Critical tests of vertical vs. horizontal tectonic models for the Archaean East Pilbara Granite–Greenstone Terrane, Pilbara Craton, Western Australia

Kranendonk, Martin J. Van; Collins, William J.; Hickman, Arthur H.; Pawley, Mark J.

doi:10.1016/j.precamres.2003.12.015

Cited by 236 publications

(119 citation statements)

References 74 publications

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“…At the other end of the spectrum, many propose instead dome-and-basin type structures for the early Earth, where the development of diapir-type features associated with buoyant gneissic domes led to gravitational instability and what is often called 'sagduction' of the intervening sediment basins (Chardon et al, 1996(Chardon et al, , 1998. This peculiar type of 'tectonics' was more prevalent in the Archaean (e.g., Bouhallier et al, 1995;Chardon et al, 1996;Chadwick et al, 2000;Thébauda & Reyb, 2013;Van Kranendonk et al, 2004) but some examples exist from the Palaeoproterozoic (Vidal et al, 2009) and also parts of the 'hotter' and 'weaker' Palaeoproterozoic and Mesoproterozoic crust in Fennoscandia (Cagnard et al, 2007;. Some believe that 'modern' subduction tectonics, and therefore, modern fold and thrust belts, did not appear until the Neoproterozoic (Stern, 2005;Vidal et al, 2009).…”

Section: Implications For Palaeoproterozoic Tectonicsmentioning

confidence: 99%

A new tectonic model for the Palaeoproterozoic Kautokeino Greenstone Belt, northern Norway, based on high-resolution airborne magnetic data and field structural analysis and implications for mineral potential

Henderson¹,

Viola²,

Nasuti³

2016

NJG

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Section: Implications For Palaeoproterozoic Tectonicsmentioning

confidence: 99%

A new tectonic model for the Palaeoproterozoic Kautokeino Greenstone Belt, northern Norway, based on high-resolution airborne magnetic data and field structural analysis and implications for mineral potential

Henderson¹,

Viola²,

Nasuti³

2016

NJG

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“…The other school believes that the "dome-and-basin" structure is peculiar to the Archean, particularly the older parts, and reflects unusual conditions in the continental crust of that time (Bouhallier et al, 1983;Choukroune et al, 1995Choukroune et al, , 1997Chardon et al, 2002;Van Kranendonk et al, 2004;Robin and Bailey, 2009). Vertical rather than horizontal movements are thought to dominate the deformation.…”

Section: The Structure Of Archean Granite-greenstone Beltsmentioning

confidence: 99%

Formation and Evolution of the Continental Crust

Arndt¹

2013

GeochemPersp

230

117

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“…Most of today's heat loss occurs in and around oceanic spreading centers, whereas, because heat flow decreases approximately with the square root of crustal age, thermal fluxes in older parts of the oceanic crust and in continental assemblies possessing depleted keels are substantially lower. Thus mantle heat flow through the sialic crust represents a minor global contribution (Sclater et al 1980;Van Kranendonk et al 2004).…”

Section: Terrestrial Heat Content and Mantle Circulationmentioning

confidence: 99%

Plate-tectonic evolution of the Earth: bottom-up and top-down mantle circulation

2016

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Abstract:Intense devolatilization and chemical-density differentiation attended accretion of planetesimals on the primordial Earth. These processes gradually abated after cooling and solidification of an early magma ocean. By 4.3 or 4.2 Ga, water oceans were present, so surface temperatures had fallen far below low-pressure solidi of dry peridotite, basalt, and granite, ϳ1300, ϳ1120, and ϳ950°C, respectively. At less than half their T solidi, rocky materials existed as thin lithospheric slabs in the near-surface Hadean Earth. Stagnant-lid convection may have occurred initially but was at least episodically overwhelmed by subduction because effective, massive heat transfer necessitated vigorous mantle overturn in the early, hot planet. Bottom-up mantle convection, including voluminous plume ascent, efficiently rid the Earth of deep-seated heat. It declined over time as cooling and top-down lithospheric sinking increased. Thickening and both lateral extensional + contractional deformation typified the post-Hadean lithosphere. Stages of geologic evolution included (i) 4.5-4.4 Ga, magma ocean overturn involved ephemeral, surficial rocky platelets; (ii) 4.4-2.7 Ga, formation of oceanic and small continental plates were obliterated by return mantle flow prior to ϳ4.0 Ga; continental material gradually accumulated as largely sub-sea, sialic crust-capped lithospheric collages; (iii) 2.7-1.0 Ga, progressive suturing of old shields + younger orogenic belts led to cratonal plates typified by emerging continental freeboard, increasing sedimentary differentiation, and episodic glaciation during transpolar drift; onset of temporally limited stagnant-lid mantle convection occurred beneath enlarging supercontinents; (iv) 1.0 Ga-present, laminar-flowing asthenospheric cells are now capped by giant, stately moving plates. Near-restriction of komatiitic lavas to the Archean, and appearance of multicycle sediments, ophiolite complexes ± alkaline igneous rocks, and high-pressure-ultrahigh-pressure (HP-UHP) metamorphic belts in progressively younger Proterozoic and Phanerozoic orogens reflect increasing negative buoyancy of cool oceanic lithosphere, but decreasing subductability of enlarging, more buoyant continental plates. Attending supercontinental assembly, density instabilities of thickening oceanic plates began to control overturn of suboceanic mantle as cold, top-down convection. Over time, the scales and dynamics of hot asthenospheric upwelling versus lithospheric foundering + mantle return flow (bottom-up plume-driven ascent versus top-down plate subduction) evolved gradually, reflecting planetary cooling. These evolving plate-tectonic processes have accompanied the Earth's thermal history since ϳ4.4 Ga.Résumé : Un intense dégagement de matières volatiles et une différentiation selon la densité chimique faisait partie de l'accrétion de planétésimaux à la Terre primordiale. Ces processus ont grandement diminué après le refroidissement et la solidification d'un océan primitif de magma. Vers 4,3 ou 4,2 Ga, il existait des océan...

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Critical tests of vertical vs. horizontal tectonic models for the Archaean East Pilbara Granite–Greenstone Terrane, Pilbara Craton, Western Australia

Cited by 236 publications

References 74 publications

A new tectonic model for the Palaeoproterozoic Kautokeino Greenstone Belt, northern Norway, based on high-resolution airborne magnetic data and field structural analysis and implications for mineral potential

A new tectonic model for the Palaeoproterozoic Kautokeino Greenstone Belt, northern Norway, based on high-resolution airborne magnetic data and field structural analysis and implications for mineral potential

Formation and Evolution of the Continental Crust

Plate-tectonic evolution of the Earth: bottom-up and top-down mantle circulation

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