1. WORK IN FOURTH YEAR 2. Abrasion – the effect of erosion on rock, where rock fragments carried by the seas scrape and grind away at a cliff face Arch – a rocky opening…
1.The Sea Creator and Destroyer2. The action of the sea The sea is constantly changing the shape of our coastline. This is happening because waves, like rivers, erode, transport,…
Slide 1 THE INEXISTENT ISLAND! According to the testimony of the fossils we know that from the Permian, 260 milion years ago, to the Upper Miocene, 6.5 milion years ago,…
Harry Williams, Historical Geology * PENNSYLVANIAN - PERMIAN. 1. Paleogeography The Pennsylvanian opened with the Kaskaskia Regression, which left a widespread erosional…