Lithospheric delamination and lithospheric stability

Last modified by whipp@helsinki_fi on 2024/02/07 06:27

Seminar info and schedule

For the winter semester 2016 we'll focus our reading and discussions on lithospheric delamination and lithospheric stability. The lithosphere is cycled back into the deeper mantle by two main processes: Subduction and delamination. Delamination refers to the process by which the lower portion of the lithosphere detaches and sinks into the asthenosphere. Delamination is thought to be an important process in the evolution and uplift of modern mountains like the central Andes or Sierra Nevada mountains in the western US, and may have also played a role in the earlier evolution of stable cratonic regions like Fennoscandia. In the course, we’ll read papers and discuss the delamination process and how it is thought to operate, the rheology of the lithosphere and its role in delamination, the predictions and evidence of lithospheric delamination in modern and ancient settings, and other important questions such as why doesn’t delamination occur in cratonic regions where the lithosphere is thick?

Seminars will take place at 12-14 in room CK108 of the Exactum. You may also want to see more information about the general format of the seminar.

A tentative schedule of readings is below.

Date	Discussion leader(s)	Topic and papers	Paper rating
21.1.2016	n/a	Organizational meeting.
28.1.2016	n/a	Selection of seminar meeting topic, suggested papers to discuss, ideas for other topics, etc.
4.2.2016	Eemu and Julien	Basic ideas of lithospheric delamination Ducea, M. N. (2011). Fingerprinting orogenic delamination. Geology, 39(2), 191-192 Bird, P. (1979). Continental delamination and the Colorado Plateau. J. geophys. Res, 84(B13), 7561-7571 Supplemental reading None	Ducea: 3.5 Bird: 3.0
11.2.2016	Cyprien and Simone	Delamination and delamination volcanism Kay, R. W., & Kay, S. M. (1993). Delamination and delamination magmatism. Tectonophysics, 219(1), 177-189 Supplemental reading None	3.3
18.2.2016	Guillem and Martin	Crustal eclogitization and lithospheric delamination Krystopowicz, N. J., & Currie, C. A. (2013). Crustal eclogitization and lithosphere delamination in orogens. Earth and Planetary Science Letters, 361, 195-207 Supplemental reading None	4.2
25.2.2016	Nelli and Jorina	Continental delamination: Insights from laboratory models Bajolet, F., Galeano, J., Funiciello, F., Moroni, M., Negredo, A. M., & Faccenna, C. (2012). Continental delamination: Insights from laboratory models. Geochemistry, Geophysics, Geosystems, 13(2) Supplemental reading None	3.3
3.3.2016	Dave and Lars	Convective lithospheric removal and the Colorado Plateau Levander, A., Schmandt, B., Miller, M.S., Liu, K., Karlstrom, K.E., Crow, R.S., Lee, C.T. and Humphreys, E.D., 2011. Continuing Colorado plateau uplift by delamination-style convective lithospheric downwelling. Nature, 472(7344), pp.461-465 Van Wijk, J.W., Baldridge, W.S., Van Hunen, J., Goes, S., Aster, R., Coblentz, D.D., Grand, S.P. and Ni, J., 2010. Small-scale convection at the edge of the Colorado Plateau: Implications for topography, magmatism, and evolution of Proterozoic lithosphere. Geology, 38(7), pp.611-614 Supplemental reading Houseman, G.A. and Molnar, P., 1997. Gravitational (Rayleigh–Taylor) instability of a layer with non-linear viscosity and convective thinning of continental lithosphere. Geophysical Journal International, 128(1), pp.125-150
17.3.2016	Eemu and Julien	Delamination beneath the Sierra Nevada mountains Saleeby, J., Ducea, M. and Clemens‐Knott, D., 2003. Production and loss of high‐density batholithic root, southern Sierra Nevada, California. Tectonics, 22(6) Supplemental reading None	3.1
31.3.2016	Dave	Rejuvenation and erosion of the cratonic lithosphere Foley, S.F., 2008. Rejuvenation and erosion of the cratonic lithosphere.Nature Geoscience, 1(8), pp.503-510 Supplemental reading None	3.2
7.4.2016	Cyprien and Simone	Dynamics of cratons in an evolving mantle O'Neill, C.J., Lenardic, A., Griffin, W.L. and O'Reilly, S.Y., 2008. Dynamics of cratons in an evolving mantle. Lithos, 102(1), pp.12-24 Supplemental reading None	3.0
14.4.2016	Guillem and Martin	Water in the mantle and its effect on the lithosphere Hirth, G. and Kohlstedt, D.L., 1996. Water in the oceanic upper mantle: implications for rheology, melt extraction and the evolution of the lithosphere. Earth and Planetary Science Letters, 144(1), pp.93-108 Peslier, A.H., Woodland, A.B., Bell, D.R. and Lazarov, M., 2010. Olivine water contents in the continental lithosphere and the longevity of cratons. Nature, 467(7311), pp.78-81 Supplemental reading None	Hirth: 3.1 Peslier: 2.9
21.4.2016	Lars	Does the mantle control the maximum thickness of cratons? Cooper C. M. and Conrad C. P., 2009. Does the mantle control the maximum thickness of cratons? Lithosphere, 1(2), pp. 67-72 Supplemental reading None	4.0
28.4.2016	Nelli and Jorina	Destruction of the North China Craton Zhu, R., Chen, L., Wu, F. and Liu, J., 2011. Timing, scale and mechanism of the destruction of the North China Craton. Science China Earth Sciences, 54(6), pp.789-797 Supplemental reading None	3.0

Papers under consideration

General background

Numerical models

Field evidence of delamination

Geophysical evidence of delamination

Lithospheric delamination and lithospheric stability

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