Deformation bands and their influence on fluid flow

Fossen, Haakon; Bale, Arthur

doi:10.1306/07300706146

Cited by 152 publications

(119 citation statements)

References 45 publications

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“…The type of deformation band most commonly reported in the literature show shear-induced grain crushing and compaction in a 1-2 mm thick zone in the sandstone with up to a few cm of shear offset (e.g., Aydin and Johnson, 1978;Underhill and Woodcock, 1987;Antonellini and Aydin, 1994;Davis, 1999). Such bands are referred to as compactional shear bands (Fossen et al, 2007) or, combining their textural and kinematic characteristics, cataclastic compactional shear bands (CSBs). In addition, non-cataclastic bands with predominantly shear offsets are very common in the extensional regime, particularly where the burial depth at the time of deformation was low (<1 km) (Fisher and Knipe, 2001;Hesthammer and Fossen, 2001).…”

Section: Introductionmentioning

confidence: 99%

Contractional deformation of porous sandstone: Insights from the Aztec Sandstone, SE Nevada, USA

Fossen

Zuluaga

Ballas

et al. 2015

Journal of Structural Geology

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International audienceContractional deformation of highly porous sandstones is poorly explored, as compared to extensional deformation of such sedimentary rocks. In this work we explore the highly porous Aztec Sandstone in the footwall to the Muddy Mountain thrust in SE Nevada, which contains several types of deformation bands in the Buffington tectonic window: 1) Distributed centimeter-thick shear-enhanced compaction bands (SECBs) and 2) rare pure compaction bands (PCBs) in the most porous parts of the sandstone, cut by 3) thin cataclastic shear-dominated bands (CSBs) with local slip surfaces. Geometric and kinematic analysis of the SECBs, the PCBs and most of the CSBs shows that they formed during ∼E–W (∼100) shortening, consistent with thrusting related to the Cretaceous to early Paleogene Sevier orogeny of the North American Cordilleran thrust system. Based on stress path modeling, we suggest that the compactional bands (PCBs and SECBs) formed during contraction at relatively shallow burial depths, before or at early stages of emplacement of the Muddy Mountains thrust sheet. The younger cataclastic shear bands (CSBs, category 3), also related to E–W Sevier thrusting, are thinner and show larger shear offsets and thus more intense cataclasis, consistent with the initiation of cataclastic shear bands in somewhat less porous materials. Observations made in this work support earlier suggestions that contraction lead to more distributed band populations than what is commonly found in the extensional regime, and that shear-enhanced compaction bands are widespread only where porosity (and permeability) is high

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Section: Introductionmentioning

confidence: 99%

Contractional deformation of porous sandstone: Insights from the Aztec Sandstone, SE Nevada, USA

Fossen

Zuluaga

Ballas

et al. 2015

Journal of Structural Geology

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“…12, No. 1; mineralogy according to Folk andDott classifications (Folk, 1980 andDott, 1964) provides information that the formation under this study covers sublitharenite followed by litharenite, quartzarenite, subarkose, lithic greywacke, and feldspathic litharenite.…”

Section: Data and Integrated Thin Section Petrography And Sem Descripmentioning

confidence: 98%

Connecting Microscopic Geological Features to Pore Geometry and Pore Structure: Case Study - Sandstone Reservoir of Balikpapan Formation, Kutai Basin

Musu¹,

Permadi²,

Widarsono³

2017

MAS

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Understanding geological features with engineering aspect has been done by previous studies and remains attractive by both geologists and engineers. This study employed data of a total of one hundred and seventy-nine (179) sandstone samples obtained from the Middle Miocene to Late Miocene Balikpapan Formation in Kutai Basin, Indonesia. The data includes thin section porosity, scanning electron microscope (SEM), x-ray diffraction (XRD), and capillary pressure (Pc). All samples are mainly dominated by quartz with additional rock fragment and feldspar, and additional component such as plagioclase, heavy minerals, occasional carbonaceous materials, micas and opaque minerals. Detrital clays, pseudomatrix and laminated clays occurred locally in minor quantity. Porosity ranges from 6 to 28.8.9%, whereas permeability ranging from 0.02 and 4,718 mD. This study investigates the relationship of microscopic geological features with pore geometry and pore structures. Kozeny equation and Leverette's J-Function are implemented to characterize the pore geometry and structure in correlation with microscopic geologic features. The main findings of the study are that: i) combination of quartz content, texture, clay content, and the diagenetic history of quartz cementation strongly relates to both pore geometry and structure of the sandstone samples, ii) the content of cements does not show a systematic effect on either pore geometry or pore structure, and iii) in general, for all the sandstone samples employed here, the higher quartz and lower clay contents tend to give both a larger pore geometry and lower pore structure in terms of pore tortuosity.

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“…Deformation bands are millimeter-thick tabular zones accommodating millimeter-to centimeterscale slippage in rock units (Fossen and Bale, 2007;Wilson et al, 2003). Slippage is accomplished by grain boundary sliding, grain fragmentation, and porosity reduction.…”

Section: Damage Zonesmentioning

confidence: 99%

Observations on Faults and Associated Permeability Structures in Hydrogeologic Units at the Nevada Test Site

Prothro¹,

Drellack²,

Haugstad³

et al. 2009

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Observational data on Nevada Test Site (NTS) faults were gathered from a variety of sources, including surface and tunnel exposures, core samples, geophysical logs, and down-hole cameras.These data show that NTS fault characteristics and fault zone permeability structures are similar to those of faults studied in other regions. Faults at the NTS form complex and heterogeneous fault zones with flow properties that vary in both space and time. Flow property variability within fault zones can be broken down into four major components that allow for the development of a simplified, first approximation model of NTS fault zones. This conceptual model can be used as a general guide during development and evaluation of groundwater flow and contaminate transport models at the NTS.iv This page intentionally left blank.

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Deformation bands and their influence on fluid flow

Cited by 152 publications

References 45 publications

Contractional deformation of porous sandstone: Insights from the Aztec Sandstone, SE Nevada, USA

Contractional deformation of porous sandstone: Insights from the Aztec Sandstone, SE Nevada, USA

Connecting Microscopic Geological Features to Pore Geometry and Pore Structure: Case Study - Sandstone Reservoir of Balikpapan Formation, Kutai Basin

Observations on Faults and Associated Permeability Structures in Hydrogeologic Units at the Nevada Test Site

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