Geology-Mindmap

1. Intrusive
   1. Cooling of magma underground slowly
2. Extrusive
   1. Cooling of Magma in the air outside of a volcano quickley

1. Has Holes

1. From over a long period of time

1. Forming over a short period of time

1. Nonconformity
   1. Where metamorphic rocks get piled with layers of sediment
2. Disconformity
   1. Sequence of sedimentary rocks which form an intrusion over it with more sediments
3. Angular Unconformity
   1. Where a tilted layer of sedimentary rock get piled with more sedimentary rocks

1. A solid, liquid or gaseous foriegn body enclosed in a mineral or rock

1. Transform Faults
   1. When rocks move sideways along eachother
2. Normal Fault
   1. Where rocks rubb against eachother up and down and away from eachother
3. Reverse Faults
   1. Rubbed against each other diagonally

1. Geological processes which have modified the crust now have woked in the same way over geological time

1. When an igneous rocks cuts into a formation of sedimentary rocks it (intrusion)can be determined that the intrusion is younger than the sedimentary rocks

1. Faults are younger than the rocks they cut

1. If Sedimentary inclusions are found in a formation it must be older than the formation that contains them

1. States that deposition of sediments occour as horizontal beds

1. States that a sedimentary layer of rock, in a tectonically undisturbed area is younger than the one beneath it

1. Is based on the appearance of fossils in a sedimentary rocks, this can provide a relative age for the formation

1. Rock folded up

Annotations:

• Syncline

1. Rock folded down