Relative dating ppt

Source Hole, Flannery and Neely, Prehistory and Human Ecology Of the Deh Luran Plain An Early Village Sequence from Khuzistan, Iran. Whether your application is business, how-to, education, medicine, school, church, sales, marketing, online training or just for fun, Power is a great resource.

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Hot tip: Video ads won’t appear to registered users who are logged in. (No Transcript) 26Pottery types from Deh Luran, Iran. Power is a leading presentation/slideshow sharing website.

If, in the year AD 1600, you had asked an educated European how old the planet Earth was and to recount its history he would have said that it was about 6000 years old and that its ancient history was given by the biblical account in Genesis.

(See Map of Mesopotamia) Unfortunately this accolade ignores the contributions of the Chinese people and the Harappans of the Indus Valley, (Modern day Pakistan) who were equally "civilised" during this period practicing metallurgy (copper, bronze, lead, and tin) and urban planning, with civic buildings, baked brick houses, and water supply and drainage systems. Called Cuneiform Writing from the Latin "cuneus", meaning "wedge", it was developed as a vehicle for commercial accounting transactions and record keeping.

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To determine the relative age of different rocks, geologists start with the assumption that unless something has happened, in a sequence of sedimentary rock layers, the newer rock layers will be on top of older ones. This rule is common sense, but it serves as a powerful reference point.

Geologists draw on it and other basic principles ( to determine the relative ages of rocks or features such as faults.

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