study set

Front

what is a Fossil Record

Back

The mineralized

remains of

organisms and the

rock layers in which

they are found,

showing when and

where long-dead

organisms lived and

how their bodies

were structured

Front

What is a geological time scale.

Back

System of chronological measurement that relates

stratigraphy (study of rock layers) to time

Front

What is a Rock Strata?

Back

Beds or layers of sedimentary rock having

approximately the same composition throughout

Front

Evidence of a past life fossil.

Back

.any phisical evidence of a plant or animal that lived long ago.

.same kinds of fossils are always found together in the same layer of rock

rock layers identified by their unique fossils.

Front

which came first?

Back

.fossils are formed when rock is formed.

When rocks have different fossils that means they were formed at different times.

The study of rock layers is called stratigraphy.

Front

geologic process.

Back

.when rock layers shows repeated sections of basalt geologist believe volcanic activity happened.

Front

oldest to youngest rock layers.

Back

.youngest layers are at the bottom while oldest layers are at the top.

Front

index fossils.

Back

.If you find trilobite fossil in a rock, that means it was formed in the palezolic era

Front

.law of superposition

Back

.layers can be affected by intrusions.

Front

putting al together.

Back

.many rock layers from specific time periods have been discovered.