Name:

Description:

Iridium levels in prehistoric rock layers

Variables:

A data frame with 28 observations on the following 5 variables.

ID

Sample identifier

Source

Type of rock (Limestone Shale)

Depth

Depth of the sample (in meters)

Iridium

Iridium concentration (ppb)

Link To Google Sheets:

Rows:

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References/Notes/Attributions:

Source

Ramsey, Fred L. and Daniel W. Schafer (2002). The Statistical Sleuth, 2nd ed., Pacific Grove, CA, Duxbury, pp.405-407.

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