Reprint - Central Arid Zone Research Institute

significantly contribute in the rational settlement and land useplanning of the Nagaur tehsil of western Rajasthan.154 Vats, P.C. and Singh, S. (1989)Impact of geomorphology on spatial distribution and planning ofrural settlements in Barmer district, western Rajasthan. TheGeographical Observer. 26: 53-58In this paper the impact of geomorphology on spatial distributionand planning of rural settlements under different geomorphicsettings has been discussed. Keeping this fact in view, the study onthe evolution and spatial distribution of rural settlements inrelation to geomorphology and facets of Terrain by using remotesensing techniques was conducted in the Barmer district. Thefindings of this study on spatial distribution and planning of therural settlements are discussed in this paper. Based on the findingsof this study measures for proper planning and development of theexisting and new settlements in different landforms are suggestedby the authors.155 Vats, P.C., Singh, S., Ghose, B. and Kaith, D.S. (1976)Types, orientation and distribution of sand dunes in Bikanerdistrict. The Geographical Observer. 12: 69-75The present study reveals that there are five types of dunes andthey belong to two systems viz. old system and new system. Thedunes of old system are parabolic, longitudinal and transverse.These are well stabilised, yet possess a fine mantle of recent sanddeposition. Barchan and shrub coppice dunes belong to new dunesystem. These dunes are in active phase and their sand particles areloose. These dunes have been formed by the westerly and southwesterly winds and their axial direction is SW-NE.156 Viswanathan, T.V. (1962)Studies on the Pyroxene-hornblende andesite from Barmer district,Rajasthan. Indian Minerals. 16: 66On the basis of two types of zircon, the author has suggested thatthe andesite was formed by mixing of two types of magma.157 Viswanathan, T.V. (1962)Zircon studies of some high level granites from Barmer district,Rajasthan. Indian Minerals. 16: 66On the basis of morphology and other character study of 200 zirconcycles it is concluded that the zircon of the Barmer granitecrystallised under the same environment except that fromMungeria.