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The litho-units of the area between Chawand to Kotra across the Aravalli-Delhi Fold Belt are referable to Bhilwara, Aravalli and and Delhi Supergroups. Earlier workers considered the sequence as progressively younger toward west across the Avavalli Orographic axis. Two-dimensional trend mapping of the planar tectonic anisotropy was carried out to map lineaments from landsat TM Image. Ground checks of the lineament along Chawand-Kotra section suggest that lineaments are tectonic dislocations, morphotectonically controlled by thrusts and ductile shears within the Aravalli-Delhi Fold Belt. The recognition of thrust bounded litho-tectonic units from interpretation of satellite remotely sensed data may necessitate reassessment of the Precambrian lithostraligraphy of the Aravalli and Delhi supergroups in the study area. The paper reports thrust tectonics from Aravalli-Delhi Fold Bell. The Antalia Schuppean Belt is possible duplex; imbricate thrusts are connected with base thrust and continuity with roof thrust has been punctuated by transverse faulting and erosion. 相似文献
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The basic geomorphic units in Parsoli surface of the Vindhyan Basin of Rajasthan have been photo-geomorphologically mapped. The paper presents morphology and controls of landscape genesis in structurally deformed cratonic regime. 相似文献
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Iqbaluddin 《Tectonophysics》1979,60(3-4):319-320
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Variable tonal densities, erosional resistance, drainage pattern, density and channel profile together with landuse pattern, vegetation pattern and structural expressions have been used as recognition elements for the lithological mapping of the Vindhyan Basin, Rajas than. Local relationship of superposition, spatial continuity and ground truth have been used for establishing lithostratigraphy in the Parsoli-Bichor syncline. The recognition elements established may serve as guide for rapid lithological mapping through extrapolation techniques. 相似文献
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The morphotectonics of Zagros Structural Belt (ZSB) of SW Iran has been controlled by collision tectonics of the Arabian and Iranian plates. Morphotectonically ZSB has been distinguished into four lithotectonics units namely, Imbricate Zone (IZ), Sanandaj-Sirjan Zone (SSZ), Zagros Folded Belt (ZFB) and Molasses Cover Sequence (MCS). The collision generated morphogeny and vertical tectonics in ZSB. The opening of the Red Sea has contributed to vertical tectonics @ 1 mm/year, and during the last 4–5 million years a relief of about 4 km has been generated in ZSB which resulted in development of erosional cycles. The Sanandaj-Sirjan Zone (SSZ) and Imbricate Zone (IZ) became positive tectonic topography with opening of Red Sea. The exogenic geomorphic processes resulted in the erosion and SSZ was exhumed to lower level than IZ. The ZFB and MCS underwent vertical tectonics @ 1 mm/year. The Neo-tectonism is expressed as anomalous drainage and compressed meanders in MCS. The humid cycles (?) during the Quaternary period resulted in fluvial erosion and cuesta, hogbacks, structural and erosional hills and valleys were carved in ZSB in Iran. The NW-SE tectonic trend of ZFB has determined the morphotectonics and the geomorphic grain of ZSB of in SW Iran. 相似文献
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Iqbaluddin Saif Ud Din Akram Javed 《Journal of the Indian Society of Remote Sensing》1997,25(3):177-186
The morphometric analysis of the surface drainage has been carried out for the four micro-watersheds of Bharatpur district, Rajasthan to quantify the drainage morphometry of the district. The morphochronology of landseape evolution has been described. Banaganga represents anomalous drainage, which causes large scale inundation during rainy season. The strain of post-collision Himalayan tectonics resulted in slope mulation in Bharatpur district which changed slope from westerly to easterly. The landform characteristics of Bharatpur district have been arehieved at the National Informatics Center, District Data Base, Bharatpur is alpha numeric mode. 相似文献
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‘Green Revolution’ was adopted as National Agricultural Policy by the Government of India to meet the requirements for food grain self-sufficiency. Improved seeds, fertilizers and irrigation were provided as science and technology (S&T) inputs to the soil resource base of the country. Land use changes in order to increase the area of land under cultivation have resulted in sectoral imbalances. The introduction of irrigation, fertilizers and new seed varieties using the district as a unit of agricultural input and management, without consideration of moisture and pedogenetic requirements at the micro-level, have resulted in ecological imbalances and environmental degradation in some parts of the district. Intensive irrigation has resulted in water mining in some blocks, and over a period of years the upper aquifer has been lost and in parts of the Aligarh district water-logging and salinity development has taken place.This paper presents the concept of spatial information systems for sustainable agriculture to eliminate the overdose effect of S&T inputs in a land system such as the fragile ecosystem at the semi-arid border in India.The present study has attempted to integrate the natural resource endowments of lithology, soil, ground-water and geomorphology into terrain mapping units (TMUs). The geological, geomorphological and soil maps were generated using remotely sensed data. For ground-water, well logging was carried out and secondary data regarding depth to water-table were collated. The spatial modelling for depth to water-table was carried out using SURFER software. The files on geology, geomorphology, soil and depth to water-table were digitized and integrated to generate an illuminated model characterized by areas of homogeneity in terms of geology, geomorphology, soil and ground-water conditions to map the TMUs. Intergraph's Modular GIS Environment (MGE) software was used to integrate the multiple data base.For sustainable agriculture the natural boundaries represented by TMUs will be more appropriate as spatial units for the application of agricultural inputs and management practices for the land system, rather than villages, blocks and districts which have cultural boundaries. The methodology proposed will be useful for all ecosystems in semi-arid and arid regions. 相似文献
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