DOI: 10.1007/s00531-013-0979-0
Scopus记录号: 2-s2.0-84896545422
论文题名: Fractures and faults in volcanic rocks (Campi Flegrei, southern Italy): Insight into volcano-tectonic processes
作者: Vitale S. ; Isaia R.
刊名: International Journal of Earth Sciences
ISSN: 14373254
出版年: 2014
卷: 103, 期: 3 起始页码: 801
结束页码: 819
语种: 英语
英文关键词: Caldera
; Campanian Ignimbrite
; Deformation
; Neapolitan Yellow Tuff
; Structural geology
; Volcanism
Scopus关键词: caldera
; deformation
; fault
; fracture
; ignimbrite
; lava dome
; normal fault
; structural geology
; tectonics
; tuff
; volcanic rock
; volcanism
; Campania [Italy]
; Campi Flegrei
; Greece
; Italy
; Laconia
; Napoli [Campania]
; Neapolis
; Peloponnisos
英文摘要: The present study was focused to analyze fractures and faults in the Campi Flegrei calderas presently hosting several volcanic edifices, such as lava domes, scoria, and tuff cones. A complex network of fractures and faults affects the volcanic rocks, mostly as planar with highly variable density. Frequently faults appearing as conjugate structures showing normal kinematics often associated with ductile deformation such as drag folds and deflexed layers, suggesting a syn-eruption deformation. However, the most of faults, mainly hosted along the caldera/crater rims, are very steep with dominant normal and secondary reverse movements. The fracture pattern indicates a slight prevalence of NE-SW and NW-SE directions, but N-S and E-W trends also occur. Fractures and faults found in rocks older than 15 ka (Neapolitan Yellow Tuff included), measured in western and eastern sectors of the study area, indicate a rotation of ca. 30° of the main directions among these two sectors. For the faults occurring along the caldera/crater rims, we suggest a kinematic evolution characterized by the reactivation of tensile fractures previously formed in response to both regional extension and locale resurgent dome. Finally, normal faults located in the central sector of caldera, between La Starza and Accademia localities, cutting the youngest volcanic deposits, indicate a constant NNE-SSW extension probably related to the caldera resurgence. © 2013 Springer-Verlag Berlin Heidelberg. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84896545422&doi=10.1007%2fs00531-013-0979-0&partnerID=40&md5=e8e5bd5c28b49383b3808b2a8895ea6c
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/70360
Appears in Collections: 影响、适应和脆弱性 气候减缓与适应
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作者单位: Dipartimento di Scienze della Terra, dell'Ambiente e delle Risorse (DiSTAR), Università di Napoli Federico II, Largo San Marcellino 10, 80138 Naples, Italy; Istituto Nazionale di Geofisica e Vulcanologia, Osservatorio Vesuviano, Via Diocleziano 328, 80124 Naples, Italy
Recommended Citation:
Vitale S.,Isaia R.. Fractures and faults in volcanic rocks (Campi Flegrei, southern Italy): Insight into volcano-tectonic processes[J]. International Journal of Earth Sciences,2014-01-01,103(3)