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DOI	10.2343/geochemj.1.0014
	Origin of terra rossa over dolomite on the Yunnan-Guizhou Plateau, China
	Feng, Jin-Liang; Cui, Zhi-Jiu; Zhu, Li-Ping
通讯作者	Feng, JL (通讯作者)
发表日期	2009
ISSN	0016-7002
EISSN	1880-5973
起始页码	151
结束页码	166
卷号	43 期号:3
英文摘要	The origin of terra rossa and its relationship with its underlying carbonate rocks pose long-standing and controversial questions. This study focuses oil one 5.4 m thick terra rossa profile on dolomite. The authors examined the quartz content, size distribution of quartz grains, mineral composition, surface micro-texture and crystal morphology of quartz, oxygen isotope ratios of quartz, and other tracers in the terra rossa and underlying dolomite to determine the derivation of terra rossa. The results indicate that terra rossa in the Dashandong profile on the Yunnan-Guizhou Plateau, China, is an in Situ weathering solum. The terra rossa originates mostly from insoluble residues of the parent dolomite. The debris minerals (quartz and feldspar) derive completely from the parent dolomite. The clay minerals, and Al, Fe and Mn oxides and hydroxides likely have three origins. One portion derives from insoluble residues of the parent dolomite. A second portion converts from primary minerals in the parent dolomite. The last contribution comes from authigenic minerals from aqueous solutes transported by the water cycle. Authigenic minerals constitute the main components of the terra rossa. During weathering processes, the dolomite weathering functions as a trap against the escape of ill situ insoluble residues and external aqueous solutes by means of poly-genetic chemical and physical barriers.
关键词	RED MEDITERRANEAN SOILS BAUXITE DEPOSITS OXYGEN ISOTOPES QUARTZ DUST SEDIMENTS GENESIS KARST CLAY GEOCHEMISTRY
英文关键词	terra rossa; origin; dolomite; quartz; oxygen isotopic composition
语种	英语
WOS研究方向	Geochemistry & Geophysics
WOS类目	Geochemistry & Geophysics
WOS记录号	WOS:000267730900002
来源期刊	GEOCHEMICAL JOURNAL
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/257646
推荐引用方式 GB/T 7714	Feng, Jin-Liang,Cui, Zhi-Jiu,Zhu, Li-Ping. Origin of terra rossa over dolomite on the Yunnan-Guizhou Plateau, China[J]. 中国科学院青藏高原研究所,2009,43(3).
APA	Feng, Jin-Liang,Cui, Zhi-Jiu,&Zhu, Li-Ping.(2009).Origin of terra rossa over dolomite on the Yunnan-Guizhou Plateau, China.GEOCHEMICAL JOURNAL,43(3).
MLA	Feng, Jin-Liang,et al."Origin of terra rossa over dolomite on the Yunnan-Guizhou Plateau, China".GEOCHEMICAL JOURNAL 43.3(2009).