Do geologists use radiometric dating online dating in egypt


30-Jun-2017 15:43

In no way are they meant to imply there are no exceptions.For example, the principle of superposition is based, fundamentally, on gravity.Fundamental to stratigraphy are a set of simple principles, based on elementary geometry, empirical observation of the way these rocks are deposited today, and gravity.Most of these principles were formally proposed by Nicolaus Steno (Niels Steensen, Danish), in 1669, although some have an even older heritage that extends as far back as the authors of the Bible.A few principles were recognized and specified later.

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This document is partly based on a prior posting composed in reply to Ted Holden.

In this situation, the cave contents are younger than both the bedrock below the cave and the suspended roof above.