Foss Earth History Investigation

Front

If a geologist is looking for early human fossils, rocks from what era would be most interesting to them? Cenozoic, Mesozoic, Paleozoic, Precambrian

Back

Cenozoic

Front

Why do geologists use eras and periods (instead of days, months, years) to divide geological time into huge chunks?

Back

Geological time is very long, so days, months, and years isn't practical.

Front

Eras or periods are not considered lengths because the length of an era or period is________________.

Back

Based on significant evolutionary events in Earth's history

Front

Geological time extends from _______________________.

Back

Earth's origin to the present day

Front

How can you correlate the sties by lining up the Reservoir Limestone and the Berkeley Limestone?

Back

You can correlate the sties by lining up the Reservoir Limestone and the Berkeley Limestone because of the sponge fossil (index fossil), and then you can see that Gifford would be below Reservoir.

Front

Describe the sedimentary environment that eventually led to the formation of Gifford Shale: Slow moving/still water, muddy environment (fine particles settle), fossil evidence.

Back

Slow moving/still water, muddy environment (fine particles settle), fossil evidence.

Front

What are two reasons that an organism that lived in ancient times may not have been discovered as a fossil?

Back

Fossil may not have been found yet; fossil was eaten or otherwise destroyed.

Front

What is the most important use of index fossils to geologists? Options: They show what kind of life existed long ago, They provide evidence for the principle of original horizontality, They can be used as indicators for the age of the sediments that formed the rock, They provide the ingredients for sedimentary rocks

Back

They can be used as indicators for the age of the sediments that formed the rock

Front

Evidence of past life, including remains, traces, and imprints, preserved in earth material, such as rock

Back

Fossil

Front

The study of fossils

Back

Paleontology