Multiple volcanic episodes of flood basalts caused by thermochemical mantle plumes
dc.contributor.author | Lin, Shu-Chuan | en_US |
dc.contributor.author | van Keken, Peter E. | en_US |
dc.date.accessioned | 2009-06-01T17:32:44Z | |
dc.date.available | 2009-06-01T17:32:44Z | |
dc.date.issued | 2005-07-14 | en_US |
dc.identifier.citation | Lin, SC; van Keken, PE. (2005) "Multiple volcanic episodes of flood basalts caused by thermochemical mantle plumes." Nature 436(7048): 250-252. <http://hdl.handle.net/2027.42/62705> | en_US |
dc.identifier.issn | 0028-0836 | en_US |
dc.identifier.uri | https://hdl.handle.net/2027.42/62705 | |
dc.identifier.uri | http://www.ncbi.nlm.nih.gov/sites/entrez?cmd=retrieve&db=pubmed&list_uids=16015328&dopt=citation | en_US |
dc.description.abstract | The hypothesis that a single mushroom-like mantle plume head can generate a large igneous province within a few million years has been widely accepted(1). The Siberian Traps at the Permian Triassic boundary(2) and the Deccan Traps at the Cretaceous Tertiary boundary(3) were probably erupted within one million years. These large eruptions have been linked to mass extinctions. But recent geochronological data(4-11) reveal more than one pulse of major eruptions with diverse magma flux within several flood basalts extending over tens of million years. This observation indicates that the processes leading to large igneous provinces are more complicated than the purely thermal, single-stage plume model suggests. Here we present numerical experiments to demonstrate that the entrainment of a dense eclogite-derived material at the base of the mantle by thermal plumes can develop secondary instabilities due to the interaction between thermal and compositional buoyancy forces. The characteristic timescales of the development of the secondary instabilities and the variation of the plume strength are compatible with the observations. Such a process may contribute to multiple episodes of large igneous provinces. | en_US |
dc.format.extent | 335044 bytes | |
dc.format.extent | 2489 bytes | |
dc.format.mimetype | application/octet-stream | |
dc.format.mimetype | text/plain | |
dc.publisher | Nature Publishing Group | en_US |
dc.source | Nature | en_US |
dc.title | Multiple volcanic episodes of flood basalts caused by thermochemical mantle plumes | en_US |
dc.type | Article | en_US |
dc.subject.hlbtoplevel | Science | en_US |
dc.description.peerreviewed | Peer Reviewed | en_US |
dc.contributor.affiliationum | Univ Michigan, Dept Geol Sci, Ann Arbor, MI 48109 USA | en_US |
dc.identifier.pmid | 16015328 | en_US |
dc.description.bitstreamurl | http://deepblue.lib.umich.edu/bitstream/2027.42/62705/1/nature03697.pdf | |
dc.identifier.doi | http://dx.doi.org/10.1038/nature03697 | en_US |
dc.identifier.source | Nature | en_US |
dc.contributor.authoremail | skylin@umich.edu | en_US |
dc.owningcollname | Interdisciplinary and Peer-Reviewed |
Files in this item
Remediation of Harmful Language
The University of Michigan Library aims to describe library materials in a way that respects the people and communities who create, use, and are represented in our collections. Report harmful or offensive language in catalog records, finding aids, or elsewhere in our collections anonymously through our metadata feedback form. More information at Remediation of Harmful Language.
Accessibility
If you are unable to use this file in its current format, please select the Contact Us link and we can modify it to make it more accessible to you.