干旱区生态环境知识资源中心(Arid): Carbonate crusts of Paleolake Zhuyeze, Tengeri Desert, China: Formation mechanism and paleoenvironmental implications

Arid

DOI	10.1016/j.quaint.2019.11.030
	Carbonate crusts of Paleolake Zhuyeze, Tengeri Desert, China: Formation mechanism and paleoenvironmental implications
	Sun, Qingfeng 1; Zamanian, Kazem 2; Li, Yanrong 3; Wang, Hong 4,5; Colin, Christophe 6; Sun, Haixia 1
通讯作者	Sun, Qingfeng
来源期刊	QUATERNARY INTERNATIONAL
ISSN	1040-6182
EISSN	1873-4553
出版年	2019
卷号	532 页码:157-165
英文摘要	Carbonate crusts with unusual morphologies are scattered on the Holocene sand surface, i.e., dunes, which cover the Paleolake Zhuyeze bed in the Tengeri Desert, China. Two types of the crusts were identified. The first type contained fossilized wrinkles of plant root cortex, while the second type consisted of hollow chambers without the wrinkle features. Optical microscopy, scanning electron microscopy and cathodoluminescence analyses were performed to investigate the mineralogy and geochemistry of the crusts. Fossilized cortex texture imprints on the first type of crusts suggested that the crusts formed around the deceased rhizomes of reeds (Phragmites communis) as the nuclei of encrustation. Weakly oxidizing soil-sediment with rhizome was a prerequisite, which was favorable for rhizome decomposition to produce sufficient CO2 and HCO3- and generate carbonate minerals of encrustation on rhizome surfaces, with lake water as the main Ca2+ supply. A conceptual formation mechanism of the encrustation was conjectured. Similar to the formation mechanism of the first type, another type of crusts with chambers and without fossilized imprints of the cortex textures formed around the spherical rhizomes of Scirpus maritimus. The crust characteristics and other evidence suggested that the lake water was fresh; water plants, such as P. communis and S. maritimus, and snails previously inhabited the water; and encrustation reflected a stable, slow-oxidizing soil-sediment environment. These desert crusts provided insights to study paleoecology, paleohydrology and water-soil/sediment interface environment in the paleolake.
英文关键词	Carbonate crusts Aquatic plant roots Soil and sediment Encrustation mechanism Paleoenvironment Paleolake
类型	Article
语种	英语
国家	Peoples R China ; Germany ; USA ; France
收录类别	SCI-E
WOS记录号	WOS:000502533000014
WOS关键词	CALCRETE LAMINAR CRUSTS ; CALCAREOUS ROOT TUBES ; SHIYANG RIVER-BASIN ; TENGGER DESERT ; FERROMANGANESE NODULES ; ENVIRONMENTAL-CHANGES ; MAJOR CONTRIBUTOR ; SHELL CARBONATE ; ORGANIC-MATTER ; LAKE EVOLUTION
WOS类目	Geography, Physical ; Geosciences, Multidisciplinary
WOS研究方向	Physical Geography ; Geology
EI主题词	2019-11-10
来源机构	北京师范大学 ; E17
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/310805
作者单位	1.Northwest Normal Univ, Fac Geog, Lanzhou 730070, Gansu, Peoples R China; 2.Georg August Univ Goettingen, Dept Soil Sci Temperate Ecosyst, Buesgenweg 2, D-37077 Gottingen, Germany; 3.Taiyuan Univ Technol, Dept Earth Sci & Engn, Taiyuan 030024, Shanxi, Peoples R China; 4.Beijing Normal Univ, Interdisciplinary Res Ctr Earth Sci Frontier, Beijing 100875, Peoples R China; 5.Univ Illinois, Prairie Res Inst, Illinois State Geol Survey, Champaign, IL 61820 USA; 6.Univ Paris Sud, Univ Paris Saclay, Lab Geosci Paris Sud, CNRS,UMR 8148, Batiment 504, F-91405 Orsay, France
推荐引用方式 GB/T 7714	Sun, Qingfeng,Zamanian, Kazem,Li, Yanrong,et al. Carbonate crusts of Paleolake Zhuyeze, Tengeri Desert, China: Formation mechanism and paleoenvironmental implications[J]. 北京师范大学, E17,2019,532:157-165.
APA	Sun, Qingfeng,Zamanian, Kazem,Li, Yanrong,Wang, Hong,Colin, Christophe,&Sun, Haixia.(2019).Carbonate crusts of Paleolake Zhuyeze, Tengeri Desert, China: Formation mechanism and paleoenvironmental implications.QUATERNARY INTERNATIONAL,532,157-165.
MLA	Sun, Qingfeng,et al."Carbonate crusts of Paleolake Zhuyeze, Tengeri Desert, China: Formation mechanism and paleoenvironmental implications".QUATERNARY INTERNATIONAL 532(2019):157-165.