DOI: 10.1007/s00531-012-0808-x
Scopus记录号: 2-s2.0-84874019731
论文题名: Fault-controlled sedimentation in a progressively opening extensional basin: The Palaeoproterozoic Vargfors basin, Skellefte mining district, Sweden
作者: Bauer T.E. ; Skyttä P. ; Allen R.L. ; Weihed P.
刊名: International Journal of Earth Sciences
ISSN: 14373254
出版年: 2013
卷: 102, 期: 2 起始页码: 385
结束页码: 400
语种: 英语
英文关键词: Alluvial fan
; Basin inversion
; Conglomerates
; Facies analysis
; Palaeoproterozoic
; Skellefte district
Scopus关键词: alluvial fan
; conglomerate
; crustal shortening
; dip-slip fault
; displacement
; fault zone
; Proterozoic
; sedimentation
; subsidence
; Skelleftea
; Sweden
; Vasterbotten
英文摘要: The Vargfors basin in the central part of the Skellefte mining district is an inverted sedimentary basin within a Palaeoproterozoic (1. 89 Ga) marine volcanic arc. The fault-segmented basin formed from upper-crustal extension and subsequent compression, following a period of intense sub-marine volcanism and VMS ore formation. New detailed mapping reveals variations in stratigraphy attributed to syn-extensional sedimentation, as well as provenance of conglomerate clasts associated with tectonic activity at the transition from extension to compression. The onset of fan delta to alluvial fan sedimentation associated with basin subsidence indicates that significant dip-slip displacement accommodating rapid uplift of the intrusive complex and/or subsidence of the adjacent volcano-sedimentary domain took place along a major fault zone at the southern margin of the intrusive complex. Subsidence of the Jörn intrusive complex and/or its burial by sedimentary units caused a break in erosion of the intrusion and favoured the deposition of a tonalite clast-barren conglomerate. Clast compositions of conglomerates show that the syn-extensional deposits become younger in the south-eastern parts of the basin, indicating that opening of the basin progressed from north-west to south-east. Subsequent basin inversion, associated with the accretion to the Karelian margin, involved reverse activation of the normal faults and development of related upright synclines. Progressive crustal shortening caused the formation of break-back faults accompanied by mafic volcanic activity that particularly affected the southern contact of the Jörn intrusive complex and the northern contact of the Vargfors basin. © 2012 Springer-Verlag. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84874019731&doi=10.1007%2fs00531-012-0808-x&partnerID=40&md5=98c6e4e37e65078e3f6a860d79cfba6e
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/70573
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: Division of Geosciences and Environmental Engineering, Luleå University of Technology, 971 87 Luleå, Sweden; Boliden Mineral AB, 936 81 Boliden, Sweden
Recommended Citation:
Bauer T.E.,Skyttä P.,Allen R.L.,et al. Fault-controlled sedimentation in a progressively opening extensional basin: The Palaeoproterozoic Vargfors basin, Skellefte mining district, Sweden[J]. International Journal of Earth Sciences,2013-01-01,102(2)