GEOL 1001 : Geology Midterm Study Guide
Document Summary
4. 57 ga: the primary difference between physical and historical geology is that: Physical geology is about the processes that have shaped earth over time and. Historical geology is about how we can reconstruct the record of change on earth. Catastrophism was consistent with ideas of rapid change and a young earth, while. Definite chemical (elemental composition: definition of a rock: A solid mass of minerals or mineral-like matter that occurs naturally: decompression melting occurs because: The melting temperature of hot material is lowered as the confining pressure decreases: sedimentary rocks affect our civilization because: They contain resources such as water, oil, gas, uranium, iron, and many others: a basalt dike that cuts through a sandstone unit is younger than the sandstone unit, half-life of carbon-14~6000 years. A sample of charcoal formed, by the burning of living wood, 15,000 years ago. In dry areas, annual evaporation exceeds possible precipitation. Most deserts distributed around 20-30 lats on earth.
