Terrestrial mollusk evidence for the origin and sedimentary environment of the Late Tertiary Red Clay Formation in the Loess Plateau, China

doi:10.1360/03wd0519

	Terrestrial mollusk evidence for the origin and sedimentary environment of the Late Tertiary Red Clay Formation in the Loess Plateau, China
	Pei, YP; Wu, NQ; Li, FJ
刊名	CHINESE SCIENCE BULLETIN
	2004-05-01
卷号	49 期号:10 页码:1072-1076
关键词	mollusk fossils Red Clay late Tertiary environment changes
ISSN号	1001-6538
DOI	10.1360/03wd0519
文献子类	Article
英文摘要	The origin and sedimentary environment of the Late Tertiary (Neogene) Red Clay Formation in northern China had long been controversial. A new mollusk record from the Xifeng red clay (red-earth) sequence in the central Loess Plateau provides the biological evidence for addressing questions of its origin and environmental implication. The study of composition and preservation condition of seventy mollusk fossil assemblages reveals the initial ecological condition of the red clay formation, avoiding the effect of post-deposited alteration. The result shows that all of identifiable mollusk species are composed of terrestrial taxa, most of them are the common species found in the overlying Quaternary loess-palleosol sequence. Most of fossil individuals preserved in the red clay strata are in living conditions based on the investigation of fieldwork, indicating the original population. Thus, the mollusk fossil assemblages can be used as an indicator of primary environment of the red clay formation. The mollusk record from the Xifeng red clay sequence supports the view that the red clay is an aeolian origin, similar to the overlying Quaternary loess deposits. Our data also reveal the history of environmental changes at Xifeng from 6.2-2.4 Ma, which is coupled in phase with the formation and development of the Arctic ice sheets and the process of the Tibetan Plateau uplift. Both may be the major cause and forcing mechanisms of the late Tertiary environmental changes in the Loess Plateau.
WOS关键词	GANSU PROVINCE ; MAGNETOSTRATIGRAPHY ; PLIOCENE ; VARIABILITY ; SEQUENCES ; RECORD ; XIFENG ; KA
WOS研究方向	Science & Technology - Other Topics
语种	英语
出版者	SCIENCE CHINA PRESS
WOS记录号	WOS:000223146800016
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/79303]
专题	中国科学院地质与地球物理研究所
通讯作者	Wu, NQ
作者单位	Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China
推荐引用方式 GB/T 7714	Pei, YP,Wu, NQ,Li, FJ. Terrestrial mollusk evidence for the origin and sedimentary environment of the Late Tertiary Red Clay Formation in the Loess Plateau, China[J]. CHINESE SCIENCE BULLETIN,2004,49(10):1072-1076.
APA	Pei, YP,Wu, NQ,&Li, FJ.(2004).Terrestrial mollusk evidence for the origin and sedimentary environment of the Late Tertiary Red Clay Formation in the Loess Plateau, China.CHINESE SCIENCE BULLETIN,49(10),1072-1076.
MLA	Pei, YP,et al."Terrestrial mollusk evidence for the origin and sedimentary environment of the Late Tertiary Red Clay Formation in the Loess Plateau, China".CHINESE SCIENCE BULLETIN 49.10(2004):1072-1076.