Geochemistry of heavy minerals from Uttara Kannada beach sediments, West Coast of India: an insight into provenance studies

Paltekar, Manjunath; Hegde, V. S.; Hulaji, Shivani; Pratihari, Asim Ranjan; Korkoppa, M. M.

doi:10.1007/s43217-021-00078-z

Cited by 7 publications

(2 citation statements)

References 28 publications

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“…These problems can be addressed by studying the quantum and sources of sediments arriving at the estuarine system. Different approaches include studying hydrographic conditions across the estuaries (Hegde et al, 2004), sediment sink and movement in the estuarine beaches (Hegde et al, 2007(Hegde et al, , 2009Nayak et al, 2010;Karapurkar et al, 2022), provenance and sediment transport pathways are determined through heavy mineral constituent studies (Shalini et al, 2019;Paltekar et al, 2021). Lalomov (2003), Frihy (2007), and Shalini et al (2019) based on the mineralogical and geochemical studies of heavy minerals from the estuarine beach sands identified alongshore currents as well as offshore sources for sediments on the modern shores.…”

Section: Introductionmentioning

confidence: 99%

Sediment yield from a tropical mountainous watershed by RUSLE model, An insight for sediment influx into the tropical estuary

Karapurkar,

Hegde

2023

Journal of Geomatics

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Sediment yield is the possible volume of sediments that a basin is capable of delivering to its watershed outlet. It is a function of the topography of the drainage basin, climate, including precipitation, land use- land cover, soil characteristics, and other factors associated with the rate of soil formation and its transportation. Modeling sediment yield from a watershed enables computing quantitative estimates of sediments generated from a watershed. The Revised Universal Soil Loss Equation (RUSLE) is an efficient model for the assessment of annual soil loss from a basin using remotely sensed data in the Geographical Information System (GIS) platform. In the present study, the assessment of sediment yield from the Gangolli river basin of Karnataka, located on the central west coast of India, is carried out based on satellite data, processed in the GIS platform following the RUSLE model. The basin has a relief of 1200 m and a total catchment area of 1513.04km2, spread on the western face of the Western Ghat region of the South Kanara district. The basin is located in a tropical environment and experiences a hot humid climate and annual precipitation of ~ 355 cm. Physiographically, the basin is divided into three subdivisions; the high-relief mountainous region of the Western Ghats, the residual hilly region with low relief, and the coastal plains. The basin has a high circularity Index (0.25) and a moderately high elongation ratio (0.51). The total actual sediment yield from the basin has been estimated to be 6,32,976.38 tons/yr-1 and the potential yield is 23,26,047.61 tons/yr-1. implying high sediment flux into the estuarine system. The results of this study help to strategize inland soil conservation planning as well as estuarine management.

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Section: Introductionmentioning

confidence: 99%

Sediment yield from a tropical mountainous watershed by RUSLE model, An insight for sediment influx into the tropical estuary

Karapurkar,

Hegde

2023

Journal of Geomatics

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“…study of detrital zircons; results indicated that the minimum age of the provenance-rocks of the protoliths of the Sargur Group was younger than 3000 Ma (Nutman et al, 1992). Since then, many studies have been conducted on detrital mineral chemistry and mineral ages to decipher provenance and newly interpret interconnections between and shifts in source rocks and tectonics during sedimentation (e.g., Vadlamani et al, 2015;Chaudhuri et al, 2020;Paltekar et al, 2021). Combining U-Pb ages of detrital zircons and rutile, Bracciali et al (2015) showed that Brahmaputra pirated Yarlung Tsangpo only in the Miocene.…”

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A Distant View of Novel Research in Sedimentary Geology with Links to India Since Independence

Basu

2024

Journal of the Geological Society of India

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Dr. B.P Radhakrishna, the doyen of modern-day geological publications in India, lamented for decades that geologists (sensu lato) of Indian origin or working in India, tended not to publish in Indian journals. A recent echo, "… India has 26 huge sedimentary basins with tremendous resources potential but still why the JGSI is not receiving manuscripts from Indian sedimentologists?" prompts this editorial. The editorial does not provide an answer to the question, which will need research by social scientists with a comprehensive survey. Instead, this editorial dwells on a few selected publications to illustrate the robustness of fundamental and transformative research in sedimentary geology with links to India. Many may not have received adequate attention.At a time when there was no adequate way to determine the mean of azimuthal data, such as in paleocurrent measurements, Sengupta and Rao (1966) and Rao and Sengupta (1972) devised a mathematical treatment of such data to find statistically valid means of cross-bedding azimuths of sandstones in the Kamthi Formation (Gondwana) in Pranhita-Godavari valley. This rigorous data treatment, understandably because of some perceived formidable mathematics, never caught on with field geologists nor with those measuring lineation, plunges of folds, quartz c-axis orientations, etc. However, the work has spawned a full-fledged sub-field in statistics to inquire into circularly distributed data (e.g., Jammalamadaka et al., 2021).In seminal papers, Bhatia established that geochemical compositions of siliciclastic rocks, especially the distribution of trace elements in them, indicated their tectonic provenance (Bhatia, 1983;Bhatia and Crook, 1986). This was at a time when the novel petrographic method of Dickinson and Suczek (1979) dazzlingly dominated the field of sandstone provenance. The geochemical method is, however, superior to the petrographic method principally for two reasons. First, the former determines the tectonic provenance of sandstones and mudstones, but the latter applies only to sandstones. Second, data acquisition for the former is objective although commonly dependent on unseen analysts, but that for the latter is subjective and depends on petrographic skills of the microscopist who is responsible for recognizing pseudomatrix, altered feldspars, chert, etc. and is adept at using the Gazzi-Dickinson method of point counting (Gazzi, 1966;Dickinson, 1970). The insight into implications of geochemical properties of the assemblages of rocks in different tectonic settings is now time-honored, the basis of the protocol for sedimentary provenance investigations. Codified with rigorous statistical constraints Verma

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Dense mineral distribution in the northwestern Arabian Sea: insights into sediment provenance and paleoclimate

Dev,

Sahu,

Rai

et al. 2023

Arab J Geosci

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Geochemistry of heavy minerals from Uttara Kannada beach sediments, West Coast of India: an insight into provenance studies

Cited by 7 publications

References 28 publications

Sediment yield from a tropical mountainous watershed by RUSLE model, An insight for sediment influx into the tropical estuary

Sediment yield from a tropical mountainous watershed by RUSLE model, An insight for sediment influx into the tropical estuary

A Distant View of Novel Research in Sedimentary Geology with Links to India Since Independence

Dense mineral distribution in the northwestern Arabian Sea: insights into sediment provenance and paleoclimate

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