Evolving provenance in the Proterozoic Pranhita-Godavari Basin, India

Amarasinghe, Udeni; Chaudhuri, Arijit; Collins, Alan S.; Deb, Gautam Kumar; Patranabis‐Deb, Sarbani

doi:10.1016/j.gsf.2014.03.009

Cited by 38 publications

(20 citation statements)

References 37 publications

(38 reference statements)

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“…The sources of the ages/correlations used in compiling this are listed in the figure title. The available geochronology is at best capable of providing the broad age ranges in which the deposition occurred, often using indirect data eg: ages of intrusives in them or their basement (Pradhan et al, 2012;Kumar et al, 2015) or detrital zircon ages (Malone et al, 2008;Bickford et al, 2011;Amarsinghe et al, 2014;McKenzie et al, 2014;Basu and Bickford, 2015;Joy et al, 2015) to constraint the upper and lower ages of the component Groups from the various basins. Direct dating of the sediments and associated rocks (eg: Zachariah et al, 1999;Conrad et al, 2011;Gopalan et al, 2013;Tripathi and Singh, 2015) is sparse.…”

Section: Age Datamentioning

confidence: 99%

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Proterozoic Basins of Peninsular India: Status within the Global Proterozoic Systems

Kale

2016

Proceedings of the Indian National Science Academy

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This compilation is intended to present a snap-shot of the current status of the knowledge on the Proterozoic sediments and tectonic events that are preserved in Peninsular India; on the backdrop of the growing understanding of global events and environmental evolution during that period. Proterozoic sediments in Peninsular India are found in two contrasting categories of basins. Narrow linear intercratonic belts host terrigenous and marine sediments, often interbedded with volcanics and volcaniclastics; that are deformed, metamorphosed and occasionally intruded by granitic bodies. These belts abut with a tectonic contact with wide, unmetamorphosed platform sediments from epicratonic basins with limited igneous activity associated within them; clubbed as the Purana Basins of Peninsular India. Although traditionally the former (mobile belts) were considered to be older and different from the latter, emerging geochronological data demonstrates that they were coeval products of basins evolving adjoining each other in diverse tectonic setting. Available knowledge on these basins is summarised within the framework of the emerging understanding of the Proterozoic geohistory punctuated by assembly and break-up of supercontinents, progressive oxygenation of the atmosphere, changes in the sea-water chemistry; establishment of the continental free-board and the generic environments that laid the foundation of biotic evolution. Although significant advances have been made in the last decade in the knowledge of these sediments, much more is required to achieve the desired precision and resolution.

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Section: Age Datamentioning

confidence: 99%

“…collisional) tectonics occurring along their margins (eg: Collins et al, 2014). This aspect has implications on the global reconstructions of Proterozoic supercontinental assemblies.…”

Section: Basinal Historiesmentioning

confidence: 99%

Proterozoic Basins of Peninsular India: Status within the Global Proterozoic Systems

Kale

2016

Proceedings of the Indian National Science Academy

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“…The PG Basin sediments have been assigned to the Godavari Supergroup and the stratigraphy is characterized by unconformity bound sedimentary sequences (Chaudhuri, 2003, with further refinements in Amarasinghe et al, 2014;Saha and Patranabis-Deb, 2014;Chaudhuri et al, 2015). There are three unconformity bound sequences identified in each part of the PG Basin ( Fig.…”

Section: Pranhita-godavari Basinmentioning

confidence: 99%

“…(Amarasinghe et al, 2014). Two samples from Somanpalli Group is shown to produce age peaks at 3800 Ma, 3500 Ma, 2750Ma, 2480Ma and 1620Ma (Amarasinghe et al, 2014.…”

Section: Pranhita-godavari Basinmentioning

confidence: 99%

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SHRIMP U–Pb zircon provenance of the Sullavai Group of Pranhita–Godavari Basin and Bairenkonda Quartzite of Cuddapah Basin, with implications for the Southern Indian Proterozoic tectonic architecture

Joy

Jelsma

Tappe

et al. 2015

Journal of Asian Earth Sciences

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Phanerozoic surface history of southern Peninsular India from apatite (U‐Th‐Sm)/He data

Mandal

Fellin

Burg

et al. 2015

Geochem Geophys Geosyst

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Quantifying bedrock cooling history is crucial for understanding the long‐term landform evolution across passive margins and its control onto the sediment routing system. To constrain the low‐temperature cooling history and its relationships to the Phanerozoic tectonic events of southern Peninsular India, we present new apatite (U‐Th‐Sm)/He (AHe) analyses of 39 Precambrian basement samples. The new AHe ages range from 38.1 ± 6.8 to 364.2 ± 44.6 Ma: they are younger than 50 Ma in the Palghat Gap region and older than 200 Ma in the interior of the Deccan Plateau. Thermal modeling based on AHe data indicates enhanced cooling and exhumation in the interior of the Deccan Plateau by Permian‐Triassic times followed by gradual cooling up to the Present. This discrete episode of Permian‐Triassic cooling is associated with continental extension that preceded the Early Jurassic breakup of Gondwana. Bedrock cooling and exhumation on the southeastern and southern limits of the Deccan Plateau was likely accomplished by Late Cretaceous drainage reorganization. The distribution of old (>200 Ma) AHe ages over the >2600 m high Nilgiri Plateau reflects very low erosion/exhumation rates and adds to examples of long‐lived postorogenic topography. The relatively younger AHe ages from the ∼30 km wide low mountain pass (Palghat Gap) within the Western Ghat Mountains attest for intense Cenozoic erosion likely facilitated by the erodible lithological backbone of the Neoproterozoic shear zone. AHe ages across the western coastal plain challenge the widely hold notion of ∼3 km of post‐breakup isostatic rebound in response to erosion of the margin. Instead, the new AHe data are more compatible with less than 1–1.5 km of crustal denudation along the coastal strip.

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Evolving provenance in the Proterozoic Pranhita-Godavari Basin, India

Cited by 38 publications

References 37 publications

Proterozoic Basins of Peninsular India: Status within the Global Proterozoic Systems

Proterozoic Basins of Peninsular India: Status within the Global Proterozoic Systems

SHRIMP U–Pb zircon provenance of the Sullavai Group of Pranhita–Godavari Basin and Bairenkonda Quartzite of Cuddapah Basin, with implications for the Southern Indian Proterozoic tectonic architecture

Phanerozoic surface history of southern Peninsular India from apatite (U‐Th‐Sm)/He data

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