Formation of Novaculite and Gabbro

Novaculite

Gabbro

Add ⊕

1 Formation

1.1 Formation

Novaculite forms when microcrystals of silicon dioxide grow within soft sediments that become limestone or chalk. The formation of Novaculite can be either of chemical or biological origin.

Gabbro, a mafic rock, forms due to cooling and crystallization of magma underneath Earth's surface.

1.2 Composition

1.2.1 Mineral Content

Quartz, Silicon

Augite, Olivine, Plagioclase, Pyroxene

1.2.2 Compound Content

Ca, Silicon Dioxide

Aluminium Oxide, CaO, Chromium(III) Oxide, Iron(III) Oxide, Potassium Oxide, MgO, Sodium Oxide, Silicon Dioxide, Sulfur Trioxide

1.3 Transformation

1.3.1 Metamorphism

✔ ✘

1.3.2 Types of Metamorphism

Not Applicable

Impact Metamorphism

1.3.3 Weathering

✔ ✘

1.3.4 Types of Weathering

Not Applicable

Chemical Weathering

1.3.5 Erosion

✔ ✘

1.3.6 Types of Erosion

Chemical Erosion, Coastal Erosion, Glacier Erosion

Coastal Erosion

Novaculite and Gabbro Formation

Formation of rocks is a long process and hence, Novaculite and Gabbro 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 Novaculite and Gabbro, composition of Novaculite and Gabbro and their transformation.