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sedimentry
Igneous intrusions that crosscut sedimentary rock that contain fossils can provide a date range because igneous rock is datable by radioactive decay techniques.
sedimentary rocks
fossils
Sedimentary - but itdoes not necessarily contain fossils to be sedimentary.
dose sedeimentry contain fossils
sedimentry
They Often Contain fossils.
sedimentary
They Often Contain fossils.
The strata of sedimentary rock can contain fossils which are peculiar to a specific geologic time. These fossils are referred to as index fossils. Some rock layers also record events such as meteor strikes and periods of volcanism through the deposition of sediments. Igneous rocks in particular contain certain mineral crystals which can be used to provide a radiometric fingerprint of their period of formation.
The strata of sedimentary rock can contain fossils which are peculiar to a specific geologic time. These fossils are referred to as index fossils. Some rock layers also record events such as meteor strikes and periods of volcanism through the deposition of sediments. Igneous rocks in particular contain certain mineral crystals which can be used to provide a radiometric fingerprint of their period of formation.
Igneous intrusions that crosscut sedimentary rock that contain fossils can provide a date range because igneous rock is datable by radioactive decay techniques.
sedimentary rocks
balls
fossils
fossils