CA PG State Specific Exam Study Guide with Complete Solutions Latest Update

CA PG State Specific Exam Study Guide with Complete Solutions Latest Update Anorthosite - Correct Answer A plutonic igneous rock composed almost entirely of plagioclase feldspar, found in the San Gabriel Mountains and dated at 1.022 billion years. Connate Water - Correct Answer Water trapped in a formation at the time of deposition Franciscan Formation or Group - Correct Answer A heterogeneous unit of sedimentary and volcanic rocks consisting of greywacke and interbedded shale, minor amounts of chert, limestone, greenstone, and metamorphic rocks of greenschist and blueschist facies. The formation may be 50,000 feet thick. It is one of the basement types in the Coast Ranges. Great Valley Sequence - Correct Answer Shallow self to submarine fan deposits of sandstone, shale, siltstone, and minor conglomerate and limestone of Late Jurassic to Late Cretaceous age. These deposits, attaining a maximum thickness of approximately 80,000 ft, were thrust over the Coast Range ophiolite above the Franciscan formation. Lake Corcoran - Correct Answer A freshwater lake that covered much of the western San Joaquin Valley about 600,000 years ago (Late Pleistocene). Freshwater deposits lake clays, volcanic ash, and diatomite of Corcoran Clay member of Tulare formation. Los Angeles Basin - Correct Answer A large downwarped basin formed in Late Tertiary that received thousands of feet of marine sediments. The basin produces petroleum in prolific quantities. Located in the Peninsular Ranges in southwest tip of CA Ophiolite - Correct Answer an igneous rock consisting largely of serpentine, believed to have been formed from the submarine eruption of oceanic crustal and upper mantle material. Monterey Formation - Correct Answer A widespread Miocene marine formation consisting of siliceous shales and cherts. Silica was deposisted as diatomites and silicic ash beds. Phosphates were also deposited in the formation. The Monterey Formation is the most likely source of much of the petroleum and natural as in the Transverse Ranges Province. Overdraft - Co