Browsing by Subject "tectonics"
Now showing items 1-20 of 39
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A brief study on the imprints of seismo tectonic activities in the crust of central and southern Bay of Bengal
(Association of Exploration Geophysicists, 2007)Bathymetry, magnetic and shallow seismic data collected north and south off Visakhapatnam revealed the extension of onshore lineaments to offshore. Stability of the area has been studied from the physical properties of ... -
A shallow seismic reflection study of the Gulf of Kutch, northwest India - Observations on its structural evolution
(Elsevier, 1988)A study of echosounding (678 line km) and shallow seismic reflection (180 line km) records of the E-W trending Gulf of Kutch, India showed the following features: The gulf margins in the east, and partly in the southeast ... -
Analyses of multichannel seismic reflection, gravity and magnetic data along a regional profile across the central-western continental margin of India
(Elsevier, 2002)Analysis of multichannel seismic reflection, gravity, magnetic and bathymetry data along a regional profile across the central-western continental margin of India have revealed the depositional pattern of sediments, crustal ... -
Ancient shorelines of Gujarat, India, during the Indus civilization (Late Mid-Holocene): A study based on archaeological evidences
(Current Science Association, Bangalore, India, 1999)Changes in the shoreline at any point could be due to various reasons such as tectonic disturbance or shift in sedimentological regime causing erosion or deposition. Many scientific investigations, focussing on the ... -
Back-arc extension in the Andaman Sea: Tectonic and magmatic processes imaged by high-precision teleseismic double-difference earthquake relocation
(American Geophysical Union, 2013)The geometry, kinematics, and mode of back-arc extension along the Andaman Sea plate boundary are refined using a new set of significantly improved hypocenters, global centroid moment tensor (CMT) solutions, and high-resolution ... -
Bathymetric highs in the mid-slope region of the western continental margin of India - Structure and mode of origin
(Elsevier, 2010)Analysis of the multi- and single beam bathymetric, seismic, magnetic and free-air gravity (ship-borne and satellite derived) data from the western continental margin of India between 12 degrees 40 minutes N and 15 degrees ... -
Bathymetric study of the Neotectonic Naini Lake in outer Kumaun Himalaya
(Geological Society of India, 1993)The Naini Lake is a product of rotational movement on a NW-SE trending Nainital Fault, quite after the establishment of the drainage of a mature stream named Balia Nala. Detailed bathymetric study, permits division of this ... -
Crustal structure and tectonics of the Ninetyeast Ridge from seismic and gravity studies
(American Geophysical Union, 2001)Seismic reflection and refraction, gravity, and bathymetric data across and along the central part of the Ninetyeast Ridge were analyzed to determine the crustal structure of the ridge and to understand its tectonics. The ... -
Early oceanic opening off Western India-Pakistan margin: The Gop Basin revisited
(Elsevier, 2009)The Deccan Traps, one of the best known examples of rapid flood basalt, are considered as marking of the inception of a mantle plume on the Indian continental lithosphere. Their emplacement may be associated with the ... -
Evidence for seafloor spreading in the Laxmi Basin, northeastern Arabian Sea
(Elsevier, 1994)Marine magnetic anomaly data from the Laxmi Basin for the first time reveal the presence of fairly correlatable NNW-trending magnetic lineations. These magnetic lineations are symmetric about a central negative magnetic ... -
Evidences for incipient hydrothermal event(s) in the Central Indian Basin: A review
(The Geological Society of China, 2005)The Central Indian Basin (CIB, 10 degrees-19 degrees S) encompasses morphotectonic features such as seamounts, abyssal hills, faults, fracture zones and lineations and basic to silicic volcanics that were derived from ... -
Evidences of late quaternary neotectonic activity and sea-level changes along the western continental margin of India
(Current Science Association, Bangalore, India, 1996)The offshore data on sea-level changes along the western margin of India have been reviewed and evidences of Late Quaternary neotectonic activity and subsidence are documented, based on the diagenetic textures of limestones ... -
Exploring the oceans- The geophysical way
(Current Science Association, Bangalore, India, 1993)The evolution of the eastern continental margin of India (ECMI), the Bengal Fan and the Central Indian Basin (CIB) is a consequence of the breakup of India from the eastern Gondwanaland in Late Jurassic to Early Cretaceous. ... -
Geophysical characteristics of the Ninetyeast Ridge–Andaman island arc/trench convergent zone
(Elsevier, 2008)The convergence tectonics of the Ninetyeast Ridge (NER), upon the Andaman island arc–trench system is examined through an analysis of ETOPO2 bathymetry, satellite-derived free air gravity and seismic data. Oblique subduction ... -
Impact of lower plate structure on upper plate deformation at the NW Sumatran convergent margin from seafloor morphology
(Elsevier, 2008)Results from multibeam bathymetric data acquired during 2005 and 2006, in the region of maximum slip of the 26 Dec. 2004 earthquake (Mw 9.2) are presented. These data provide high-resolution images of seafloor morphology ... -
Influences of Holocene sea level, regional tectonics, and fluvial, gravity and slope currents induced sedimentation on the regional geomorphology of the continental slope off northwestern India
(Elsevier, 1993)Regional geomorphology derived from echosounding and bathymetric data (lines of a total of 12,000 km), depth to basement, regional deep seated tectonic features, surficial sediment distribution and Holocene sedimentation ... -
Land-ocean tectonics (LOTs) and the associated seismic hazard over the Eastern Continental Margin of India (ECMI)
(Springer, 2010)The South Indian (Peninsular) Shield which includes both the Eastern and Western Continental Margins of India is not as stable as it was originally thought of. The importance of intraplate seismicity within this Shield has ... -
Magnetic basement in the central Bay of Bengal
(Kluwer, 2002)Analyses of about 6000 km of processed magnetic data in the central Bay of Bengal using Analytical Signal Processing and Werner Deconvolution techniques revealed that the depth to top of the magnetic basement varies between ... -
Magnetic Surveys of the Continental Shelf off Visakhapatnam
(Indian Association for Limnology and Oceanography, 1980)Continuous magnetic surveys over the continental shelf off Visakhapatnam reveal total magnetic field anomalies of high amplitude and short period over the inner shelf and of comparatively low amplitude with long period ...