Reprint - Central Arid Zone Research Institute

Studies on the relations of debris size and slope with distance alongtwo rhyolite pediments at Kui Jodha in Jodhpur district reveals thatthe variation in lithological character has significant control overthe rate of diminution of debris size. The more weatherable the rockis, the less significant is the relation of the distribution of debrisproduced with the distance along the pediment. Slope angle does notchange appreciably with distance. Since the rate of reduction indebris size is faster along the pediments than the rate of change inslope, it may be inferred that the progressive diminution of debrissize may have some control on the flattening of slope towards thedistal end.109 Khanna, S.S., Ahuja, K.L., Manchanda, M.L., Sangwan, B.S.and Goyal, V.P. (1977)Soil landscape relationship of the dune infected precambrianpedeplane area in south-western part of Haryana. Annals of AridZone. 16: 201-212Soil survey of dune infected precambrian pedeplane in south westHaryana was carried out covering an area of 33,000 hectares. Basedon this survey landscape-soil relationship has been established.Four geomorphic units were identified in the area, i.e. Dunes(unstabilised) severely eroded, non-calcareous, TypicTorripsamments; Dunes (stabilised)-moderately eroded, noncalcareous,Typic Torripsamments; Plain-coarse loamy, noncalcareous,Arenic Camborthids; and Depression with coarse loamy,calcareous, Typic Paleorthids. Fifty five per cent of the area wascovered by sand dunes stabilised; 25% by shifting sand dunes, 11%by depression and 9% by the plain.110 Mehta, K.M. and Shankarnarayan, H.S. (1961)Rating of land for irrigation Jawai project area. Journal of theIndian Society of Soil Science. 9: 71-76Numerical rating of soils of Jawai project area in Rajasthan hasbeen presented. This is based on the method proposed earlier by theauthors modification to express actual condition more satisfactorilyand suggesting to make the method widely applicable. The area hasbeen divided into four irrigability classes. Numerical rating ofprofiles under each class is exemplified.111 Murthy, M.V.N. (1962)Significance of the ring pattern of Siwana granite bosses in westernRajasthan. Indian Minerals. 16: 297-298The author has compared this region with northern Nigeria and onanalogy basis has said that Siwana granite has ring structure.