Limestone SRPs Flashcards

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1
Q

Define Limestone

A

Limestone is an Organic Sedimentary rock

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2
Q

Define Sedimentary

A

A Sedimentary Rock is a Rock that is made up of particles that have been put under intense pressure over a long period of time

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3
Q

Define Organic

A

Organic Sedimentary rocks are rocks that were made up of Organic sediment such as dead plants or animals

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4
Q

Where can it be found

A

Burren Co. Clare

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5
Q

When was this limestone formed

A

The limestone in the Burren is 350 -300 million Years old

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6
Q

Where was it when formed

A

At this time Ireland was Situated near the equator, under warm, tropical and shallow seas

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7
Q

What goes into forming it

A

Over time there is a build up of Dead sea creatures, plants and other sediment that has been transported by rivers to the Sea floor.

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8
Q

Where does the calcium carbonate come from

A

A substance known as Calcium Carbonate or Calcite is squeezed out of the shells that have been deposited. This substance begins to cement the sediment together.

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9
Q

Lithification - Define

A

Lithification is the process of turning sediment into Rocks.

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10
Q

Because L is S it contains Strata / BP

A

Limestone is a Sedimentary rock, therefore, it is similar to other sedimentary rocks in that it is made up of horizontal layers, known as strata or bedding planes.

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11
Q

what causes the Vertical cracks

A

The Limestone also has vertical Cracks in it. they formed when the earth’s movements folded and split the rock as Ireland moved northwards during plate movements

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12
Q

Permeable / Pervious

A

Limestone is a Permeable, Pervious Rock. This means that water passes through the joints and bedding planes but not through the actual body of the rock itself

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13
Q

development of limestone pavement

A

Bare Limestone forms a distinctive karst Landscape known as Limestone pavement

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14
Q

weathering

A

Carbonation occurs when the naturally acidic rain falls on the limestone pavement.

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15
Q

limestone turns into ______ when weathered

A

Limestone turns into a soluble calcium bicarbonate.

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16
Q

underground caves formed?

A

as the acidic rain passes through the rock it erodes out passages and caves. Over time these caves and caverns become the main channel of any water that is flowing out from the rock

17
Q

formation of Stalactites, Stalagmites and Pillars

A

When the water gets to these caves it forms a droplet on the ceiling of the cave, at this point there are two options as to what might happen. The first is that The water evaporates leaving just the soluble calcium bicarbonate behind causing a stalactite. The second is that it will drip down and then evaporate this will form a stalagmite.

18
Q

Example of underground features

A

Eg. Crag Caves, Co. Kerry.