EARTH SCIENCE
FOSSILS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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the shellfish were dropped there by flying birds
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the rocks of the mountain were once under water
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the shellfish were brought there by humans millions of years ago
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the rocks of the mountain were formed from an underwater volcano
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Detailed explanation-1: -Geologic History The presence of marine organisms in a rock indicates that the region where the rock was deposited was once marine. Sometimes fossils of marine organisms are found on tall mountains indicating that rocks that formed on the seabed were uplifted (Figure below).
Detailed explanation-2: -Centuries ago, scholars puzzled over how seashells could wind up on the tops of mountains. Fossil seashells are now recognized as the remains of ancient sea floors raised to high altitudes by mountain building.
Detailed explanation-3: -Due to the movement of plates on the Earth’s surface, the ocean crust has collided with the continents and caused mountains and mountain ranges to form. As a result, the remains of the sea creatures that are deposited on the ocean floor are now exposed in the mountains.
Detailed explanation-4: -In Nepal, ammonites (marine cephalopods with shells) are found along the bed of the Kali Gandaki River. Climbers who have been to the top of Mount Everest brought back rocks in which the fossils of sea lilies were discovered.