Tarih: 12 Şubat 2023, Pazar 20:25:26 Mesaj Konusu: Types of rocks and their characteristics
rocks
Rocks are known as solid natural formations consisting of one or more minerals, and are an essential part of the Earth's crust. Rocks are divided according to the way they are formed into three main types: igneous rocks, metamorphic rocks, and sedimentary rocks, and each type of rock has unique characteristics through which it can be distinguished from the other two types.
igneous rocks
Igneous rocks are rocks formed as a result of solidification of molten materials (magma), and solidification may occur in the ground, so the resulting rocks are called igneous rocks, and some of them harden on the surface of the earth, so they are called igneous rocks as well as igneous rocks. Igneous rocks are classified according to the percentage of silica in them into the following types :
Acidic Igneous Rock: Rock containing more than 66% silica. Examples include:
Granite (in English: Granite): It is an igneous rock formed at a great depth in the ground, and it is often a coarse-grained rock; That is, its mineral content can be distinguished with the naked eye, and it may sometimes be medium or fine-grained.
Granite consists mainly of quartz, feldspar, and mica, and there are rocks equivalent to granite, but different from them in the nature of the texture, namely: rhyolite, obsidian, passion stone, and pumice, which is known as pumice stone.
Granodiorite: A coarse-grained igneous rock, the volcanic counterpart of granodiorite is called dacite.
Intermediate igneous rocks: Igneous rocks contain a silica content of 52-66%. Examples include:
Syenite: A subterranean, often coarse-grained rock, the volcanic counterpart to syenite is a trachyte.
Diorite: An igneous rock with a volcanic counterpart called andesite.
Basic igneous rocks: igneous rocks with a silica content ranging between 40-52% and including gabbro plutonic rocks, and their volcanic equivalent basalt (in English: Basalt).
Ultracrystalline Igneous Rocks: Igneous rocks contain less than 40% silica. Examples include: donuti and peridotite.
properties of igneous rocks
Relatively strong rocks as a result of the cohesion of the granules that make them up during cooling.
Its primary colors are black, white and gray, and there may be igneous rocks of dull colours.
It has a crystalline texture as a result of exposure to melting and cooling.
It does not contain fossils because it has been exposed to high temperatures that do not allow any kind of life to exist in it.
They are not arranged in layers, with the exception of volcanic ash rocks, which may form layers when deposited within water bodies.
Tarih: 21 Mart 2023, Salı 18:24:41 Mesaj Konusu: Great Tips To Picking Custom Sportswear
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