Browsing Institute's contributions by Subject "magnetic anomalies"
Now showing items 21-40 of 44
-
Marine geophysical studies off Karwar, West Coast of India
(Geological Society of India, 1989)Geophysical studies of the southwestern continental margin revealed significant surface and subsurface topographic highs (ridges) trending NNW-SSE to NW-Se beyond the shelf break. Residual magnetic anomaly map depicts ... -
Marine magnetic anomalies as a link between the granulite belts of east coast of India and enderby land of Antarctica
(Geological Society of India, 1997)Magnetic data of the eastern continental margin of India (ECMI) helped in demarcating the offshore extension of the granulite belts of east coast of India and their possible link to those of the East Aantarctica. Short ... -
Marine magnetic anomalies off Ratnagiri, Western continental shelf of India
(Elsevier, 1984)Total magnetic intensity and bathymetric surveys were carried out in the offshore area of Ratnagiri on the western continental shelf of India and an isomagnetic anomalies map at a contour interval of 50 nT was prepared ... -
Marine magnetic anomalies off the southwest coast of India and their analysis
(Geological Society of India, 1977)Total magnetic intensity and bathymetric surveys were carried out in the offshore area of Ratnagiri on the western continental shelf of India and an isomagnetic anomalies map at a contour interval of 50 nT was prepared ... -
Marine magnetic profiles from the Direction Bank to the Kori Bank, Western Continental shelf of India
(Geological Society of India, 1986)Total magnetic field intensity measurements along two parallel NW-SE tracks from the Direction Bank to the Kori Bank show corelatable magnetic anomalies. High frequency positive anomalies observed northwest of Kathiawar ... -
Marine magnetic studies over a lost wellhead in Palk Bay, Cauvery Basin, India
(Geological Society of India, 1995)Close grid marine magnetic surveys in the vicinity of a drill well site PH 9-1 in Palk Bay revealed that the area is characterized by smooth magnetic field except for a local anomaly caused by a lost wellhead. The smooth ... -
Marine magnetic studies over a lost wellhead in Palk Bay, Cauvery Basin, India
(Geological Society of India, 1995)Close grid marine magnetic surveys in the vicinity of a drill well site PH 9-1 in Palk Bay revealed that the area is characterized by smooth magnetic field except for a local anomaly caused by a lost wellhead. The smooth ... -
Mesozoic anomalies in the Bay of Bengal
(Elsevier, 1994)The analysis of 8200 line km of total magnetic intensity data in the Bay of Bengal, northeastern Indian Ocean, revealed the presence of approximately N30~'E-trending seafloor spreading type magnetic anomalies. These anomalies ... -
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 ... -
Offshore extension of the structural element of Udipi, confirmation from marine magneties
(Geological Society of India, 1987)The isomagnetic anomaly map (1:3,00,000) reflects conspicuous E-W, NW-SE, WNW-ESE, NE-SW and N-S trends which are similar to that of the onshore Dharwar trend. The map also shows short wavelength, high amplitude anomalies ... -
Paleogene magnetic isochrons and palaeo-propagators in the Arabian and Eastern Somali basins, NW Indian Ocean
(Geological Society of London, UK, 2002)A revised magnetic isochron map of the conjugate Arabian and Eastern Somali basins based on an up-to-date compilation of Indian, French, and other available sea-surface magnetic data are presented. The magnetic anomaly and ... -
Record of the Cretaceous magnetic quiet zone in the distal Bengal fan and its significance in understanding the evolutionary history of the northeastern Indian Ocean
(Assoc. of Explor. Geophys., Hyderabad, India, 1996)The Bengal Fan was one of the thickest sedimentary basins of the World. Many were of the view that the magnetic anomalies will be hard to find off East Coast of India due to this huge sediment accumulation. Though extensive ... -
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 ... -
Seafloor spreading magnetic anomalies in the Enderby Basin, East Antarctic
(Elsevier, 2001)The timing of the early separation of India from the contiguous Antarctic-Australia is still an unresolved problem although it is well established that Antarctica and India formed a single Indo-Antarctic platform prior to ... -
Seafloor spreading magnetic anomalies in the southeastern Arabian Sea
(Elsevier, 1995)Study of closely spaced new marine magnetic profiles in the southeastern Arabian Sea has enabled fairly confident identification of E-W trending linear magnetic anomalies 24 through 20. These magnetic lineations are ... -
Segmentation and morphology of the Central Indian Ridge between 3°S and 11°S, Indian Ocean
(Elsevier, 2012)The segmentation pattern of 750 km long Central Indian Ridge (CIR) between 3 degrees S and 11 degrees S latitudes in the Indian Ocean has been studied using multibeam bathymetry and magnetic data. Twelve ridge segments ... -
Spreading history of the Arabian Sea: Some new constraints
(Elsevier, 1993)Based on a new identification of magnetic anomalies, additional constraints are provided on the two episodes of spreading history of the Arabian Sea. Commencing at A27, the older phase ended at A21 and sprading of the ... -
Structural interpretation of the Konkan basin, southwestern continental margin of India, based on magnetic and bathymetric data
(Springer, 1994)Magnetic and bathymetric studies on the Konkan basin of the southwestern continental margin of India reveal prominent NNW-SSE, NW-SE, ENE-WSW, and WNE-ESE structural trends. The crystalline basement occurs at about 5-6 km ...