Science reading the earth sediment layers

READING HISTORY THROUGH LAYERS OF SEDIMENT

How the earth tells a story

What are Sedimentary Rocks?

Remember the 3 types of rocks?... Metamorphic Igneous Sedimentary

Eroded debris is transported by rivers and deposited as new layers of sedimentary rock. A series of sedimentary rock layers may be thousands of meters thick

Reading Sedimentary DepositsTo interpret the sedimentary record correctly, we must first understand something about modern sedimentary systems.

1) the sources of sediment

2) transportation pathways

3) places where sediment is accumulating today, such as deltas, beaches, and rivers.

The Earths Story

Reading the Story From the composition of sediment (what it is made up of) we can read exactly what happened on earth at that time. This can include:- Animals- Temperate Change- Natural Disasters- PeopleLets have a look at the Grand Canyon is USA.

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HOMEWORK

Draw and Label a diagram showing

how sediment

layers form.