Arid
DOI10.1002/esp.1618
Weathering of granite in Antarctica: I. Light penetration into rock and implications for rock weathering and endolithic communities
Hall, Kevin1; Guglielmin, Mauro2; Strini, Andrea3
通讯作者Hall, Kevin
来源期刊EARTH SURFACE PROCESSES AND LANDFORMS
ISSN0197-9337
出版年2008
卷号33期号:2页码:295-307
英文摘要

Where rocks are composed of translucent minerals, light penetrates the rock and, in so doing, impacts on the thermal conditions. Where minerals are not translucent all the heat transformation must be at the rock surface, and steep thermal gradients can occur. Where light does penetrate, a component of the incoming radiation is transformed to heat at differing depths within the rock, thereby decreasing the thermal gradient. Equally, light transmissive minerals facilitate endolithic communities, which can also play a role in rock weathering. The attribute of light transmission within rock and the impact this has on the resulting thermal conditions has not been considered within rock weathering studies. An attempt was made to monitor the amount of light penetrating the outer 2 mm of coarse granite under Antarctic summer conditions and to evaluate the thermal impact of this. It was found that the amount of light penetration at this site exceeded modeled or postulated values from biological studies and that it could significantly impact the thermal conditions within the outer shell of the rock. Although the resulting data highlighted a number of flaws in the experimental procedure, sufficient information was generated to provide the first assessment of the range of thermal responses due to light transmissive minerals in rock. Copyright (C) 2007 John Wiley & Sons, Ltd.


英文关键词light penetration weathering endolithic organisms granite Antarctica
类型Article
语种英语
国家South Africa ; Italy
收录类别SCI-E
WOS记录号WOS:000253695100009
WOS关键词CRYPTOENDOLITHIC MICROBIAL ENVIRONMENT ; NORTHERN VICTORIA LAND ; THERMAL-STRESS ; ROSS DESERT ; TEMPERATURE ; FATIGUE ; MODELS
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/2XILL650/157009
作者单位1.Univ Pretoria, Dept Geog Geoinformat & Meteorol, ZA-0002 Pretoria, South Africa;
2.Insubria Univ, Fac Sci, Varese, Italy;
3.Univ Milan, Dipartimento Sci Terra, I-20133 Milan, Italy
推荐引用方式
GB/T 7714
Hall, Kevin,Guglielmin, Mauro,Strini, Andrea. Weathering of granite in Antarctica: I. Light penetration into rock and implications for rock weathering and endolithic communities[J],2008,33(2):295-307.
APA Hall, Kevin,Guglielmin, Mauro,&Strini, Andrea.(2008).Weathering of granite in Antarctica: I. Light penetration into rock and implications for rock weathering and endolithic communities.EARTH SURFACE PROCESSES AND LANDFORMS,33(2),295-307.
MLA Hall, Kevin,et al."Weathering of granite in Antarctica: I. Light penetration into rock and implications for rock weathering and endolithic communities".EARTH SURFACE PROCESSES AND LANDFORMS 33.2(2008):295-307.
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