scholarly journals Precambrian Evolution and the Deformation Style in the Great Boundary Fault Zone around Chittorgarh, Rajasthan

2021 ◽  
Vol 65 (01) ◽  
pp. 10-16
Author(s):  
Jamuna Biswa ◽  
K. K. Sharma ◽  
Ganga Biswa
Keyword(s):  
2017 ◽  
Vol 14 (7) ◽  
pp. 1445-1453 ◽  
Author(s):  
Chang-bin Sun ◽  
De-wen Li ◽  
Xiao-ming Shen ◽  
Yan-rui Kang ◽  
Rui Liu ◽  
...  

2017 ◽  
Vol 453 (1) ◽  
pp. 205-223 ◽  
Author(s):  
Martina Kirilova ◽  
Virginia G. Toy ◽  
Nick Timms ◽  
Angela Halfpenny ◽  
Catriona Menzies ◽  
...  

1992 ◽  
Vol 129 (4) ◽  
pp. 411-419 ◽  
Author(s):  
M. C. Dentith ◽  
A. Trench ◽  
B. J. Bluck

AbstractPreviously published models of gravity anomalies across the Highland Boundary Fault in western Scotland interpret this structure as a high-angle reverse fault. These gravity anomalies have been re-interpreted in the light of more extensive gravity data now available, and new density data from the Highland Border Complex. The new data suggest that earlier interpretations have overestimated the fault anomaly and used over-simplified density models. New gravity models of the Highland Boundary Fault Zone are presented which show that the interface between the Dalradian and Highland Border Complex dips to the northwest at an angle of about 20°. We interpret the contact between these two formations as a thrust fault. The interface between the Highland Border Complex and the Lower Old Red Sandstone is shown to be vertical as suggested by surface geology, with the latter rocks a few hundred metres thick.


1998 ◽  
Vol 52 (2) ◽  
pp. 139-158 ◽  
Author(s):  
M. C. Akhurst ◽  
R. P. Barnes ◽  
R. A. Chadwick ◽  
D. Millward ◽  
M. G. Norton ◽  
...  

2021 ◽  
pp. 1-15
Author(s):  
Deepak C. Srivastava ◽  
Ajanta Goswami ◽  
Amit Sahay

Abstract Delimiting the Aravalli mountain range in the east, the Great Boundary Fault (GBF) occurs as a crustal-scale tectonic lineament in the NW Indian Shield. The structural and tectonic characteristics of the GBF are, as yet, not well-understood. We attempt to fill this gap by using a combination of satellite image processing, high-resolution outcrop mapping and structural analysis around Chittaurgarh. The study area exposes the core and damage zone of the GBF. Three successive phases of folding, F1, F2 and F3, are associated with deformation in the GBF. The large-scale structural characteristics of the GBF core are: (i) a non-coaxial refolding of F1 folds by F2 folds; and (ii) the parallelism between the GBF and F2 axial traces. In addition, numerous metre-scale ductile shear zones cut through the rocks in the GBF core. The damage zone is characterized by the large-scale F1 folds and the mesoscopic-scale strike-slip faults, thrusts and brittle-ductile shear zones. Several lines of evidence, such as the inconsistent overprinting relationship between the strike-slip faults and thrusts, the occurrence of en échelon folds and the palaeostress directions suggest that the GBF is a dextral transpression fault zone. Structural geometry and kinematic indicators imply a wrench- and contraction-dominated deformation in the core and damage zone, respectively. We infer that the GBF is a strain-partitioned dextral transpression zone.


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