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Earth Institute Research Projects

Collaborative Research: How is Rifting Exhuming the Youngest HP/UHP Rocks on Earth?

Lead PI: Geoffrey A. Abers , Terry A. Plank

Unit Affiliation: Seismology, Geology & Tectonophysics, Lamont-Doherty Earth Observatory (LDEO)

January 2008 - June 2014
Inactive
Asia ; Southeast Asia ; Papua New Guinea
Project Type: Research

DESCRIPTION: The project used seismographs to determine how rifting is exhuming high-Pressure rocks.

OUTCOMES: Data has been extracted from seismographs and integrated into a data set, although data recovery was hampered by weather and theft. Crustal thickness was mapped well, and OBS show coherent signals related to structure. Found that directions that indicate large-scale corner flow related to rifting.

SPONSOR:

National Science Foundation (NSF)

FUNDED AMOUNT:

$1,063,824

EXTERNAL COLLABORATORS:

Syracuse University, University of California - Santa Barbara, University of Texas - Austin, University of Papua New Guinea, GNS New Zealand

WEBSITE:

https://www.nsf.gov/awardsearch/showAward?AWD_ID=0814236&HistoricalAwards=false

PUBLICATIONS:

Brownlee, S.J., B.R. Hacker, M. Salisbury, G. Seward, T.A. Little, S.L. Baldwin, and G.A. Abers. "Predicted velocity and density structure of the exhuming Papua New Guniea ultrahigh-pressure terrane," J. Geophys. Res., v.116, 2011, p. B08206.

Eilon, Z.,G.A. Abers, G. Jin and J. Gaherty. "Anisotropy and flow beneath a rapidly extending rift," Geochem. Geophys. Geosyst., v.15, 2014, p. 545. doi:10.1002/2013GC005092

KEYWORDS

seismology geology and tectonics rifting ocean bottom seismographs seismograms

THEMES

Earth fundamentals