Archean to Proterozoic (3535–900 Ma) crustal evolution of the central Aravalli Banded Gneissic Complex, NW India: New constraints from zircon U-Pb-Hf isotopes and geochemistry

Kaur, Parampreet; Zeh, Armin; Chaudhri, Naveen

doi:10.1016/j.precamres.2021.106179

Cited by 20 publications

(14 citation statements)

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“…The sample preparation for the whole‐rock geochemical data of granitoids and metabasites was carried out at the Department of Geology, Panjab University, Chandigarh as per the details given in Kaur et al (2021). A complete set of whole‐rock major and trace element data (package: WRA4B2 + 4Litho) was obtained from Activation Laboratories Ltd., Ontario using lithium tetraborate fusion method (for details, see Kaur, Chaudhri, et al, 2019 and references therein).…”

Section: Methodsmentioning

confidence: 99%

“…The sample preparation for the whole-rock geochemical data of granitoids and metabasites was carried out at the Department of Geology, Panjab University, Chandigarh as per the details given in Kaur et al (2021).…”

Section: Methodsmentioning

confidence: 99%

“…The Precambrian rocks of the Aravalli orogen can be subdivided into three broad geological entities, namely (a) the Aravalli Banded Gneissic Complex, (b) the Aravalli‐Delhi Mobile Belt, and (c) the Marwar Block, roughly from east to west (Figure 1; Heron, 1953; Gupta et al, 1997; Sinha‐Roy, Malhotra, & Mohanty, 1998; Roy & Jakhar, 2002). The Aravalli Banded Gneissic Complex (ABGC) is an Archean (Palaeoarchean to Neoarchean: 3.54–2.50 Ga; Kaur, Zeh, & Chaudhri, 2019a; Kaur, Zeh, & Chaudhri, 2021 and references therein) cratonic nucleus, which occupies a large tract in the southern and central Rajasthan with some of its fragments cropping out in the northern part. It mainly comprises TTG gneisses and granitoids, which are separated from the Vindhyan Supergroup (Late Palaeoproterozoic–Early Neoproterozoic: 1.70–0.90 Ga; Colleps et al, 2021) in the east by the Great Boundary Fault.…”

Section: Geological Outlinementioning

confidence: 99%

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Association of A‐ and I‐type granitoids in the central Aravalli orogen, Rajasthan: Implications for the Neoproterozoic tectonic evolution of north‐west India

2022

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We present new mineralogical and geochemical data for the granitoid plutons of the Neoproterozoic Sendra Granitoid Suite, central Aravalli orogen, north‐west India to constrain their petrogenesis and tectonic setting. The granitoids can be classified into two groups: (a) A‐type Chang, Chitar, Borwar, and Seliberi plutons and (b) I‐type Jaitpura pluton. The available geochronological data (zircon U–Pb ages) suggest that all the granitoids are coeval at 990–970 Ma. The granitoids are mostly granite sensu stricto, with subordinate granodiorite and rare tonalite. The rocks are metaluminous to mildly peraluminous and have high total REE abundances. Nevertheless, there are also certain geochemical differences between A‐type and I‐type granitoids. The I‐type granitoids have relatively high Al2O3 and CaO concentrations and show significant fractionation with increasing SiO2. The least fractionated sample contains low abundances of the HFSE and has low Fe‐number and Ga/Al ratios. In contrast, the A‐type granitoids have lower CaO and higher HFSE concentrations, Fe‐number, and Ga/Al ratios. Both A‐type and I‐type granitoids show negative Ba, Sr, Nb, P, Ti, and Eu anomalies, and are characterized by high zircon‐saturation temperatures (801–977°C). The present data suggest that rocks of the Sendra Granitoid Suite were generated predominantly by partial melting of mafic sources at high temperatures and emplaced in a post‐collisional extensional regime. Moreover, our study provides evidence of the preserved post‐collisional extensional magmatism subsequent to the subduction during the assembly of the Rodinia supercontinent, which is otherwise relatively less prevalent over intra‐plate or within‐plate magmatism during this time period.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Geological Outlinementioning

confidence: 99%

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Association of A‐ and I‐type granitoids in the central Aravalli orogen, Rajasthan: Implications for the Neoproterozoic tectonic evolution of north‐west India

2022

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“…The BGC‐I of the southern Rajasthan is of 3.3–2.44 Ga age (Gopalan, Macdougall, Roy, & Murali, 1990; Kaur et al, 2019; Roy & Kröner, 1996; Wiedenbeck & Goswami, 1994; Wiedenbeck, Goswami, & Roy, 1996). In contrast to the BGC‐I, the BGC‐II terrane of the central Rajasthan is composed of diverse lithounits that were formed during the Archean Eon and largely reworked during the Proterozoic (I. Ahmad, Mondal, Bhutani, & Satyanarayanan, 2018; Bhowmik & Dasgupta, 2012; Dharma Rao et al, 2011; Kaur, Zeh, & Chaudhri, 2021; Roy & Jakhar, 2002). Fascinatingly, the gneisses of the Mangalwar Complex of the BGC‐II also exhibit Paleoarchean to Neoarchean lineage (I. Ahmad, Mondal, Bhutani, & Satyanarayanan, 2018; D'Souza et al, 2020; D'Souza, Prabhakar, Xu, Sharma, & Sheth, 2019; Dey et al, 2019; Dharma Rao et al, 2011; Roy, Kröner, Rathore, Laul, & Purohit, 2012).…”

