Diagenetic significance of carbon, oxygen and strontium isotopic compositions in the Aptian-Albian Mural Formation in Cerro Pimas area, northern Sonora, Mexico.

Madhavaraju, Jayagopal; Lee, Yong Il; González–León, Carlos M.

doi:10.5209/rev_jige.2013.v39.n1.41749

Cited by 20 publications

(14 citation statements)

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“…Nonetheless, it is well established that  13 C is virtually unaffected during early diagenesis (Hudson, 1977;Dickson and Coleman, 1980;Jenkyns and Clayton, 1986;Madhavaraju et al, 2013 (Table 2). Therefore, the highly depleted 13 C values in the El…”

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confidence: 99%

An enigmatic kilometer-scale concentration of small mytilids (Late Miocene, Guadalquivir Basin, S Spain)

Aguirre

Braga

Martín

et al. 2015

Palaeogeography, Palaeoclimatology, Palaeoecology

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Upper Miocene heterozoan carbonates crop out extensively in a NE-SW-trending belt (42 km long and 1.5-8 km wide) along the so-called El Alcor topographic high, from Carmona to Dos Hermanas (Seville, S Spain). These carbonates formed at the southern active margin of the Guadalquivir Basin, the foreland basin of the Betic Cordillera.They change to marls basinward (NE) and to sands landward (SE and SW). Therefore, carbonate production was constrained to a limited area in an otherwise siliciclastic shelf.The carbonates (up to 40 m thick) overlie a gradually coarsening-upward succession of marls followed by silts and sandstones. The carbonate sequence can be divided into three subunits corresponding, from bottom to top, to lowstand, transgressive, and highstands system tracts deposits. The lower subunit, exhibiting extensive trough crossbedding, is interpreted as a shallow-water bar deposit. The intermediate subunit onlaps underlying sediments and was deposited in deeper, low-turbulence conditions. The upper subunit deposits accumulated in a well-oxygenated outer platform based on benthic foraminiferal assemblages. The presence of hummocky and swaley crossstratification in these latter deposits suggests that they were affected by storms.Pervasive fluid-escape structures are also observed throughout the carbonates.The three subunits consist of bioclastic packstones to rudstones made up of abundant fragments of small mytilids. Isotopic data from serpulid polychaete Ditrupa tubes show 13 C-depleted values (up to -16.1‰), whereas  18 O yields normal marine values. Additional isotopic data on shells of scallops, oysters, and small mussels, as well as bulk sediment, show diagenetic alterations. Based on actualistic examples of massive concentrations of mussels, the nearly monospecific composition of the El Alcor deposits, together with negative  13 C values of Ditrupa tubes, indicates that cold seeps A C C E P T E D M A N U S C R I P T

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mentioning

confidence: 99%

An enigmatic kilometer-scale concentration of small mytilids (Late Miocene, Guadalquivir Basin, S Spain)

Aguirre

Braga

Martín

et al. 2015

Palaeogeography, Palaeoclimatology, Palaeoecology

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“…The Cerro La Espina Member of the Mural correlates with the lower Albian because of the presence of M. texana, C. ramosa, and colomiellids, and because Douvilleiceras is in the underlying Cerro La Puerta Formation (Gonz alez Le on et al, 2008). Isotopic numerical ages also indicate an early Albian age for the Cerro la Espina Member (Madharavaju et al, 2013).…”

Section: Biostratigraphymentioning

confidence: 93%

Voloshinoides sonorensis n. sp. (Cretaceous benthic foraminifera): A potential lower Albian marker of shallow-water carbonates in northern Mexico

Schlagintweit¹,

Scott²

2015

Cretaceous Research

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“…In addition, carbon isotopes are less prone to diagenetic changes than oxygen isotopes are (Hudson 1977;Anderson and Arthur 1983;Banner and Hanson 1990;Marshall 1992;Frank et al 1999). The marine carbonates mainly consist of skeletal and non-skeletal grains, with a certain amount of matrix material, and diagenetic processes may alter their primary isotopic signatures (Allan and Matthews 1982;Veizer 1983;Marshall 1992;Kaufman and Knoll 1995;Madhavaraju et al 2004Madhavaraju et al , 2013aArmstrong-Altrin et al 2011). In general, co-varying carbon and oxygen isotope trends in carbonate rocks indicate the infiltration of fluids containing isotopically light carbon and oxygen, such as meteoric water (Hudson 1977;Allen and Matthews 1982;Fisher et al 2005).…”

Section: Carbon and Oxygen Isotopic Variationsmentioning

confidence: 97%

“…The isotopic studies on the shallow marine carbonates of the Lower Cretaceous age have revealed & J. Madhavaraju jmadhavaraju@yahoo.com; mj@geologia.unam.mx evidence of paleo-oceanographic changes (Madhavaraju et al 2004(Madhavaraju et al , 2013aSial et al 2001;Marquillas et al 2007;Armstrong-Altrin et al 2009;Chamberlain et al 2013;Papp et al 2013) and global scale tectonic events (Gröcke et al 2005;Maheshwari et al 2005;Amodio et al 2008). Many researchers have documented that the variations in d 13 C seawater composition have been pelagic and hemiplegic carbonates from different locations and time periods (Weissert 1989;Föllmi et al 1994;Grötsch et al 1998;Wendler et al 2009).…”

Section: Introductionmentioning

confidence: 97%

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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Diagenetic significance of carbon, oxygen and strontium isotopic compositions in the Aptian-Albian Mural Formation in Cerro Pimas area, northern Sonora, Mexico.

Cited by 20 publications

References 93 publications

An enigmatic kilometer-scale concentration of small mytilids (Late Miocene, Guadalquivir Basin, S Spain)

An enigmatic kilometer-scale concentration of small mytilids (Late Miocene, Guadalquivir Basin, S Spain)

Voloshinoides sonorensis n. sp. (Cretaceous benthic foraminifera): A potential lower Albian marker of shallow-water carbonates in northern Mexico

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

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