Geochemistry of meta‐sediments from Neoproterozoic Shimla and Chail Groups of Outer Lesser Himalaya: Implications for provenance, tectonic setting, and paleo‐weathering conditions

Joshi, Kumar Batuk; Ray, Soumya; Ahmad, Talat; Satyanarayanan, M.; Aradhi, Keshav Krishna

doi:10.1002/gj.4183

Cited by 15 publications

(3 citation statements)

References 180 publications

(358 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…To recognize the tectonic settings of Himalayan strata, modal values were used [38,39]. The most important component in identifying provenance is understanding the tectonic settings [40,41]. Furthermore, the tectonic settings of sedimentary environments influence variables affecting sandstone composition, and some of these variables remain unchanged even after a long period of severe-tropical weathering.…”

Section: Introduction and Geological Settingmentioning

confidence: 99%

Petrography and Provenance of the Sub-Himalayan Kuldana Formation: Implications for Tectonic Setting and Palaeoclimatic Conditions

et al. 2022

View full text Add to dashboard Cite

In this paper, the depositional environment, age, and tectonic context of the Sub-Himalayan Kuldana Formation are discussed in detail. To determine the Kuldana Formation’s depositional environment, age, and tectonic setting, sedimentological, palaeontological, and petrographic investigations have been conducted accordingly. The Kuldana Formation lithologically consists of both siliciclastic and carbonate rocks. Petrographically, the Kuldana Formation’s sandstone is divided into litharenite and feldspathic litharenite petrofacies. The sandstone plots on the QtFL and QmFLt suggest that the sandstone of the Kuldana Formation derived from a recycled orogen provenance field that developed during the collision of the Indian and Eurasian plates in the Lesser and Higher Himalayas. The plots in the diamond diagram further demonstrate that the detritus of the Kuldana Formation was derived from low and middle-to-upper rank metamorphic rocks of the Himalayas. Throughout the deposition of sandstone, paleo-climate conditions were semi-humid to semiarid. Dolostone and limestone are the two main types of carbonate rocks found in the Kuldana Formation. According to Dunham’s Classification, the Kuldana Formation limestone is classified as mudstone, wackstone, and packstone. These petrofacies suggest that the limestone was deposited in an inner-outer ramp setting. The bioclasts include bivalves, brachiopods, crinoid, gastropods, Globigerinoides spp, Lockhartia pustulosa, miliolids, Nummulites atacicus, Nummulites discorbina, Nummulites mamillatus, Nummulites djodjokartae, Nummulites vascus, and ostracods suggesting that the age of Kuldana Formation is Middle Eocene- early Oligocene. The Kuldana Formation was deposited during the initial stages of the Himalayan Orogeny as a result of the Ceno-Tethys Ocean’s regression and transgression, as revealed by a succession of siliciclastic and non-clastic rocks.

show abstract

Section: Introduction and Geological Settingmentioning

confidence: 99%

Petrography and Provenance of the Sub-Himalayan Kuldana Formation: Implications for Tectonic Setting and Palaeoclimatic Conditions

et al. 2022

View full text Add to dashboard Cite

show abstract

“…Through geo‐thermochronological, petrological, and geochemical investigations, the HHCS zone of the entire Himalayan region has received significant attention in understanding the geodynamic and tectonic evolution of the HHCS and MCT thrust zones (Dhiman & Singh, 2020; Ghosh & Mukherjee, 2021; Mukherjee et al, 2019; Singh & Jain, 2003; Singh et al, 2017, 2020; and references therein). A recent study by Joshi et al (2021) provides constraints on the provenance and palaeo‐weathering conditions of meta‐sediments of the Chail‐Shimla groups of the outer LHS zone. Similarly, the geochronological studies published by Singh et al (2002, 2020) and Webb et al (2011) constrain the Neoproterozoic magmatism of the various granite bodies of the Jutogh Thrust (JT) sheet.…”

