Hawaian island chain hotspot Argon-Argon ages

Description

Ar-Ar Ages (millions of years) and distances (km) from Kilauea along the trend of the chain of Hawaian volcanic islands and other seamounts that are believed to have been created by a moving "hot spot".

Usage

data(hotspots2006)

Format

A data frame with 10 observations on the following 6 variables.

age

Ar-Ar age

CI95lim

Measurement error; 95% CI

geoErr

Geological Uncertainty

totplus

Total uncertainty (+)

totminus

Total uncertainty (-)

distance

Distance in kilometers

Details

Note that measurement error is small relative to geological uncertainty. Geological uncertainty arises because lavas are likely to have erupted, over a period of up to 2 million years, somewhat after passage over the hot spot's centre. Dredging or drilling will in general have accessed larvas from the younger half of this interval. Hence the asymmetry in the geological uncertainty.

Source

Warren D. Sharp and David A. Clague, 50-Ma initiation of Hawaiian-Emperor bend records major change in Pacific Plate motion. Science 313: 1281-1284 (2006).

Examples

data(hotspots2006)