干旱区生态环境知识资源中心(Arid): THE USE OF PALEOSOLS AND ALTERATION PROFILES FOR THE IDENTIFICATION AND ANALYSIS OF REGIONAL GEOMORPHIC SURFACES: THE CASE OF SERRA DE ITAQUERI (SP)

Arid

	THE USE OF PALEOSOLS AND ALTERATION PROFILES FOR THE IDENTIFICATION AND ANALYSIS OF REGIONAL GEOMORPHIC SURFACES: THE CASE OF SERRA DE ITAQUERI (SP)
	Bernardes Ladeira, Francisco Sergio; dos Santos, Marcilene
通讯作者	Ladeira, FSB
来源期刊	REVISTA BRASILEIRA DE GEOMORFOLOGIA
ISSN	1519-1540
EISSN	2236-5664
出版年	2005
卷号	6 期号:2 页码:3-20
英文摘要	The Itaqueri Formation, Cenozoic, is located in Itaqueri's Hill, Southeast of Brazil. It is composed by sediments deposited in environment of alluvial fans under semi-arid conditions. The remains of morphotectonic and paleopedological features in the area characterize a complex evolution that involves important climate changes, different episodes of tectonic motion and different positional events. The analysis of sediments and paleosoils indicates two events of deposition of alluvial fans alternated by periods of climate more humid in which developed two alteration profiles. The first profile developed a thick Ultisol (US Soil Taxonomy) in the sediments associated to the first depositional event that was subsequently reached by a silicification process. The second profile developed a very thick lateritic feature in the sediments associated to the second depositional event. The analysis of alteration profiles and paleosoils indicates three geomorphic surfaces in the area: the first associated to basal deposits of Itaqueri Formation wich truncated the Botucatu Formation and Serra Geral Formation; the second associated to the development of soil wich were silicified later; and the third associated to development of a lateritic profile. A distinctive erosional unconformity separates both materials. Cenozoic tectonic motions uplifted and lowered the area successively which implied relief inversion, partial destruction of the sediments and paleosoils, and exposures in different altitudes along the area.
英文关键词	Geomorphic surface Paleosol Itaqueri Formation
类型	Article
语种	西班牙语
开放获取类型	DOAJ Gold
收录类别	ESCI
WOS记录号	WOS:000216923100001
WOS类目	Geography, Physical
WOS研究方向	Physical Geography
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/328650
作者单位	[Bernardes Ladeira, Francisco Sergio] Univ Estadual Campinas, Inst Geociencias, Dept Geog, Campinas, Brazil; [dos Santos, Marcilene] FEUC Fac Euclides Cunha, Sao Jose Do Rio Preto, SP, Brazil
推荐引用方式 GB/T 7714	Bernardes Ladeira, Francisco Sergio,dos Santos, Marcilene. THE USE OF PALEOSOLS AND ALTERATION PROFILES FOR THE IDENTIFICATION AND ANALYSIS OF REGIONAL GEOMORPHIC SURFACES: THE CASE OF SERRA DE ITAQUERI (SP)[J],2005,6(2):3-20.
APA	Bernardes Ladeira, Francisco Sergio,&dos Santos, Marcilene.(2005).THE USE OF PALEOSOLS AND ALTERATION PROFILES FOR THE IDENTIFICATION AND ANALYSIS OF REGIONAL GEOMORPHIC SURFACES: THE CASE OF SERRA DE ITAQUERI (SP).REVISTA BRASILEIRA DE GEOMORFOLOGIA,6(2),3-20.
MLA	Bernardes Ladeira, Francisco Sergio,et al."THE USE OF PALEOSOLS AND ALTERATION PROFILES FOR THE IDENTIFICATION AND ANALYSIS OF REGIONAL GEOMORPHIC SURFACES: THE CASE OF SERRA DE ITAQUERI (SP)".REVISTA BRASILEIRA DE GEOMORFOLOGIA 6.2(2005):3-20.