Do plumes exist?

Time 2020-10-12 23:06:30

Web Name: Do plumes exist?

WebSite: http://www.mantleplumes.org

ID:79960

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Do,plumes,exist,

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Don L. Anderson Recent scholarly articles Popular articles Conferences Related links Bibliographies more Japanese Section Breaking Earth's shell into a global plate network C.A. Tang, A.A.G. Webb, W.B. Moore, Y.Y. Wang, T.H. Ma T.T. Chen Sanzhong Li, Weiwei Ding, Xiaoyu Guo Lijun Liu Enquiries: Please email Prof. Sanzhong Li C. Schiffer, A.G. Dor , G.R. Foulger, D. Franke, L. Geoffroy, L. Gernigon, R.E. Holdsworth, N. Kusznir, E. Lundin, K.J.W. McCaffrey, A.L. Peace, K. Petersen, T. Phillips, R. Stephenson, M. Stoker, J.K. Welford G.R. Foulger, A. Dor , C.H Emeleus, D. Franke, L. Geoffroy, L. Gernigon, R. Hey, R.E. Holdsworth, M. Hole, . H skuldsson, B.R. Julian, N. Kusznir, F. Martinez, K.J.W. McCaffrey, J.H. Natland, A.L. Peace, K. Petersen, C. Schiffer, R. Stephenson M. Stoker The relationship between Pangaea breakup and Large Igneous Provinces A.L. Peace, J.J.J. Phethean, D. Franke, G.R. Foulger, C. Schiffer, J.K. Welford, G. McHone, S. Rocchi, M. Schnabel A.G. Dor :: Quote of the week :: If you find a path with no obstacles, it probably doesn't go where no-one has gone before. Dear WM, The new webpage by Panedy Chalapathi Rao, and their accompanying paper Supercontinent transition: Links to ~1.1 Gyr diamondiferous kimberlites and related rocks in India, provide a very succinct summary of the geological setting of kimberlite fields in India, and the problems of linking alkaline volcanism to a plume. Andy Moore Dear WM, Last week we convened our EGU session The spectrum of obliquity: A multidisciplinary approach from orthogonal rifts to transform tectonics in continental and oceanic settings . We draw your attention to a proposed special issue in EGU s journal Solid Earth on the same topic. We welcome the session contributors and the wider geo-tectonics community to submit papers to this special issue. To express interestplease contact Alexander L. Peace Dear WM, I bring to your attention a quote I found in Shoemaker, E.M., 1962, Interpretation of lunar craters, in Physics and Astronomy of the Moon, Ed. Zdenek Kopal. Academic Press, N.Y. London, pp. 283-359. It has been remarked that the majority of astronomers explain the craters of the moon by volcanic eruption that is, by an essentially geological process while a considerable number of geologists are inclined to explain them by the impact of bodies falling on the moon that is, by an essentially astronomical process. This suggests that each group of scientists find the craters so difficult to explain by processes with which they are professionally familiar that they have recourse to a process belonging in another field than their own, with which they are probably imperfectly acquainted, and with which they therefore feel freer to take liberties. (from Davis, W.M., 1926, Biographical memoir of Grove Karl Gilbert, 1843-1918. Mem. Nat. Acad. Sci. 21, 5th Mem., 303 pp.) Bruce Julian Dear WM, I bring to your attention the recent paper Nkere, B. J., W. L. Griffin, and P. E. Janney (2019), Emplacement age of the Tshibwe kimberlite, Democratic Republic of Congo, by in-situ LAM-ICPMS U/Pb dating of groundmass perovskite, Journal of African Earth Sciences, 157, 103502.. The paper is almost matter-of-fact about tectonic triggers and plumes do not even warrant a consideration, which would have been heresy 10 years ago. Andy Moore It is well-known that time-progressive volcanic trails are considered by many to be diagnostic of fixed mantle plumes, and that non-time progression is not considered to weigh against the plume hypothesis, but time progression in the opposite direction from that expected???? (Sinton, C. W., F. Hauff, K. Hoernle, and R. Werner (2018), Age progressive volcanism opposite Nazca plate motion: Insights from seamounts on the northeastern margin of the Galapagos Platform, Lithos, 310-311, 342-354.) ::more::

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