Book Description: A complete, practical discussion of subsurface geological methods - with special emphasis on petroleum exploration. *presents the principles necessary for the successful search and development of oil and gas deposits. *focuses on a variety of subsurface mapping and cross section techniques applicable in the four major petroleum related tectonic settings -- extensional, compressional, diapiric salt, and wrench tectonics. *considers well log geophysical techniques. *discusses structural balancing. *features numerous real-world examples.