Igneous Rock

No, limestone is a sedimentary rock that forms from the accumulation of mineral particles such as calcite or aragonite. Intrusive igneous rocks are formed from the cooling and solidification of magma beneath the Earth's surface.

Intrusive igneous rocks are created when magma pushes up into the Earth's crust and cools there. Although the decrease in pressure the magma experiences as it rises in the crust allows it to solidify, this is still a fairly slow process, so intrusive igneous rocks tend to have larger grains than extrusive igneous rocks. Granite and Gabbro are both intrusive igneous rocks.

When magma cools you get intrusive igneous rock.

Think of other ig words you know. Ignite, ignition they all mean heat. Igneous rocks are formed from rocks that have been heated so much they melt. When they cool they make new, igneous, rocks. If it's magma that cools that means it's still under the earth's crust so the igneous rock is intrusive. If it's lava that cools after flowing down a volcano it's an extrusive igneous rock that's formed.

Molten rock under the ground is called magma. It is formed from the melting of rocks in the Earth's mantle. Magma can rise to the surface through volcanic eruptions, or it can solidify underground to form igneous rock.

Igneous rocks form when magma (molten rock) cools and solidifies either beneath the Earth's surface (intrusive) or on the surface (extrusive). The rate of cooling and the mineral composition of the magma influence the texture and characteristics of the resulting igneous rock.

Granite is a common example of a hard igneous rock. It is characterized by its interlocking mineral grains and typically contains minerals like quartz, feldspar, and mica. Granite is widely used in construction and monuments due to its durability and attractive appearance.

Sedimentary rock can be made up partially of igneous clasts, but igneous rock is igneous rock.

Igneous rocks, which are formed from magma cooling underground, or lava above ground are formed from previous igneous, metamorphic, or sedimentary rocks which have become melted, usually as a result of plate collision and subduction. When these igneous rocks are exposed to weathering and erosion, it is called cleavage. They break down into smaller particles that are transported by wind and water to a place of deposition, where they can form into sedimentary rock.

A molten gassy rock is a type of igneous rock that forms from magma that contains dissolved gases, such as water vapor and carbon dioxide. As the magma rises to the surface and cools, the gases escape, leaving behind a rock with gas bubbles or vesicles. This type of rock is commonly associated with volcanic activity.

A laccolith is a type of igneous rock formation that is created when magma intrudes between layers of sedimentary rock, causing the overlying layers to arch upward. It is classified as an intrusive igneous rock.

Any rock created by the cooling of magma or molten material is classified as an igneous rock. These rocks can either be cooled in the earth or on the earths surface. Rocks cooled inside the earth are called intrusive igneous rocks, and have large crystals. Rocks cooled on the earth's surface are called extrusive igneous rocks. These rocks, due to faster cooling times, have very very tiny crystals.

The largest exposed granite face in the world is found at Yosemite National Park in California, USA – specifically, at El Capitan. This iconic rock formation attracts climbers from all over the world due to its sheer size and vertical walls.

Igneous rocks formed from hardened lava include basalt, andesite, and rhyolite. Basalt is a fine-grained, dark-colored rock commonly found in oceanic crust, while andesite and rhyolite are intermediate to felsic in composition and typically found in volcanic arcs or continental volcanic regions.

Obsidian

Mantle rock, usually fed by subducting crusts at destructive plate boundaries, melt under the heat, creating magma (or igneous melt). This magma is usually less dense than the surrounding (country) rock and so rises to or near the surface, forming igneous rocks in two ways:

1) The rock does not reach the surface, but cools and crystallises inside the Earth, creating INTRUSIVE igneous rocks. These usually have large crystals as they cool more slowly due to the hot surrounding temperatures.

2) The rock reaches the surface via volcanic or fissure eruptions as lava, and cools and crystallises very quickly on the earth's surface forming EXTRUSIVE igneous rocks. These have fine crystals due to the quick cooling time and colder surrounding temperatures.

Extrusive igneous rocks form when magma erupts as lava above Earth's surface. The resulting lava cools rapidly on Earth's surface. As a result, minerals do not have time to form. An example of an extrusive igneous rock is pumice.

Water does cause decomposed granite to harden, but not into anything resembling cement. Wetting and then compressing (foot traffic will do it) will pack it down. Once the sun has dried it out again, it's much, much more compact. It goes from loose sand to the consistency of packed, sun-baked dirt. When it's wet for the first time, it's like frosting or mud. After drying out for the first time, subsequent wettings won't return it to this soft state, so don't worry.

The Korean War Veterans Memorial in Washington DC

Normally when sedimentary rocks are squashed and heated they do indeed change, they become metamorphic rocks. e.g. mud will be turned into slate - limestone into marble etc.
As the metamorphic temperature and pressure increase still further, most sedimentary rocks end up as Granulites or Banded Gneisses which look very much like igneous rocks (Granites).
In the extreme, sedimentary rocks can melt, and these melts will form new magmas which will eventually harden to form new igneous rocks.

Yellow quartz symbolizes happiness, joy, clarity of thought, and positive energy. It is believed to promote creativity, enhance focus, and bring about a sense of optimism and mental clarity. Additionally, it is said to have properties that can help manifest dreams and goals.

The molten rock that flows from a volcano is called lava.

Molten rock from under the surface (called 'magma') that reaches the Earth's surface and flows out is is called 'lava'.

Ruby is a variety of the mineral corundum, and is not classified as sedimentary, igneous, or metamorphic in the manner of rocks.