Restoring the supercontinent Columbia and tracing its fragments after its breakup: A new configuration and a Super-Horde hypothesis

Yakubchuk, Alexander

doi:10.1016/j.jog.2010.03.001

Cited by 58 publications

(23 citation statements)

References 58 publications

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“…In this backdrop, study of present intrusive unit is felt necessary as it is hosted within Mesoproterozoic Singhora basin, the time frame through which supercontinent 'Columbia' witnessed its final fragmentation (Li et al 2008;Yakubchuk 2010). Besides addressing these global issues, such study is also necessary to understand evolution and correlation between laterally adjacent sedimentary basins on the eastern part of the Bastar craton of India, and to unravel the relationship of the basins, if any, with regional tectonic grains involving different crustal provinces, viz., the craton and adjacent orogenic hinterland, i.e., EGB.…”

Section: Discussionmentioning

confidence: 99%

1420 Ma diabasic intrusives from the Mesoproterozoic Singhora Group, Chhattisgarh Supergroup, India: Implications towards non-plume intrusive activity

Das

Chakraborty

et al. 2011

J Earth Syst Sci

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Besides offering significant clues towards tracking the geochemical evolution of the mantle and architectural reconstruction of different 'supercontinent', geochronological and geochemical appraisal of igneous inputs are also important to bracket the depositional time frame of any lithopackage, particularly, the unfossiliferous sedimentary successions. The present study deals with diabasic intrusive within Mesoproterozoic Saraipalli Formation, which is an argillaceous constituent present at the basal part of nearly 400 m thick four-tiered unmetamorphosed but deformed sedimentary succession of Singhora Group, Chhattisgarh Supergroup, central India. The SE-NW trending intrusive comprises mainly of plagioclase and augite together with minor orthopyroxene, biotite and opaque minerals. Though some plagioclase laths are partially sericitized, the ophitic-to-subophitic texture of the rock is well preserved. Major and trace element geochemical data indicate that this intrusive is basalt-to-basaltic andesite in character and of subalkaline basalt affinity. Multi-element plot shows overall LILE-enrichment and enrichment of Pb and slight depletion of Nb and P, coupled with moderate La/Nb and Th/Nb ratios. Zr, Y and Nb ternary diagrams plot in the fields of within plate basalt. Selected HFSE ratios indicate a non-plume source with crustal assimilation/sediment mixing. Sm-Nd and Rb-Sr isotope data show that the intrusive has Sr initial and Nd initial of 0.709377-0.706672 and 0.510919-0.510815, respectively. Positive ε t Nd [t = 1420 Ma] values (+0.3 to + 2.3) indicate depleted isotopic nature of their protolith. The calculated T DM age is 1.7-1.9 Ga. The mineral-whole rock isochron data (Sm-Nd systematics) of the intrusive implies an emplacement age of ca. 1420 Ma. Considering synchronous terrain boundary shear zone development in Bastar craton on the southeastern part of the Singhora basin, mafic magmatism in Eastern Ghats and large-scale basic intrusion in Sausar mobile belt, a major tectono-thermal event around 1400 Ma is surmised that affected eastern Indian craton. Moreover, geochronology of a bedded porcellanite unit (ca. 1500 Ma) at the base and a discordant basic intrusive (ca. 1420 Ma) allowed a unique opportunity to qualitatively offer an upper bound of time bracket for the deposition of Saraipalli Formation, i.e., ∼80 Ma.

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Section: Discussionmentioning

confidence: 99%

1420 Ma diabasic intrusives from the Mesoproterozoic Singhora Group, Chhattisgarh Supergroup, India: Implications towards non-plume intrusive activity

Das

Chakraborty

et al. 2011

J Earth Syst Sci

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“…However, different paleogeographic scenarios of Columbia were proposed, mainly due to scarcity of high-quality paleomagnetic poles (e.g. Meert 2002, Zhao et al 2002, 2003, 2004, Pesonen et al 2003, Hou et al 2008a, 2008b, Johansson 2009, Rogers & Santosh 2009, Wingate et al 2009, Yakubchuk 2010, Evans & Mitchell 2011, Zhang et al 2012, Pisarevsky et al 2014among others).…”

Section: Columbia Supercontinentmentioning

confidence: 99%

Paleomagnetism of the Amazonian Craton and its role in paleocontinents

et al. 2016

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In the last decade, the participation of the Amazonian Craton on Precambrian supercontinents has been clarified thanks to a wealth of new paleomagnetic data. Paleo to Mesoproterozoic paleomagnetic data favored that the Amazonian Craton joined the Columbia supercontinent at 1780 Ma ago, in a scenario that resembled the South AMerica and BAltica (SAMBA) configuration. Then, the mismatch of paleomagnetic poles within the Craton implied that either dextral transcurrent movements occurred between Guiana and Brazil-Central Shield after 1400 Ma or internal rotation movements of the Amazonia-West African block took place between 1780 and 1400 Ma. The presently available late-Mesoproterozoic paleomagnetic data are compatible with two different scenarios for the Amazonian Craton in the Rodinia supercontinent. The first one involves an oblique collision of the Amazonian Craton with Laurentia at 1200 Ma ago, starting at the present-day Texas location, followed by transcurrent movements, until the final collision of the Amazonian Craton with Baltica at ca. 1000 Ma. The second one requires drifting of the Amazonian Craton and Baltica away from the other components of Columbia after 1260 Ma, followed by clockwise rotation and collision of these blocks with Laurentia along Grenvillian Belt at 1000 Ma. Finally, although the time Amazonian Craton collided with the Central African block is yet very disputed, the few late Neoproterozoic/Cambrian paleomagnetic poles available for the Amazonian Craton, Laurentia and other West Gondwana blocks suggest that the Clymene Ocean separating these blocks has only closed at late Ediacaran to Cambrian times, after the Amazonian Craton rifted apart from Laurentia at ca. 570 Ma.

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“…Instead, a well-dated 1789 ± 7 Ma (SHRIMP U-Pb in zircon) paleomagnetic pole from the Amazonian Craton (the Colider intrusive suite) suggested a latitudinal gap between this craton and the Laurentia-Baltica block, which could have been occupied by another large landmass, such as the North China Craton (Bispo- . The position of North China between Baltica and Amazonia is supported by the models of Kusky et al (2007) and Yakubchuk (2010), which were based on the continuity of Archean and Paleoproterozoic provinces along those four different cratons.…”

Section: Introductionmentioning

confidence: 80%

The 1420Ma Indiavaí Mafic Intrusion (SW Amazonian Craton): Paleomagnetic results and implications for the Columbia supercontinent

et al. 2012

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Restoring the supercontinent Columbia and tracing its fragments after its breakup: A new configuration and a Super-Horde hypothesis

Cited by 58 publications

References 58 publications

1420 Ma diabasic intrusives from the Mesoproterozoic Singhora Group, Chhattisgarh Supergroup, India: Implications towards non-plume intrusive activity

1420 Ma diabasic intrusives from the Mesoproterozoic Singhora Group, Chhattisgarh Supergroup, India: Implications towards non-plume intrusive activity

Paleomagnetism of the Amazonian Craton and its role in paleocontinents

The 1420Ma Indiavaí Mafic Intrusion (SW Amazonian Craton): Paleomagnetic results and implications for the Columbia supercontinent

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