GENERAL GEOLOGY

GEOLOGY

STRATIGRAPHY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What type of rock will not contain fossils?
A
Igneous
B
Limestone
C
Sandstone
D
Siltstone
Explanation: 

Detailed explanation-1: -Metamorphic rocks are formed from igneous or sedimentary rocks under high temperature and pressure which can alter the structure or texture of rocks, making these rocks as devoid of fossils.

Detailed explanation-2: -Igneous rock, like granite and basalt, is formed by molten rock erupting from deep within the earth. Metamorphic rock, such as marble, is formed by tremendous heat and pressure. Fossils are not usually found in either igneous or metamorphic rocks.

Detailed explanation-3: -The igneous rocks are formed from extremely hot magma and magma or lava can’t contain any life forms. The metamorphic rocks also can’t contain any fossil as these are formed by subjecting rocks to extremely high pressure and temperature.

Detailed explanation-4: -There are three main types of rock: igneous rock, metamorphic rock, and sedimentary rock. Almost all fossils are preserved in sedimentary rock.

Detailed explanation-5: -Characteristics of Igneous Rocks The igneous form of rocks does not include any fossil deposits. If there are any chances of fossil deep inside the crust, it erupts out of the Earth’s surface and gets destroyed due to the sheer heat these rocks produce. Most igneous forms include more than one mineral deposit.

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