Section: Regional Geological Settingmentioning

confidence: 99%

“…In contrast to the BGC-I, the BGC-II terrane of the central Rajasthan is composed of diverse lithounits that were formed during the Archean Eon and largely reworked during the Proterozoic (I. Ahmad, Mondal, Bhutani, & Satyanarayanan, 2018;Bhowmik & Dasgupta, 2012;Dharma Rao et al, 2011;Kaur, Zeh, & Chaudhri, 2021;Roy & Jakhar, 2002). Fascinatingly, the gneisses of the Mangalwar Complex of the BGC-II also exhibit Paleoarchean to Neoarchean lineage (I.…”

Section: Regional Geological Settingmentioning

confidence: 99%

Rift‐related multistage evolution of the Mangalwar Complex, Aravalli Craton (NW India): Evidence from elemental and Sr–Nd isotopic features of Proterozoic amphibolites

et al. 2022

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The Banded Gneissic Complex (BGC) of the Aravalli Craton (India) comprises Archean BGC‐I (3.3–2.5 Ga) and Proterozoic BGC‐II. The BGC‐II is a mosaic of amphibolite facies namely, (a) Mangalwar Gneissic Complex (MGC), (b) Mangalwar Metasedimentary Complex (MMC), and (c) granulite‐facies Sandmata Metamorphic Complex. Here we present field, petrography and geochemical study of the Proterozoic amphibolites from the MGC and MMC. Based on field and geochemical data, the amphibolites have been characterized into three types related to rift settings (G1, G2 and G3). The G1 type occurs as dykes in the MGC and bears ocean island basalt‐type rare earth element (REE) patterns along with negative Nb and Ti anomalies, negative to positive values of εNd(t) (−0.02 to +3.96) and slightly variable initial 87Sr/86Sr (ISr) ratios. They are derived from deep mantle sources and correspond to the pre‐rift magmatic phase. The G2 type occurs as isolated patches associated with chert and is characterized by light REE (LREE) depleted and almost flat heavy REE (HREE) patterns suggesting that they were emplaced in an oceanic setting and were derived from a shallower mantle bearing positive εNd(t) (+2.87 to +6.27) and ISr = 0.7002–0.7083. This phase corresponds to the opening of the Mangalwar sedimentary basin (MMC). The G3 type occurs intercalated with metasedimentary rocks of the MMC and marked by LREE‐enriched and HREE‐depleted to flat patterns that resemble Upper Continental Crust signature, their εNd(t) mostly negative values and variable ISr also corroborate this explanation. They are believed to be derived from heterogeneous sources and represent syn‐sedimentary volcanic phases. All these signatures indicate that the amphibolites distinctly represent three phases of magmatism that occurred during pre‐rift (1.72 Ga), opening of basin (1.62 Ga) and syn‐sedimentary volcanism (1.6–1.3 Ga) in the rift‐basin and they were formed during the Proterozoic. These rifting events might have been connected with the fragmentation of Columbia.

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Provenance and sedimentation age of the Proterozoic clastic succession of the Garhwal‐Kumaon Lesser Himalaya, NW‐India: Clues from U–Pb zircon and Sr–Nd isotopes

et al. 2022

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The paper presents data on the U-Pb chronology of detrital zircon grains and radiogenic isotopic composition ( 87 Sr/ 86 Sr, ϵNd) from the Proterozoic clastic successions of the Garhwal-Kumaon Lesser Himalaya representing the extended northern Indian cratonic margin, NW India. The Proterozoic Lesser Himalayan Basin in Garhwal-Kumaon Himalaya is divided into two sectors, namely, Inner Lesser Himalaya (ILH) and Outer Lesser Himalaya (OLH) by a tectonic boundary, namely the Tons Thrust (TT). Age distribution from inner and outer sectors of the Lesser Himalaya shows that the U-Pb chronology of most of these zircons provides Palaeoproterozoic (between 1.6 and 1.8 Ga) to Neoproterozoic (800 Ma) ages. The age data suggest sedimentation of the Rautgara Formation (Damtha Group) of ILH continued till the Neoproterozoic ($850 Ma), which was earlier regarded as ≤1.6 Ga. Tracking the detrital U-Pb zircon ages in the near adjacent cratonic parts point towards Aravalli Orogen as the major source region. Wholerock Ɛ Nd(0) values for ILH rocks range from À37.6 to À14.6 and for OLH it ranges from À19.6 to À6.7. More negative Ɛ Nd values along with dominance of Neoarchean-Palaeoproterozoic ages in ILH indicates supply from more evolved protolith or recycled sources and less negative Ɛ Nd values with major Neoproterozic zircon ages from OLH supports for less evolved source rock. The change from more negative Ɛ Nd to less negative Ɛ Nd values progressively upward the stratigraphy can be due to a shift in source with time. Both U-Pb zircon and Ɛ Nd supports for a continuous sedimentation model, rule out the presence of $500 Ma unconformity within the LH and argues for separate evolution of the Lesser Himalayan Basin on the trailing edge of the extended north Indian craton in "Columbia" configuration.

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Archean to Proterozoic (3535–900 Ma) crustal evolution of the central Aravalli Banded Gneissic Complex, NW India: New constraints from zircon U-Pb-Hf isotopes and geochemistry

Cited by 20 publications

References 103 publications

Association of A‐ and I‐type granitoids in the central Aravalli orogen, Rajasthan: Implications for the Neoproterozoic tectonic evolution of north‐west India

Association of A‐ and I‐type granitoids in the central Aravalli orogen, Rajasthan: Implications for the Neoproterozoic tectonic evolution of north‐west India

Rift‐related multistage evolution of the Mangalwar Complex, Aravalli Craton (NW India): Evidence from elemental and Sr–Nd isotopic features of Proterozoic amphibolites

Provenance and sedimentation age of the Proterozoic clastic succession of the Garhwal‐Kumaon Lesser Himalaya, NW‐India: Clues from U–Pb zircon and Sr–Nd isotopes

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