Abstract
The interplay of plume and plate tectonics is discussed with reference to well-documented late Paleozoic and Mesozoic-Cenozoic structures. The considered issues include models of lower mantle plumes; the typical case of the Hawaii plume; plate motions in the Pacific basin under the effect of plume activity and subduction processes; the role of plumes in the breakup of continents and rifting for the cases of the East African rifts and Gondwana breakup; large continental igneous provinces of Siberia and Tarim, with meimechites and kimberlites; and the formation of large granitic batholiths and related metallogeny. The study contains several points of novelty: integrated use of lower mantle seismic tomography and satellite altimetry data on gravity patterns; correlation of plume heat with plate velocities assuming that some plumes may dissolve in the asthenosphere; and correlation of rifting with compression and extension zones.
Original language | English |
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Pages (from-to) | 502-526 |
Number of pages | 25 |
Journal | Russian Geology and Geophysics |
Volume | 61 |
Issue number | 5-6 |
DOIs | |
Publication status | Published - 1 May 2020 |
Keywords
- Compression
- Core
- Extension
- Gravity field
- Lower mantle
- Models of lower mantle plumes
- Plate tectonics
- Plume magmatism
- Plume tectonics
- Seismic tomography