Sedimentary Rock Identification
Sedimentary rocks are formed from pre-existing rocks or pieces of once-living organisms. These materials are transported by wind, water, or ice and then deposited in layers. Cementation then binds these particles together.
Analyzing Rock Options
- Sandstone: Composed mainly of sand-sized mineral particles or rock fragments. It forms from the cementation of sand grains and is classified as a clastic sedimentary rock.
- Slate: A fine-grained metamorphic rock formed from shale or mudstone under low-grade metamorphic conditions.
- Granite: An intrusive igneous rock formed from magma that cools slowly beneath the Earth's surface.
- Lignite: A soft, brown, low-grade coal. It is formed from compacted plant matter and is classified as an organic sedimentary rock.
Identifying Sedimentary Rock
Among the options, both Sandstone and Lignite are types of sedimentary rocks. However, Sandstone is a primary example of a clastic sedimentary rock.
Therefore, Sandstone is a type of sedimentary rock.
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Important Questions from Ancient History
Polygynous family is represented by
The following are the archealogical sources of Indian history :
(a) Stone inscriptions
(b) Copper plates
(c) Leaf inscriptions
(d) Pillar inscriptions
Select the correct answer -
Regarding the Indus Valley Civilization, consider the following statements:
1) It was predominantly a secular civilization and the religious element, though present, did not dominate the scene.
2) During this period, cotton was used for manufacturing textiles in India.
Which of the statements given above is/are correct?
Who founded the Rashtrakuta empire?
Whom did the Greeks call "Amritaghat" which means slayer of enemies?
