Geology Flashcards
Define lithology
The physical and chemical composition of rocks.
How does lithology impact a rock’s ability to withstand erosion and weathering
Rock with a weak lithology have little resistance to erosion and weathering due to the weak bonds between particles
Rocks with a strong lithology are highly resistant and are more likely to form headlands
An example of a rock with a weak lithology
Clay
An example of a rock with a strong lithology
Why does this rock have a strong lithology
Basalt
It is made up of dense interlocking crystals
Other examples of rocks with weak lithologies
Chalk and carboniferous limestone are soluble in weak acids and vulnerable to carbonation
Define structure
Includes the properties of individual rock types like jointing, bedding and faulting as well as the permeability of rocks
Why is chalk permeable?
It has pores that absorb and store water which is known as primary permeability
Why is carboniferous limestone permeable?
Water seeps into its joints. This is secondary permeability
Angle of dip of rocks
Go to the ‘strata’ set of flashcards
