EPSC 445 Lecture Notes - Lecture 5: Gypsum, Sylvite, Molar Volume
13 Feb 2015
School
Department
Course
Professor
Document Summary
Cora reefs form close to sea water surface, reef stick out of sea water, reef at sea water interface. Sediments facies (back reef sedinemnt) besides reef to topographic high. In backreef, evaporate sea water then you will see calcium carbonate, gypsum, halite, silvite: first mineral to come out is calcite (carbonate precipitation, next is gypsum ( has to do with solubility, halite, sylvite (most soluble) What we expect in mud, a lot of carbonate and gypsum. Forereet: build up deep sed basins, dominated by shales. Back reef facies: sed to high temperature then gypsum in anhydrite form, reef, sedimentary basins. Take limestone of pure calcium carbonate and replace by dolomite, i create space: oil tar seeping out of environment, you find mvt deposit where petro geologist look for petro\, evidence of tarry material associated with mvt type deposit. Cross section thru the pine point deposit: muscate formation.
