Lab 1 Flashcards
1
Q
what is a layer
A
strata/bed
2
Q
what is stratigraphy
A
branch of geology concerned with the arrangement of strata through time
3
Q
what is the principle of superposition
A
what is on top is youngest
4
Q
principle of original horizontality
A
rocks that are now tilted were once deposited in horizontal layers
5
Q
How do you tell if a strata is younger from the left side or right side
A
hard to tell without fossils
1) use roots
2) graded bedding
- sediments deposited in wading current
3) mud cracks
- way up is direction that mud crack widens
6
Q
cross cutting relationship
A
a geographical feature that curs another is the younger of the two features
7
Q
A