Section: Introductionmentioning

confidence: 99%

“…A recent study by Joshi et al (2021) provides constraints on the provenance and palaeo-weathering conditions of meta-sediments of the Chail-Shimla groups of the outer LHS zone. Similarly, the geochronological studies published by Singh et al (2002Singh et al ( , 2020 and Webb et al (2011) constrain the Neoproterozoic magmatism of the various granite bodies of the Jutogh Thrust (JT) sheet.…”

Section: Introductionmentioning

confidence: 99%

Geochemistry and U–Pb zircon geochronology of the Jutogh Thrust sheet, Himachal Pradesh, NW‐Himalaya: Implications to the petrogenesis and regional tectonic setting

et al. 2022

View full text Add to dashboard Cite

We present datasets of the whole-rock geochemistry and U-Pb zircon geochronology from the Jutogh Thrust (JT) sheet of eastern Himachal Pradesh, NW Himalaya, in order to explain the tectono-magmatic environment in which they formed. The metapelite and granitoids of the JT sheet have moderate to high SiO 2 , Al 2 O 3 , Na 2 O, K 2 O, and rare earth elements (REE). The A/CNK (Al 2 O 3 /CaO + Na 2 O + K 2 O) ratio with magnitudes ≥1, indicates the peraluminous nature, calc-alkaline series, and S-type granitoids. The high values of Rb and Th as compared to Nb and the negative Ba anomaly also suggest the dominance of crustal source material. The distinct enrichment of large-ion lithophile elements of Rb, Th, K, Ba and Pb and strong depletion in highfield-strength elements (HFSE) of Zr, Nb and Ti results in high incompatible elements/HFSE ratios, which suggest that the source is derived from many intra-crustal tectonic environments. All samples are well-fractionated REE patterns [(La/Yb) N = 6.06-17.37] and characterized by moderately flat enriched [(La/Sm) N = 2.31-4.71] of light rare earth elements. The negative Eu anomalies (Eu/Eu* = 0.18-0.71), suggest the plagioclase fractionation from the sourced magma and the origin of granitic gneiss through the high temperature (800 C). The zircon U-Pb ages of granite range between 883.0 ± 15.0 Ma and 1260.0 ± 10.0 Ma, with a consistent peak of 925.0 Ma. It confirms that the northern edge of the Indian Plate collided with an unnamed microcontinent. Also, in a contemporaneous process, the upper crust underwent partial melting, and the generated magma intruded in an extensional tectonic set-up of the northern edge (i.e., presently known as the Jutogh and Vaikrita thrust sheets) of the Indian Plate during the Neoproterozoic. The available zircon U-Pb ages of the JT sheet range between 550-2750 Ma. The magmatic nature of zircons, with two peaks of 825 Ma and 910 Ma, suggests that episodic magmatic processes have taken place during the Neoproterozoic. This study revealed that the Higher Himalayan Crystalline Sequence was a meta-sedimentary sequence and was deposited in an active margin set-up of the northern edge of the Indian Plate.

show abstract

Geochemical Indicators in Provenance Estimation

Banerji

Dubey

Goswami

et al. 2022

Geochemical Treasures and Petrogenetic Processes

View full text Add to dashboard Cite

Geochemistry of meta‐sediments from Neoproterozoic Shimla and Chail Groups of Outer Lesser Himalaya: Implications for provenance, tectonic setting, and paleo‐weathering conditions

Cited by 15 publications

References 180 publications

Petrography and Provenance of the Sub-Himalayan Kuldana Formation: Implications for Tectonic Setting and Palaeoclimatic Conditions

Petrography and Provenance of the Sub-Himalayan Kuldana Formation: Implications for Tectonic Setting and Palaeoclimatic Conditions

Geochemistry and U–Pb zircon geochronology of the Jutogh Thrust sheet, Himachal Pradesh, NW‐Himalaya: Implications to the petrogenesis and regional tectonic setting

Geochemical Indicators in Provenance Estimation

Contact Info

Product

Resources

About