Refine your search
Collections
Co-Authors
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z All
Deva Varma, D.
- Distribution of Heavy Minerals in Nizampatnam-Lankavanidibba Coastal Sands, Andhra Pradesh, East Coast of India
Abstract Views :121 |
PDF Views:0
Authors
Affiliations
1 Department of Geology, Andhra University, Visakhapatnam - 530 003, IN
2 Department of Earth Sciences, Yogi Vemana University, Kadapa - 516 001, IN
1 Department of Geology, Andhra University, Visakhapatnam - 530 003, IN
2 Department of Earth Sciences, Yogi Vemana University, Kadapa - 516 001, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 79, No 4 (2012), Pagination: 411-418Abstract
Heavy mineral analysis was carried out for the beach and fore dune sediments along 60 transects of Nizampatnam-Lankavanidibba coastal area. The heavy mineral assemblage in this area with decreasing abundance of opaques (Ilmenite + magnetite, 47.67%), pyriboles (20.35%), garnets (3.66%), epidote (3.23%) and with less than 3.0% concentration of sillimanite, zircon, staurolite, kyanite, apatite, spinel, monazite, biotite, topaz, leucoxene and chlorite. The heavy mineral concentrations are high in the finer fractions i.e., +120 and +230 (ASTM) than the coarse fraction (+60) of sand. In the seven sectors, heavy mineral assemblage is same but their concentrations are different. The sectors nearer to the river mouth contain high concentration of high specific gravity heavy minerals (ilmenite and magnetite) than sectors away from the river mouth. The redistribution of heavy minerals is controlled by creek dynamics, longshore currents, size and specific gravity of the heavy minerals.Keywords
Heavy Minerals, Coastal Sands, Longshore Currents, Tidal Channels.
References
- APPAJEE, Y. and PRABHAKAR, D. (1985) Environmental analysis of the Holocene coastal sediments between Repalle and Nizampatnam, Andhra Pradesh. Indian Assoc. Sed., v.5, pp.49-57.
- APPAJEE, Y. (1994) Provenance studies of the sediments of Barrierbeach and beach dunes at Nizampatnam, East coast of India. Jour. Indian Acad. Geosci., v.37(1), pp.17-29.
- BRYAN, K.R., ROBINSON, A. and BRIGGS, R.M. (2007) Spacial and temporal variability of titanomagnetite placer deposits on a predominantly black sand beach. Marine Geol., v.236, pp.45-59.
- BUTT, T., RUSSEL, P. and TURNER, I. (2001) The influence of swash infiltration-exfiltration on beach face sediment transport: Onshore or offshore? Coastal Engg., v.42, pp.35-52.
- COOK, D.O. and GORSLINE, D.S. (1972) Field observations of sand transport by shoaling waves. Marine Geol., v.13, pp.31-55.
- ERGIN, M., KESKIN, S.,UMRON DOGAN.A., YUSUF KAAN, K. and ZEHRA.K. (2007) Grain size and heavy mineral distribution as related to hinterland and environmental conditions for modern beach sediments from the Gulf of Antalya and Finike, Eastern Mediterranean. Marine Geol., v.240, pp.185-196.
- FRIHY O.E. and DEWIDAR, K.M. (2003) Pattern of erosion/ sedimentation, heavy mineral concentration and grain size to interpret boundaries of littoral sub-cells of the Nile delta, Egypt. Marine Geol., v.199, pp.27-43.
- FRIHY, O.E. and KOMAR, P.D. (1993) Long-term shoreline changes and the concentration of heavy minerals in beach sands of the Nile delta, Egypt. Marine Geol. v.115, pp.253-261.
- FRIHY, O.E., LOFTY, M.F., and KOMAR, P.D. (1995) Spatial variations in heavy minerals and patterns of sediment sorting along the Nile delta, Egypt. Sed. Geol., v.97, pp.33-41.
- GALEHOUSE, J.S. (1969) Counting grain mounts number percentage vs number frequency. Jour. Sed. Petrol., v.39, pp.815-821.
