Formation of Adakite and Anthracite

Adakite

Anthracite

Add ⊕

1 Formation

1.1 Formation

Adakite rocks are formed when the hydrous fluids are released from minerals that break down in metamorphosed basalt, and rise into the mantle they initiate partial melting.

Anthracite forms from the accumulation of plant debris in a swamp environment. When plant debris dies and falls into the swamp, the standing water of the swamp protects it from decay.

1.2 Composition

1.2.1 Mineral Content

Olivine, Plagioclase, Pyroxene

Calcite, Clay, Clay Minerals

1.2.2 Compound Content

Aluminium Oxide, MgO, Silicon Dioxide

Carbon, Hydrogen, Nitrogen, Oxygen, Sulphur

1.3 Transformation

1.3.1 Metamorphism

✔ ✘

1.3.2 Types of Metamorphism

Cataclastic Metamorphism, Contact Metamorphism, Impact Metamorphism, Regional Metamorphism

Burial Metamorphism, Contact Metamorphism, Regional Metamorphism

1.3.3 Weathering

✔ ✘

1.3.4 Types of Weathering

Chemical Weathering, Mechanical Weathering

Not Applicable

1.3.5 Erosion

✔ ✘

1.3.6 Types of Erosion

Coastal Erosion, Sea Erosion, Water Erosion

Not Applicable

Adakite and Anthracite Formation

Formation of rocks is a long process and hence, Adakite and Anthracite formation sounds very interesting. According to the formation, all rocks are divided into :Igneous Rocks, Fossil Rocks and Metamorphic Rocks. Igneous rocks form by crystallization of magma or lava. The magma is made up of various components of pre-existing rocks which have been subjected to melting either at subduction zones or within the Earth's mantle. Igneous rocks are generally seen at mid ocean ridges or in intra-plate hotspots. Sedimentary rocks are formed when sediments accumulate gradually. As the sediments are buried they get compacted as more and more material is deposited on top. Eventually the sediments become so dense that they form a rock. Metamorphic rocks are rocks which once existed as igneous or sedimentary rocks but have been subjected to varying degrees of pressure and heat within the Earth's crust. Get to know all about formation of Adakite and Anthracite, composition of Adakite and Anthracite and their transformation.