干旱区生态环境知识资源中心(Arid): Soil micromorphogenesis and Early Holocene paleoclimate at the desert margin of Southern Arabia

Arid

DOI	10.3232/SJSS.2013.V3.N2.04
	Soil micromorphogenesis and Early Holocene paleoclimate at the desert margin of Southern Arabia
	Kuehn, P.; Pietsch, D.
通讯作者	Kuhn, P
来源期刊	SPANISH JOURNAL OF SOIL SCIENCE
ISSN	2253-6574
出版年	2013
卷号	3 期号:2 页码:59-77
英文摘要	The Ramlat as-Sab'atayn desert margin near Ma'rib, Yemen, displays well-preserved Early Holocene paleosols that are documented by micromorphological and pedological data. The buried soils, which are represented by Ahb horizons, indicate soil formation mostly before 8.3 cal ka BP. In contrast, sandy cover sediments without signs of pedogenesis appeared between 8.3 and 6.6 cal ka BP due to increasing aridity. Characteristic micromorphological features of the cover sediments are a single grain microstructure, crystallitic b-fabric, predominant occurrence of fresh sideromelane, and remnants of microlayers. Micromorphological pedogenic features in the buried Ah horizons include a subangular blocky microstructure, undifferentiated b-fabric as a result of enrichment of organic matter and decalcification, and the predominant occurrence of completely altered sideromelane. Most of these horizons appeared to be nearly completely decalcified so that in parts a stipple speckled b-fabric and neoformed clay coatings could be detected as a result of stronger weathering and soil formation. Pedogenic data provide important information about Holocene climate fluctuations, including the amount of precipitation, which was calculated on the basis of geochemical data from buried A, AB and B horizons. The buried paleosols represent moist climate conditions with precipitation ranging from 400 to 600 mm a(-1).
英文关键词	Holocene paleosol formation micromorphology Yemen
类型	Article
语种	英语
开放获取类型	DOAJ Gold
收录类别	ESCI
WOS记录号	WOS:000219705200006
WOS类目	Soil Science
WOS研究方向	Agriculture
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/330450
作者单位	[Kuehn, P.; Pietsch, D.] Eberhard Karls Univ Tubingen, Inst Geog, Lab Soil Sci & Geoecol, Rumelinstr 19-23, D-72070 Tubingen, Germany
推荐引用方式 GB/T 7714	Kuehn, P.,Pietsch, D.. Soil micromorphogenesis and Early Holocene paleoclimate at the desert margin of Southern Arabia[J],2013,3(2):59-77.
APA	Kuehn, P.,&Pietsch, D..(2013).Soil micromorphogenesis and Early Holocene paleoclimate at the desert margin of Southern Arabia.SPANISH JOURNAL OF SOIL SCIENCE,3(2),59-77.
MLA	Kuehn, P.,et al."Soil micromorphogenesis and Early Holocene paleoclimate at the desert margin of Southern Arabia".SPANISH JOURNAL OF SOIL SCIENCE 3.2(2013):59-77.