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geology 2 > Fossilisation and Fossil Record > Flashcards

Fossilisation and Fossil Record Flashcards

1
Q

Trace Fossils

A

preserved impressions of biological activity. indicators of past sedimentary environments.

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2
Q

Coprolites

A

Fossilised animal feces. provide info on feeding habits and interaction of coexisting organisms.

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3
Q

Chemical Fossils

A

When some organisms decompose they leave a characteristic chemical signature. Indirect existence of past life.

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4
Q

Body Fossils

A

remains of living organisms, direct evidence of past life. Body fossils are not indicative of death because they could have been shed at some point during their life.

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5
Q

Chronostratigraphy

A

establishes age of rock sequences and their time relations. Relevant to dating geological events.

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6
Q

What is the fossil record bias towards?

A

Organisms with tissues resistant to decay.
Marine Organisms- erosion on land makes land organisms less preserved.
Organisms living in low energy environments
Abundant Organisms
Recent Organisms

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7
Q

Fossil Use

A

Dating
Reconstructing Ecosystems
Identify Paleoenvironments

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8
Q

Taphonomy

A

The process of fossilisation

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geology 2 (5 decks)

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