Role of hydrothermal activity in uranium mineralisation in Palnad Sub-basin, Cuddapah Basin, India

Thomas, P.K.; Thomas, Tresa; Thomas, J. B.; Pandian, M. S.; Banerjee, Rahul; Babu, P. V. Ramesh; Gupta, Shekhar; Vimal, Rajiv

doi:10.1016/j.jseaes.2014.02.013

Cited by 14 publications

(5 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Unconformity related uranium and thorium deposits are now recorded from the Kaladgi, Bhima, Cuddapah basins in particular by the Atomic Minerals Directorate of Exploration and Research (Singh et al, 1990;Dhana Raju et al, 2002;Kumar, et al, 2012b;Sridhar et al, 2014;Thomas et al, 2014). What appears to be a critical factor is the thermal rejuvenation of the basement by intrusion of either fertile granites or basic intrusives, followed by a phase of weathering that left behind a paleosol capable of hosting the enrichment of the radioactive minerals through epigenetic processes.…”

Section: Unconformitiesmentioning

confidence: 99%

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

Kale

2016

Proceedings of the Indian National Science Academy

View full text Add to dashboard Cite

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.

show abstract

Section: Unconformitiesmentioning

confidence: 99%

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

Kale

2016

Proceedings of the Indian National Science Academy

View full text Add to dashboard Cite

show abstract

“…These features are further supported by the presence of fractures, faults, felsic and matic intrusive signifying pre-and post-depositional reactivation in the area providing a hydrothermal gradient for remobilization Thomas et al, 2014). In addition, the presence of higher hydrouranium content (<10 ppb) away from the ore deposit suggests a possible role of groundwater in radioelement migration and fixation at suitable locales .…”

Section: Resultsmentioning

confidence: 77%

“…It is observed that the mineralisation follows a predominant N-S to NNE -SSW trend in this area which is sympathetic to post -depositional (Banganapalle sediments) younger faults and fractures. Besides, the basement granites in the vicinity show substantial reactivation as evidenced by the presence of basic dykes, profuse quartz veins and WNW-ESE trending fractures sub-parallel to the Kandlagunta fault (Ramesh Thomas et al, 2014).…”

Section: Geological Settingmentioning

confidence: 99%

Uranium series disequilibrium studies in Chenchu colony area, Guntur district, Andhra Pradesh, India

Shrivastava

Rao

Singh

et al. 2015

Applied Radiation and Isotopes

Self Cite

View full text Add to dashboard Cite

“…Previous studies have suggested that there was hidden tectonic activity in the basin during this period [51], which promoted the upwelling of some hydrothermal fluids. Hydrothermal fluids may have carried minerals into the lake basin, improved the nutrient content of the water body in the lake basin, and promoted the growth of organisms [52][53][54]. During the depositional period of black shale, the lake basin expanded continuously, and the water body deepened, resulting in obvious stratification of the lake water.…”

Section: Paleowater Depthmentioning

confidence: 99%

Characteristics and Paleoenvironment of High-Quality Shale in the Triassic Yanchang Formation, Southern Margin of the Ordos Basin

Sun

Feng

2023

Minerals

View full text Add to dashboard Cite

A set of high-quality lacustrine shales at the bottom of the Chang 7 member of the Yanchang Formation in the Ordos Basin is one of the main source rocks of tight oil and gas and shale oil in the Yanchang Formation. Based on outcrop, core, drilling and seismic data, by the quantitative characterization of outcrops, fine characterization of logging facies and seismic facies, and geochemical tests, the lithofacies types, geophysical response characteristics and organic geochemical characteristics of this high-quality shale are clarified, and the formation paleoenvironment, including redox conditions, paleoclimate, paleosalinity and paleowater depth, is analyzed. The high-quality shale at the bottom of the Chang 7 member is divided into three lithofacies types: black shale, dark massive mudstone and silty mudstone. The organic matter in black shale is mainly interbedded or stratified, the organic matter in dark massive mudstone is dispersed and the organic matter content in silty mudstone is lower. The shale shows high gamma (more than 260 API), a high acoustic time difference (more than 280 μs/m), a high resistivity (more than 330 Ω m) well-logging phase and strong-amplitude parallel–subparallel seismic phase characteristics. Based on the logging and seismic facies characteristics, the plane distribution range of this set of shales is defined. The sedimentary thickness gradually increases from the edge (5–10 m) to the center of the basin, among which the Jiyuan–Huachi–Yijun black shale has the largest thickness (more than 30 m). This set of high-quality shales was mainly formed under a warm and humid paleoclimate, in water depths of 60–120 m, and in an anaerobic reducing and continental freshwater paleoenvironment. The fine identification, distribution range and formation conditions of black shale lithofacies are of practical significance for predicting the distribution of favorable lithofacies of shale oil and gas and the deployment of horizontal wells.

show abstract

Role of hydrothermal activity in uranium mineralisation in Palnad Sub-basin, Cuddapah Basin, India

Cited by 14 publications

References 6 publications

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

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

Uranium series disequilibrium studies in Chenchu colony area, Guntur district, Andhra Pradesh, India

Characteristics and Paleoenvironment of High-Quality Shale in the Triassic Yanchang Formation, Southern Margin of the Ordos Basin

Contact Info

Product

Resources

About