dc.contributor.author | Eide, Elizabeth A. | |
dc.contributor.author | Torsvik, Trond H. | |
dc.date.accessioned | 2020-07-15T08:12:26Z | |
dc.date.available | 2020-07-15T08:12:26Z | |
dc.date.issued | 1998 | |
dc.identifier.issn | 0800-3416 | |
dc.identifier.uri | https://hdl.handle.net/11250/2665590 | |
dc.description.abstract | In this report we synthesize palaeogeographic reconstructions over the last 500 million years. These reconstructions are global and should be regarded as first-order approximations. Reconstructions are essentially derived from 5 sources: (1) palaeomagnetic data, (2) magnetic anomaly data, (3) hot spot tracks, (4) biogeographic-tectonic data and (5) continental 'coast-line' fitting. Palaeomagnetic data provide quantitative information on palaeolatitude and palaeo-rotation of a continent, while palaeolongitude is unconstrained. The Palaeozoic reconstructions are essentially grounded in palaeomagnetic data combined with biogeographic-tectonic data. The Late Palaeozoic to Early-Mid Mesozoic reconstructions are based on a combi- nation of palaeomagnetic, magnetic anomaly data and 'coast-line fits. Finally, Cretaceous and younger reconstructions (130-10.5 Ma) are 'absolute' reconstruc- tions in a hot-spot\/magnetic anomaly reference scheme. The latter reconstruc- tions rely on the assumption that hot-spots are stationary or move at rates that are insignificant compared with plate-tectonic movements. Data analyses, reconstructions and most figures were produced with the GMAP software of Torsvik & Smethurst (1998) which is located on http:\/\/www.ngu.no\/ geophysics or http:\/\/dragon.ngu.no. | |
dc.language.iso | eng | |
dc.relation.ispartofseries | NGU-Rapport (98.001) | |
dc.rights | Navngivelse 4.0 Internasjonal | |
dc.rights.uri | http://creativecommons.org/licenses/by/4.0/deed.no | |
dc.title | Phanerozoic palaeogeography and geodynamics with Atlantic details | |
dc.type | Report | |
dc.description.localcode | 44989 | |
dc.source.pagenumber | 82 | |