Dating metamorphic rocks
Dating metamorphic rocks - Dating free online swinger
Sr) was the first widely used dating system that utilized the isochron method.
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Finding the oldest rocks in the world is a harder task than it might seem.
Earth's crust is a dynamic system and is always in motion, so rocks are continually being moved around, created and melted down in the great geological recycling program.
Geologists categorize rocks into three basic types, depending on their origin.
Igneous rocks are formed by the cooling and solidification of magma (molten rock in Earth's crust ) on or near the surface.
As a liquid rock cools, first one mineral and then another achieves saturation and precipitates, each extracting specific elements in the process.