Cave Wall Media – Articles » Entries tagged with "Earth and Oceanographic Processes"

Plate Tectonics… A Spreading Zone… and a Slab of Chocolate

Plate Tectonics… A Spreading Zone… and a Slab of Chocolate

+1127 Here is an explanation of how plate tectonics in a spreading zone, moves…. using a slab of chocolate…. as you do…. and a bit of imagination. . The choc’ based explanation, may help visualise how the spreading process works and could help understand what can be seen on the geological map, shown below. A brief on plate tectonics general: Plate tectonics is the name given to a process that takes place all over the Earth surface crust. The … Read entire article »

Filed under: Earth and Oceanographic Processes

Isostatic changes… Sea level changes… and a Rice Pudding.

Isostatic changes… Sea level changes… and a Rice Pudding.

+1440 The planet Earth on which we stand, has a thin surface skin (lithosphere), which floats on top of a much thicker, semi-fluid, hot layer (asthenosphere). . . A home made rice pudding with a skin comes in useful to visualise this and can be used to demonstrate a much larger, real Earth occurrence. . . This real Earth occurrence is known as Isostatic Change, a vertical movement, both up and down, of the lithosphere. This can effect coastal communities by altering … Read entire article »

Filed under: Earth and Oceanographic Processes