Question

write the difference between plutonic and hypabysal rock with one example​

Answer 1

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Main difference between a subvolcanic verses a plutonic is depth at which the rock solidified at from its molten state. Plutonic implies a depth greater than subvolcanic by definition but I am sure there is some overlap between shallow end of plutonic and subvolcanic. Depth of emplacement for plutonic would mostly be much greater than 2 km.

Plutonic is an igneous rock formed by solidification at considerable depth beneath the earth's surface.

Subvolcanic rock, also known as a hypabyssal rock, is an intrusive igneous rock that is emplaced at medium to shallow depths (<2 km) within the crust.

Answer 2

➤ AnSwer :-

⟹ Plutonic rocks :-

• When magma never reaches the surface and cools to form intrusions (dykes, sills etc) the resulting rocks are called plutonic. Depending on their silica content, they are called (in ascending order of silica content).
• By quantity, these are the by far most common rock types.

$⟶$Examples :-

→ Granite

→ Gabbro

→ Granodiorite

⟹ Hypabysal rock :-

• Igneous rocks which form at shallow depths in the earth are known as hypabyssal rocks. They generally have smaller crystals.

$⟶$ Examples :-

→ Diabase

→ Quartz-dolerite

→ Micro granite