Map work Flashcards
what dose superposition mean
youngest layer is The highest bed
cross cutting relationship
The layer that cuts across is younger than the layers it cuts across
Included fragments
If a rock has fragments of another rock than the Fragments and the rock that is from is younger
Unconformity
An unconformity is a layer of rock that has been deposited after a period of erosion
discordant
The rock layer is not following the Other beds
Anticline
An up fold the oldest beds are at its core
syncline
A down fold with the youngest rocks in the middle
axial plane
A line down the centre of a fold
dip slip
A fault that moves mainly vertically across beds
strike slip fault
a fault where beds move past each other
Metamorphic aureole
the area that is metamorphosed by an igneous intrusion
regional metamorphism
metamorphism that occurs over a large area as a result of heat and pressure
pluton
a large igneous intrusion
dyke
A minor intrusion that cuts across the beds
foliation
layering in rocks
