Browsing Institute's contributions by Subject "tectonics"
Now showing items 21-39 of 39
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Morphotectonics of the Carlsberg Ridge between 62 degrees 20 minutes and 66 degrees 20 minutes E, northwest Indian Ocean
(Elsevier, 2008)The segmentation pattern of 440 km long section of the Carlsberg Ridge between 62 degrees 20 minutes E and 66 degrees 20 minutes E, in the northwest Indian Ocean, has been studied using multibeam bathymetry and magnetic ... -
Neotectonism - An offshore evidence from eastern continental shelf off Visakhapatnam
(Current Science Association, Bangalore, India, 1999)A minor tremor measuring 4.5 on the Richter scale occurred around 4.58 p.m. on 18 December 1995, with its epicentre located in the Bay of Bengal, nearly 30 km east of Vizianagaram on the Andhra Pradesh coast. The location ... -
New insights into the tectonic evolution of the Andaman basin, northeast Indian Ocean
(Elsevier, 2004)Multibeam swath bathymetry data acquired over an area of about 30 000 km 2 ,together with magnetic and single channel seismic data, have been analyzed to understand the tectonic evolution of the Andaman basin,northeast ... -
Petrology of tectonically segmented Central Indian Ridge
(Current Science Association, Bangalore, India, 1993)Distribution and mineralogy of various rock types along the 4200-km-long slow-spreading Central Indian Ridge, between Owen fracture zone in the north and Indian Ocean triple junction in the south, is studied in the light ... -
Reactivation of precambrian faults on the southwestern continental margin of India: Evidence from gravity anomalies
(Elsevier, 1993)Gravimetric and bathymetric studies on the southwestern continental margin of India confirm the extension of onshore NW-SE-, NNW-SSE-, N-S-, NE-SW-, ENE-WSW- and E-W-trending lineaments of Precambrian age over a considerable ... -
Regional tectonic trends on the inner continental shelf off Konkan and central west coast of India
(Springer, 1986)Satellite imagery and offshore magnetic data were analysed to correlate regional tectonic elements on the inner continental shelf off Konkan and the adjacent Deccan plateau. Three statistically important lineament trends ... -
Seamounts - windows of opportunities and the Indian scenario
(Current Science Association, 2012)Seamounts are manifestations of crustal tectonics and volcanism, and are also sites of biodiversity and hydrothermal events. Although the population of seamounts is estimated to be in thousands, a large number of these ... -
Signatures of Late Quaternary sea-level changes and Neo-tectonic activity over Visakhapatnam - Gopalpur shelf, east coast of India
(New Academic Publishers, Delhi, 2001)High-resolution shallow seismic and echo sounding profiles of the continental shelf between Visakhapatnam and Gopalpur reveal prominent morphological features like terraces, reefs and pinnacles at different water depths ... -
Significance of uniaxial and hydrostatic pressure studies on ancient oceanic rocks in tectonics
(Taylor and Francis, 1994)Uniaxial studies are carried out on Indus suture zone rocks of Kashmir Himalaya, which are supposed to be dismembered ophiolites. The percentage difference between the sonic and static determined Young's modulus varies ... -
Some geodynamic complexities related to the evolution of Bengal Fan and the neotectonic activity of the south Indian shield
(Current Science Association, Bangalore, 1997)After three decades of the International Indian Ocean Expedition (IIOE) and in spite of extensive geophysical data collected during the last one decade, the geodynamics of the Bengal Fan and the Peninsular shield at the ... -
Statistical analysis of lineaments of Goa, India
(Current Science Association, 1989)A study of the lineaments of Goa identified from aerial photographs is presented here. The shapes of histograms representing direction vs total number and direction vs total length have close similarities. The trended data ... -
Structure and tectonics of the southwestern continental margin of India
(Elsevier, 1995)A NNW-SSE-trending graben in the inner shelf (40-60 m isobaths), a mid-shelf basement ridge (60-150 m isobaths), a shelf-margin basin (150-1000 m isobaths) and the Prathap Ridge Complex in the slope (1000-2000 m isobaths) ... -
Studying the Indian Ocean Ridge System: Agenda for the new century
(Geological Society of India, 1999)Studies on the Indian Ocean Ridge System, though sporadic, was aimed to map the complete IORS petrologically and tectonically. Three areas are placed for immediate investigation; one in the slow spreading Carlsberg Ridge ... -
Submarine terrace limestones from the continental slope off Saurashtra-Bombay: Evidence of Late Quaternary neotectonic activity
(Current Science Association, Bangalore, India, 1996)Bathymetric and shallow seismic data from the continental slope off Saurashtra-Bombay indicate wide submarine terraces at 130, 145 and 170 m and reefal structures at 320-360 m water depths. 10 cm thick slabs of limestones ... -
Tectonics of the Bay of Bengal: New insights from satellite-gravity and ship-borne geophysical data
(Elsevier, 1999)Recently released satellite-derived free air gravity anomalies and the existing ship-board geophysical data provide new insights into the tectonics of the Bay of Bengal with respect to the structure and regional extension ... -
Tectonics of the Ninetyeast Ridge derived from spreading records in adjacent oceanic basins and age constraints of the ridge
(American Geophysical Union, 2012)Analysis of new and existing geophysical data for the Central Indian and Wharton Basins of the Indian Ocean were used to understand the formation and evolution of the Ninetyeast Ridge (NER), especially its relationship to ... -
The 2005 volcano-tectonic earthquake swarm in the Andaman Sea: Triggered by the 2004 great Sumatra-Andaman earthquake
(American Geophysical Union, 2012)A 6 day duration earthquakes swarm occurred in the Andaman Sea, 31 days after the giant 2004 Sumatra-Andaman earthquake (Mw 9.2). The swarm occurred less than 100 km from the eastern edge of the 2004 earthquake rupture and ... -
The Indian Ocean Nodule Field: Petrotectonic evolution and ferromanganese deposits
(Elsevier, 2002)The crust of the Indian Ocean Nodule Field (IONF), in the Central Indian Ocean Basin (10 degrees-16 degrees 30 minutes; 72 degrees-80 degrees E) and hosting the world's second largest and second highgrade manganese nodule ... -
Western Indian Ocean - A glimpse of the tectonic scenario
(Oxford and IBH, New Delhi, 2001)The Western Indian Ocean is a veritable storehouse of diverse and complex tectonic features. Most of the knowledge about the major tectonic features of this area has emanated from the studies carried out with the geophysical ...