GEOB 103 Study Guide - Final Guide: Tuff, Regelation, Subduction
8 Apr 2016
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Document Summary
1 geomorphology: study of the processes shaping earth"s surface, and the landforms and deposits that they produce. Geomorphology draws on four disciplines: physics, chemistry, biology, geology geosphere: rocks comprising earth"s crust and global tectonic system that gets rocks sculpted into topography hydrosphere: oceans, atmosphere, surface and subsurface waters that erode, transport and deposit sediment. Difference between relative dating methods and numerical dating methods: Relative dating methods are used to order landscapes, deposits, and geologic events according to their relative ages, whereas numeric dating methods provide estimates of chronologic age. It is related to the duration of time since the rock surface was last fractured or abraded. Over decades to centuries, the maximum diameter of lichens growing on rock surfaces (lichenometry) increases with surface age. It can not only tell us the age of the tree, but also if the conditions were favourable (eg. fire, flooding).
