Record Details
Geochronology of Galapagos seamounts
ScholarsArchive at Oregon State University
| Field | Value |
|---|---|
| Title | Geochronology of Galapagos seamounts |
| Names |
Sinton, Christopher W.
(creator) Christie, David M. (creator) Duncan, Robert A. (creator) |
| Date Issued | 1996-06-10 (iso8601) |
| Abstract | Lavas from seamounts of the central Galápagos Platform and the Carnegie Ridge increase in age with distance from the western edge of the platform, consistent with a hotspot model for the generation of these features. The areal distribution of seamount ages suggests that the pattern of dispersed volcanism seen on the present islands also prevailed between 5 and 6 Ma. Age-distance relationships are consistent with a decrease in the velocity of the Nazca plate relative to the Galápagos hotspot during the past 9 m.y., most likely at ~5 Ma when there was a change in Pacific-hotspot motion. Alternatively, the plate velocity remained constant and volcanism at a single seamount endured up to 7 m.y. lavas from seamounts along the Wolf-Darwin lineament to the northwest of the Galápagos Platform are young (<1 Ma), with the youngest measured ages closest to the platform. |
| Genre | Article |
| Identifier | Sinton, C.W., Christie, D.M., and Duncan, R.A., 1996, Geochronology of Galápagos seamounts. Journal of Geophysical Research, Vol. 101, Pg. 13,689–13,700. |
