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How did geologists estimate the aging of rock layers before radioactivity?
Wiki User
∙ 14y ago
The rock layers were simply assigned geologic period classifications based on index fossils. Little was know about the true age of the rock, only that they were quite old based on the appearance of the fossils compared to existing organisms, and the knowledge that sedimentary rock formation usually took great lengths of time, and that layers of sediments were mostly cyclical in nature.
Wiki User
∙ 14y ago
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Geologists have learned that earths interior is made up of layers or trenches?
Layers.
What kind of scientists would study the earth's layers?
Geologists
How do geologists use the column?
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How do geologists use geologic column?
Geologists use the geologic column to classify layers of rocks and fossils that make up the Earth's crust.
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Geologists study where intrusion and extrusion formed in relation to other rock layers. This helps geologists understand the relative ages of the different types of rock! Hope it helps;)😊
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Technology used to find out the different layers of the earth?
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The methods the geologists used when they first developed the geologic time scale. Were studying rock layers and index fossils worldwide. By Patrick
