DOI: 10.1306/01031110118
Scopus记录号: 2-s2.0-80052010523
论文题名: Diagenetic control of deformation mechanisms in deformation bands in a carbonate grainstone
作者: Rath A. ; Exner U. ; Tschegg C. ; Grasemann B. ; Laner R. ; Draganits E.
刊名: AAPG Bulletin
ISSN: 0149-1836
EISSN: 1558-9566
出版年: 2011
发表日期: 2011
卷: 95, 期: 8 起始页码: 1369
结束页码: 1381
语种: 英语
Scopus关键词: Austria
; Carbonate rock
; Cataclastic deformation
; Chemical compositions
; Deformation band
; Deformation mechanism
; Diagenetics
; Grain rotation
; Host rocks
; Hungary
; Hydrocarbon reservoir
; Micro-structural
; Microcomputed tomography
; Petrophysical
; Porosimetry
; Pressure decay
; Single band
; Three orders of magnitude
; Anoxic sediments
; Carbonation
; Cementing (shafts)
; Cements
; Chemical analysis
; Computerized tomography
; Electron probe microanalysis
; Groundwater
; Helium
; Hydrocarbons
; Porosity
; Rocks
; Rotation
; Deformation
; carbonate
; cathodoluminescence
; cementation
; deformation mechanism
; diagenesis
; fracture
; grainstone
; groundwater
; hydrocarbon
; limestone
; magnitude
; microstructure
; observational method
; permeability
; porosity
; reservoir
; tomography
; Austria
; Hungary
Scopus学科分类: Energy
; Earth and Planetary Sciences
英文摘要: Deformation bands are commonly found in porous silicilastic sediments, where strain is accommodated by rotation, translation, and fracturing of individual grains instead of by the formation of a sharp discontinuity. We investigated deformation bands in a high-porosity carbonate rock from the Eisenstadt-Sopron Basin, on the border between Austria and Hungary, using a combination of microstructural and petrophysical methods. We used cathodoluminescence and electron microprobe analyses to assess the distribution and chemical composition of the carbonate particles, deformation bands, and cements. The earliest deformation bands formed before the cementation of the limestone, mainly by rotation of elongated bioclasts to an orientation parallel to the deformation bands. Further movement along the bands after the generation of blocky cement around the bioclasts resulted in cataclastic deformation of both allochems and cement. Moreover, we documented a reduction of porosity from 22 to 35% in the host rock to 2 to 5% in the deformation bands by microcomputed tomography and conventional helium porosimetry. Permeability is reduced as much as three orders of magnitude relative to the host rock, as documented by pressure decay probe permeametry. The observations indicate a change in physical properties of the rock caused by cementation during the generation of deformation bands, which results in a change of deformation mechanism from grain rotation and compaction to cataclastic deformation along a single band. The reduction of porosity and permeability; which is even stronger than observed in most silicilastic rocks, affects the migration of fluids in groundwater or hydrocarbon reservoirs. Copyright © 2011. The American Association of Petroleum Geologists. All rights reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-80052010523&doi=10.1306%2f01031110118&partnerID=40&md5=09e4c03929b0491de0df81947b53c214
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/13405
Appears in Collections: 过去全球变化的重建 影响、适应和脆弱性 科学计划与规划 气候变化与战略 全球变化的国际研究计划 气候减缓与适应 气候变化事实与影响
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Recommended Citation:
Rath A.,Exner U.,Tschegg C.,et al. Diagenetic control of deformation mechanisms in deformation bands in a carbonate grainstone[J]. AAPG Bulletin,2011-01-01,95(8)