Waulsortian-like mounds of the Mississippian Pekisko Formation, Northwestern Alberta: Petrographic and chemical attributes

Al‐Aasm, Ihsan S.; Vernon, Matthew Ross.

doi:10.1016/j.marpetgeo.2007.04.003

Cited by 13 publications

(2 citation statements)

References 26 publications

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“…It is different from replacement dolomites in origin (Warren, 2000;Machel, 2004), being controlled by fluid characteristics (Jones, 2004) and/or tectonic settings (Davies and Smith Jr., 2006;Katz et al, 2006;Luczaj et al, 2006). Its presence may suggest activities of high temperature (100-180 C) and saline fluid (12-25 eq.wt.% NaCl) (Al-Aasm et al, 2000Al-Aasm and Vernon, 2007;Davies and Smith Jr., 2006), which is often related to fault-related fluid flow (e.g., Duggan et al, 2001;Lavoie and Morin, 2004). Thus, commonly as product of fluid-rock interaction, the saddle dolomites have important implications for understanding fluid activities.…”

Section: Introductionmentioning

confidence: 98%

Formation of saddle dolomites in Upper Cambrian carbonates, western Tarim Basin (northwest China): Implications for fault-related fluid flow

Zhang

Qian

et al. 2009

Marine and Petroleum Geology

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Section: Introductionmentioning

confidence: 98%

Formation of saddle dolomites in Upper Cambrian carbonates, western Tarim Basin (northwest China): Implications for fault-related fluid flow

Zhang

Qian

et al. 2009

Marine and Petroleum Geology

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“…In fact, reservoirs where natural fractures significantly impact fluid flow are widespread (Nelson, ). Based on the brittle nature of carbonate rocks, multiple fractures were developed during tectonic activity (Jones, ; Lavoie et al ., ; Tarasewicz et al ., ; Katz et al ., ; Al‐Aasm and Vernon, ; Zhang et al ., ). Therefore, exact characterization of the development of tectonic fractures in lower Ordovician limestone in the Tabei Uplift and the study of its relationship with fluid filling are important to guide further oil and gas exploration and development.…”

Section: Introductionmentioning

confidence: 99%

Tectonic fracture and its significance in hydrocarbon migration and accumulation: a case study on middle and lower Ordovician in Tabei Uplift of Tarim Basin, NW China

Cai

Lü

2015

Geological Journal

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Middle and lower Ordovician carbonate rock in the Tabei Uplift of the Tarim Basin forms important fractured reservoir beds. Core and log data indicate that tectonic fractures, as the main fractures in the Tabei Uplift, could be mainly classified into two types: oblique fractures and approximately vertical fractures. The fractures are mainly NNW-trending and NNE-trending, coincident with the large faults nearby. Fracture abundance was also controlled by lithology, and faults nearby played a significant role. Cores, thin sections and tests show that these carbonate rocks have as much as 2.5% fracture porosity and as much as 150 md fracture permeability. Based on the intersection of fractures in cores, together with fluid inclusion temperature data, and the timing of faulting from seismic profiles, tectonic fractures were considered to be mainly formed in three periods: the late Silurian when the first-stage oblique fractures were formed, the late Permian when approximately vertical fractures were formed, and the late Tertiary when the second-stage oblique fractures were formed. Lower Cambrian source rocks started to enter the stage of generous hydrocarbon generation and expulsion in the Silurian. Ordovician source rocks started to enter the stage of generous hydrocarbon generation and expulsion in the Permian and enter the over-mature stage in the late Tertiary when light oil was generated. Timing of tectonic fractures formation and burial history analysis suggest that fractures formation might coincide with oil accumulation when fractures provided the pathway and storage space for the low permeability and low porosity reservoir beds caused by previous compaction and cementation. Considering the presence of a large amount of fracture-developed dolomite in the deeper Ordovician Penglaiba Formation, the undrilled Penglaiba Formation should be paid more attention.

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Primary dolostone related to the Cretaceous lacustrine hydrothermal sedimentation in Qingxi sag, Jiuquan Basin on the northern Tibetan Plateau

Wen

Zheng

Qing

et al. 2013

Sci. China Earth Sci.

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Waulsortian-like mounds of the Mississippian Pekisko Formation, Northwestern Alberta: Petrographic and chemical attributes

Cited by 13 publications

References 26 publications

Formation of saddle dolomites in Upper Cambrian carbonates, western Tarim Basin (northwest China): Implications for fault-related fluid flow

Formation of saddle dolomites in Upper Cambrian carbonates, western Tarim Basin (northwest China): Implications for fault-related fluid flow

Tectonic fracture and its significance in hydrocarbon migration and accumulation: a case study on middle and lower Ordovician in Tabei Uplift of Tarim Basin, NW China

Primary dolostone related to the Cretaceous lacustrine hydrothermal sedimentation in Qingxi sag, Jiuquan Basin on the northern Tibetan Plateau

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