Light minerals of beach sediments from Southern Tamilnadu, South East coast of India

• Autorzy: Cherian A. , Chandrasekar N. , Rajamanickam V.
• Języki publikacji: EN

Abstrakty

EN

A brief investigation of light minerals along the beaches between Valinokkam and Tuticorin has been carried out for the first time along the Southern Tamilnadu coast in order to discover the provenance of the sediments. The study spotlights a wide variation in light mineralogy along the three zones of the investigated area (Valinokkam, Vaippar and Tuticorin). A higher percentage of quartz is reported from the Valinokkam (48.34 to 68.63%) and Tuticorin zones (55.66 to 73.05%) than from the Vaippar zone (40.24 to 60.77%). The trend with regard to the maturity index is similar, with appreciably higher values in Valinokkam (1.15 to 1.89) and Tuticorin (1.61 to 1.94) than Vaippar (0.79 to 1.39). Morphological analysis of quartz grains shows a higher order of sphericity and roundness values in Valinokkam and Tuticorin as compared to Vaippar. Moreover, the surface texture of quartz grains observed with the aid of scanning electron microscope (SEM) photographs reveals the presence of different depositional environments and the multiple origin of beach sediments in the study area. From the present study of the light mineralogy of beach sediments, it is inferred that the source of the sediments is a mixed type: igneous and metamorphic crystalline rocks, together with palaeosediments.

Słowa kluczowe

EN

sphericity; Tamilnadu; beach; provenance; India; light mineral; quartz; sediment; coast; roundness

• Wydawca: -
• Czasopismo: Oceanologia
• Rocznik: 2004
• Tom: 46
• Numer: 2
• Opis fizyczny: p.233-252,fig.,ref.

Twórcy

autor

Cherian A.

• M.S.University, Rajakkamangalam, Nagercoil, 629 502 Tamilnadu, India

autor

Chandrasekar N.

autor

Rajamanickam V.

Bibliografia

• Anil Cherian, 2003, Sedimentological studies in the beaches between Valinokkam and Tuticorin, Tamilnadu, Ph. D. thesis, Tamil Univ., Thanjavur, 189 pp.
• Anirudhan S., Thiruvikramji K.P., 1991, Petrography of light detrital grains: a case study from Bharathapuzha, Kerala, Indian J. Earth Sci., 18, 27–32.
• Basu A., Young S.W., Suttner L. J., James W. J., Mack C.H., 1975, Re-valuation of the use of undulatory extinction and polycrystallinity in detrital quartz for provenance interpretation, J. Sediment. Petrol., 45 (4), 873–882.
• Blatt H., 1967, Provenance determinations and recycling of sediments, J. Sediment. Petrol., 37 (4), 1031–1044.
• Blatt H., 1982, Sedimentary petrology, W.H. Freeman & Co., New York, 557 pp.
• Blatt H., Christie J.M., 1963, Undulatory extinction in quartz of igneous and metamorphic rocks and its significance in provenance studies of sedimentary rocks, J. Sediment. Petrol., 33 (3), 559–570.
• Chandrasekar N., Anil Cherian, Rajamanickam M., Rajamanickam G.V., 2000, Coastal landform mapping between Tuticorin and Vaippar using IRS – IC Data, Indian J. Geomor., 5, 114–120.
• Curray J.R., Griffiths J.C., 1955, Sphericity and roundness of quartz grains in the sediments, Bull. Geol. Soc. Amer., 66, 1075–1096.
• Dake C. L., 1921, The problem of the St. Peter sandstone, Bull. Univ. Missouri, Sch. Mines Metall. Tech. Ser., 6 (1), 152–158.
• ErnstW.G., Blatt H., 1964, Experimental study of quartz overgrowths and synthetic quartzites, J. Geol., 72, 461–470.
• Galehouse J. S., 1969, Counting grain mounts: number percentage vs. number frequency, J. Sediment. Petrol., 39, 812–815.
• Higgs R., 1979, Quartz grain surface features of Mesozoic-Cenozoic sands from the Labrador and western Greenland continental margins, J. Sediment. Petrol., 49, 599–610.
• Krinsley D.H., Doornkamp J.C., 1973, Atlas of quartz sand surface textures, Cambridge Univ. Press, Cambridge, p. 37.
• Lindholm R. C., 1987, A practical approach to sedimentology, Allen & Unwin Press, London, p. 230.
• Loveson V. J., 1994, Geological and geomorphological investigations related to sea level variation and heavy mineral accumulation along the southern Tamilnadu beaches, India, Ph.D. thesis, Madurai Kamaraj Univ., Madurai, 197 pp.
• Madhvaraju J., Ramasamy S., 1999,Microtextures on quartz grains of Campanian-Maastrichtian sediments of Ariyalur group of Tiruchirapalli Cretaceous, Tamil Nadu – implication on depositional environments, J. Geol. Soc. India, 54 (6), 647–658.
• Mallik T. K., 1986, Micromorphology of some placer minerals from Kerala beach, India, Mar. Geol., 71 (3)–(4), 371–381.
• Milner I., 1962, Sedimentary petrography, Vols. 1–2, Allen & Unwin, Ltd., London, 643–715.
• Morton A.C., 1984, Stability of detrital heavy minerals in Tertiary sandstones from the North Sea Basin, Clay Miner., 94, 287–308.
• Mukherji K. K., Hudson G.G. I., Sawh H., 1981, Surface textures of first cycle quartz grains in a tropical marine environment, Tobago, West Indies, Symp. ‘Scanning Electron Microscope Application in Geology’, Arizona Stat. Univ., 121–129.
• Muthukrishnan N., 1993, A study of detrital minerals from the sediments of Gadilam River Basin, Tamilnadu, M.Phil. thesis, Tamil Univ., Thanjavur, 193 pp., (unpubl.).
• Pettijohn F. J., 1984, Sedimentary rocks, CBS Publ., New Delhi, 628 pp.
• Powers M.C., 1953, A new roundness scale for sedimentary particles, J. Sediment. Petrol., 23, 117–119.
• Rajamanickam G.V., Muthukrishnan N., 1996, A study on light minerals in the Gadilam River Basin, Tamilnadu, Proc. 9th Convention Indian Geol. Congr., G.V. Rajamanickam & O.P. Varma (eds.), 27–37.
• Rittenhouse G.R., 1943, Sedimentation near the Junction of the Maquoketa and Mississippi Rivers – a discussion, J. Sediment. Petrol., 13, 40–42.
• Setlow L.W., Karpovich S., 1972, Glacial microtextures on quartz and heavy mineral sand grains from the littoral environment, J. Sediment. Petrol., 42, 864–875.
• Udayaganesan P., 1993, A study of detrital minerals from the sediments of Vaippar basin, Tamilnadu, M.Phil. thesis, Tamil Univ., Thanjavur, 118 pp., (unpubl.).
• Wadell H., 1935, Volume, shape and roundness of rock particles, J. Geol., 43, 250–280.
• van der Plas L., 1968, Feldspars, Scient. Extr., 103, 671–672.
• Wentworth C.K., 1919, A laboratory and field study of cobble abrasion, J. Geol., 27, 507–521.