DOI: 10.1016/j.epsl.2018.01.006
Scopus记录号: 2-s2.0-85042904903
论文题名: Etnean and Hyblean volcanism shifted away from the Malta Escarpment by crustal stresses
作者: Neri M. ; Rivalta E. ; Maccaferri F. ; Acocella V. ; Cirrincione R.
刊名: Earth and Planetary Science Letters
ISSN: 0012821X
出版年: 2018
卷: 486 起始页码: 15
结束页码: 22
语种: 英语
英文关键词: dike propagation
; Etna
; fault scarp
; Hyblean volcanism
; intraplate volcanism
; Malta Escarpment
Scopus关键词: Geology
; Mathematical models
; Dike propagation
; Etna
; Fault scarp
; Hyblean volcanism
; intraplate volcanism
; Malta Escarpment
; Hydraulic structures
英文摘要: A fraction of the volcanic activity occurs intraplate, challenging our models of melting and magma transfer to the Earth's surface. A prominent example is Mt. Etna, eastern Sicily, offset from the asthenospheric tear below the Malta Escarpment proposed as its melt source. The nearby Hyblean volcanism, to the south, and the overall northward migration of the eastern Sicilian volcanism are also unexplained. Here we simulate crustal magma pathways beneath eastern Sicily, accounting for regional stresses and decompression due to the increase in the depth of the Malta Escarpment. We find non-vertical magma pathways, with the competition of tectonic and loading stresses controlling the trajectories’ curvature and its change in time, causing the observed migration of volcanism. This suggests that the Hyblean and Etnean volcanism have been fed laterally from a melt pooling region below the Malta Escarpment. The case of eastern Sicily shows how the reconstruction of the evolution of magmatic provinces may require not only an assessment of the paleostresses, but also of the contribution of surface loads and their variations; at times, the latter may even prevail. Accounting for these competing stresses may help shed light on the distribution and wandering of intraplate volcanism © 2018 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/110033
Appears in Collections: 影响、适应和脆弱性 气候变化事实与影响
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作者单位: Istituto Nazionale di Geofisica e Vulcanologia, Sezione di Catania, Osservatorio Etneo, Piazza Roma 2, Catania, 95125, Italy; GFZ German Research Center for Geosciences, Potsdam, Germany; Dipartimento Scienze Roma Tre, Roma, Italy; Dipartimento di Scienze Biologiche, Geologiche e Ambientali, Università di Catania C.so Italia 57, Catania, 95129, Italy
Recommended Citation:
Neri M.,Rivalta E.,Maccaferri F.,et al. Etnean and Hyblean volcanism shifted away from the Malta Escarpment by crustal stresses[J]. Earth and Planetary Science Letters,2018-01-01,486