- HEGDE,V.S., SHALINI, G. and GOSAVI KANCHANAGOURI, D. (2006) Provenance of heavy minerals with special reference to ilmenite of the Honnavar beach, Central west coast of India. Curr. Sci., v.91, pp.644-648.
- KOMAR, P.O. and WANG, C. (1984) Processes of selective grain transport and the formation of placers on beaches. Jour. Geol., v.92, pp.637-655.
- KRISHNA RAO, B., RAMAIAH, J.S., MURTHY, P.B. and SWAMY, A.S.R. (1989) Modern barrier system on the right bank of the Krishna delta. Indian Jour. Mar. Sci., v.18, pp.283-286.
- LI, M.Z. and KOMAR, P.D. (1992) Longshore grain sorting and beach placer formation adjacent to the Columbia River. Jour. Sed. Petrol., v.2, pp.429-441.
- NAGESWARA RAO, J. (1988) Geomorphology, Quaternary geology and neotectonic structure of Krishna delta, East Coast, Andhra Pradesh, Geol. Surv. Spec Publ. No.11, v.II, pp.317-322.
- NAGESWARA RAO, K. and VAIDYANADHAN, R. (1978) Geomorphic features of the Krishna River delta and its evolution. Proc. Symp. on Morphology and Evolution of Landforms, University of Delhi, pp.120-130.
- NAGESWARA RAO, P.V, SURYAM, R.K and RANGA RAO, V. (2005) Depositional environment inferred from grain size parameters of the beach sediments between False Devi Point to Kottapatnam, Andhra Pradesh Coast. Jour. Geol. Soc. India, v.65, pp.317-324.
- RAO, G.D., SETTY, B.K. and RAMINAIDU, C. H. (1989) Heavy mineral content and textual characterstics of coastal sands in the Krishna-Godavari, Gostani-Champavathi and Pennar River deltas of Andhra Pradesh, India: A comparative study. Exploration and Research for Atomic Minerals, v.2, pp.247-254.
- REDDY, B.S.R., VENKATA REDDY, G. and DURGAPRASAD, N. (1979) wave conditions and wave Induced longshore currents in the nearshore zone off Krishnapatnam. Indian Jour. Mar. Sci., v.8, pp.61-67.
- REID, I. and FROSTIC, L.E. (1985) Role of settling entrainment and dispersive equivalence and of interstice trapping in placer formation. Jour. Geol. Soc., London, v.142, pp.739-746.
- SELLY, R.C. (1976) An introduction to sedimentology. Academic Press, London.
- SETTY, B.K. and DHANA RAJU, R. (1988) Magnetite content as a basis to estimate other major heavy mineral content in the sand deposits along Nizampatnam coast, Guntur dist., Andhra Pradesh. Jour. Geol. Soc. India, v.31, pp.491.
- SREENIVASA RAO, P., SATYANARAYANA, G. and SWAMY, A.S.R. (1995) Heavy minerals of modern and relict sediments of Nizampatnam Bay, East Coast of India. Indian Jour. Marine Sci., v.24, pp.166-170.
- SWAMY, A.S.R. and KRISHNA RAO, B. (1987) Coastal processes at the Nizampatnam bay, East Coast of India. In: Xix General Assembly; International Association for Physical Sciences of the Oceans. Int. Union Geod. Geophys., v.17, 332p.
- VARADARAJULU, R., HARIKRISHNA, M., CHITTIBABU, P. and CHAKRAVARTHY, P. (1985) Geomophology of coastal zone around Krishna river confluence. Mahasagar Bull. Nat. Inst. Oceanography, v.18, pp.265-272.
- VEERANARAYANA, B., SATYANARAYANA REDDY, K., DHANAMJAYA RAO, E.N., DEVA VARMA. D. and MURTHY. R.G.K. (2004) Nearshore distribution of heavy mineral concentration along the Nizampatnam-Paresavanipalem Bay, A.P., East Coast of India, Environ. Geochem., v.7, pp.117-122.
- YOUNG, E. J. (1966) A critique of methods for comparing heavy mineral studies. Jour. Sed. Res., v.36, pp.57-65.