Joint analysis and Economic Significance of Lakhra formation in the Vicinity of Khanu Brohi, Jamshoro, Sindh

Abstract

The detailed joint analysis and economical importance of Lakhra Formation is carried out from the study area which belongs to the southern part of Lower Indus basin and lies in the east of Kirthar range. The present work is carried out from the nine locations existing in the exposed rocks of Lakhra Formation, in the vicinity of Khanu Brohi district Jamshoro, Sindh, Pakistan. The observed joints were analyzed by using the structural techniques and rose diagrams for the purpose to determine the maximum force direction exerted in the formation of joints. In addition to that the entire structure of the studied area was also being focused which is southern most part of the Lakhra Anticline. The study area represents one major fault in the Lakhra Formation which is a thrust fault and is associated with minor faults. The area of research also displays joints of different types mostly they are oblique, square, parallel and horizontal joints. The application of structural data through rose diagrams in the studied area shows that the maximum force for the development of the major structures and joints has been generated from the NW direction