Now showing items 1-10 of 207
Our changing coastlines
Our coastlines keep alive the sense of continuing creation and of the relentless drive of life In recent years, much has been done both to understand the processes that underlie their creation and to exploit their environment ...
Mineralogy of the carbonate sediments - western continental shelf of India
An X-ray diffraction study of forty-six sediment samples and three oolitic limestone samples from the western continental shelf of India shows that aragonite is the dominant carbonate mineral (99% maximum), followed by ...
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 ...
Frequency distribution of foraminifera off Trivandrum, west coast of India
Fifty two species belonging to 31 genera of recent foraminifera have been identified from sediment samples collected from the inshore waters. Based on relative abundance of species, it is observed that along the coast, the ...
Mineralogy of polymetallic nodules and associated sediments from the Central Indian Ocean Basin
Todorokite is the dominant mineral phase in the nodules of the northern Central Indian Ocean Basin. These nodules are characterised by a rough surface texture, are relatively rich in Mn, Cu and Ni, and are associated with ...
Morphological variations in the polymetallic nodules from selected stations in the Central Indian Ocean
Polymetallic nodules from the Central Indian Ocean largely range in size from 2 to 6 cm. The smaller nodules (4 cm) are subspheroidal to spheroidal in shape and with the increase in size, nodules become more discoidal and ...
Petrography of basalts from the Carlsberg ridge
Petrographic characteristics of basalts collected from a segment of the Carlsberg Ridge (lat. 3 degrees 35'N to 3 degrees 41'N; long. 64 degrees 05'E to 64 degrees 09'E) show typical pillow lava zonations with variable ...
Late Pleistocene carbonate sediments and rocks on the western continental shelf of India
(Pune: Nowrosjee Wadia College, 1989)
Computation of nodule abundance from seabed photos
This paper was selected for presentation by the OTC Program Committee following review of information contained in an abstract submitted by the author(s). Contents of the paper, as presented, have not been reviewed by the ...
Morphology of an uncharted seamount from Central Indian Basin
The morphology of a seamount at 12 degrees 35'S and 76 degrees 16'E is studied. This conical seamount has a maximum height of 1275 m (water depth 4135 m) and covers an area of about 189 sq km. The maximum basal extension ...