GEOL 1003 : Chapter 15 Geology
Document Summary
Chapter 15 the late paleozoic world: defining the geologic time periods (carboniferous, permian, biota (marine, terrestrial, me, geology. Continental configuration, orogenic events, geologic deposits: chemical reservoirs. Ocean chemistry, climate trends, major eustatic change, isotopic trends. End is marked by the largest mass extinction (me) of earth"s history: end of ancient life , carboniferous period (~60 million years) Mississippian: extensive limestone deposition (high sea level, renewed marine diversification, glaciation (marine mass extinction) Pennsylvanian: early glaciation, transgression, high-intervariability results in cyclothem formation, extensive coal formation from burial of spore trees/plants in swamps, reptiles evolve from amphibians, onset of alleghenian orogeny, permian period (~48 million years) Continued alleghenian orogeny: appalachians and ouachitas. Dry climate: reduction in coal swamps. Largest mass extinction of phanerozoic: renewed evolutionary radiation. Sharks an ray-fin bony fish: outcompete armored (heavy) fish, swimming fast seemed to become a survival necessity, brachiopods- productids anchored and protected selves with spines; most successful group, bryozoans- important contributor to mississippian limestones.
