Physics
Scientific paper
May 1981
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981rspta.301..207d&link_type=abstract
(Royal Society, Discussion on the Origin and Evolution of the Earth's Continental Crust, London, England, Feb. 21, 22, 1980.) Ro
Physics
2
Earth Crust, Geochronology, Planetary Evolution, Plates (Tectonics), Precambrian Period, Continental Shelves, Histories, Paleontology, Stratification
Scientific paper
The reign of plate tectonics is extended to include the last 15% of earth history by interpretations that analogous tectonic regimes prevailed during the formation of Palaeozoic rocks and those latest Precambrian rocks involved in the so-called Pan-African orogenies. Plate tectonics is the surface expression of mantle convection driven by radiogenic heat. Any crustal rocks that predate plate tectonics must have formed while mantle convection was still too rapid to allow the development of surficial slabs cool enough to attain the rigidity of modern plates. Attention is given to crustal growth, petrogenetic processes, Precambrian assemblages, palaeowander paths, Archaean plates, and an evolutionary model.
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