First Evidence of Late Paleoproterozoic/Early Mesoproterozoic Sediment Deposition and Magmatism in the Central Aravalli Orogen (NW India)

Kaur, Parampreet; Zeh, Armin; Chaudhri, Naveen; Tiwana, Jaideep K.

doi:10.1086/707235

Cited by 22 publications

(6 citation statements)

References 68 publications

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“…Besides, Mid to Late Palaeoproterozoic (2250–1600 Ma) ages are mostly reported from the metasediments and metavolcanics of the Delhi Supergroup (Ahmad et al, 2020; Kaur et al, 2011; Mckenzie et al, 2013). In addition, magmatic events of ~1850 Ma (Deb et al, 2002; Kaur et al, 2009, 2017; Mukhopadhyaya et al, 2000), ~1720 Ma (Kaur et al, 2011, 2017, 2021; Pandit et al, 2021) and ~1600 Ma (Kaur et al, 2020) are well documented from Rajasthan region. Tectono‐thermal reworking and granulite exhumation in the BGC‐II have an age ranging from 1729 to 1625 Ma (Buick et al, 2006; Dharma Rao et al, 2011; Fareeduddin, 1998).…”

Section: Discussionmentioning

confidence: 98%

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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Section: Discussionmentioning

confidence: 98%

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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“…Furthermore, the Neoproterozoic age span (990–970 Ma) for the Sendra felsic rocks is significant for the global reconstruction of continental blocks, such as Laurentia, Australia, Antarctica, Amazonia, Baltica, West Africa, India, and South China during the amalgamation of the Rodinia supercontinent between 1,300 and 900 Ma (e.g., Bogdanova, Pisarevsky, & Li, 2009; Li et al, 2008). Although the position and inclusion of India in Rodinia is still contentious (e.g., Merdith et al, 2017) because of lack of robust palaeomagnetic data, piercing points, and barcodes, many studies in recent years based on petrological and geochronological data have suggested that NW India was an integral part of Rodinia (e.g., Bhowmik et al, 2018; Bose, Seth, & Dasgupta, 2017; Kaur et al, 2020; Tiwana et al, 2020; J. H. Zhao et al, 2018). In addition, our new data on the Sendra granitoids provide a record of preserved subduction‐related post‐collisional extensional magmatism, which is relatively less dominant over intra‐plate or within‐plate magmatism in the surviving fragments of the Rodinia supercontinent (Liu et al, 2019).…”

Section: Discussionmentioning

confidence: 99%

“…The ADMB constitutes an older Aravalli Supergroup (Early to Late Palaeoproterozoic: <2.45–1.75 Ga; Deb & Thorpe, 2004; Ahmad, Dragusanu, & Tanaka, 2008; Kaur, Zeh, Chaudhri, Gerdes, & Okrusch, 2013; Kaur, Zeh, & Chaudhri, 2019b; Wang, Cawood, Pandit, Zhou, & Zhao, 2019) and the younger Delhi Supergroup. Based on the depositional ages, the latter can be categorized into two domains; the older northern domain (Delhi to Beawar: the North Delhi Supergroup) constitutes the rocks deposited between <1.7 and 1.6 Ga (D'Souza, Prabhakar, Xu, Sharma, & Sheth, 2019; Kaur, Zeh, Chaudhri, Gerdes, & Okrusch, 2011; Kaur, Zeh, Chaudhri, & Tiwana, 2020), while the younger southern domain (Beawar to Ambaji: the South Delhi Supergroup) comprises the rocks with depositional ages between 1.2 and 1.0 Ga (McKenzie et al, 2013; Y. K. Singh et al, 2010; Wang, Cawood, Pandit, Zhou, & Chen, 2017). The South Delhi Supergroup is further separated from the rocks of Marwar Block, lying to its western side, by the Western Marginal Fault or the Phulad Shear Zone (Figure 1).…”

Section: Geological Outlinementioning

confidence: 99%

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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“…The basement of the Aravalli Craton is lithologically heterogeneous and designated as the BGC (B. C. Gupta, 1934; Heron, 1953). The BGC is a collage of different lithounits including tonalite‐trondhjemite‐granodiorite gneisses, migmatitic gneisses, undeformed intrusive granitoids, amphibolites/metabasaltic rocks and metasedimentary sequences, that served as the basement for the overlying Aravalli and Delhi Supergroups (Deb & Thorpe, 2004; Kaur et al, 2011; Kaur, Chaudhri, Raczek, Kroner, & Hofmann, 2007; Kaur, Chaudhri, Raczek, Kröner, & Hofmann, 2009; Kaur, Zeh, Chaudhri, & Tiwana, 2020; N. R. McKenzie et al, 2013). Based on the metamorphic grade, deformational history and geochronology, the BGC has been further classified into two distinct lithotectonic domains namely, the BGC‐I and BGC‐II (B. C. Gupta, 1934; S. N. Gupta et al, 1997; Figure 1b).…”

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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First Evidence of Late Paleoproterozoic/Early Mesoproterozoic Sediment Deposition and Magmatism in the Central Aravalli Orogen (NW India)

Cited by 22 publications

References 68 publications

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

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

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

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