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Earth Institute Research Projects

Subduction and Eduction of Continental Crust

Lead PI: Dr. Hannes K. Brueckner

Unit Affiliation: Geochemistry, Lamont-Doherty Earth Observatory (LDEO)

Unknown start date - Ongoing
Active
Europe ; Norway ; Liverpool Land, Greenland ; Sweden
Project Type: Research

DESCRIPTION: An ongoing investigation of how continental crust subducts into the mantle, undergoes high pressure/ultrahigh pressure metamorphism and picks up peridotite from the overlying mantle wedge.

RESEARCH TEAM:

Yue Cai, Simon Cuthbert, Charlotte Møller, William Griffin, L. Gordon Medaris, Jr.

COLUMBIA UNIVERSITY COLLABORATORS:

Geochemistry

EXTERNAL COLLABORATORS:

Lund University, Sweden, University of Western Scotland, University of Wisconsin at Madison, Macquarie University, Australia.

PUBLICATIONS:

1). Brueckner, H.K., Medaris Jr., L.G., Belousova, E.A., Johnston, S.M., Griffin, W.L., Hartz, E.H., Hemming, S., Ghent, E. and Bubbico, R., 2016, An Orphaned Baltic Terrane in the Greenland Caledonides: A Sm-Nd and Detrital Zircon Study of a High-Pressure/ Ultrahigh-Pressure Complex in Liverpool Land. The Journal of Geology 124, 541–567.

2). Brueckner, H.K., 2018, The great eclogite debate of the Western Gneiss Region, Norwegian Caledonides: The in situ crustal v. exotic mantle origin controversy. J. Metamorphic Geol. 36: 517–527.

3). Brueckner, H.K., Medaris, L.G. Jr., Griffin, W.L., Johnston, S.M., Hartz, E.H., Pearson, N, Cai, Y., Andresen, A., 2018, Mechanical Mixing (?) of Garnet Peridotite and Pyroxenite in the Orogenic Peridotite Lenses of the Tvaerdal Complex, Liverpool Land, Greenland Caledonides. Journal of Petrology, 59/11, 2191–2220.

4). Medaris, L. Gordon, Jr., Brueckner, H.K., Cai, Y., Griffin, W.L., Janak, M., 2018, Eclogites in peridotite massifs in the Norwegian Caledonides; petrogenesis and comparison with those in the Variscan Moldanubian Zone. Lithos 322, 325-346.

KEYWORDS

orogenic peridotite continental subduction eclogite facies metamorphism