Rock Classification! janeen abuz.

Sedimentary Rocks - rocks formed by the deposition and subsequent cementation.
how sedimentary rocks are formed.

Dolomite Rocks - is a mineral composed of calcium magnesium carbonate.

Sandstone Rock - is composed of sand sized minerals and rock grains.
Limestone Rock - composed of skeletal fragments such as coral, forams and molluscs.
Siltstone Rock - fine grained and consisted with hardened silt.
Metamorphic Rocks - a transformation of pre - existing rocks.
where metamorphic rocks are found.
Gneiss Rock - rocks formed by pre - existing formations that were originally either igneous or sedimentary rocks.
Phyllite - foliated metamorphic rock created from slate.
schist - large, flat, sheet-like grains
Slate - fine - grained, foliated, homogeneous metamorphic rock.
where igneous rocks can be found.
Diorite - an intrusive igneous rock composed of silicate minerals.
Gabbro - large groups of dark, phaneritic, mafic rocks
Granite - composed of mainly quartz and feldspar.
pegmatite - forms during the final stage of magma's crystallization.


Created with images by sridgway - "Sedimentary rocks everywhere" • Pug Girl - "Crazy Gondola" • mypubliclands - "Vermillion Cliffs NM" • Grand Canyon NPS - "Grand Canyon National Park: North Kaibab Trail in Redwall 0985" • dsearls - "2013_01_17_lax-jfk_214" • Kristine Paulus - "Rock Cat" • James St. John - "Quartzite & slate (Baraboo Quartzite, upper Paleoproterozoic, ~1.7 Ga; Van Hise Rock, just north of Rock Springs, Wisconsin, USA) 5" • Rui Silva (ruka) - "_MG_1138" • FredericoPerez - "stone wall slate stone texture" • James St. John - "Orbicular monzodiorite (knoll just south of Rt. 64 & NNW of Plantation Lake, west of the Yadkin River, eastern Davie County, northwest-central North Carolina, USA) 5" • James St. John - ""Rockville White Granite" (porphyritic granite, Rockville Granite, late Paleoproterozoic, 1.73 to 1.78 Ga; quarry near Rockville, Minnesota, USA) 2" • Backpackerin - "torres del paine mountains granite" • Grand Canyon NPS - "Grand Canyon National Park- Basement Rocks_0201"

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