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NISCAIR ONLINE PERIODICALS REPOSITORY (NOPR) >
NISCAIR PUBLICATIONS >
Research Journals >
Indian Journal of Geo-Marine Sciences (IJMS) >
IJMS Vol.39 [2010] >
IJMS Vol.39(4) [December 2010] >
| Title: | Marine sand resources in the south-west continental shelf of India |
| Authors: | Sukumaran, P V
Unnikrishnan, E
Gangadharan, A V
Zaheer, B
Abdulla, N M
Kumaran, K
Ramachandran, K V
Hegde, S V
Maran, N
Bhat, K K
Rao, M K
Dinesh, A C
Jayaprakash, C
Praveen Kumar, P
Shareef, N M
Gopalan, C V |
| Keywords: | Marine sand
Kerala
Continental shelf
Beach sand
Construction material |
| Issue Date: | Dec-2010 |
| Publisher: | NISCAIR-CSIR, India |
| Abstract: | Considering the impending shortage of construction material, the Marine and
Coastal Surveys Division of the GSI, Mangalore has been in the look out for
marine sand in the territorial waters and EEZ of the western offshore of India
since the early nineteen nineties. Though sandy sediments were identified at
many locations on the shelf and slope during several cruises, it was during two
of the GSI’s cruises on board R.V. Samudra Shaudhikama, (SD-1531 and
SD-1602 off Kollam, 1998-2000) that a detailed assessment of the
distribution of construction sand was made. So far the GSI has executed five
cruises exclusively for exploring construction sand off the West Coast. Out of
these, two cruises off Kollam have indicated probable sand reserves of 184
million tonnes over an area of 180 sq km to a depth of 1.5 m down from the seafloor
and located 25-40 km
away from the coast. The data of the other cruises identified the occurrence of
sand deposits off Kannur (267 million tonnes over an area of 500 sq km) and
Chavakkad (1336 million tonnes over an area of 543 sq km). Off Kochi-Kollam
marine sediments containing >85% silica sand have been identified during
cruises SD-2073, 2094 and 216. Besides in an area, 8 km west of Beypore-Ponnani
coast, good quality quartz sand was identified in two large basins close to the
coastline where the thickness of sand formation exceeds 3.5 metres. |
| Page(s): | 572-578 |
| CC License: |  CC Attribution-Noncommercial-No Derivative Works 2.5 India |
| ISSN: | 0975-1033 (Online); 0379-5136 (Print) |
| Source: | IJMS Vol.39(4) [December 2010]
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