Lake Peigneur

Lake Peigneur

This diagram depicts where the man-made disaster of Lake Peigneur occured. Lake Peigneur is located in Louisiana.The lake was a 10-foot deep freshwater lake popular with sportsmen until an unusual man-made disaster on November 20, 1980, changed the structure of the lake and surrounding land. The Diamond Crystal Salt Company operated the Jefferson Island salt mine under the lake, while a Texaco oil rig drilled down from the surface of the lake searching for petroleum. Due to a miscalculation, the 14-inch drill bit entered the mine, starting a chain of events which turned the freshwater lake into a salt water lake with a deep hole.Since 1994 AGL Resources has been using Lake Peigneur’s underlying salt dome as a storage hub for pressurized natural gas.There is currently concern from local residents to the safety of storing the gas under the lake and nearby drilling operations.

Ocmulgee National Park: Indian Mounds

  While on our field trip to see the Indian Mounds at Ocmulgee National Park, we took a quick detour through the woods. Besides having a wonderful time by just simply walking through the woods and taking in the fresh air, I learned a lot about different types of soil layers. We stopped at a creek bank where we we able to see different layers of soil development. There were about 3 or 4 noticeably different soil types and colors in the embankment. 

  Seeing this small example of different soil layer developments, my mind immanently drifted to the sights I saw while visiting Providence Canyon in Lumpkin, Georgia. This link will take you to a wonderful site that has information and pictures of this site:  http://www.gastateparks.org/ProvidenceCanyon .The massive gullies, as deep as 150 feet, were caused by poor farming practices during the 1800s. You can see lots of different soil types within the walls of the canyon.

Providence Canyon--Lumpkin, Georgia

In class on September 29, 2011, Dr. Rood measured his normal blood sugar level at 9:25 a.m. After the initial measurement, he ate a Snickers Bar and quickly drank a can of Sprite. He then recorded his blood sugar every 5 minutes of class (for a total of 10 measurements).  The results are shown in the graph above.
What caused Dr.Rood's body to return to the baseline of normal glucose levels? Blood sugar levels are regulated by negative feedback in order to keep the body in homeostasis.

12 Soil Orders of the World

This is an awesome link to a website named "Dig It"! It includes pictures and explanations of the 12 different types of soil of the world.

http://forces.si.edu/soils/swf/soilorders.html

To me, the soil type known as Vertisol is very interresting. Vertisols are clayey soils that shrink and develop cracks when they dry and swell shut when they are moist. The location of these soils in the United States is primarily found in Texas where they are used to grow cotton.



This map shows where Vertisol soil can be found in the United States.