Major lineament mapping of structural controlled mineralization of Baryte and Asbestos mines around Pulivendla and Lingala mandals of YSR District, AP, India.

Abstract

Accurate geological and lineament mapping is critical task for fault and fracture recognition aided mineral exploration.  This study identified lineaments from satellite images, utilizing image processing techniques around Pulivendula and Lingala mandals of YSR District, Andhrapradesh, India, by enhancing the variations in spectral and spatial reflectivity.  In term of Topographic Lineaments are emphasized common surface expressions of tectonic fractures and faults in the bedrock.Most of the mineral resources of igneous origin can be identified through remotely sensed data by identifiying and mapping these lineaments. Knowledge of fault and fracture locations can prevent unsuitable site selection for mineral exploration.  Lineament patterns also give insight of mineral prapagation within earth’s surface of the region.Hence it is an important consideration for various data sets, including multispectral satellite imagery (IRS P6 LISS III) as well as geological data describing fractures, faults that were used to map and validate the lineament distribution in the study area.  Linear features were enhanced with tonal, topographic and textural changes by processing of the satellite imagery.  Lineaments were then extracted manually using ArcMap (ArcGIS 9.2 – ESRI) longer and shorter lineaments were identified,

digitized and stored in a geo-database together with attributes describing their length, orientation and other characteristics.  Lineament categories included barytes and asbestos mine, lineaments in their corresponding orientation used to characterize the lineament distribution in each remotely sensed data set.The primary lineament orientations from satellite imagery are trending north-east and southeast forming a synoptic “V” shape in the study area of pulivendula and Lingala mandals of YSR district, Andhrapradesh India.