Displacement transfer at thrust terminations: the Saltville thrust and Sinking Creek anticline, Virginia, U.S.A.

Couzens, Brent A.; Dunne, William M.

doi:10.1016/0191-8141(94)90145-7

Cited by 18 publications

(4 citation statements)

References 30 publications

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“…In order to evaluate how closely the paleoseismite localities shown in Figure 23 coincide with the location of the active Giles County seismicity, they must be palinspastically restored to their Late Mississippian position. It is not certain how much Alleghanian northwestward transport these rocks have undergone; estimates range as high as 25 km (Couzens and Dunne, 1994). Figure 23 shows a more conservative estimate of 10 km of northwestward transport by the end of the Alleghanian collision.…”

Section: Origin Of Late Mississippian Seismicitymentioning

confidence: 99%

Late Mississipian paleoseismites from southeastern West Virginia and southwestern Virginia

Stewart¹,

Dennison²,

Bartholomew

2002

Ancient Seismites

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Section: Origin Of Late Mississippian Seismicitymentioning

confidence: 99%

Late Mississipian paleoseismites from southeastern West Virginia and southwestern Virginia

Stewart¹,

Dennison²,

Bartholomew

2002

Ancient Seismites

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“…McQuillan, 1974; Srivastava & Engelder, 1990; Fischer, Woodward & Mitchell, 1992; Erslev & Mayborn, 1997; Thorbjornsen & Dunne, 1997) or to quantitatively estimated curvature of strata (Lisle, 2000; Hennings, 2000; Bergbauer & Pollard, 2004). Alternatively, recent works have instead attempted to relate orientation and intensity of macrostructures (such as fractures and cleavages) and microstructures to the progressive deformation of sedimentary strata during folding (Sanderson, 1982; Couzens & Dunne, 1994; Anastasio et al . 1997; Storti & Salvini, 2001; Tavani et al .…”

Section: Introduction and Aim Of The Studymentioning

confidence: 99%

Fracture patterns in the Zagros Simply Folded Belt (Fars, Iran): constraints on early collisional tectonic history and role of basement faults

2011

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Pre-/early folding fracture patterns were recognized in several anticlines from three structural domains in the Simply Folded Belt of the Fars arc. These fracture sets were characterized in terms of opening mode and relative chronology and used to reconstruct the main compressional trends related to the early Zagros collisional history. The palaeostress reconstructions based on these fracture sets were further refined by combination with newly collected or already available fault-slip and calcite twin data. As an alternative to previous models of rigid block rotations or regional stress rotation, we propose that the complex pattern of pre-folding fractures and the contrasting palaeostress orientations through time in the different domains investigated are related to the presence of basement faults with N–S and WNW trends, above which basement and cover were variably coupled during stress build-up and early deformation of the Arabian margin. Beyond regional implications, this study draws attention to the need to carefully consider pre-existing fractures, possibly unrelated to folding, to build more realistic conceptual fold–fracture models.

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“…Curvature is still used frequently as a tool to define fractures direction and intensity [ Hennings , 2000; Bergbauer and Pollard , 2004]. However, in the recent years, due to the development of kinematic models of folding, several attempts have been made to relate fracturing to the kinematics of folds instead of looking simply at the final shape of the folds in accordance with the observations that fracturing records a progressive deformation during folding [ Allmendinger , 1982; Couzens and Dunne , 1994; Fisher and Anastasio , 1994; Anastasio et al , 1997; Storti and Salvini , 2001; Tavani et al , 2006].…”

Section: Introductionmentioning

confidence: 99%

Evidence for pre‐folding vein development in the Oligo‐Miocene Asmari Formation in the Central Zagros Fold Belt, Iran

Ahmadhadi

Daniel

Azzizadeh³

et al. 2008

Tectonics

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[1] In order to understand the interplay between vein development and folding in the carbonates of the Oligo-Miocene Asmari Formation (one of the main hydrocarbon reservoir rocks) in Iran, several anticlines have been investigated in the central part of the Zagros folded belt. Combining observations of relative chronology between veins based on calcite-filling phases and crosscutting/abutting relationships, as well as aerial/satellite image interpretation on several anticlines allowed proposing a tectonic model highlighting the widespread development of veins and other extensional micro/meso-structures in the Central Zagros folded belt. Our data suggest that most of the veins affecting the Asmari formation predated the main Miocene-Pliocene folding episode. An early regional vein set striking N50°marked the onset of collisional stress build-up in the region. Then, N150°a nd N20°trending vein sets were initiated in response to local extension caused by large-scale flexure/drape folds above N-S and N140°basement faults reactivated under the regional NE compression. At the onset and during Miocene-Pliocene folding of the sedimentary cover, the early formed veins were reactivated (reopened and/or sheared) while duplexes, low angle reverse faults and thrusts formed. Beyond regional implications, this study puts emphasis on the need of carefully considering regional/local vein development predating folding as well as influence of underlying basement faults in models of folded-fractured reservoirs in fold-thrust belts.

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Displacement transfer at thrust terminations: the Saltville thrust and Sinking Creek anticline, Virginia, U.S.A.

Cited by 18 publications

References 30 publications

Late Mississipian paleoseismites from southeastern West Virginia and southwestern Virginia

Late Mississipian paleoseismites from southeastern West Virginia and southwestern Virginia

Fracture patterns in the Zagros Simply Folded Belt (Fars, Iran): constraints on early collisional tectonic history and role of basement faults

Evidence for pre‐folding vein development in the Oligo‐Miocene Asmari Formation in the Central Zagros Fold Belt, Iran

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