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Local Gravity Anomaly and Geotectonics in the Dharamsala Palampur Area, Northwest Himalaya
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Gravity survey in the station spacing of about 2 km was carried out in Dhararnsala-Palampur area (36 x 20 km) of the northwest Himalaya to study the seismotectonics of the region. The regional trend of Bouguer anomaly shows general decrease from -230 mGal to -250 mGal from south to north. The present gravity survey in DhararnsaIa-Palampur area has brought out some gravity highs trending transverse to the Himalayan trend. The presence of gravity high zone in the central portion of the study area near Yol may indicate either an anticlinal structure or emplacement of denser material from below, probably along the southeast dipping transverse feature noticed in the area. Another gravity high is noticed southwest of Palampur, also named as Paror anticline. The Bouguer anomaly map has helped to detect some transverse faults trending northeast-southwest and north-south i.e. oblique to the major thrust in the Dharamsala-Palampur region.
Keywords
Geophysics, Tectonics, Gravity Anomaly, Himalaya.
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