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Everything around us is made of chemical compounds that have testable and identifying characteristics, allowing them to be classified, and their age determined.

This also applies to rocks, minerals, and derivative materials (such as sediments and soil).

The chemical composition of Earth's crust has similarities with other stony planets, with silicate-rich rocks being dominant in most locations on the surface.

In addition, basic geologic principles can be applied to resolving the order of events leading to the formation of rocks and landscape features. Cross Sections - interpretations of vertical views of geologic features below the surface.

In 1946, Willard Libby proposed an innovative method for dating organic materials by measuring their content of carbon-14, a newly discovered radioactive isotope of carbon.

Korff predicted that the reaction between these neutrons and nitrogen-14, which predominates in the atmosphere, would produce carbon-14, also called radiocarbon.In 1946, Libby proposed this groundbreaking idea in the journal Physical Review.Purpose: to establish the nature and rate of landscape evolution by determining the relative or absolute times when soil or rock surfaces where exposed by erosion, deglaciation or tectonism; constructed by deposition or tectonism; or exposed at the surface prior to burial by sediments or extrusive rock.This chapter is an introduction to rocks and minerals, and the rock cycle.Basic chemistry is important to all sciences, especially geology!

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