Geologists draw on it and other basic principles ( to determine the relative ages of rocks or features such as faults.
Pretty obvious that the dike came after the rocks it cuts through, right?
In permineralization the minerals fill in the empty spaces to form a fossil, but in petrification the minerals completely replace the original cellular material and the C.
The biosphere currently contains 1 trillion carbon-12 atoms for every 1 carbon-14 atom (1T:1).
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