干旱区生态环境知识资源中心(Arid): Pedosedimentary records of Holocene paleoenvironments in a dryland alluvial fan system in Sonora, NW-Mexico

Arid

DOI	10.3232/SJSS.2018.V8.N2.09
	Pedosedimentary records of Holocene paleoenvironments in a dryland alluvial fan system in Sonora, NW-Mexico
	Ibarra, G.; Solleiro-Rebolledo, E.; Ayala, E.; Cabadas, H.; Lopez-Martinez, R.
通讯作者	Ibarra, G
来源期刊	SPANISH JOURNAL OF SOIL SCIENCE
ISSN	2253-6574
出版年	2018
卷号	8 期号:2 页码:275-292
英文摘要	In this work we present a detailed micromorphological analysis of a sequence of palaeosols and sedimentary units at La Playa archaeological site. This sequence is from the Late Pleistocene (Marine Isotopic Stage 2) to the Late Holocene. Complementing the micromorphological study, a geomorphological analysis is provided, in order to establish the origin of the landscape units. The results show that according to the geomorphology, La Playa constitutes an alluvial fan, formed by a complex, braided channel. The older unit, the San Rafael Palaeosol (SRP) is the most developed and has a set of features associated with the changing paleoenvironmental conditions such as weathering of the primary minerals, clay illuviation (evidencing humid conditions of the Terminal Pleistocene), pedogenic carbonate accumulation in the A horizon (related to dry environments of Altithermal). The SRP is buried by fluvial sediments, which include different facies interpreted as: floodplain, sandbars, and channels. These sedimentation events are associated with the end of the Altithermal period and evidence more active geomorphic processes, probably due to strong storms causing flooding and the migration of the main tributary. Above the sedimentary unit, the Boquillas Palaeosol (BOP), formed during the Late Holocene, is derived from fluvial-alluvial deposits causing a syn-sedimentary soil, with a more incipient development as indicated by micromorphological features.
英文关键词	Palaeosols micromorphology geomorphology Altithermal alluvial fan facies
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:000438851100011
WOS关键词	CHIHUAHUAN DESERT ; BABICORA ; BASIN ; SOILS
WOS类目	Soil Science
WOS研究方向	Agriculture
来源机构	Universidad Nacional Autónoma de México
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/332911
作者单位	[Ibarra, G.; Ayala, E.] Univ Nacl Autonoma Mexico, Posgrad Ciencias Tierra, Mexico City 04510, DF, Mexico; [Solleiro-Rebolledo, E.; Lopez-Martinez, R.] Univ Nacl Autonoma Mexico, Inst Geol, Mexico City, DF, Mexico; [Cabadas, H.] Univ Autonoma Estado Mexico, Fac Geog, Toluca, Mexico
推荐引用方式 GB/T 7714	Ibarra, G.,Solleiro-Rebolledo, E.,Ayala, E.,et al. Pedosedimentary records of Holocene paleoenvironments in a dryland alluvial fan system in Sonora, NW-Mexico[J]. Universidad Nacional Autónoma de México,2018,8(2):275-292.
APA	Ibarra, G.,Solleiro-Rebolledo, E.,Ayala, E.,Cabadas, H.,&Lopez-Martinez, R..(2018).Pedosedimentary records of Holocene paleoenvironments in a dryland alluvial fan system in Sonora, NW-Mexico.SPANISH JOURNAL OF SOIL SCIENCE,8(2),275-292.
MLA	Ibarra, G.,et al."Pedosedimentary records of Holocene paleoenvironments in a dryland alluvial fan system in Sonora, NW-Mexico".SPANISH JOURNAL OF SOIL SCIENCE 8.2(2018):275-292.