Cumberland batholith, Trans-Hudson Orogen, Canada: Petrogenesis and implications for Paleoproterozoic crustal and orogenic processes

Whalen, J B; Wodicka, N; Taylor, Bruce E.; Jackson, G. D.

doi:10.1016/j.lithos.2010.02.008

Cited by 67 publications

(39 citation statements)

References 55 publications

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“…The wide distribution and lack of zonation exhibited by the ca. 280 Ma Alxa Block magmatic rocks also argue against a slab break-off model (e.g., von Blanckenburg and Davis, 1995;Whalen et al, 2006Whalen et al, , 2010. This model predicts a relatively narrow, linear zone of magmatism and uplift that is located along a suture zone.…”

Section: Bijiertai Complexmentioning

confidence: 99%

“…This model predicts a relatively narrow, linear zone of magmatism and uplift that is located along a suture zone. Two models could be proposed to account for intense post-collisional magmatism and the tectonic evolution, including (a) the detachment of an orogenic root zone or lithospheric delamination (e.g., Aydin et al, 2008;Whalen et al, 2006Whalen et al, , 2010Zhang et al, 2007), and (b) a mantle plume (e.g., Bryan et al, 2002;Li et al, 2003). Both processes may cause an upwelling of the asthenosphere and partial melting of various sources (Bonin, 2004), and yield similar magma evolution trends.…”

Section: Bijiertai Complexmentioning

confidence: 99%

See 1 more Smart Citation

An Early Permian (ca. 280Ma) silicic igneous province in the Alxa Block, NW China: A magmatic flare-up triggered by a mantle-plume?

Wei

Wang

et al. 2014

Lithos

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Section: Bijiertai Complexmentioning

confidence: 99%

Section: Bijiertai Complexmentioning

confidence: 99%

An Early Permian (ca. 280Ma) silicic igneous province in the Alxa Block, NW China: A magmatic flare-up triggered by a mantle-plume?

Wei

Wang

et al. 2014

Lithos

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“…1.97-1.90 Ga magmatic rocks in the entire Khondalite Belt, a model of slab break-off is proposed, which predicts a relatively narrow, linear zone of magmatism located along a suture zone (e.g., von Blanckenburg and Davis, 1995;Atherton and Ghani, 2002;Chung et al, 2005;Keskin et al, 2008;Xu et al, 2008;Whalen et al, 2006Whalen et al, , 2010Yuan et al, 2010). Several lines of evidence support this scenario.…”

Section: Source Components For S-type Granitesmentioning

confidence: 99%

Paleoproterozoic S-type granites in the Helanshan Complex, Khondalite Belt, North China Craton: Implications for rapid sediment recycling during slab break-off

Wei

Wang

et al. 2014

Precambrian Research

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a b s t r a c t S-type granites, typically derived from the rapid recycling of sedimentary rocks, are sometimes accompanied by contemporary mafic magmatism and granulite metamorphism. However, the geodynamic context for such rock suites is often highly disputed, with various model proposed, including back-arc basin opening, lithospheric delamination, mantle plume and continental rifting. The Paleoproterozoic Khondalite Belt in the North China Craton provides an example of synchronous mafic and felsic magmatism that was accompanied by granulite-facies metamorphic events for which the tectonic affinities of these rocks remains unclear. This study integrates in situ zircon Hf-O isotope analyses, whole-rock geochemistry and Nd isotope results for the earliest two-mica granites (ca. 1.95 Ga) in order to provide constraints on the above issues. The granites are strongly peraluminous (A/CNK value >1.1), and characterized by high zircon ␦18 O values of 7.3-10.6‰, corresponding to calculated magmatic ␦ 18 O values of 9.1-12.3‰, similar to those of typical S-type granites. They have relatively high and homogeneous ε Nd (t) values of −1.1 to +0.9 and highly variable zircon ε Hf (t) values ranging from −1.0 to +8.3. In situ zircon Hf-O isotopic compositions indicate that the S-type granites may contain some mantle or juvenile crustal components in addition to a sediment component. Based on the new results and published data, a slab break-off model is proposed to explain the rapid recycling of sedimentary precursors and the generation of the ca. 1.95 Ga S-type granites.

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“…However, the batholith was emplaced between c. 1.865 and 1.845 Ga and the intrusions seem too young to be the source of the detrital zircon populations in the Nûkavsak Formation. Moreover, their petrogenesis favours formation in a post-accretion setting rather than in a magmatic arc Whalen et al 2010). The Cumberland Batholith may well have formed in a post-accretion setting but it appears to have diverse protoliths formed during earlier continental margin processes, including abundant inherited components with the age range 1.9 -2.0 Ga required to source the Palaeoproterozoic detrital zircons in the Nûkavsak Formation.…”

Section: Discussionmentioning

confidence: 99%

Basin evolution and destruction in an Early Proterozoic continental margin: the Rinkian fold–thrust belt of central West Greenland

Grocott

McCaffrey

2017

JGS

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In central West Greenland, early Palaeoproterozoic siliciclastic and carbonate sequences of the Karrat Group (shelf sequences of the Rae craton margin) were deposited in sedimentary basins controlled by NW-and SW-trending linked extensional fault systems. The shelf basins were later filled and overtopped by turbidite systems filling a foredeep advancing ahead of a thrust system -the Karrat Fjord thrust system -that propagated west to east. Deformation culminated in emplacement of basement-cored nappes, progressive deformation and high-grade metamorphism at c. 1.87 Ga. Reactivation of lower plate growth faults formed dome-and basin-like folds and related thrusts that refolded the structure of the Karrat Fjord thrust system and inverted the shelf basins. The southern Karrat Fjord thrust system was reworked in a belt of intense ductile NW-directed thrusting -the Nunaarsussuaq thrust system -formed at c. 1.84 Ga at the northern limit of the Nagssugtoqidian orogen. Kinematics of these events are at odds with the consensus view that the Rinkian fold-thrust belt is a northward extension of the Nagssugtoqidian orogen resulting from northsouth convergence between the Rae and North Atlantic cratons. Application of structural restoration techniques to basin analysis of Palaeoproterozoic rocks has potential to provide new insights into Proterozoic orogenic processes worldwide.

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Cumberland batholith, Trans-Hudson Orogen, Canada: Petrogenesis and implications for Paleoproterozoic crustal and orogenic processes

Cited by 67 publications

References 55 publications

An Early Permian (ca. 280Ma) silicic igneous province in the Alxa Block, NW China: A magmatic flare-up triggered by a mantle-plume?

An Early Permian (ca. 280Ma) silicic igneous province in the Alxa Block, NW China: A magmatic flare-up triggered by a mantle-plume?

Paleoproterozoic S-type granites in the Helanshan Complex, Khondalite Belt, North China Craton: Implications for rapid sediment recycling during slab break-off

Basin evolution and destruction in an Early Proterozoic continental margin: the Rinkian fold–thrust belt of central West Greenland

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