ISB 200 Study Guide - Midterm Guide: Brachial Artery, Chloroplast, Gas Giant
20 Sep 2016
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Are a representation of a certain amount of time. Form in layers, no matter how they form. No way of knowing how fast rocks can accumulate. Past lives that are embedded in the rocks. A section is a sequence of rock layers. Erosion, river cutting are time wearing away the surface. Can"t tell when volcanoes will erupt even if the last episode wa. 100 sq. mile, blew all the trees down. Lake is 250 feet higher than before the volcano. All the sediment from the mountain was blown into the lake. You want to start classifying the layers of rocks with time. Classifying the rocks b/w different places corresponding with time. We can correlate rocks into two sections (a, b) If they are relatively close to one another in time, can match up the s. Works well in a limited geographic context, and fails as distance incre was 200 years ago he sequence of rocks increases.
