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::A glance at today's paper::  

Day J.M.D., Barry P.H., Hilton D.R., Pearson D.G., Burgess R., Taylor L.A. (2015) The helium flux from the continents and ubiquity of low-3He/4He recycled crust and lithosphere. Geochimica et Cosmochimica Acta, 153, 116-133.

Don L. Anderson

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:: Notice Board ::

Helium in the continents and in recycled crust and lithosphere

J.M.D. Day & D.R. Hilton

A short comment on geochemistry & plumes

Michele Lustrino

The absence of mantle plumes beneath the European Cenozoic Rift System

A. Fichtner & A. Villasenor

The Norway Basin and the Jan Mayen “microcontinent”: Insights from new high-resolution aeromagnetic surveys

L. Gernigon, A. Blischke, A. Nasuti & M. Sand

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Unravelling the complexity of upper crustal dike networks in continental rifts: examples from East Africa

J.D. Muirhead, S.A. Kattenhorn & N. Le Corvec


Special issue of the Journal of Geological Society of London

Contributions solicited Click here for details

Strain Localization at the Margins of Strong Lithospheric Domains: Insights From Analog Models

E.Calignano, D.Sokoutis, E.Willingshofer, F.Gueydan, S.Cloetingh

Recycling of oceanic crust from a stagnant slab in the mantle transition zone: Evidence from Cenozoic continental basalts in Zhejiang Province, SE China

Y.-Q. Li, C.-Q. Ma, P.T. Robinson, Q. Zhou, M.-L. Liu

Are continental "adakites" derived from thickened or foundered lower crust?

Q. Ma, J.-P. Zheng, Y.-G. Xu, W.L. Griffin & R.-S. Zhang

The longevity of Archean mantle residues in the convecting upper mantle and their role in young continent formation

J. Liu, J.M. Scott, C.E. Martin & D.G. Pearson

Curious styles of spreading in and around Iceland

G.R. Foulger

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Check out the Wikipedia Talk:Mantle plume controversy page and add your three ha'pence worth–or 10¢ if you work in bucks.–Gillian R. Foulger
Dear WM, A new gravity map shows thousands more of seamounts, mostly not in linear chains, as summarized in this news article. The great majority of seamounts are scattered across the oceans in independent groups and individual volcanoes. They are not part of linear volcanic chains, and we should note that magmas of most seamount volcanoes appear to be similar and must form the same way. This fact does not support the wildly generalized models in which intraplate volcanoes are created by narrow, deep mantle plumes. Instead, we must develop models that link lithospheric structures to linear volcanic chains where such exist, and also allow most volcanoes to form as individual features, all in a common origin from the upper mantle.–Greg McHone
Dear WM, in the recent paper by Courtillot & Fluteau, the 59th plume type is defined–the "killer plume".–Michele Lustrino