2016
DOI: 10.3906/yer-1503-4
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Geochemistry of Proterozoic clastic rocks of the Kerur Formation of Kaladgi-Badami Basin, North Karnataka, South India: implications for paleoweathering and provenance

Abstract: Major, trace, and rare earth element (REE) studies have been conducted on the Proterozoic clastic rocks of the Kerur Formation of the Kaladgi-Badami Basin, South India, to determine their paleoweathering conditions and provenance characteristics. Geochemically, these sedimentary rocks are classified as quartz arenite, arkose, litharenite, and sublitharenite. The chemical index of alteration values and the A-CN-K diagram suggest that the clastics rocks in this study underwent moderate to intensive weathering. C… Show more

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Cited by 38 publications
(14 citation statements)
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“…Various researchers have proposed different types of weathering indices (Nesbitt and Young, 1982;Harnois, 1988) and these indices are commonly used by many researches around the globe (Madhavaraju and Ramasamy, 2002;Armstrong-Altrin et al, 2004;Nagarajan et al, 2007a,b;Bhuiyan et al, 2011;Sun et al, 2012;Madhavaraju, 2015;Ramachandran et al, 2016). Few examples are weathering index of Parker (WIP;Parker, 1970), chemical index of weathering (CIW; Harnois, 1988), chemical index of alteration (CIA; Nesbitt and Young, 1982) and plagioclase index of alteration (PIA; Fedo et al, 1995).…”
Section: Source-area Weatheringmentioning
confidence: 98%
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“…Various researchers have proposed different types of weathering indices (Nesbitt and Young, 1982;Harnois, 1988) and these indices are commonly used by many researches around the globe (Madhavaraju and Ramasamy, 2002;Armstrong-Altrin et al, 2004;Nagarajan et al, 2007a,b;Bhuiyan et al, 2011;Sun et al, 2012;Madhavaraju, 2015;Ramachandran et al, 2016). Few examples are weathering index of Parker (WIP;Parker, 1970), chemical index of weathering (CIW; Harnois, 1988), chemical index of alteration (CIA; Nesbitt and Young, 1982) and plagioclase index of alteration (PIA; Fedo et al, 1995).…”
Section: Source-area Weatheringmentioning
confidence: 98%
“…Mafic and felsic source rocks differ significantly in the ratios such as Eu/Eu*, (La/Lu)cn, La/Sc, Th/Sc, La/Co, Th/Co, and Cr/Th and hence provide useful information about the provenance of sedimentary rocks (e.g., Cullers et al, 1988;Cullers, 1994aCullers, ,b, 2000Cullers and Podkovyrov, 2000;Armstrong-Altrin et al, 2004Madhavaraju et al, , 2016aMadhavaraju, 2015;Ramachandran et al, 2016). In this study, Eu/Eu*, (La/Lu)cn, La/Sc, Th/Sc, La/Co, Th/Co, and Cr/Th values of the PP, DE and BK sands are similar to values for sediments derived from felsic source rocks than to those for mafic source rocks (Table 6), suggesting derivation from felsic source rocks.…”
Section: Provenancementioning
confidence: 98%
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“…No other trace and/or rare earth elements show good interrelation to V. In addition, scattered V stream sediment point anomalies on studied location might be caused by local geological substrate or by coprecipitation conditions in that should be investigated locally. Chromium is a lithophile metallic element and its elevated Cr value is an indicative of mafic or ultramafic rocks [3], [27]. Very low Cr contents in association with elevated values of K, Th, U and REE may indicate the presence of felsic rocks, which explain the chemical abundances on SSS 48-SSS 50.…”
Section: Trace Elements Compositionmentioning
confidence: 99%
“…The petrography and geochemical composition of clastic rocks provide valuable information regarding their provenance and tectonic setting (Cingolani, Manassero, & Abre, ; Jafarzadeh & Hosseini‐Barzi, ; McLennan & Taylor, ). Geochemical studies on clastic rocks have long been used to identify the provenance characteristics (Armstrong‐Altrin et al, ; Concepcion et al, ; Madhavaraju, ; Madhavaraju & Ramasamy, ; Moosavirad, Janardhana, Sethumadhav, Moghadam, & Shankara, ; Ramachandran et al, ; Raza, Ahmad, Khan, & Khan, ; Srivastava, Randive, & Khare, ; Velmurugan et al, ). The geochemistry of clastic sedimentary rocks is considered a powerful tool in the study of provenance, tectonic setting, and palaeoclimatic conditions (e.g., Absar, Raza, Roy, Naqvi, & Roy, ; Bhatia, ; Madhavaraju & Lee, ; Nesbitt & Young, ; Taylor & McLennan, ).…”
Section: Introductionmentioning
confidence: 99%