GSC 111 : Jurassic Period GSC (3).docx

• School: University of Miami
• Department: Geological Sciences
• Course: GSC 111
• Professor: Glen Peterson

Document Summary

* the name jurassic comes from jura, a region of the alps where rocks of this system are well exposed. *the jurassic period is very well zoned (paleontologically subdivided) with approximately 60 recognized ammonoid zones (resolving the jurassic into ~1 million year time increments) [jury. Jurassic rocks are basically unknown at the surface in eastern north america. Instead, they are deeply buried along the margin (and are only known from deep drilling by oil companies) In western north america, jurassic rocks make up some of the most colorful formations known from national parks and monuments. *triassic basins filled with continental material as the ocean builds up, it builds up & out. Reef systems build up on margin of east coast north america (coral + other stuff) [east coast- *major event in the oceans the evolution of the first representatives of the major modern groups of calcareous nanoplankton [calcareous nanoplankton] Button like plates pushed to surface (plates are species specific)