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JC GEOG
rock soils mining junior cert
Term | Definition |
---|---|
igneous | granite, basalt-from magma cooling |
sedimentary | limestone,sandstone-sediments become rock after great pressure |
metamorphic | quartzite,marble - changed under great heat and pressure |
bricks, cement, coal, iron ore | items made from rock |
shaft mining | mining under the ground |
open cast mining | surface mining |
soil profile | what soil is made up of |
podzols | grey colour mountain areas ,coniferous forest |
peat soil | from bog |
brown soil | midland of Ireland. good suply of humus deciduous |
laterite | tropical red soil |
soil erosion | soil being removed by human activity |
deforestation | removing forests |
overcropping | soil being over used |
overgrazing | too many animals on soil soil is bare and subject to erosion |
soil conservation | using soil correctly |
contour ploughing | ploughing around the edge of hill |
shelter belts | trees set to shelter crops |
basalt | igneous rock, giant's causeway Antrim |
quartzite | igneous rock, co Wiclow |
marble | metamorphic rock ,Connemara |
sandstone | sedimentary rock, Cork ,Kerry Mountains |
limestone | sedimentary rock, Burren Co Clare |
minerals | chemical compounds in soil |
humus | dead plant matter, enriches soil |
micro organisms | bacteria that break down plant litter |