Carbonate xenoliths hosted by the Mesoproterozoic Siddanpalli Kimberlite Cluster (Eastern Dharwar craton): implications for the geodynamic evolution of southern India and its diamond and uranium metallogenesis

Rao, N. V. Chalapathi; Anand, M.; Dongre, Ashish; Osborne, I.

doi:10.1007/s00531-009-0484-7

Cited by 35 publications

(2 citation statements)

References 49 publications

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“…Significantly, this time span (ca. 1,200–1,050 Ma) at the end of the Mesoproterozoic also witnessed the emplacement of several lampoite and kimberlite pipes in the Dharwar, Bundelkhand, and Bastar cratons (emplacement ages summarized in Chalapathi Rao, Burgess, Anand, & Mainkar, 2007; Chalapathi Rao et al, 2010, b, c; Haggerty & Birkett, 2004) which supports the notion of a widespread deep‐seated thermal perturbation across the Indian Shield (Pandey & Chalapathi Rao, 2020). The Kolhan Group and the Sausar Group are likely to represent homotaxial stratigraphic units that record the history of an interrupted extension along the CITZ in between the Columbia and Rodinia supercontinent cycles.…”

Section: Discussionmentioning

confidence: 98%

Detrital zircon U–Pb LA‐ICPMS ages from the Kolhan Group, Singhbhum Craton, eastern India: Implications for terminal Mesoproterozoic palaeogeography between Columbia and Rodinia along the Central Indian Tectonic Zone

et al. 2020

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The Kolhan Group in the Singhbhum Craton of eastern India is a passive margin siliciclastic shelf to deep‐water carbonate ramp platform succession. It occupies a unique position in respect of the Central Indian Tectonic Zone (CITZ), widely considered as the suture joining the northern and southern Indian cratonic blocks at the time of amalgamation of the Mesoproterozoic supercontinent Columbia. The Kolhan succession is closely comparable to other Late Proterozoic ‘Purana’ successions of India including the siliciclastic‐carbonate Suasar Group from the central part of the CITZ. We report here the first U–Pb detrital zircon ages from the Kolhan Group. The youngest age population obtained from basal siliciclastics suggests it is not older than ca. 1,158 Ma. The absence of any concordant detrital zircon <1,000 Ma which is well represented in the adjoining Singhbhum Shear Zone and CITZ extensions, suggests that the sedimentation took place prior to ca. 1,000 Ma. The Kolhan Group, therefore, records an extensional event between two major episodes of supercontinent assembly (i.e., Columbia and Rodinia). A similar motif of extension and passive margin sedimentation across Mesoproterozoic Peninsular India together with the widespread Mesoproterozoic lamproite and kimberlite emplacement event suggests an episode of extension and major basin development across the Indian Shield in between the two supercontinent amalgamation cycles of Columbia and Rodinia.

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Section: Discussionmentioning

confidence: 98%

Detrital zircon U–Pb LA‐ICPMS ages from the Kolhan Group, Singhbhum Craton, eastern India: Implications for terminal Mesoproterozoic palaeogeography between Columbia and Rodinia along the Central Indian Tectonic Zone

et al. 2020

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“…The Wadagera kimberlite intrudes rocks of the Peninsular Gneiss Complex on an exposed shield area of the East Dharwar Craton. 55 km to the north-west of the kimberlite, the craton is covered by the basalts of the Deccan Trap (65 Ma) and Bhima Group sedimentary sequence, which has been reclassified as Mesoproterozic and correlated with the Kurnool Group (Chalapathi Rao et al 2009). The intrusion age has been dated at 1 083.8 +/-5.3 Ma by a combination of Rb-Sr and 40 Ar/ 39 Ar on phlogopite and U-Pb on in situ perovskite (Patton 2007 andPatton et al 2007) which broadly corresponds to the age of kimberlites in the Narayanpet cluster (Patton et al 2007, Chalapathi Rao et al 1999, Kumar et al 2007.…”

Section: Introductionmentioning

confidence: 99%

The geology and geochemistry of the Wadagera kimberlite and the characteristics of the underlying subcontinental lithospheric mantle, Dharwar craton, India

International Kimberlite Conference Extended Abstracts: 2012

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The Wadagera Group 1 kimberlite is situated close to the northern bank of the Krishna River in northern Karnataka, India. It is the largest pipe in a cluster discovered by De Beers during an exploration programme in the area in 2002. The pipe has been dated at 1 083.8 +/-5.3 Ma which broadly corresponds to published ages of kimberlites in the adjacent Narayanpet cluster. The pipe was discovered during follow-up of an airborne multispectral scanner survey. Ground magnetic survey and drilling data indicate that the pipe has an area of approximately 6 ha. The kimberlite intrudes exposed Peninsular Gneiss Complex of the Indian Shield and limited petrographic analysis suggests that only magmatic kimberlite has been preserved. The kimberlite surface sample shows extreme calcretisation and does not yield any mantle garnets. Garnet xenocrysts are recovered in drill samples from about 20 m depth. This paper analyses the mantle derived xenocrysts from the Wadagera kimberlite to propose a Subcontinental Lithospheric Mantle (SCLM) architecture sampled by the kimberlite. The major element garnet mineral chemistry represents a Ti lherzolite population. This and other major element systematics of the xenocryst population indicates melt metasomatism of the SCLM sampled. Harzburgitic garnets are almost absent.There is also a very strong chromiteclinopyroxene-garnet-equilibrium (CCGE) trend, which together with the spinel data suggests that the kimberlite has sampled fertile mantle at relatively shallow depth. The major element geochemical data supports the absence of diamond reported in this kimberlite.

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Dharwar Craton

Pandey¹

2020

Society of Earth Scientists Series

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Carbonate xenoliths hosted by the Mesoproterozoic Siddanpalli Kimberlite Cluster (Eastern Dharwar craton): implications for the geodynamic evolution of southern India and its diamond and uranium metallogenesis

Cited by 35 publications

References 49 publications

Detrital zircon U–Pb LA‐ICPMS ages from the Kolhan Group, Singhbhum Craton, eastern India: Implications for terminal Mesoproterozoic palaeogeography between Columbia and Rodinia along the Central Indian Tectonic Zone

Detrital zircon U–Pb LA‐ICPMS ages from the Kolhan Group, Singhbhum Craton, eastern India: Implications for terminal Mesoproterozoic palaeogeography between Columbia and Rodinia along the Central Indian Tectonic Zone

The geology and geochemistry of the Wadagera kimberlite and the characteristics of the underlying subcontinental lithospheric mantle, Dharwar craton, India

Dharwar Craton

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