Secular changes in relationships between plate-tectonic and mantle-plume engendered processes during Precambrian time
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dc.contributor.author | Mints Mikhail V. | |
dc.contributor.author | Eriksson Patrick G. | |
dc.date.accessioned | 2019-12-23T04:28:33Z | |
dc.date.available | 2019-12-23T04:28:33Z | |
dc.date.issued | 2016 | |
dc.identifier | https://cyberleninka.ru/article/n/secular-changes-in-relationships-between-plate-tectonic-and-mantle-plume-engendered-processes-during-precambrian-time | |
dc.identifier | Федеральное государственное бюджетное учреждение науки Институт земной коры Сибирского отделения Российской академии наук | |
dc.identifier.citation | Геодинамика и тектонофизика, 2016, 7, 2 | |
dc.identifier.uri | https://repository.geologyscience.ru/handle/123456789/9546 | |
dc.description.abstract | Paradoxically, the lists of "proxies" of both plateand plume-related settings are devoid of even a mention of the high-grade metamorphic rocks (granulite, amphibolite and high-temperature eclogite facies). However, the granulite-gneiss belts and areas which contain these rocks, have a regional distribution in both the Precambrian and the Phanerozoic records. The origin and evolution of the granulite-gneiss belts correspond to the activity of plumes expressed in vigorous heating of the continental crust; intraplate magmatism; formation of rift depressions filled with sediments, juvenile lavas, and pyroclastic flow deposits; and metamorphism of lower and middle crustal complexes under conditions of granulite and high-temperature amphibolite facies that spreads over the fill of rift depressions also. Granulite-gneiss complexes of the East European Craton form one of the main components of the large oval intracontinental tectonic terranes of regional or continental rank. Inclusion of the granulite-gneiss complexes from Eastern Europe, North and South America, Africa, India, China and Australia in discussion of the problem indicated in the title to this paper, suggests consideration of a significant change in existing views on the relations between the plateand plume-tectonic processes in geological history, as well as in supercontinent assembly and decay. The East European and North American cratons are fragments of the long-lived supercontinent Lauroscandia. After its appearance at ~2.8 Ga, the crust of this supercontinent evolved under the influence of the sequence of powerful mantle plumes (superplumes) up to ~0.85 Ga. During this time Lauroscandia was subjected to rifting, partial breakup and the following reconstruction of the continent. The processes of plate-tectonic type (rifting with the transition to spreading and closing of the short-lived ocean with subduction) within Lauroscandia were controlled by the superplumes. Revision of the nature of the granulite-gneiss complexes has led to a fundamental new understanding of: a more important role than envisaged previously for mantle-plume processes in the juvenile additions to the continental crust, especially during the Neoarchaean-Proterozoic; the existence of the supercontinent Lauroscandia from ~2.80 to 0.85 Ga; the leading role of mantle plumes in the interaction of plateand plume-tectonics in the Neoarchaean-Proterozoic history of Lauroscandia and perhaps of the continental crust as a whole. We propose that the evolution of the geodynamic settings of the Earth's crust origin can be represented as a spiral sequence: the interaction of mantle-plume processes and embryonic microplate tectonics during the Palaeo-Mezoarchaean (~3.8-2.8 Ga) → plume-tectonics and local plume-driven plate-tectonics (~2.80-0.55 Ga) → Phanerozoic plate tectonics along with a reduced role of mantle plumes. | |
dc.publisher | Федеральное государственное бюджетное учреждение науки Институт земной коры Сибирского отделения Российской академии наук | |
dc.subject | PRECAMBRIAN | |
dc.subject | PLATE-TECTONICS | |
dc.subject | PLUME-TECTONICS | |
dc.subject | GRANULITE-GNEISS BELTS | |
dc.subject | SUPERCONTINENT | |
dc.subject | INTRACONTINENT OVAL OROGEN | |
dc.subject | ДОКЕМБРИЙ | |
dc.subject | ТЕКТОНИКА ПЛИТ | |
dc.subject | ТЕКТОНИКА ПЛЮМОВ | |
dc.subject | ГРАНУЛИТО-ГНЕЙСОВЫЙ ПОЯС | |
dc.subject | СУПЕРКОНТИНЕНТ | |
dc.subject | ВНУТРИКОНТИНЕНТАЛЬНЫЙ ОВАЛЬНЫЙ ОРОГЕН | |
dc.title | Secular changes in relationships between plate-tectonic and mantle-plume engendered processes during Precambrian time | |
dc.type | text | |
dc.type | Article | |
dc.subject.age | Докембрий | ru |
dc.subject.age | Precambrian | en |
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