Browsing by Subject "Geology and Geophysics"
Now showing items 1-20 of 376
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234Th scavenging and particle export fluxes from the upper 100 m of the Arabian Sea
(Current Science Association, 1996)We have determined the particle scavenging rates, export fluxes of @u234@@Th and settling particles from the upper 100 m of the Arabian Sea as a part of the JGOFS (India) Programme. The spatial and temporal measurements ... -
26th December 2004 great Sumatra-Andaman earthquake: Co-seismic and post-seismic motions in northern Sumatra
(Elsevier, 2007)Trench-parallel thrust faults verging both landward and seaward were mapped in the portion of wedge located between northern Sumatra and the Indian-Indonesian boundary The spatial aftershocks distribution of the 26th ... -
A checklist of benthic foraminiferids from the inner shelf of Dabhol-Vengurla region, Arabian Sea
(Geological Society of India, 1979)Sixty-four benthonic foraminiferids are reported from Dabhol-Vengurla innershore neritic environment and they are listed in the order of their relative abundance. Small microenvironments or milieus created by the dominance ... -
A description of sediment cores from the Arabian Sea
(1972)This study describes in detail the lithologic character of five sediment cores from the Arabian Sea (shelf, slope, and basins) and summarizes the distribution and occurrence of their characteristic lithofacies and biofacies ... -
A mega-porphyritic dolerite intrusion at San Pedro, Goa
(Current Science Association, 1974) -
A note on an occurrence of pseudo-pumice along the beaches of Goa and Karnataka
(CSIR-NISCAIR, 2015)Clasts showing typical physical features of pumice were found scattered along the beaches of Goa and Karnataka Their chemical composition suggests a large variation in SiO<sub>2</sub> content (69% to 93%), with an unusual ... -
A note on the occurrence of ortho-amphibolites on the inner shelf off Bhatkal, west coast of India
(Geological Society of India, 1987)The total magnetic intensity map of the area shows that the inner shelf to a depth of 50m is marked by a zone of magnetic closures. The occurrence of offshore orthoamphibolites and the qualitative interpretation of the ... -
A petrographic study of Precambrian quartzites from Goa coast
(Indian Association for Limnology and Oceanography, 1980)A petrographic and heavy minerals study of quartzites along the Goa Coast, India has been undertaken to decipher their sediment history. The quartzite outcrops exhibit well preserved primary sedimentary structures like ... -
A preliminary report on the foraminiferal assemblages from the lagoon sediment of Kavaratti atoll (Laccadives)
(Current Science Association, 1973) -
A review on the nomenclature of Angadimogar and Kumbdaje plutons, Kasaragod district, Kerala
(Geological Society of India, 2005)Pink and grey granites occur as minor, more or less circular bodies as Angadimogar and Kumbdaje areas of Kasaragod district, covering about 10 km sup(2) These granites are emplaced within the charnockites and gneisses ... -
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 ... -
A two-stage evolution of Visakhapatnam-Paradip Shelf, east coast of India, from magnetic studies
(Indian Academy of Sciences, Bangalore, 1994)A detailed analysis of bathymetry and magnetic data of Visakhapatnam-Paradip shelf, east coast of India revealed three major structural lineaments over the shelf/slope of the area. Models derived from the anomalies associated ... -
Acoustic Masking due to Gases in Shallow Seismic profiling on the shelf off Bombay
(CSIR-NISCAIR, 1980)Shallow seismic profiling on the inner shelf off Bombay indicates 25-35 m thick acoustically transparent clays covering the seabed. At depth of 22 to 30 m and 50 m the profiles and echograms are marked by turbidity resembling ... -
Aeolian sand transport and its effects on the stability of Miramar-Caranzalem beach
(Indian Association for Limnology and Oceanography, 1988)Removal of sand by wind from the beach at Miramar-Caranzalem, Goa, has been found to effect its stability over a relatively longer time scale. This aeolian sand transport has been computed for this strip of the beach ... -
Aeromagnetic anomalies in the Bengal fan
(CSIR-NISCAIR, 1976) -
Agglutinated foraminifera from the shelf of east coast of India
(1972)Of the benthonic foraminiferal species, the agglutinated forms form one of the distinctive elements by differing in type and the degree of their abundance in the several zones of the marine environment. The role played by ... -
An aberrant Spiroloculina sp. from Recent sediments off Bombay-Daman, west coast of India
(Indian Association for Limnology and Oceanography, 1983)A case of an abnormal two apertured Spiroloculina sp. was encountered in a sample from 90 m depth off Bombay-Daman. This was a case of regeneration/repair