Geochemistry of the black rock series of lower Cambrian Qiongzhusi Formation, SW Yangtze Block, China: Reconstruction of sedimentary and tectonic environments

The black rock series in the Qiongzhusi Formation contains important geochemical information about the early Cambrian tectonic and ecological environment of the southwestern Yangtze Block. In this paper, major, trace, and rare earth element data are presented in an attempt to reveal the sediment sou...

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Autores principales:	Liu Hao, Wang Chan, Li Yong, Deng Jianghong, Deng Bin, Feng Yuexing, Chen Hui, Xu Yunlong, Zhao Shaoze
Formato:	article
Lenguaje:	EN
Publicado:	De Gruyter 2021
Materias:	geochemistry black rock series cambrian depositional environment yangtze block south china Geology QE1-996.5
Acceso en línea:	https://doaj.org/article/2607ca5d9af649f98e1705a5f57158f9
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spelling	oai:doaj.org-article:2607ca5d9af649f98e1705a5f57158f92021-12-05T14:10:48ZGeochemistry of the black rock series of lower Cambrian Qiongzhusi Formation, SW Yangtze Block, China: Reconstruction of sedimentary and tectonic environments2391-544710.1515/geo-2020-0228https://doaj.org/article/2607ca5d9af649f98e1705a5f57158f92021-02-01T00:00:00Zhttps://doi.org/10.1515/geo-2020-0228https://doaj.org/toc/2391-5447The black rock series in the Qiongzhusi Formation contains important geochemical information about the early Cambrian tectonic and ecological environment of the southwestern Yangtze Block. In this paper, major, trace, and rare earth element data are presented in an attempt to reveal the sediment source during the deposition of the early Cambrian Qiongzhusi Formation and to reconstruct the sedimentary tectonic environment and weathering intensity during that time. The basin primarily received continental clastic material with neutral-acidic igneous rocks from a stable source and with a moderate level of maturity during the depositional period of the Qiongzhusi Formation. Furthermore, the strata were weakly influenced by submarine hydrothermal fluids during diagenesis. The reconstruction of the sedimentary environment and weathering intensity shows that P2O5 enrichment and water body stratification occurred due to the effects of upwelling ocean currents during the depositional period of the Qiongzhusi Formation. The combination of upwelling and bottom-water hydrothermal fluids led to environmental changes in the study area, from dry and hot to moist and warm. Last, the reconstruction of the tectonic environment of the Qiongzhusi Formation indicates that deposition occurred in continental slope and marginal marine environments associated with a continental arc tectonic system. These findings provide an essential basis for the comprehensive reconstruction of the early Cambrian sedimentary environment of the Yangtze Block.Liu HaoWang ChanLi YongDeng JianghongDeng BinFeng YuexingChen HuiXu YunlongZhao ShaozeDe Gruyterarticlegeochemistryblack rock seriescambriandepositional environmentyangtze blocksouth chinaGeologyQE1-996.5ENOpen Geosciences, Vol 13, Iss 1, Pp 166-187 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	geochemistry black rock series cambrian depositional environment yangtze block south china Geology QE1-996.5
spellingShingle	geochemistry black rock series cambrian depositional environment yangtze block south china Geology QE1-996.5 Liu Hao Wang Chan Li Yong Deng Jianghong Deng Bin Feng Yuexing Chen Hui Xu Yunlong Zhao Shaoze Geochemistry of the black rock series of lower Cambrian Qiongzhusi Formation, SW Yangtze Block, China: Reconstruction of sedimentary and tectonic environments
description	The black rock series in the Qiongzhusi Formation contains important geochemical information about the early Cambrian tectonic and ecological environment of the southwestern Yangtze Block. In this paper, major, trace, and rare earth element data are presented in an attempt to reveal the sediment source during the deposition of the early Cambrian Qiongzhusi Formation and to reconstruct the sedimentary tectonic environment and weathering intensity during that time. The basin primarily received continental clastic material with neutral-acidic igneous rocks from a stable source and with a moderate level of maturity during the depositional period of the Qiongzhusi Formation. Furthermore, the strata were weakly influenced by submarine hydrothermal fluids during diagenesis. The reconstruction of the sedimentary environment and weathering intensity shows that P2O5 enrichment and water body stratification occurred due to the effects of upwelling ocean currents during the depositional period of the Qiongzhusi Formation. The combination of upwelling and bottom-water hydrothermal fluids led to environmental changes in the study area, from dry and hot to moist and warm. Last, the reconstruction of the tectonic environment of the Qiongzhusi Formation indicates that deposition occurred in continental slope and marginal marine environments associated with a continental arc tectonic system. These findings provide an essential basis for the comprehensive reconstruction of the early Cambrian sedimentary environment of the Yangtze Block.
format	article
author	Liu Hao Wang Chan Li Yong Deng Jianghong Deng Bin Feng Yuexing Chen Hui Xu Yunlong Zhao Shaoze
author_facet	Liu Hao Wang Chan Li Yong Deng Jianghong Deng Bin Feng Yuexing Chen Hui Xu Yunlong Zhao Shaoze
author_sort	Liu Hao
title	Geochemistry of the black rock series of lower Cambrian Qiongzhusi Formation, SW Yangtze Block, China: Reconstruction of sedimentary and tectonic environments
title_short	Geochemistry of the black rock series of lower Cambrian Qiongzhusi Formation, SW Yangtze Block, China: Reconstruction of sedimentary and tectonic environments
title_full	Geochemistry of the black rock series of lower Cambrian Qiongzhusi Formation, SW Yangtze Block, China: Reconstruction of sedimentary and tectonic environments
title_fullStr	Geochemistry of the black rock series of lower Cambrian Qiongzhusi Formation, SW Yangtze Block, China: Reconstruction of sedimentary and tectonic environments
title_full_unstemmed	Geochemistry of the black rock series of lower Cambrian Qiongzhusi Formation, SW Yangtze Block, China: Reconstruction of sedimentary and tectonic environments
title_sort	geochemistry of the black rock series of lower cambrian qiongzhusi formation, sw yangtze block, china: reconstruction of sedimentary and tectonic environments
publisher	De Gruyter
publishDate	2021
url	https://doaj.org/article/2607ca5d9af649f98e1705a5f57158f9
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Geochemistry of the black rock series of lower Cambrian Qiongzhusi Formation, SW Yangtze Block, China: Reconstruction of sedimentary and tectonic environments

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