ANTH 1 Lecture Notes - Lecture 26: Ground Pressure, Sedimentary Rock, Soil Ph
13 Oct 2020
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Document Summary
Remains of organisms that have been wholly or partially transformed into stone through a long process of chemical replacement. 99% of the fossil record is bones and teeth taphonomy. Study of what happens to an organism"s remains. Hominin dies on shore > soft-tissue decay, footprints left in mud > water level rises, and lake sediments settle covering bones and footprints > fossil is embedded in a geologic stratum > erosion exposes/reveals fossil skeleton and footprints. Buried animal remains within the ash limitations of the fossil record. Not all fossil-bearing rocks have been discovered. Rock sequences containing fossils not complete in all places. Age of one object/event with respect to another. As time goes on, newest rocks form at the top while oldest rocks remain at the bottom. Disintegrate and form isotopic variant of the same or another element. Rate of decay constant and measured in half lives.
