Precambrian phosphorites in the Bijawar rocks of Hirapur-Bassia areas, sagar district, madhya pradesh, India

Banerjee, D. M.; Khan, M. W. Y.; Srivastava, Nilima; Saigal, Girish C.

doi:10.1007/bf00204465

Cited by 23 publications

(6 citation statements)

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“…The Bijawar Group of sediments consists of two subgroups; the lower Mali Subgroup (conglomerate, mafic flows and sills, sandstones and dolomites) and the upper Gangau subgroup containing phosphorites and sandstone. The total thickness is thought to be about 1000 m. The Gwalior Basin is about (Banerjee et al 1982). …”

Section: Bundelkhand Cratonmentioning

confidence: 99%

Chapter 3 The Archaean and Proterozoic history of Peninsular India: tectonic framework for Precambrian sedimentary basins in India

Meert

Pandit

2015

Memoirs

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Section: Bundelkhand Cratonmentioning

confidence: 99%

Chapter 3 The Archaean and Proterozoic history of Peninsular India: tectonic framework for Precambrian sedimentary basins in India

Meert

Pandit

2015

Memoirs

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“…Occurrence of phosphatic laminae and beds in the Rohtas and Kajrahat limestones of Vindhyan basin in the Son valley, Gangolihat Dolomite in the Kumaun Himalaya, Chelima area of the Cuddapah Supergroup and Charmuria Formation in the Chhattisgarh Supergroup (Banerjee, 1985) justify this contention. Also, Fe-rich aluminous phosphorites of putative Paleoproterozoic age occurring in the Bijawars of central India (Banerjee et al, 1982) is modeled in terms of extensive weathering related origin. Such shallow marine phosphorites and weathering profile related phosphorites are in stark contrast to upwelling related Phanerozoic phosphorites formed in the deeper part of shelf.…”

Section: Signature From Phosphatic Rocksmentioning

confidence: 99%

Early atmosphere and hydrosphere oxygenation: Clues from Precambrian paleosols and chemical sedimentary records of India

Chakraborty

Mukhopadhyay

Paul³

et al. 2020

Episodes

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Indian subcontinent offer scope for tracking early oxygenation history of atmosphere and hydrosphere. Available studies, though certainly not exhaustive, record signatures of pre-great oxygenation event (GOE) whiffs of atmospheric oxygenation between 3.29 and 3.02 Ga. Besides, available geochemical signatures from Precambrian sedimentary rocks (BIF, sulfides, sulfates, argillaceous sediments and phosphorites) suggest a generally sub-oxic shallow marine and bipartite oxicsulfidic condition in late Paleoproterozoic and Mesoproterozoic time, respectively. In this backdrop, occurrence of phosphorites in several late Paleoproterozoic basins possibly indicates formation of local oxygen oasis in presence of cyanobacterial community. From heavy to very heavy δ 34 S values in sulfides (pyrite) present in a number of Mesoproterozoic basins and Mo, Mo/TOC values from argillaceous intervals of the Vindhyan Supergroup, it is inferred that the deep hydrosphere was, in general, anoxic and, at times, euxinic.

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“…The Sonrai rift basin preserves volcano-sedimentary units of Late Archaean to early Proterozoic age [17]. The Precambrian phosphorites of Bijawar Group of rocks show characteristics of an epicontinental sea with restricted and very shallow marine environment of formation along some shoals which existed during the iron-rich Precambrian times [18]. The Bijawar basin in Lalitpur district is located at the extreme southwest corner of Uttar Pradesh (Fig.…”

Section: Geological Backgroundmentioning

confidence: 99%

Depositional Environment of Phosphorites of the Sonrai Basin, Lalitpur District, Uttar Pradesh, India

Dar¹,

Khan²

2016

Applied Studies of Coastal and Marine Environments

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Phosphates are regarded as one of the most important fertilizer minerals used by man. In Sonrai basin of Lalitpur the phosphorites are found to occur as lenticular and detached bodies throughout the Formation of the "ijawar Group. Individual bodies range from a few meters to about km in length, and width varies from thin bands to about meter with P O concentration ranging from to %. The Paleoproterozoic "ijawar Group are overlain by the "rchaean "undelkhand "asement Complex and underlain by Vindhyan Supergroup. The occurrence of phosphorites is confined to the Sonrai Formation which consists of massive to brecciated phosphorite within the lower reddish shales, with at least three bands identified. Megascopic study reveals that the brecciated phosphorite is reddish brown in color and fine to medium grained with angular fragments of chert and quartz embedded in a groundmass of iron oxides and secondary silica intercalated with minor veins of chert and iron oxides. The phosphorite horizon in the Lalitpur area is associated with pink to white brecciated massive quartzite, shale, dolomite and limestone of the basal unit. The concentration trends of certain major oxides indicate that the phosphorites are more enriched in CaO, P O and SiO than "l O , Fe O , TiO , Na O and K O. The concentration trends of trace elements reveal that the phosphorites are moderately enriched in Co, Zn, Zr, Pb, U than in Sc, "a, V, Cr, Ni, , Rb, Sr, Y and Th. The dispersion patter, correlation coefficient and mutual relationship of significant major oxides represented by plotted diagrams, indicate that SiO , CaO, MgO are antipathetically related with P O . The relationship suggests a gradual replacement among these oxides during diagenesis. High values of P O and CaO in the phosphorites indicate more concentration of apatite constituent. The difference in geochemical behavior of CaO and MgO may be due to ionic substitution of Ca + by MgO + in the apatite crystal lattice during alkaline environment of the basin. The strong negative relationship between P O with Fe O in phosphorites may be due to leaching and/mild weathering of iron from the ores and reprecipitation along with P O in the pore spaces, cavities/voids, veins, etc in highly oxidizing marine environment of the basin. The minimum evidence of organic matter, absence of sulphide minerals and lower concentration of V, Ni, and

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Precambrian phosphorites in the Bijawar rocks of Hirapur-Bassia areas, sagar district, madhya pradesh, India

Cited by 23 publications

References 1 publication

Chapter 3 The Archaean and Proterozoic history of Peninsular India: tectonic framework for Precambrian sedimentary basins in India

Chapter 3 The Archaean and Proterozoic history of Peninsular India: tectonic framework for Precambrian sedimentary basins in India

Early atmosphere and hydrosphere oxygenation: Clues from Precambrian paleosols and chemical sedimentary records of India

Depositional Environment of Phosphorites of the Sonrai Basin, Lalitpur District, Uttar Pradesh, India

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