Structural evolution of a gneiss dome in the axial zone of the proterozoic South Delhi Fold Belt in central Rajasthan

2010 ◽  
Vol 75 (1) ◽  
pp. 18-31 ◽  
Author(s):  
Dhruba Mukhopadhyay ◽  
Nandini Chattopadhyay ◽  
Tapas Bhattacharyya
Keyword(s):  
Structural Evolution ◽  
Fold Belt ◽  
Axial Zone ◽  
Gneiss Dome ◽  
South Delhi Fold Belt

Structural evolution and U/Pb zircon age of the Xambioá gneiss dome, contributions to the Araguaia fold belt tectonic history

2020 ◽  
Vol 104 ◽  
pp. 102753
Author(s):  
Rogério Alves Bordalo ◽  
Ticiano José Saraiva dos Santos ◽  
Elton L. Dantas
Keyword(s):  
Structural Evolution ◽  
Fold Belt ◽  
Gneiss Dome ◽  
Zircon Age ◽  
Tectonic History

scholarly journals Structural analysis of the Rio Preto fold belt (northwestern Bahia / southern Piauí), a doubly-vergent asymmetric fan developed during the Brasiliano Orogeny

2014 ◽  
Vol 86 (3) ◽  
pp. 1101-1113 ◽  
Author(s):  
FABRÍCIO A. CAXITO ◽  
ALEXANDRE UHLEIN ◽  
LUIZ F.G. MORALES ◽  
MARCOS EGYDIO-SILVA ◽  
JULIO C.D. SANGLARD ◽  
...  
Keyword(s):  
Structural Analysis ◽  
Structural Evolution ◽  
Shear Zones ◽  
Central Compartment ◽  
Strike Slip ◽  
Fold Belt ◽  
Main Structure ◽  
The North ◽  
Brasiliano Orogeny ◽  
Analog Models

The Rio Preto fold belt borders the northwestern São Francisco craton and shows an exquisite kilometric doubly-vergent asymmetric fan structure, of polyphasic structural evolution attributed exclusively to the Brasiliano Orogeny (∼600-540 Ma). The fold belt can be subdivided into three structural compartments: The Northern and Southern compartments showing a general NE-SW trend, separated by the Central Compartment which shows a roughly E-W trend. The change of dip of S2, a tight crenulation foliation which is the main structure of the fold belt, between the three compartments, characterizes the fan structure. The Central Compartment is characterized by sub-vertical mylonitic quartzites, which materialize a system of low-T strike slip shear zones (Malhadinha – Rio Preto Shear Zone) crosscutting the central portion of the fold belt. In comparison to published analog models, we consider that the unique structure of the Rio Preto fold belt was generated by the oblique, dextral-sense interaction between the Cristalândia do Piauí block to the north and the São Francisco craton to the south.

Structural evolution of the Thor-Odin gneiss dome

1984 ◽  
Vol 101 (1-2) ◽  
pp. 87-130 ◽  
Author(s):  
Ian James Duncan
Keyword(s):  
Structural Evolution ◽  
Gneiss Dome

Geochemical and Petrogenetic Study of Proterozoic Sewariya and Govindgarh Granitoids from South Delhi Fold Belt

2015 ◽  
Vol 109 (8) ◽  
pp. 1458 ◽  
Author(s):  
Soumya Ray ◽  
Kumar Batuk Joshi ◽  
S. Sundarraman ◽  
Deepak Joshi ◽  
Talat Ahmad
Keyword(s):  
Fold Belt ◽  
South Delhi Fold Belt

scholarly journals Relationship between geology and landslide occurrence in the Sor Range, Quetta, Pakistan

2004 ◽  
Vol 30 ◽  
Author(s):  
Abdul Tawab Khan
Keyword(s):  
Sedimentary Rocks ◽  
Late Eocene ◽  
Landslide Susceptibility Mapping ◽  
Early Eocene ◽  
Thrust Faults ◽  
Fold Belt ◽  
Axial Zone ◽  
Landslide Occurrence ◽  
Fold Belts ◽  
Dip Slope

The Sor Range is situated about 16 km east of Quetta in the axial zone west of the Sulaiman Thrust- Fold Belt. It contains sedimentary rocks ranging in age from Jurassic to Recent. The Ghazij Formation of Early Eocene is divided into the Lower, Middle, and Upper Members, respectively. The Kirthar Formation of Late Eocene age is divided into the Habib Rahi Limestone and Serki Member. The Siwaliks of Miocene to Pleistocene age consist of the Nagri, Dhok Pathan, and Soan Formation (Urak conglomerate) and are overlying the Kirthar Formation with an unconformity. Landslide susceptibility mapping was carried out on a scale of 1:50,000. This study describes various ancient and active landslides in the area and fissures developed in the Ghazij Formation that cover an area of about 130,000 m2. There are also several hundred metres long and very wide fissures in the dip slope of the Kirthar Formation. The widespread instabilities are confined to the fold belts as well as major wrench and thrust faults, and they were triggered or reactivated by earthquakes.

scholarly journals The Mesozoic–Cenozoic tectonic evolution of the New Siberian Islands, NE Russia

2014 ◽  
Vol 152 (3) ◽  
pp. 480-491 ◽  
Author(s):  
CHRISTIAN BRANDES ◽  
KARSTEN PIEPJOHN ◽  
DIETER FRANKE ◽  
NIKOLAY SOBOLEV ◽  
CHRISTOPH GAEDICKE
Keyword(s):  
Tectonic Evolution ◽  
Structural Evolution ◽  
Arctic Shelf ◽  
Laptev Sea ◽  
Russian Arctic ◽  
Thrust Belt ◽  
Fold Belt ◽  
New Siberian Islands ◽  
Ne Russia ◽  
The Laptev Sea

AbstractOn the New Siberian Islands the rocks of the east Russian Arctic shelf are exposed and allow an assessment of the structural evolution of the region. Tectonic fabrics provide evidence of three palaeo-shortening directions (NE–SW, WNW–ESE and NNW–SSE to NNE–SSW) and one set of palaeo-extension directions revealed a NE–SW to NNE–SSW direction. The contractional deformation is most likely the expression of the Cretaceous formation of the South Anyui fold–thrust belt. The NE–SW shortening is the most prominent tectonic phase in the study area. The WNW–ESE and NNW–SSE to NNE–SSW-oriented palaeo-shortening directions are also most likely related to fold belt formation; the latter might also have resulted from a bend in the suture zone. The younger Cenozoic NE–SW to NNE–SSW extensional direction is interpreted as a consequence of rifting in the Laptev Sea.

Analysis of superposed strain: A case study from Barr Conglomerate in the South Delhi Fold Belt, Rajasthan, India

2012 ◽  
Vol 34 ◽  
pp. 30-42 ◽  
Author(s):  
Nilanjan Dasgupta ◽  
Dhruba Mukhopadhyay ◽  
T. Bhattacharyya
Keyword(s):  
Fold Belt ◽  
The South ◽  
South Delhi Fold Belt

Petrology of Ocellar Lamprophyres in South Delhi Fold Belt, Danva, Sirohi District, Rajasthan, India

2001 ◽  
Vol 4 (3) ◽  
pp. 497-508 ◽  
Author(s):  
Fareeduddin ◽  
I.R. Kirmani ◽  
B. Basavalingu
Keyword(s):  
Fold Belt ◽  
South Delhi Fold Belt
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