Sequence surfaces and paleobathymetric trends in Albian to Maastrichtian sediments of Ariyalur area, Cauvery Basin, India

Nagendra, R.; Kannan, Bharathi; Sen, Gargi; Gilbert, Harry; Bakkiaraj, D.; Reddy, A. Varada; Jaiprakash, B. C.

doi:10.1016/j.marpetgeo.2010.04.002

Cited by 64 publications

(59 citation statements)

References 15 publications

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“…In the subsequent century most of the work focused on establishing the macro-and microfossil biostratigraphy and lithostratigraphy. In the past two decades, a few interpretation on sea level changes of the entire Cretaceous succession of the Cauvery Basin have been carried out taking into account the transgressiveeregressive cycles deduced from lithological and megaand micro-fossil data (Tewari et al, 1996a;Sundaram et al, 2001;Ramkumar et al, 2004;Raju et al, 2005;Watkinson et al, 2007;Nagendra et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

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Sea level changes in the upper Aptian-lower/middle(?) Turonian sequence of Cauvery Basin, India – An ichnological perspective

Paranjape

Kulkarni

Kale

2015

Cretaceous Research

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Section: Introductionmentioning

confidence: 99%

“…However, detailed ichnological studies of the Cretaceous deposits were lacking. Sequence stratigraphic studies in the basin are also rare and deal with broad aspects (Kale, 2011;Nagendra et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

Sea level changes in the upper Aptian-lower/middle(?) Turonian sequence of Cauvery Basin, India – An ichnological perspective

Paranjape

Kulkarni

Kale

2015

Cretaceous Research

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“…The marl unit contains planktonic foraminifera Hedbergella simplex and several species of dinoflagellate cysts (Nagendra et al 2002). The occurrence of various fossil assemblages such dinoflagellates and foraminifera in the Dalmiapuram Formation suggests the late Albian to middle Turonian age (Nagendra et al 2011b). For the present study, we have followed the age proposed by later datation which has been the most recent micropalaeontologic research up to now on this formation.…”

Section: Geology and Stratigraphymentioning

confidence: 99%

“…The upper part of the section shows more fluctuation in the d 13 C values and a particularly strong negative shift is recorded in the marl as -6.07 % VPDB. According to Nagendra et al (2011b), the age of the Dalmiapuram Formation is late Albian to middle Turonian. The Vadugarpettai section might have registered a single or multiple Albian OAEs (e.g., OAE1c and OAE1d).…”

Section: Carbon and Oxygen Isotopic Variationsmentioning

confidence: 99%

Petrography and stable isotopic variations in Dalmiapuram Formation of Cauvery Basin, South India: implication on OAE1d

et al. 2015

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Petrography, carbon and oxygen isotopic study was carried out to interpret isotopic variations on the predominant carbonate sequence of the Dalmiapuram Formation of the Cauvery Basin, South India. The common petrographic types identified in the Dalmiapuram Formation range from wackestone to boundstone. The gray shale and limestone members show large variations in d 13 C and d 18 O values (Gray shale member: ?1.44 to ?2.40 % VPDB, -3.05 to -5.92 % VPDB, respectively; Limestone member: -6.07 to ?2.93 % VPDB; -7.08 to -0.39 % VPDB; respectively). In the present study, the carbon and oxygen values are not correlated, which supports the fact that these limestones retain their primary isotopic signatures. In carbon isotope curve, one negative shift is identified in the gray shale member and a positive isotopic excursion is detected in the coral algal limestone (CAL). The observed positive isotopic excursion in the lower part of the CAL correlates with OAE1d and suggests the global nature of the late Albian OAE1d in the Cauvery Basin.

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“…Outcrop Albian-Maastrichtian sediments grouped into four second/third order sequences . In which, the Ariyalur area provides the complete Campanian-Maastrichtian succession and afforded scientific contribution on stratigraphy, paleontology, sequence stratigraphy, paleoclimate, provenance, and tectonic evolution of the succession (Ayyasami 2006;Bakkiaraj et al 2010;Banerji 1979;Govindan et al 1996;Madhavaraju and Ramasamy 1999a, b;Madhavaraju et al 2002;Nagendra et al 2001Nagendra et al , 2002aNagendra et al , b, 2003Nagendra et al , 2010Purnachandra Rao et al 2007;Ramanathan 1979;Ramasamy and Banerji 1991;Ramasamy et al 1995;Sundaram and Rao 1986). Ariyalur Group of rocks (Campanian-Maastrichtian) is represented by Sillakkudi and Kallankurichchi Formations except Kallamedu Formation, deposited in the marginal marine environments (Madhavaraju and Ramasamy 1999b;Madhavaraju and Lee 2009;Sundaram and Rao 1986), and sediments of Kallamedu Formation were influenced by Deccan volcanism (Madhavaraju and Lee 2010).…”

Section: Geological Settingmentioning

confidence: 99%

Depositional and post-depositional setting of Maastrichtian limestone, Ariyalur Group, Cauvery Basin, South India: a geochemical appraisal

Nagendra

Nagarajan

Bakkiaraj

et al. 2011

Carbonates Evaporites

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Major, trace, REE, and stable isotopic composition of Maastrichtian limestones of Cauvery Basin were studied to decipher their depositional and post-depositional environment. The major oxides and trace elements concentration of these limestones were normalized using Post-Archean Australian Shale (PAAS) values. The concentration of CaO is having a significant enrichment, and MgO, K 2 O, Co, Ni, Cu, Zn, Pb, Ba, U, and Th are moderately depleted, whereas Sr and Na 2 O contents are relatively similar to the PAAS values. The PAAS-normalized REE ? Y pattern of Maastrichtian limestones display relatively uniform pattern among the compositionally different limestones: (1) enriched LREE (average Nd SN /Yb SN = 5.03 ± 0.92); (2) positive Ce anomaly (average 1.79 ± 0.16); (3) negative Gd SN /Gd* anomaly (average 0.52 ± 0.02); (4) low Y/Ho ratio (average Y/Ho = 0.14 ± 0.01). The average RREE contents in ferruginous, arenaceous, and biostromal limestones are 65, 64, and 52 ppm, respectively, which indicate that the mineralogical variation plays a major role in incorporation of RREE. The Kallankurichchi limestones have d 13 C values range from -3.2 to -1.1% PDB , and the d 18 O values range between -7.8 and -5.5% PDB . The negative d 13 C and d 18 O values and a moderate co-variation between d 13 C and d 18 O (r 2 = 0.35) indicate that the alteration of original isotopic composition is due to diagenesis. The positive Ce/Ce* confirms the clastic input into the system, and negative Mn* values and Th/U ratios (*0.29-1.4) in these limestones indicate their association with precipitation of carbonates in reducing (anoxic-dysoxic: Th/U B 2) conditions.

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Sequence surfaces and paleobathymetric trends in Albian to Maastrichtian sediments of Ariyalur area, Cauvery Basin, India

Cited by 64 publications

References 15 publications

Sea level changes in the upper Aptian-lower/middle(?) Turonian sequence of Cauvery Basin, India – An ichnological perspective

Sea level changes in the upper Aptian-lower/middle(?) Turonian sequence of Cauvery Basin, India – An ichnological perspective

Petrography and stable isotopic variations in Dalmiapuram Formation of Cauvery Basin, South India: implication on OAE1d

Depositional and post-depositional setting of Maastrichtian limestone, Ariyalur Group, Cauvery Basin, South India: a geochemical appraisal

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