1. Drill Core Notes

2. What are we looking for?
Fossils in the earth that have been imprinted into sedimentary rock.
Think superposition
Layers closer to the bottom are older, but how do we know if sometimes we have intrusions or fissures?
Did some organisms exist at different times?

3. What is a Drill core
Scientists drill into the earth collecting samples about as big as your hand.
A vertical circle cut of rock, deep from the earth.

4. Why do we drill for cores
The samples contain fossils and ancient biomolecules only found in those time periods.
Ancient biomolecules are used for fossil dating, climate and atmospheric readings

5. But what about superposition and Intrusions?
Long drill cores are collected
The samples are tested for Biomolecules
Some molecules are only found in certain periods

6. Take 10 more Notes (Minimum)