Mantle upwellings are an important component of the Earth’s convective system that can cause volcanism and anomalies in surface topography. Upwellings can rise from thermal boundary layers as hot “mantle plumes”. Alternatively, they can be the response to upper-mantle convective flow, subduction, or rifting. Clearly, different mechanisms sustain mantle upwellings of various temperature, vigour and composition, causing characteristic signals that can potentially be imaged using geophysical data, as well as expressed in the geochemistry and petrology of related magmatism.

This session invites contributions that focus on mantle upwellings from geophysics, geochemistry, and modelling perspectives. Our aim is to bring together constraints from multiple disciplines to understand the origin and dynamics of mantle upwellings, as well as their potential to trigger mantle melting, create volcanism, generate ore deposits, and build dynamic topography.

Co-organized as GMPV2.8/PS1.13/SM4.12/TS9.4
Convener: Maxim Ballmer | Co-conveners: Maria Tsekhmistrenko, Catherine Chauvel, Sebastien Pilet, Catherine A. Rychert, Karin Sigloch, Bernhard Steinberger, Vincent Strak
| Thu, 11 Apr, 10:45–12:30
Room -2.32
| Attendance Fri, 12 Apr, 10:45–12:30
Hall X2

Attendance time: Friday, 12 April 2019, 10:45–12:30 | Hall X2

Chairperson: Rychert, Sigloch
X2.270 |
Richard Gordon, Daniel Woodworth, Kevin Gaastra, and Lily Seidman
X2.271 |
Megan Holdt, Nicky White, and Simon Stephenson
X2.272 |
| Highlight
Maria Tsekhmistrenko, Kasra Hosseini, Karin Sigloch, and Guilhem Barruol
X2.276 |
Maxim Ballmer, Antonio Manjón Cabeza Córdoba, and Esteban Gazel
X2.277 |
Patricia Hannah Galbraith-Olive, Nicky White, Andy Woods, and Charlotte Schoonman
X2.278 |
Xiaogang Long, Maxim Ballmer, Antonio Manjón Cabeza Córdoba, and Chun-Feng Li
X2.280 |
| Highlight
Elizabeth Thompson, Eva Bredow, Neala Creasy, Karen Godfrey, James Muller, Man Xu, Chengzu Wang, Maxim Ballmer, Shichun Huang, Gabriele Morra, and Sujoy Mukhopadhyay
X2.281 |
Aurore Sibrant, Marcia Maia, Eric Mittelstaedt, Anne Davaille, and Neil Ribe
X2.282 |
Claudia Stein and Ulrich Hansen
X2.284 |
Neil Ribe, Paul Tackley, and Patrick Sanan
X2.285 |
Compositional heterogeneity near the base of the mantle transition zone beneath Hawaii
Chunquan Yu, Elizabeth Day, Maarten de Hoop, Michel Campillo, Saskia Goes, Rachel Blythe, and Robert van der Hilst
X2.286 |
| Highlight
Philip Heron, Juliane Dannberg, Rene Gassmoller, Grace Shephard, Jeroen van Hunen, and Russell Pysklywec