Kenni Dinesen Petersen
LIP formation and protracted lower mantle upwelling induced by rifting and delamination
Petersen, Kenni Dinesen; Schiffer, Christian; Nagel, Thorsten
Authors
Christian Schiffer
Thorsten Nagel
Abstract
Large Igneous Provinces (LIPs) are commonly attributed to mantle plumes, hot upwellings from the deep lower mantle, apparently unrelated to plate motions. However, LIPs often form in association with rifting and breakup. Using numerical modelling, we introduce a novel idea that explains plume-like mantle upwelling by plate tectonic processes. Our model indicates that rifting-induced delamination of orogenic lithosphere can perturb the thermochemical mantle stratification and induce lower mantle upwelling which causes syn-rift LIP formation followed by protracted and enhanced mid ocean ridge basalt (MORB) generation. Our model provides an explanation for the geographical correlation between the Caledonian suture, the North Atlantic Igneous Province (NAIP) and present-day Icelandic magmatism.
Citation
Petersen, K. D., Schiffer, C., & Nagel, T. (2018). LIP formation and protracted lower mantle upwelling induced by rifting and delamination. Scientific Reports, 8(1), Article 16578. https://doi.org/10.1038/s41598-018-34194-0
| Journal Article Type | Article |
|---|---|
| Acceptance Date | Oct 12, 2018 |
| Online Publication Date | Nov 8, 2018 |
| Publication Date | Nov 8, 2018 |
| Deposit Date | Nov 22, 2018 |
| Publicly Available Date | Nov 22, 2018 |
| Journal | Scientific Reports |
| Electronic ISSN | 2045-2322 |
| Publisher | Nature Research |
| Peer Reviewed | Peer Reviewed |
| Volume | 8 |
| Issue | 1 |
| Article Number | 16578 |
| DOI | https://doi.org/10.1038/s41598-018-34194-0 |
| Public URL | https://durham-repository.worktribe.com/output/1308877 |
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