Dashiell Longe Geology 1010 Summary of Lab assignment #1 10/26/2010 Summary The first part of the lab assignment was to choose a depositional environment for the facies descriptions a through A-H by looking at the charts of both Clastic and Carbonate dominated shorelines. Once these depositional environments were located and placed on the blank lines next to the descriptions I was able to draw the lines to separate the representative rock samples in each facies map. 1. Facies Map One- From left to right: the beach stand was the first depositional environment and a shelf represented both the second and third. 2. Facies Map Two- From left to right: the alluvial fan made up both the first and second depositional environments and those led into a river channel making up the third. Then on either side of the river channel was an alluvial Plain. 3. Facies Map Three- From left to right: a river channel ran through the majority of this map with an alluvial plain on either side. Then about three-quarters across the map was a beach strand. After the beach stand there was a shelf with a delta front fanning out in the center of it right after the river channel. 4. Facies map Four- from the upper left corner to the lower right corner: the alluvial fan made up both the first and second depositional environments followed by a river channel with and alluvial plain on either side of it. Then a beach strand separated the alluvial fan from the shelf. The river channel flowed through the beach strand and turned into a delta complex and then a delta front. The shelf mention earlier made up the last two depositional environments. The last exercise was to choose a basin interpretation and whether or not transgression or regression had occurred from one depositional environment to the next in a cross section of a carbonate dominated shoreline.