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प्रश्न
Why fossils are preserved in Sedimentary and not in Igneous rocks?
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उत्तर
Fossils are remains of vegetation and animals buried under the sediments. The sedimentary rocks are stratified rocks and are found in layers. These fossils are preserved in between these layers. But in Igneous rocks, the fossils are destroyed due to high temperature of lava.
संबंधित प्रश्न
Rocks and minerals play a very important role in our lives.
Can you imagine modern life without minerals?
Differentiate between SIAL and SIMA.
What is sills?
Give two examples of sedimentary rocks.
What processes are involved in the formation of Igneous Rocks?
Explain this term associated with rocks: Extrusive Igneous Rocks
Name the main types of rocks.
Name different types of sedimentary rocks.
Classify the following rock: Quartzite
Give one word for the following.
A sedimentary rock, which is composed of microscopically fine, soft and smooth particles.
Give one term for the following statement:
Igneous rocks of deep seated origin.
Give one term for the following statement:
Formed by evaporation in saline lakes.
Fill in the blank below:
______are intrusions of igneous rock that are vertical in shape
Diamond is an example of _______ rock.
Mention a few specimens of magnificent rock-cut architecture in India?
Why are crystalline rocks called so?
Statement (1): Sedimentary rocks consist of many layers.
Statement (2): Sedimentary rocks are formed by the sediments deposited at different points of time.
Statement (1): Sedimentary rocks consist of many layers.
Statement (2): Sedimentary rocks are formed by the sediments deposited at different points of time.
Match the following:
| A. | Basalt | 1. | Anthracite |
| B. | Limestone | 2. | Extrusive igneous |
| C. | Coal | 3. | Metamorphic rock |
| D. | Gneiss | 4. | Sedimentary rock |
Match the following:
| A. | Basalt | 1. | Anthracite |
| B. | Limestone | 2. | Extrusive igneous |
| C. | Coal | 3. | Metamorphic rock |
| D. | Gneiss | 4. | Sedimentary rock |
