Transcript CARBONIFEROUS LIMESTONE Carboniferous Limestone

LIMESTONE
Glossary by 2nd Year students
Newlands 2009
GRYKES
Grykes: Joints which reach the surface along the limestone pavement
and they are widened and deepened by solution to form grooves.
They are widened and deepended by solution to form grooves.
PERMEABILITY
Permeability is rate at which water can either be stored in a rock or is
able to pass thought it.
CARBONIFEROUS LIMESTONE
Carboniferous Limestone is a term used to describe a variety of different types
of limestone occurring widely across Great Britain and Ireland which were
deposited during the Dinantian stage of the carboniferous poderi. They were
formed between 363 and 325 million years ago.
CARBONIFEROUS LIMESTONE
Carboniferous limestone is a sedimentary rock made of
calcium carbonate. It is generally light-grey in colour, and
is hard. It was formed in warm, shallow tropical seas
teeming with life
KARST
An area of irregular limestone in which
erosion has produced fissures, sinkholes,
underground streams, and caverns.
It is known to form a highlight caused by
chemical weathering of certain rocks (like
limestone, dolomite, aljez, etc.).
CALCIUM CARBONATE
Calcium carbonate is a chemical compound. It is a common substance
found in rocks.
A colorless or white crystalline compound, occurring naturally as chalk,
limestone, marble, and other forms and used in a wide variety of
manufactured products including commercial chalk, medicines, and
dentifrices.
STALACTITE
Stalactite is a type of secondary mineral that hangs from the ceiling or
wall of limestone caves, it is a type of dripstone.
An icicle-shaped mineral deposit, usually calcite or aragonite, hanging
from the roof of a cavern, formed from the dripping of mineral-rich
water.
STALAGMITE
Stalagmite is a type of speleothem that rises from the floor of a
limestone cave due to the dripping of mineralized solutions and the
deposition of calcium carbonate.
PILLARS
Pillars are the result of stalactites and stalagmites joined together
CARBONIC ACID
Carbonic Acid is a molecule found in rainwater that dissolves the rock.
A weak, unstable acid, present in solutions of carbon dioxide in water. It
reacts with Calcium
CHEMICAL WEATHERING
It is the decomposition of rocks caused by a chemical change within the
rock.
The chemical process by which rocks exposed to the weather undergo
changes in character and break down. The rocks decompose by a
chemical change within the rocks
LIMESTONE
It is a type of rock that forms from remains of shells and skeletons of
small marine organisms.
SWALLOW HOLES
They are holes in the earth that are formed when various acids in the
water begin to dissolve and widen surface joints.
Karst topography
Karst topography is a landscape shaped by the dissolution of a layer or
layers of soluble bedrock, usually carbonate rock such as limestone or
dolomite.
DRY VALLEY
The evidence that rivers once flowed on top of limestone. Are usually
very steepsided.
UNDERGROUND LANDFORMS
RESURGENCE
Should the river meet an underlying impermeable rock, it will have to
flow over this rock until it reaches the surfacee as a spring or resurgence.
DEPOSITION OF LANDFORMS