exeptional preservation Flashcards

1
Q

Pyritization

A

The process where organic materials are replaced by pyrite during fossilizatio

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2
Q

Silicification

A

The process where silica replaces the original material of a fossil

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3
Q

Mold and Cast

A

This is when a fossil leaves an imprint which is then filled in.

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4
Q

Carbonization

A

A process where organic material is reduced to a thin film of carbon, typically preserving plant fossils as dark carbon-rich impressions

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5
Q

Trace Fossil

A

Indirect evidence of past life, such as footprints, burrows, or feeding marks, which provide information about the behavior of organisms rather than what they look like

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6
Q

Body Fossil

A

Fossils that represent the actual physical remains of an organism, such as bones, teeth, shells, or plant leaves.

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7
Q

Replacement

A

A fossilization process in which the original material of an organism is replaced with minerals over time, typically preserving the structure but not the original material.

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8
Q

Precipitation

A

The process by which dissolved minerals in groundwater crystallize and form solid mineral deposits, often contributing to the fossilization of remains by mineral infill

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9
Q

Anoxic

A

An environment lacking oxygen, which slows down decomposition and helps preserve organic materials, such as in certain fossil-forming marine sediments

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10
Q

Anaerobic

A

Refers to conditions or organisms that exist in the absence of oxygen. Anaerobic environments help in fossil preservation by limiting decay processes driven by oxygen-dependent organisms

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11
Q
A
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11
Q

Decomposition

A

The breakdown of organic matter by biological or chemical processes. In fossilization, rapid burial or anoxic conditions slow decomposition, allowing preservation.

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12
Q

Dissolving

A

The process where minerals or organic material dissolve due to chemical interactions with water, often creating spaces or cavities that can later be filled with minerals

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13
Q

Groundwater

A

Water that exists below the Earth’s surface, which plays a role in fossilization by depositing minerals during processes like silicification or replacement.

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14
Q

Hard Parts

A

The durable components of organisms, such as bones, teeth, shells, or exoskeletons, which are more likely to fossilize than soft tissues.

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15
Q
A