干旱区生态环境知识资源中心(Arid): Semi-arid soils from a topolithosequence at James Ross Island, Weddell Sea region, Antarctica: Chemistry, mineralogy, genesis and classification

Arid

DOI	10.1016/j.geomorph.2018.11.003
	Semi-arid soils from a topolithosequence at James Ross Island, Weddell Sea region, Antarctica: Chemistry, mineralogy, genesis and classification
	Daher, Mayara; Schaefer, Carlos E. G. R.; Fernandes Filho, Elpidio Inacio; Francelino, Marcio Rocha; Senra, Eduardo Osorio
通讯作者	Daher, Mayara
来源期刊	GEOMORPHOLOGY
ISSN	0169-555X
EISSN	1872-695X
出版年	2019
卷号	327 页码:351-364
英文摘要	Climate and parent material have a significant impact on the development of Antarctic soils, and areas dominated by basaltic-andesitic volcanic rocks, sedimentary rocks, and metamorphic rocks have been widely studied. James Ross Island, located in the semi-arid transition between East Antarctic Peninsula/Weddell Sea sector, receives both continental and maritime climatic influences, resulting in distinct, transitional soil formation process. In Antarctica, there is little research on semi-arid soils formed on volcano-sedimentary rocks, as well as their pedogenetic processes. In this study, a topolithosequence of volcanic and sedimentary rocks in this semi-arid transitional climate was investigated. Nine profiles, three on marine terraces, four on sedimentary rocks, and two on volcanic rocks were described, sampled, and analyzed for morphological, physical, chemical, and mineralogical properties. Soils are predominantly Gelisols/Cryosols and present cryoturbation features despite the current dry climate. Vegetation is scarce and nesting birds are absent, so that most soils can be characterized as ahumic. All profiles have a skeletic character, with a high percentage of coarse materials. The soil pH varied from neutral to alkaline and the potential acidity values were null. The mineralogy of the clay fraction presented kaolinite, which was likely inherited from warmer and wetter paleoclimatic conditions during sedimentation. The soils have intergrade properties between maritime and continental Antarctic, such as cryoturbation and redoximorphism, side-by-side with desert pavements and ahumic character. Soil properties were more sensitive to the variations in parent material than to the topographic position in the landscape. (C) 2018 Elsevier B.V. All rights reserved.
英文关键词	Cryosols Periglacial soils Pedogenesis Magnetite
类型	Article
语种	英语
国家	Brazil
开放获取类型	Green Published
收录类别	SCI-E
WOS记录号	WOS:000456491600024
WOS关键词	SOUTH-SHETLAND ISLANDS ; MAGNETIC-SUSCEPTIBILITY ; MARITIME ANTARCTICA ; ORNITHOGENIC SOILS ; DEVELOPMENT RATES ; DRY VALLEY ; PENINSULA ; CRYOSOLS ; PERMAFROST ; MOUNTAINS
WOS类目	Geography, Physical ; Geosciences, Multidisciplinary
WOS研究方向	Physical Geography ; Geology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/216005
作者单位	Univ Fed Vicosa, Dept Solos, Ave PH Rolfs S-N, Vicosa, MG, Brazil
推荐引用方式 GB/T 7714	Daher, Mayara,Schaefer, Carlos E. G. R.,Fernandes Filho, Elpidio Inacio,et al. Semi-arid soils from a topolithosequence at James Ross Island, Weddell Sea region, Antarctica: Chemistry, mineralogy, genesis and classification[J],2019,327:351-364.
APA	Daher, Mayara,Schaefer, Carlos E. G. R.,Fernandes Filho, Elpidio Inacio,Francelino, Marcio Rocha,&Senra, Eduardo Osorio.(2019).Semi-arid soils from a topolithosequence at James Ross Island, Weddell Sea region, Antarctica: Chemistry, mineralogy, genesis and classification.GEOMORPHOLOGY,327,351-364.
MLA	Daher, Mayara,et al."Semi-arid soils from a topolithosequence at James Ross Island, Weddell Sea region, Antarctica: Chemistry, mineralogy, genesis and classification".GEOMORPHOLOGY 327(2019):351-364.