Crustal thickness estimation and tectonic analysis of the Amazonian Craton from gravity data

The research work is based on gravity data is taken from numerous parts of an active tectonic belt of AzadKashmir to delineate the crustal thickness and demarcation of thin- skin and thick-skin structures in the study area. Thestudy area includes Bagh, Dhirkot, Arja, Kohala, Sudhan Gali, Ghazi Abad, Chikkar and Chakoti. The study areabounded by the latitude 33°59′3″ and 34°9′22″ N and longitude 73°37′26″ and 73°40′16″ E. The proposed study area isa complex geological entity and is an active zone. This study has been focused to assess the subsurface lithology andstructural geometry present in Bagh and surrounding areas. For this purpose the gravity data has been acquired with thehelp of CG-5 Auto-grav using multi-profile survey technique. Gravity model suggested that Riasi Thrust in the studyzone is plunging at an angle of 42° NE and pierces to a depth of 7 km in the sub-surface. The model also suggested thatBagh Basement Fault in the study area is dipping at an angle of 75° NE in the crystalline basement up to Moho depth.Shaheed Galli Thrust has been delineated in Dhirkot area. The fault dips at 49° NE and penetrated up to a depth of 8km in the sedimentary/meta-sedimentary wedge. The geological model demarcated, 11 km depth of sedimentary/metasedimentary wedge in the southwest and 13 km in the northeast area. The crustal thickness increases from 51 km in thesouthwest area to about 53.17 km in the northeast area.

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Insights on the framework of the Carajás Province, Amazonian Craton, Brazil, and on the three-dimensional shape of the Carajás Basin, based on gravity data

Journal of the Geological Survey of Brazil ◽

10.29396/jgsb.2018.v1.n3.1 ◽

2018 ◽

Vol 1 (3) ◽

pp. 101-112 ◽

Cited By ~ 4

Author(s):

Roberto Oliveira ◽

Keyword(s):

Gravity Data ◽

Three Dimensional ◽

Amazonian Craton ◽

Dimensional Shape ◽

Three Dimensional Shape ◽

Carajás Province

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Crustal thickness of Egypt determined by gravity data

Journal of African Earth Sciences ◽

10.1016/s0899-5362(97)00114-0 ◽

1997 ◽

Vol 25 (3) ◽

pp. 425-434 ◽

Cited By ~ 8

Author(s):

A.S. Dorre ◽

E. Carrara ◽

F. Cella ◽

M. Grimaldi ◽

Y.A. Hady ◽

...

Keyword(s):

Gravity Data ◽

Crustal Thickness

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Crustal Thickness of Chinese Mainland Inversed by GOCE Satellite Gravity Data

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.568-570.288 ◽

2014 ◽

Vol 568-570 ◽

pp. 288-291

Author(s):

Hai Jun Xu ◽

Hu Rong Duan ◽

Jian Ye Zhou

Keyword(s):

Comparative Analysis ◽

Gravity Anomaly ◽

Gravity Data ◽

Crustal Thickness ◽

Geoid Height ◽

Chinese Mainland ◽

Satellite Gravity ◽

Inversion Result ◽

Goce Satellite

GOCE satellite gravity data is often used to compute gravity anomaly and geoid height. In the paper, GOCE gravity data is used to inverse the crustal thickness of Chinese mainland (E70°~130°, N20°~50°) in this paper. In order to test the reliability of the result, the computing result is compared with previous studies. The comparative analysis shows that the inversion result by GOCE gravity data has higher resolution and has good consistence with the previous studies.

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