Question

compare and contrast the formation of different type of igneous rocks??​

Answer 1

Answer:

Igneous rocks are formed by the cooling of liquid lava or magma. ... As a result, the magma cools relatively slowly and the grain of the rock is more coarse. Granite is an example of an intrusive igneous rock, formed deep within mountains. Extrusive rocks form on the exterior of the Earth's crust.

Answer 2

Extrusive and intrusive are two main categories of igneous rocks

Explanation:

• Magma (molten rock) cools and crystallizes at volcanoes on the surface of the Earth or when the melted rock is still inside the crust, forming igneous rocks.
• Because of the high heat underneath, all magma forms in the lower crust or upper mantle. Extrusive and intrusive are the two main categories of igneous rocks.
• Extrusive rocks are developed on the Earth's surface from lava, which is magma that has risen from beneath the surface. Example - andesite, basalt, dacite, obsidian, pumice, rhyolite, scoria, and tuff.
• Intrusive rocks: Magma cools and solidifies within the planet's crust, resulting in intrusive rocks.  Example - diabase, diorite, gabbro, granite, pegmatite, and peridotite.