GLY-2250 Chapter Notes - Chapter 6: Histology, Till, Axial Tilt
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Upper portions include large bodies of chalk (creta)-- coccolithophores. Fossil succession revealed the relative ages of rocks. G. cuvier 1st to dete(cid:396)(cid:373)i(cid:374)e that spe(cid:272)ies had (cid:271)e(cid:272)o(cid:373)e e(cid:454)ti(cid:374)(cid:272)t du(cid:396)i(cid:374)g the (cid:272)ou(cid:396)se of ea(cid:396)th"s history cataclysmic environmental changes had affected history of life in the region did not come to conclusion that new species must have also arisen (by evolution) Geologic systems were founded in the nineteenth century. Geologic systems: bodies of rock divided by contained fossils of distinctive animal or plant life oldest fossil-rich systems are cambrian, and thus all rocks older than that are precambrian. Stratigraphy: study of stratified rocks, especially their geometric relations, compositions, origins, and age relations. Stratigraphic units: strata distinguished by physical, chemical, or paleontological properties. Correlation: procedure of demonstrating correspondence between geographically separated parts of a stratigraphic unit. Temporal correlation: widely spread bodies of rock are the same age. The rock record is divided into time-rock units and geologic time into time units.
