Surface Geology of uma oya project-srilanka

   :Purpose of the basic studies and its reportsThe basic studies for the feasibility design of the project consist of detailed geological sur-face mapping, cored exploratory boreholes, including water permeability tests of the bedrock and rock mechanics in-site and laboratory testsSince these site investigations can not be performed parallel and will have unlike durations, it is not possible to document all information and results in one report. Therefore a documentation concept is chosen as followingGeology of Sri LankaTectonic map of Sri Lanka with project areaThe centrally located Highland Complex (HC) is bound on ei-ther side by the Vijayan complex (VC) to the east and by the Wai complex (WC) to the northwest. … The Highland Com-plex is composed of supracrustal and metaigneous rocks. Most of the rocks in the complex have older model ages (2.0-3.4 billion years) than in the Wai and Vijayan complexes. The supracrustal rocks of the highland complex comprise shallow-water metasediments consisting of metaquartzites derived from sandstones; quartzo-feldspathic gneisses derived from arkose (type of sandstone); pelitic gneisses derived from greywacky and shale; marb