Thursday, September 6, 2007

Google Earth Post: Isotopic Dates: Andean Igneous Rocks LE 150 Ma

Here is a compilation in progress:

Isotopic Dates: Andean Igneous Rocks LE 150 Ma

More data are welcome.

Google Earth data sets: Plates and Hotspots Update

All of the Google Earth datasets previously posted have been moved to a different Google Earth Category.

Here are the new links:

Isotopic Dates from East African Volcanics
US Cordilleran Igneous Isotopic Dates LT 40 Ma
Isotopic Dates from Global "Hotspot" Traces
Average Ages for Pacific Hotspot Sample Locations
Stresses - Present to 130 Ma
Hotspot rotback
Isotopic Dates from Baksi (1999) - Original Data
Recalculated Isotopic Dates from Baksi (1999)
Isotopic Dates Compiled by O'Neill et al (2005)
Magnetic Isochrons from Müller et al (1997)
Ar/Ar Dates from Hawaiian-Emperor Chain
Don Anderson's Hotspot Compilation
SWOOSH: Plate-Hotspot Motions, Tristan-No. America
SWOOSH: Plate-Hotspot Motions, Hawaii-No. America
SWOOSH: Plate-Hotspot Motions, Tristan-No. Africa
SWOOSH: Plate-Hotspot Motions, Tristan-Cen. Africa
SWOOSH: Plate-Hotspot Motions, Tristan-So. America
SWOOSH: Plate-Hotspot Motions, Tristan-Australia
Pacific "Hotspot" Isotopic Ages by Koppers et al

(Links in previous posts have been updated.)

Pacific "Hotspot" ages from Koppers et al.

Published isotopic age dates from three publications have been posted on the Google Earth Community site, Pacific "Hotspot" Isotopic Ages by Koppers et al

Koppers, A. A. P., Staudigel, H., Pringle, M. S., Wijbrans, J. R., 2003, Short-lived and discontinuous intraplate volcanism in South Pacific: Hot spots or extensional volcanism? Geochemistry, Geophysics, Geosystems, 4, doi:10.1029/2003GC000533.
Koppers, A. A. P., Duncan, R. A., Steinberger, B., 2004, Implications of a nonlinear 40Ar/39Ar age progression along the Louisville seamount trail for models of fixed and moving hot spots, Geochemistry, Geophysics, Geosystems, 5, doi:10.1029/2003GC000671.
Koppers, A. A. P., and Staudigel, H., 2005, Asynchronous Bends in Pacific Seamount Trails: A Case for Extensional Volcanism? Science, 307, 904-907.

Wednesday, September 5, 2007

SWOOSH - New Data Sets

A series of new data sets have been posted to the Google Earth Community - instantaneous motion directions in hotspot reference frames for comparison with stress orientations.

SWOOSH: Plate-Hotspot Motions, Tristan-No. America
SWOOSH: Plate-Hotspot Motions, Hawaii-No. America
SWOOSH: Plate-Hotspot Motions, Tristan-No. Africa
SWOOSH: Plate-Hotspot Motions, Tristan-Cen. Africa
SWOOSH: Plate-Hotspot Motions, Tristan-So. America
SWOOSH: Plate-Hotspot Motions, Tristan-Australia

Don Anderson's Hotspot Compilation in Google Earth

Don Anderson has posted two spreadsheets of contemporary hotspot locations and properties based on a large number of references on the Mantle Plumes website: The Compleate Hot Spot, web page , accessed September 4, 2007. I have merged and converted the spreadsheets into a Google Earth kmz file: Don Anderson's Hotspot Compilation. Don's tabulated information is concatenated into the description field of the data set. In a couple of cases (Galapagos and Marquesas) I've noted that the posted locations appear to be displaced from what other workers have postulated.