EPSC 233 Lecture Notes - Lecture 6: Braided River, Meander, Paleosol
6 Nov 2018
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Document Summary
Ancient sand dunes are distinguished by the large cross-bed sets and bimodal. Carbonate platforms: broad region of shallow water dominated by carbonate sedimentation. Reefs are important site of carbonate sediment accumulation in the oceans (primarily barrier reefs) Limestome precipitation concentrated in tropics because calcium carbonate solubility is lower in warmer waters. Processes to remove co2 from seawater drive those waters towards carbonate precipitation. Preserved in the organic matter of sedimentary rocks that can be used indicators or specific groups or organisms. Overlap between biology, geology, ecology, paleogeography, geochemistry and molecular biology. Study of ancient life in the context of environment and evolution. Making measurements of various dimensions of innumerable fossil specimens, trying to make sense of the date through statistical analyses. Fossils: preserved remains or traces of organisms in rocks. Hard parts are more likely than soft tissues. Hermetic tomb that is immediately and permanently sealed off to oxygen.
