100 200 400 300 400 Relative Dating Absolute Dating Geologic Time Scale and Fossils Misc. 300 200...

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Transcript of 100 200 400 300 400 Relative Dating Absolute Dating Geologic Time Scale and Fossils Misc. 300 200...

Page 1: 100 200 400 300 400 Relative Dating Absolute Dating Geologic Time Scale and Fossils Misc. 300 200 400 200 100 500 100.
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Absolute Dating

Geologic Time Scale and Fossils

Misc.

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Relative dating providesUs with…

What is the sequence or order of events in which the rocks were laid down?

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Otzi the Ice manAnd the Lindow man’s ages

Were found using ______ dating.

What is C-14 or Absolute?

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Longest division of geologictime

What is an era?

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Why would we notFind fossils in rocks cooled from

Magma?

What is the fossils would melt and be destroyed?

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An igneous intrusion cutsThrough other rock

layers

What is cross cutting?

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The element that the originalRadioactive element

Decays into.

What is the daughter product?

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About 88% of Earth’s History is within this time

Period.

What is Pre-Cambrian?

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Sample A has gone through3 half-lives. The half-life of the

Element is 500 years. How Old is sample A?

What is 1500 years old?

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When rock layers are incomplete. Can be caused by

Erosion.

What is unconformity?

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The original radioactive elementBefore it begins to decay.

What is the parent material?

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Molds, Casts, PetrificationAnd Carbonization

What are different methods of fossil preservation?

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To match up rock layers byLooking at clues.

What is to correlate?

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Remains or traces of onceLiving organisms

Lived for a certain knownTime period and can

Be used to date things.

What is fossils and index fossils?

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The time it takes for 50%Of the radioactiveIsotope to decay.

What is half-life?

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Where would we break up The time line below

To represent recent geologic history And geologic past?

What is …?

Today 4.6bya

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Difference between absolute and Relative dating.

What is R= sequence or order of events, A= Age in years of a sample?

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Which is the oldest rock layer?Which is the youngest?

What principle tells us this?

What is I, R and the principle of superposition?

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How many half-lives has an Element undergone if there is

25 grams of parentMaterial and 75grams of

Daughter?

What is two half-lives?

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Why do we know more aboutRecent geologic history

Than events occurring in geologicPast?

What is fossil record, preservation and destroying of clues and evidence?

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Fill in the table if we startWith 100g of the sample.

Parent Material (50, 25), Daughter Product (50, 75)

Hal-life Parent Material Daughter Product

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