DOI: 10.1007/s00531-015-1153-7
Scopus记录号: 2-s2.0-84931571254
论文题名: Variscan granitoids related to shear zones and faults: examples from the Central Sudetes (Bohemian Massif) and the Middle Odra Fault Zone
作者: Oberc-Dziedzic T. ; Kryza R. ; Pin C.
刊名: International Journal of Earth Sciences
ISSN: 14373254
出版年: 2015
卷: 104, 期: 5 起始页码: 1139
结束页码: 1166
语种: 英语
英文关键词: Granitoid intrusions
; Shear zones
; The Sudetes
; Variscan magmatism
Scopus关键词: fault zone
; granitoid
; Hercynian orogeny
; igneous intrusion
; magmatism
; shear zone
; tectonics
; Bohemian Massif
; Sudetes
英文摘要: The granitoid intrusions of the Central Sudetes (CS) and of the Middle Odra Fault Zone (MOFZ), NE part of the Bohemian Massif, are both spatially and temporally related to large-scale shear zones and faults (including possible terrane boundaries) that provided effective channels for melt migration. Summarizing common features of the CS and MOFZ granitoids, we have delineated a set of characteristics of the fault-related and shear zone-related granitoids: (1) they are mainly generated by partial melting of crustal sources, with variable contribution (or no contribution) of mantle materials; (2) the sheet-like, steeply inclined, narrow and rather small granitoid intrusions are emplaced within shear zones at mid-crustal level (c. 20 km depth), whereas the larger, flat-lying plutons intrude into the upper crust, outside or above these shear zones; (3) the magmatic foliation and lineation in granitoids of the deeper, sheet-like intrusions are concordant with those in the surrounding metamorphic rocks, suggesting that the solidification of granitoids was coeval with the deformation in the shear zones; instead, the magmatic foliation in the shallower and larger dome-like plutons reflects magma flow; (4) ductile, transcurrent movements along the shear zones postdate medium-pressure regional metamorphism and are accompanied by an increase in the local thermal gradient, as documented by the crystallization of cordierite, andalusite and sillimanite; (5) the increase in the thermal gradient precedes the emplacement of granitoids and their concomitant thermal influence on the country rocks. The granitoids related to the final stages of tectonothermal activity of the shear zones are good-time markers of their evolutionary path. © 2015, The Author(s). URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84931571254&doi=10.1007%2fs00531-015-1153-7&partnerID=40&md5=3767efb4dedba1442397dddae07d627d
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/70290
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: Institute of Geological Sciences, University of Wrocław, Plac M. Borna 9, Wrocław, Poland; Département de Géologie, UMR 6524 CNRS, Université Blaise Pascal, 5 rue Kessler, Clermont-Ferrand, France
Recommended Citation:
Oberc-Dziedzic T.,Kryza R.,Pin C.. Variscan granitoids related to shear zones and faults: examples from the Central Sudetes (Bohemian Massif) and the Middle Odra Fault Zone[J]. International Journal of Earth Sciences,2015-01-01,104(5)