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Age of Earth Part 1

Horizontales
Igneous rock forming above ground
Plants or animals trapped in layers of sed. rock that help geologists date the rock.
Number of years since a rock formed
The concept that geologic processes that happen today also happened millions of years ago.
The process in which rocks slowly change from one type to another
A break in the earths crust
A rock that changes after heat and pressure
The study of the earth
Verticales
When water, wind or ice break down rock and carry pieces away.
a rock that forms from molten lava
Igneous rock forming underground
The age of a rock based on those around it
The concept that rocks on the bottom of layers are older than those on top.
A gap in geologic record, a layer of rock lost to erosion
A type of rock with many layeyrs