Geological fossils are exclusively preserved within__________ rocks:
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Answer: D. both A & C
Explanation
Geological fossils require gentle accumulation environments to preserve delicate biological structures intact. Sedimentary and aqueous rock formation processes involve low temperatures and gentle burial conditions. Intense heat and pressure associated with igneous and metamorphic rock genesis destroy organic remains. Sedimentary rocks accumulate layer by layer from sediments settling in water or air. Aqueous rock formations develop specifically through chemical or physical deposition in water bodies. Rapid burial by sediment shields dead organisms from scavengers and atmospheric decay.
Paleontologists rely exclusively on sedimentary rock strata to reconstruct Earth biological history. Fossil records embedded in sedimentary layers help geologists date relative rock ages accurately. Energy exploration teams use fossil-bearing sedimentary formations to locate petroleum reservoirs. Metamorphic rocks undergo extreme heat and pressure that obliterate all original fossil evidence. Igneous rocks form from molten magma which incinerates any organic material completely. Both A and C correctly identify the rock types capable of preserving fragile biological fossils.
- Subject
- Agriculture
- Category
- Agriculture
- Topic
- —
- Difficulty
- medium
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