Subduction and Eduction of Continental Crust

Lead PI: Dr. Hannes K. Brueckner

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

Unknown start date - Ongoing
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.


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




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


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.


orogenic peridotite continental subduction eclogite facies metamorphism