Geochemistry of the Panjal Traps of Mount Kayol, Lidderwat, Pahalgam, Kashmir

Authors

  • Department of Geology, Aligarh Muslim University, Aligarh
  • Department of Geology, Aligarh Muslim University, Aligarh

Abstract

Chemical analysis of 62 rock samples representing 24 flows of the Panjal Traps on Mount Kayol in Lidder Valley area do not show any systematic variation of the various oxides from the base to the top. The plots on MgO-Al/Si diagram of Murata, and Fe2O3/FeO ratio indicate that the rocks are of tholeiitic lineage. However, the points fall within the fields of alkali-olivine basalt and high-alumina basalt on the alkali-silica diagram of Kuno. This is interpreted to be due to alkali metasomatism. The addition of alkali is probably responsible for the shift of the points to the alkali-olivine basalt field on the alkali-silica diagram.

The Solidification Index (MgO í— 100/MgO+Fe2O3+FeO+Na2O+K2O) lies within the range of basalt and basaltic andesite of 'pigeonite rock series'.

Downloads

Download data is not yet available.

Issue

Section

Research Papers

Published

1978-09-01

How to Cite

Bhat, M. I., & Zainuddin, S. M. (1978). Geochemistry of the Panjal Traps of Mount Kayol, Lidderwat, Pahalgam, Kashmir. Journal of Geological Society of India, 19(9), 403–410. Retrieved from https://geosocindia.com/index.php/jgsi/article/view/64352

References

GANJU, P. N., (1943) The Panjal Traps; acid and basic volcanic rocks: Proc, Ind. Acad. Sci.Sect. B, 18; pp. 125-31.

JOLLY, T. W. and SMITH, R. E., (1973) Degradation and metamorphic differentiation of Keweenawan Tholeiitic lavas of Northern Michigan, U.S.A.: Jour. Petrol., v, 13; pp. 273-309.

KUNO, H., (1950) Petrology of Hakone Volcano and adjacent areas: Amer. Jour. Sci., 5th Ser., v, 25; pp. 239-256.

KUNO, H., (1968) Differentiation of Basalt Magmas: in Basalts: The Poldervaart Treatise on Rocks of Basaltic Composition, v. II; Interscience, pp. 633-688.

KUNO, H., YAMESAK, R., LIDAC, K. and NAGESHIMA, K., (1957) Differentiation of Hawaiian magma: Japan Jour. Geol, and Geog., v, 28; pp. 179-218.

MIDDLEMISS, C. S., (1910) A revision of the Silurian-Trias sequence in Kashmir: Palaeont, Ind., v. 29(1); pp. 1-79.

MURATA, K. J., (1960) A new method of plotting chemical analysis of basaltic rocks: Amer, Jour. Sci., v, 258-A; pp. 247-252.

OSBORN, E. P., (1959) Role of oxygen pressure in the crystallization and differentiation of basaltic magma: Amer, Jour. Sci., v. 258; pp. 668-84.

SHARMA, T. R. and GUPTA, K. R., (1972) On the Panjal Traps of Thanamandi area, Rajouri district, J. & K.: Indian Sci. Congo Assoc. 59th Sess., Part III.

SHAPIRO, L. and BRANNOCK, W. W., (1962) Rapid analysis of silicate rocks. U.S. Geol, Surv: Bull., v. 1144-A, pp. 1-56.

SUGIMURA, A., (1959) Geographische Verteilung der Charakterstendenzen des Magmas in Japan: Volcanology. Soc. Japan Bull., ser. 2, 4; pp. 77-103.

SUGIMURA, A., (1960) Zonal arrangement of some geophysical and petrological features in Japan and its environs: Univ. Tokyo Jour. Fac. Sct., sect. 2, 12; pp. 133-153.

WAKHALOO, S. N., (1969) The occurrence of acid differentiates in the Panjal Traps of Kashmir (abstr.). Proc. Ind. Sci. Congo Assoc., 56th sess., Part 3; pp. 144.