of its depocentre. A study of core material from the Qijia 1 Well reveals novel Quaternary aqueously deposited aeolian sandstones in the Qigequan Formation of the Sanhu area. Here we report the sedimentary petrology and geochemistry data of these deposits that constrain their depositional history. Evidence for aeolian influence during deposition includes: sorting and roundness, pure quartz sand with single mode grain size distribution and few suspension materials, very fine sand grain size distribution indicating sorting by saltation and suspension transport, dish-shaped and crescent-shaped pits in grain surfaces indicating aeolian transport and chemical composition similar to that observed in active or recent dune deposits, namely enrichment in SiO2, Na2O, and MgO relative to the sand dam sediment in the lakeshore. Identification of these aqueously deposited aeolian sandstones expands the range of sedimentary deposit types found in the Sanhu area and improves understanding of its paleoclimatic history.
format	article
author	Wen-Jing Mao Shao-Bin Guo
author_facet	Wen-Jing Mao Shao-Bin Guo
author_sort	Wen-Jing Mao
title	Discovery and significance of Quaternary aqueously deposited aeolian sandstones in the Sanhu area, Qaidam Basin, China
title_short	Discovery and significance of Quaternary aqueously deposited aeolian sandstones in the Sanhu area, Qaidam Basin, China
title_full	Discovery and significance of Quaternary aqueously deposited aeolian sandstones in the Sanhu area, Qaidam Basin, China
title_fullStr	Discovery and significance of Quaternary aqueously deposited aeolian sandstones in the Sanhu area, Qaidam Basin, China
title_full_unstemmed	Discovery and significance of Quaternary aqueously deposited aeolian sandstones in the Sanhu area, Qaidam Basin, China
title_sort	discovery and significance of quaternary aqueously deposited aeolian sandstones in the sanhu area, qaidam basin, china
publisher	KeAi Communications Co., Ltd.
publishDate	2018
url	https://doaj.org/article/7842ac69c6714abcb28d1fc28faf281d
work_keys_str_mv	AT wenjingmao discoveryandsignificanceofquaternaryaqueouslydepositedaeoliansandstonesinthesanhuareaqaidambasinchina AT shaobinguo discoveryandsignificanceofquaternaryaqueouslydepositedaeoliansandstonesinthesanhuareaqaidambasinchina
_version_	1718399579173421056

Discovery and significance of Quaternary aqueously deposited aeolian sandstones in the Sanhu area, Qaidam Basin, China

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