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DOI | 10.1038/NGEO2959 |
Lifetime and size of shallow magma bodies controlled by crustal-scale magmatism | |
Karakas, Ozge1; Degruyter, Wim2; Bachmann, Olivier1; Dufek, Josef3 | |
2017-06-01 | |
发表期刊 | NATURE GEOSCIENCE
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ISSN | 1752-0894 |
EISSN | 1752-0908 |
出版年 | 2017 |
卷号 | 10期号:6 |
文章类型 | Article |
语种 | 英语 |
国家 | Switzerland; Wales; USA |
英文摘要 | Magmatic processes on Earth govern the mass, energy and chemical transfer between the mantle, crust and atmosphere. To understand magma storage conditions in the crust that ultimately control volcanic activity and growth of continents, an evaluation of the mass and heat budget of the entire crustal column during magmatic episodes is essential. Here we use a numerical model to constrain the physical conditions under which both lower and upper crustal magma bodies form. We find that over long durations of intrusions (greater than 105 to 106 yr), extensive lower crustal mush zones develop, which modify the thermal budget of the upper crust and reduce the flux of magma required to sustain upper crustal magma reservoirs. Our results reconcile physical models of magma reservoir construction and field-based estimates of intrusion rates in numerous volcanic and plutonic localities. Young igneous provinces (less than a few hundred thousand years old) are unlikely to support large upper crustal reservoirs, whereas longer-lived systems (active for longer than 1 million years) can accumulate magma and build reservoirs capable of producing super-eruptions, even with intrusion rates smaller than 10(-3) to 10(-2) km(3) yr(-1). Hence, total duration of magmatism should be combined with the magma intrusion rates to assess the capability of volcanic systems to form the largest explosive eruptions on Earth. |
领域 | 地球科学 ; 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000402579200015 |
WOS关键词 | CONTINENTAL-CRUST ; SILICIC MAGMAS ; EARTHS CRUST ; HEAT-FLOW ; RESIDENCE TIMES ; SIERRA-NEVADA ; ARC MAGMATISM ; LONG VALLEY ; EVOLUTION ; GROWTH |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/35069 |
专题 | 地球科学 气候变化 |
作者单位 | 1.Swiss Fed Inst Technol, Inst Geochem & Petrol, Dept Earth Sci, Clausiusstr 25, CH-8092 Zurich, Switzerland; 2.Cardiff Univ, Sch Earth & Ocean Sci, Main Bldg,Pk Pl, Cardiff CF10 3AT, S Glam, Wales; 3.Georgia Inst Technol, Sch Earth & Atmospher Sci, 311 Ferst Dr, Atlanta, GA 30332 USA |
推荐引用方式 GB/T 7714 | Karakas, Ozge,Degruyter, Wim,Bachmann, Olivier,et al. Lifetime and size of shallow magma bodies controlled by crustal-scale magmatism[J]. NATURE GEOSCIENCE,2017,10(6). |
APA | Karakas, Ozge,Degruyter, Wim,Bachmann, Olivier,&Dufek, Josef.(2017).Lifetime and size of shallow magma bodies controlled by crustal-scale magmatism.NATURE GEOSCIENCE,10(6). |
MLA | Karakas, Ozge,et al."Lifetime and size of shallow magma bodies controlled by crustal-scale magmatism".NATURE GEOSCIENCE 10.6(2017). |
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