GEOL 1020 Lecture Notes - Lecture 1: Impact Crater, Shocked Quartz, Paleontology
7 Dec 2017
School
Department
Course
Professor
Document Summary
The study of the earth"s composition, its structure, and the processes that shape the earth. High heat and/or pressure that transforms a rock without melting it. You identify a sandstone in an outcrop. You can get a sandstone in many different types of environments. - fossils, ripple marks/sedimentary structures, layering/or if there isn"t layering ( Older oceanic crust has all been subducted. Mariana trench - contains the deepest spot in the ocean. Challenger deep - 11,045 meters below sea level, deepest trench. No vestige of a beginning, no prospect of an end. " - james hutton, 1788, about uniformitarianism. Uniformitarianism present geological processes have been operating throughout earth(cid:1442)s history, and can be used to explain past geologic processes. (cid:1441)the present is the key to the past. (cid:1442) Mound shaped, finely-layered rock formed by communities of bacteria. Threadlike cyanobacteria grow upward through the trapped sediment. Stromatolites date back ~ 3. 5 billion years ago (archean)
