Principles

Question	Answer
Stratigraphy	The Study of the rock record of geological events through time. The relative order and position of strata and their relationship with the geological timescale.
Ma	Megaannus/ 1 million years
How old is the Earth?	4550Ma or 4.5bn yrs
Geological column: Age increases.... Time is presented in...... The Time scale is not......	Downwards Ma Linear
Lithostratigraphy	The 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).
Facies	A set of characteristics that characterise the environment in which rocks formed. e.g sandstone = possible beach or desert facie.
Formation	Based on rock units with comparable lithology, facies or similar properties.

Resource summary

	Created by Ffion Butler over 7 years ago