火山作用
深成主义
地质学
盆岭省
裂谷
地球化学
地球科学
航程(航空)
岩浆
构造盆地
古生物学
火山
构造学
复合材料
材料科学
作者
Phillip B. Gans,Wendy A. Bohrson
出处
期刊:Science
[American Association for the Advancement of Science]
日期:1998-01-02
卷期号:279 (5347): 66-68
被引量:91
标识
DOI:10.1126/science.279.5347.66
摘要
Continental extension and volcanism are generally thought to be complementary. Stratigraphic and structural data from some highly extended parts of the Basin and Range province reveal instead that rapid extension appears to have suppressed volcanism. This relation may reflect enhanced crystallization of midcrustal magmas during extension resulting from exsolution of magmatic volatiles, increased interaction of magmas with meteoric water, and dispersal of magma into smaller bodies. Some rift environments may thus be characterized by voluminous synextensional plutonism with little or no concomitant volcanism.
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