|
Batholith |
A big 'dome' shaped intrusion of magma in the crust. |
|
Clay |
A fine grained sedimentary rock, it is made from the chemical
weathering of other rocks and minerals. |
|
Chalk |
It's a sedimentary rock, a type of limestone made of calcium
carbonate. |
|
Doline |
Hollows in the limestone formed by a stream going into it or by an
underground cave collapsing. |
|
Dry valley |
Old river valleys that were formed when there was more water usually
after an ice age. |
|
Dyke |
A vertical intrusion of magma in the crust. |
|
Frost-shattering |
Water freezing in cracks then expanding causing erosion. |
|
Granite |
Rock formed by magma cooling inside the crust. |
|
Igneous rock |
Comes from magma from a volcano or from magma that cooled under the
Earth surface. |
|
Impermeable |
Water cannot pass through. |
|
Intrusion |
Where magma has been forced into cracks in the crust leaving a dyke,
trench or batholith. |
|
Jointed rock |
Rocks that have small cracks in them. |
|
Limestone |
A sedimentary rock made from skeletons or shells of sea creatures. |
|
Limestone Pavements |
Cracks in exposed limestone are made bigger by solution. |
|
Metamorphic rock |
Rock that has been put under pressure until they change into a new
type of rock. |
|
Porous |
Lets water pass through. |
|
Quarry |
Open cast mines. |
|
Ridge |
The exposed end of a dyke which sticks out at the surface of the
crust. |
|
Schist |
A form from basalt or shale or has been pressurised. |
|
Sedimentary rock |
Formed by living things that have fallen to the bottom of a sea or
lake. |
|
Swallow hole |
Where a stream dissolves a hole in limestone creating a hole. |
|
Tor |
The exposed part of a batholith. |
|
Trench |
A horizontal intrusion of magma in the crust. |
