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![]() See how different Earth had looked India was down at Antarctica |
Geology - Earth scienceFear not - just be prepared |
Why do continents move? Why do mountains exist? Why do we have volcanoes? Why are volcanoes not everywhere? Why do we have earth quakes? The name for the science of Geologycomes from theGreek language: γη, ge, "Earth" and λόγος, logos, "speech" So Geology is "talking about Earth" A nice definition of Geology is: Geology is a science that deals with the history of the Earth as recorded in rocks Geological forces have determined the look of our Earth ![]() |
Pangaea - there was a time when continents were together ~270 million years ago Later the continents moved again in different directions Look were India was at that time Or Australia |
Earth's surface consists of many continental and oceanic plates moving all the time causing earthquakes The area of today's southern United States had two huge mountain ranges, the Ouachita Mountains and the Appalachian mountains. They were pushed up by the African plate pushing against the North American plate. Florida was once part of Africa. During the Triassic Period about 240 million years ago, the continental plates of North and South America and Africa were together and started drifting apart. |
The Andes mountain range is the longest mountain range on Earth The Himalayas were built when India was crashing into Asia about 30 million years ago, pushing up the highest mountains on Earth |
Understand Earth - update your geology knowledge Continental plates change Earth's surface |
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