Quarry
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A quarry is a type of open-pit mine from which rock or minerals are extracted. Quarries are generally used for extracting building materials, such as dimension stone. Quarries are usually shallower than other types of open-pit mines.
A quarry is often mistaken for other types of open-pit or open-cast mines such as borrow or gravel pits.
Types of rock extracted from quarries include:
- Cinder
- China Clay
- Coquina
- Construction aggregate
- Granite
- Gritstone
- Gypsum a mineral
- Limestone
- Marble
- Sandstone
- Slate
Quarries in level areas often have special engineering problems for drainage. The Coquina Quarry is excavated to more than sixty feet (18 meters) below sea level. To reduce surface leakage a moat, lined with clay, was constructed around the entire quarry. Ground water that seeps into the pit is pumped up into the moat.
Many quarries fill with water to become ponds or small lakes after abandonment for mining purposes. Others have become landfills.
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Stone quarry adelaide.JPG
Construction aggregate quarry near Adelaide, South Australia |
 Coquina Quarry sixty feet below sea level, Conway, South Carolina |
Dimension Stone QuarryUSGOV.jpg
A dimension stone quarry. |
Cinder quarry.jpg
A small cinder quarry. |
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An abandoned limestone quarry. |
Portland Stone quarry on the Isle of Portland, England. |
Basalt quarry on the Holyoke Range of Massachusetts. |
See also
- Clay pit
- Collecting fossils
- Gravel pit
- Kouloura
- List of rock types
- List of minerals and stone types
- List of stone
- Mountaintop removal mining
External links
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| Surface | Open-pit · Quarrying · Strip · Placer · Mountaintop removal |
| Sub-surface | Drift · Slope · Shaft · Hard rock · Borehole · Room and pillar · Longwall · Retreat |
da:Stenbrud de:Steinbruch es:Cantera fr:Carrière (géologie) he:מחצבה lt:Karjeras nl:Groeve no:Pukkverk pl:Kamieniołom pt:Pedreira (geologia) ru:Карьер simple:Quarry sk:Lom (ťažba) sv:Stenbrott tr:Taş ocağı uk:Кар'єр wa:Cårire zh:沙石场
