Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1590/S0100-06832013000300001 |
ORIGIN OF SANDSTONES FROM THE GUARA FORMATION AND THEIR PEDOLOGIC COVER IN RIO GRANDE DO SUL, BRAZIL | |
Medeiros, Edgardo Ramos1; Pedron, Fabricio de Araujo2; Reinert, Dalvan Jose2; Volpato Sccoti, Anderson Augusto3 | |
通讯作者 | Medeiros, Edgardo Ramos |
来源期刊 | REVISTA BRASILEIRA DE CIENCIA DO SOLO
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ISSN | 0100-0683 |
出版年 | 2013 |
卷号 | 37期号:3页码:555-564 |
英文摘要 | In the west and southwest regions of Rio Grande do Sul (RS) there are extensive areas with fragile soils developed from sandy sediments of the continental Mesozoic Parana Basin. Inappropriate land use has accelerated the process of sandy desertification in these areas. In this case, the knowledge of soils is critical for the choice of appropriate management systems to regain sustainability. The objectives of this study were to understand the evolution and describe the relationships, in terms of origin, between the rock and its respective pedological cover by studying profiles developed from sandstones of the Guara Formation in RS. Soil chemical, physical, mineralogical, and morphological analyses were carried out with samples of two Dystrudept and one Rhodudult profile. There was evidence of external addition of material to the studied profiles, mainly of ilmenite, resulting from the alteration of areas with basic volcanic rocks in the surroundings. The inclusion of allochthonous material in the soil profiles was responsible for a pedogenesis leading to B horizons with higher clay contents, a feature of Ultisols and Cambisols. The data suggest the identification and interpretation of a sixth pedogenetic component, defined as the geological context of the surroundings. |
英文关键词 | pedology sandy soils desertification Pampa ecosystem |
类型 | Article |
语种 | 葡萄牙语 |
国家 | Brazil |
收录类别 | SCI-E |
WOS记录号 | WOS:000322066500001 |
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/2XILL650/179779 |
作者单位 | 1.Univ Fed Santa Maria UFSM, Dept Geociencias, BR-97105900 Santa Maria, RS, Brazil; 2.Univ Fed Santa Maria, Dept Solos, Santa Maria, RS, Brazil; 3.Univ Fed Santa Maria, Santa Maria, RS, Brazil |
推荐引用方式 GB/T 7714 | Medeiros, Edgardo Ramos,Pedron, Fabricio de Araujo,Reinert, Dalvan Jose,et al. ORIGIN OF SANDSTONES FROM THE GUARA FORMATION AND THEIR PEDOLOGIC COVER IN RIO GRANDE DO SUL, BRAZIL[J],2013,37(3):555-564. |
APA | Medeiros, Edgardo Ramos,Pedron, Fabricio de Araujo,Reinert, Dalvan Jose,&Volpato Sccoti, Anderson Augusto.(2013).ORIGIN OF SANDSTONES FROM THE GUARA FORMATION AND THEIR PEDOLOGIC COVER IN RIO GRANDE DO SUL, BRAZIL.REVISTA BRASILEIRA DE CIENCIA DO SOLO,37(3),555-564. |
MLA | Medeiros, Edgardo Ramos,et al."ORIGIN OF SANDSTONES FROM THE GUARA FORMATION AND THEIR PEDOLOGIC COVER IN RIO GRANDE DO SUL, BRAZIL".REVISTA BRASILEIRA DE CIENCIA DO SOLO 37.3(2013):555-564. |
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