Carbon isotope stratigraphy: a tool for basin to carbonate platform correlation

Abstract

The Earlv Cretaceous carbonate carbon isotope stratigraphy analysed for their 0 and C isotope compositions. The C isotope -. . established in pelagic limestones is marked by several pronounced excursions towards positive S13C values. We investigated a biostratigraphically and palaeornagnetically calibrated Aptian section to see whether C isotope stratigraphy could be recognized in shallow-water carbonates. The chosen carbonate platform sections are located in southern Italy and have been dated by biostratigraphy. Bulk samples, chosen from the Barremian-Albian part of the sequence, were curve established shows two major positive excursions which can be correlated with the synchronous and globally recognized Aptian C isotope events. The data provide evidence that C isotope stratigraphy can be used as a powerful correlation tool between pelagic and shallow-water limestone sequences.

Late Devonian carbon isotope stratigraphy and sea level fluctuations, Canning Basin, Western Australia

“…139 proterozoic strata have been correlated using 140 large swings in N 13 C (Kaufman and Knoll, 1995;141 Ho¡man et al, 1998), and N 13 C variations have 142 been used locally to correlate basinal to reef plat-143 form facies in Cretaceous reef complexes (Grotsch 144 et al, 1998;Ferreri, 1997). A N 13 C curve for 145 upper Frasnian to lower Famennian strata has 146 already been de¢ned from European, North 147 American, and Australian stratigraphic sections 148 (Joachimski and Buggisch, 1993;Wang et al, 149 1996;Joachimski et al, 2002) (Playford, 182 1980;Hurley, 1986 (Holmes and Christie-Blick, 1993;Southgate et 190 al., 1993) that accommodated over 2 km of vonian strata (Brown et al, 1984 (Ward, 1999 (Hurley, 1986).…”

Shallow water carbonate platforms (Late Aptian–Early Albian, Southern Apennines) in the context of supraregional to global changes: re-appraisal of palaeoecological events as reflectors of carbonate factory response

“…According to Ferreri et al (1997) and, carbon isotope curves from several shallowwater carbonate sections in the Southern Apennines evidence that the positive δ 13 C spike reflecting the Selli Event clearly underlies the "Orbitolina Level". This level is placed close to the boundary of the G. algerianus/G.…”

Environmental consequences of Ontong Java Plateau and Kerguelen Plateau volcanism

“…In particular, OAE 1a is marked by a complex C isotopic anomaly that has been recognized in the Tethys, North Atlantic, and Pacifi c Oceans (Weissert, 1989;Weissert and Lini, 1991;Grötsch, 1993;Bralower et al, 1994Bralower et al, , 1999Jenkyns, 1995;Vahrenkamp, 1996Vahrenkamp, , 2010Ferreri et al, 1997;Menegatti et al, 1998;Erba et al, 1999;Jenkyns and Wilson, 1999;Luciani et al, 2001;Ando et al, 2002;Bellanca et al, 2002;Price, 2003;Immenhauser et al, 2005;Millán et al, 2009;Hu et al, 2012a;Huck et al, 2012;Bottini et al, 2014), and in terrestrial sequences (Gröcke et al, 1999;Hesselbo et al, 2000;Jahren et al, 2001;Heimhofer et al, 2003). An initial negative spike documented in marine and terrestrial records suggests a large input of isotopically light carbon into the ocean-atmosphere system, perhaps due to intensifi ed volcanogenic CO 2 emissions during the GOJE (Larson, 1991a;Weissert and Lini, 1991;Bralower et al, 1994;Erba, 1994;Weissert et al, 1998;Menegatti et al, 1998;Larson and Erba, 1999;Price, 2003), methane liberation from gas-hydrate dissociation (Gröcke et al, 1999;Hesselbo et al, 2000;Jahren et al, 2001;Beerling et al, 2002;…”