Crust Formation and Plate Motion in the Early Archean

  title={Crust Formation and Plate Motion in the Early Archean},
  author={A. Kr�ner and Paul W. Layer},
  pages={1405 - 1411}
Mounting evidence for voluminous continental crust formation in the early Archean involving intracrustal melting and selective preservation of granitoid rocks suggests that initial crust formation crust formation and growth were predominantly by magmatic underplating in plumegenerated Iceland-type settings. Collision of these early islands to give rise to larger blocks is suggested by extensive horizontal shortening in both supracrustal and granitoid assemblages. Preservation of early Archean… 
Evolution of the Precambrian lithosphere: Seismological and geochemical constraints
Several recent models of crustal evolution are based on the belief that the thickness of the continental crust is proportional to its age, with ancient crust being the thickest. A worldwide review of
Archean geodynamics: Similar to or different from modern geodynamics?
There is a wealth of geologic, geochemical, structural, volcanologic, and sedimentologic data that are consistent with Archean plate tectonics, especially after 3.0 Ga. Neither the eruption of
eneration of felsic crust in the Archean : A geodynamic modeling erspective
As a consequence of secular cooling of the Earth, there is generally no modern analog to assist in understanding the tectonic style that may have operated in the Archean. Higher mantle temperatures
Archean Geodynamics and the Thermal Evolution of Earth
Possible geodynamic regimes that may have prevailed in the Archean are investigated by back-tracking the thermal history of Earth from the present-day conditions. If the temporal evolution of
The Evolution of the Continental Crust and the Onset of Plate Tectonics
Approaches that indicate when plate tectonics became the dominant global regime are explored, in part by evaluating when the effects of plateTectonics were established globally, rather than the first sign of its existence regionally.


Very early Archean crustal-accretion complexes preserved in the North Atlantic craton
The North Atlantic craton contains very early Archean supracrustal rocks, orthogneisses, and massive ultramafic rocks. Most units of supracrustal rocks are dominated by mafic volcanic rocks, layered
Remnants of an Archean oceanic plateau, Belingwe greenstone belt, Zimbabwe
Stratigraphic and structural data from the Archean Zimbabwe craton suggest that a major detachment surface exists within the Belingwe greenstone belt. The surface separates ultramafic and mafic
Archean Plate Tectonics: Constraints and Inferences
The earth has been cooling since Archean time. The higher temperatures beneath Archean ridges resulted in more partial melting which extended down to greater depths than at present. The Archean
Evolution of the Archean Continental Crust
Some 20 years of plate tectonic theory, combined with new insights into the fine structure of the lithosphere, the application of multielement geo­ chemical and isotopic studies, paleomagnetism, and
Growth and differentiation of the continental crust
  • J. Dewey, B. Windley
  • Geology
    Philosophical Transactions of the Royal Society of London. Series A, Mathematical and Physical Sciences
  • 1981
Declining radiogenic heat production since the Archaean has resulted in a secular evolution from a régime of numerous fast-moving small thin torsionally weak plates to the present régime of larger