Rock's Flashcards
What r the 3 rock types
Igneous sedimentary and metamorphic
How r igneous rocks formed?
When magma rises from the mantle and reaches the surface ,it cool very slowly and become ricm
How is intrusive igneous rock formed
When the magma becomes trapped below the surface and cools very slowly
How is extrusive rock formed
When the magma reaches the surface and cools and form
How is sedimentary rock formed
Sedimentary is made when pieces of rock,remains of dead animals and plants become compressed and cemented together to form a rock
What is strata
Strata is the layers of rocks dead remains of animals and plants
How is metaphoric rock formed
It it formed when igneous or sedimentary rock when they come into contact with a great heat a due to the pressure become a new rock
Examples of igneous sedimentary and metamorphic rock
Igneos:granite basalt
Sedimentary:sandstone limestone
Metaphoric:marble
What do rocks provide us with
They provide us with important natural resources
What is drilling
Drilling is the process of boring down into the earths crust to extract oil and gas
What is the environmental and economic impact of drilling?
Environmental:onshore and offshore oil spills cause damage to the local environment
Economic:the corribe okl and gas field project off the mayo coast and has invested of almost €4.3 billion
What is quarrying
It is the process of removing rock sand gravel or minerals from the grohnd
Environmental and economic impact of quarrying
Environmental:large quantities of dust are created which can cause air pollution
Economic:quarrying has an important impact on the irish economy and has employed 10,000 people and made over €1 billion
What is shaft mining
This si the process of drilling vertically into the earth to gain access to mineral beneath the surface
Environmental and economic impacts of shaft mining
Environmental:underground mining allow allows companies to dig for coal lead zinc deeper into the ground and the dust can cause pollution to air
Economic:the company pays €38 million in taxes annually and surports 730 jobs direactly
