Flashcards

Principles

Ffion Butler Geology A-Level Inglês 7 flashcards

Flashcards do conjunto (7)

1StratigraphyThe Study of the rock record of geological events through time.
The relative order and position of strata and their relationship with the geological timescale.
2MaMegaannus/
1 million years
3How old is the Earth?4550Ma
or
4.5bn yrs
4Geological column: Age increases.... Time is presented in...... The Time scale is not......Downwards
Ma
Linear
5LithostratigraphyThe physical characteristics of a rock unit and its stratigraphic position relative to other bodies of rock.
Can change both vertically (varying rock types) and laterally (changing environments).
6FaciesA set of characteristics that characterise the environment in which rocks formed.
e.g sandstone = possible beach or desert facie.
7FormationBased on rock units with comparable lithology, facies or similar properties.