Question

Arrange the layers of rock oldest to youngest- conglomerate, limestone with crinoid, shale with ammonite, sandstone with trilobite

Answer 1

Oldest to youngest

Sandstone with trilobite → limestone with crinoid → shale with ammonite → conglomerate

According to the rule of superposition, rock strata (layers) that are the furthest from the ground's surface are the oldest (formed earliest) and those that are the nearest to it are the youngest (formed most recently).

What is a Rock ?

A rock is a dense mass of mineral grains that have grown or been cemented together over time. There are big rocks and little rocks. Pebbles are little rocks. One or more minerals can be found in every rock.

• According to how they were formed, rocks are categorised by geologists (those who study rocks and minerals).

• Among the physical characteristics of rocks are density, porosity, and permeability. Elastic modulus, Poisson's ratio, and rock strength are the primary characteristics of rocks in terms of mechanics.

Learn more about Rocks here:

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