1.Giveanexampleofametamorphicrock.Alsonametheparent
rockfromwhichitwasformed.
2.Classifythefollowingasigneous,sedimentary&metamorphic:
a)Granite b)Gneiss c)Shale
Answers
Explanation:
EXAMPLE OF METAMORPHIC ROCKS
Common metamorphic rocks include phyllite, schist, gneiss, quartzite and marble. Foliated Metamorphic Rocks: Some kinds of metamorphic rocks -- granite gneiss and biotite schist are two examples -- are strongly banded or foliated.
EXAMPLE OF PARENT ROCKS
Shale is the parent rock, or protolith, that can produce several different types of metamorphic rock, depending on the heat and pressure conditions it is exposed to. These types include slate, schist, phyllite, or gneiss, and of these four, slate is the least metamorphosed form.
FORMATION OF PARENT ROCKS
Parent material is the starting point for most soil development. The parent material may be mineral rock and/or organic matter. When parent rock material is exposed to the atmosphere or when organic matter and/or minerals are deposited on the earth's surface, soil formation begins.
GRANITE
Granite ( /ˈɡrænɪt/) is a coarse-grained igneous rock composed mostly of quartz, alkali feldspar, and plagioclase. It forms from magma with a high content of silica and alkali metal oxides that slowly solidifies underground. It is common in the Earth's continental crust, where it is found in bodies called plutons
Gneiss
a metamorphic rock with a banded or foliated structure, typically coarse-grained and consisting mainly of feldspar, quartz, and mica.
Shale
Shale is a fine-grained, clastic sedimentary rock, composed of mud that is a mix of flakes of clay minerals and tiny fragments (silt-sized particles) of other minerals, especially quartz and calcite.