Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1038/NGEO2982 |
A reverse energy cascade for crustal magma transport | |
Karlstrom, Leif1; Paterson, Scott R.2; Jellinek, A. Mark3 | |
2017-08-01 | |
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:8 |
文章类型 | Article |
语种 | 英语 |
国家 | USA; Canada |
英文摘要 | Direct constraints on the ascent, storage and eruption of mantle melts come primarily from exhumed, long-frozen intrusions. These structures, relics of a dynamic magma transport network, encode how Earth's crust grows and differentiates over time. Furthermore, they connect mantle melting to an evolving distribution of surface volcanism. Disentangling magma transport processes from the plutonic record is consequently a seminal but unsolved problem. Here we use field data analyses, scaling theory and numerical simulations to show that the size distribution of intrusions preserved as plutonic complexes in the North American Cordillera suggests a transition in the mechanical response of crustal rocks to protracted episodes of magmatism. Intrusion sizes larger than about 100m follow a power-law scaling expected if energy delivered from the mantle to open very thin dykes and sills is transferred to intrusions of increasing size. Merging, assimilation and mixing of small intrusions into larger ones occurs until irreversible deformation and solidification dissipate available energy. Mantle magma supply over tens to hundreds of thousands of years will trigger this regime, a type of reverse energy cascade, depending on the influx rate and efficiency of crustal heating by intrusions. Identifying regimes of magma transport provides a framework for inferring subsurface magmatic processes from surface patterns of volcanism, information preservation in the plutonic record, and related effects including climate. |
领域 | 地球科学 ; 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000406641100017 |
WOS关键词 | CENTRAL SIERRA-NEVADA ; TUOLUMNE BATHOLITH ; NORTH CASCADES ; DECCAN TRAPS ; EMPLACEMENT ; PLUTON ; CHAMBER ; DIKES ; RATES ; CONSTRUCTION |
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/35129 |
专题 | 地球科学 气候变化 |
作者单位 | 1.Univ Oregon, Dept Earth Sci, Eugene, OR 97403 USA; 2.Univ Southern Calif, Dept Earth Sci, Los Angeles, CA 90089 USA; 3.Univ British Columbia, Dept Earth Ocean & Atmospher Sci, Vancouver, BC V6T 1Z4, Canada |
推荐引用方式 GB/T 7714 | Karlstrom, Leif,Paterson, Scott R.,Jellinek, A. Mark. A reverse energy cascade for crustal magma transport[J]. NATURE GEOSCIENCE,2017,10(8). |
APA | Karlstrom, Leif,Paterson, Scott R.,&Jellinek, A. Mark.(2017).A reverse energy cascade for crustal magma transport.NATURE GEOSCIENCE,10(8). |
MLA | Karlstrom, Leif,et al."A reverse energy cascade for crustal magma transport".NATURE GEOSCIENCE 10.8(2017). |
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