Authors : Yogita A Patil, Abhijit J. Patil, H. S. Patode and S. N. Savant
Page Nos : 286-288
Description :
The study area is hilly and is situated in Kolhapur district, Maharashtra. The area is covered by basaltic lava flows of Upper Cretaceous to Lower Eocene age. Deccan basalts are made up of several lava flows. The thickness of an individual flow ranging from 7m to as much as 40 m. columnar jointing is seen in some compact basalt flow in study area ( “aa” type ). Hexagonal or polygonal nearly vertical or slightly inclined columns are developed. Some of the basaltic flows exhibit cooling fractures due to shrinkage. At the height of 879 m. from MSL columnar joints in Basalt are observed at Jyotiba area while at the height of 881 m. from MSL at Tumjai area. The geological field work is carried out and the study of columnar joints developed in basaltic flows in above area is done.
Keywords- Deccan basalts, columnar joints, cooling frapctures, shrinkage
