GL101 Lecture Notes - Lecture 1: Geologic Time Scale, Plate Tectonics, Historical Geography
Document Summary
Lab 1: week of 21st september (requires lab manual) Physical geography earth materials; processes operating on and beneath the surface. Historical geography understanding the origin of earth and its development through time. Relationships between people and the natural environment include: natural hazards, resources, world population, and environment. Catastrophism earth"s landscapes were formed by sudden disasters. Uniformitarianism the present is the key to the past . Proposed in the 18th century by james hutton, and states that the processes we observe on our planet today have been shaping our planet throughout time. Hutton knew earth must be very old. Before the discovery of radioactivity, it was difficult to determine the age of earth. Current age-dating techniques are constantly being refined. Relative dating - events are palced in proper sequence or order without knowing their age. Law of superposition younger rock layers are deposited over older rock layers. Principle of fossil succession fossil organisms succeed each other in a determinable order.
