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Posted by / 28-Jun-2017 23:26

Radiometric dating lab

The field relationships, as they are called, are of primary importance and all radiometric dates are evaluated against them.

For example, a geologist may examine a cutting where the rocks appear as shown in Figure 1.

WK2: Lab - Radiometric dating: Answer the following questions. In order to ascertain useful dates on rock units to help determine the age of major events.

Your mission is to date what is thought to be a very old fossil with a volcanic ash layer immediately above the fossil.

By looking at other outcrops in the area, our geologist is able to draw a geological map which records how the rocks are related to each other in the field.

Clearly, Sedimentary Rocks A were deposited and deformed before the Volcanic Dyke intruded them.

The test element has a half-life of 300 million years.

by Tas Walker A geologist works out the relative age of a rock by carefully studying where the rock is found in the field.

Here he can see that some curved sedimentary rocks have been cut vertically by a sheet of volcanic rock called a dyke.

It is clear that the sedimentary rock was deposited and folded before the dyke was squeezed into place.

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