DOI: 10.1007/s00531-013-0930-4
论文题名: The Waqf as Suwwan crater, Eastern Desert of Jordan: Aspects of the deep structure of an oblique impact from reflection seismic and gravity data
作者: Heinrichs T. ; Salameh E. ; Khouri H.
刊名: International Journal of Earth Sciences
出版年: 2014
卷: 103, 期: 1 起始页码: 233
结束页码: 252
语种: 英语
英文关键词: Gravity model
; Jordan Uplift
; Oblique impact
; Radial transpressive ridge
; Rim uplift
; Wadi Sirhan Basin
; Waqf as Suwwan impact
Scopus关键词: crater
; exhumation
; fault zone
; gravimetry
; impact structure
; normal fault
; seismic reflection
; syncline
; transpression
; uplift
; Jordan
; Maan
; Waqf as Suwwan Crater
英文摘要: The deeply eroded Waqf as Suwwan ring structure was recently discovered to be a large impact, the first identified in the near east. Large-scale reflection seismic structure shows the impact situated high on the northeastern flank of the Jordan Uplift sloping into Wadi Sirhan Basin. If exhumation is linked to the Arabia-Eurasia collision, a likely time window for the impact event may be latest Eocene to Late Oligocene. Impact into a shallow sea seems an optional scenario. Old reflection seismic lines offer limited insight into the deep structure of the rim and part of the central uplift of the complex crater. An important structural clue is provided by a well-resolved seismic horizon of a yet tentative correlation with a Paleozoic black shale. The central gravity high is compatible with a mass surplus by the uplift of denser Paleozoic basement below the central uplift. The gravity model further indicates a ring of dense Paleozoic sediments rising from below into the ring syncline. Seismics show presumably radial synclines in the central uplift which are interpreted by centripetal constrictional flow during crater collapse. Beneath the final crater's outer boundary, a shallow-dip normal fault zone, subtle seismic structure in uncollapsed footwall segments reveal an asymmetry of strain. The asymmetry is attributed to the cratering flow by an oblique impact directed toward NE. The finding provides independent support to an earlier suggestion of impact obliquity based on vergency of folds exposed on the central uplift. © 2013 Springer-Verlag Berlin Heidelberg. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84893780101&doi=10.1007%2fs00531-013-0930-4&partnerID=40&md5=990813a7111fb3442099d961b1d356d9
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/70393
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: Applied Geology, Geoscience Center, Georg-August University, 37077 Goettingen, Germany; University of Jordan, Amman, 11942, Jordan
Recommended Citation:
Heinrichs T.,Salameh E.,Khouri H.. The Waqf as Suwwan crater, Eastern Desert of Jordan: Aspects of the deep structure of an oblique impact from reflection seismic and gravity data[J]. International Journal of Earth Sciences,2014-01-01,103(1)