Isotopic results from Site TDP22
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1 GSA DATA REPOSITORY K.G. MacLeod et al. Isotopic results from Site TDP Figure DR. Oxygen and carbon isotopic data for from TDP plotted relative to subsurface depth. Foraminiferal zones shown to left from Huber and Petrizzo (in press). Lines go through average of values if a taxon was analyzed multiple times from the same sample. The temperature scale is appropriate for calcitic shells secreted in equilibrium with seawater having a 8 O value of - VSMOW. For aragonitic Epistomina spp., observed 8 O of values of - VPDB correspond to paleotemperature estimates of ~0 C. W. Whiteinella; H. Helvetoglobotruncana; D. Dicarinella; P. Praeglobotruncana; G. Globoheterohelix. Huber, B.T. and Petrizzo, in press, Evolution and taxonomic study of the Cretaceous planktonic foraminifer Genus Helvetoglobotruncana Reiss, 957: Journal of Foraminiferal Research.
2 Additional Discussion of Turonian Timescales To explore the differences between timescales (Fig. DR), we calculated datum ages for planktic foraminifer zonal markers using biostratigraphic occurrence data from Caron et al. (006) and the age model of Meyers et al. (0) for the Cenomanian/Turonian boundary Global Stratotype, Section and Point near Pueblo, Colorado. The calibrated events are underscored and calculated ages are shown in parentheses. Non-underscored names to the right are for calcareous nannofossil zonal datum markers, which do not occur in the Pueblo section and have not been age calibrated in any other sequence. Figure DR. A comparison of the 004 vs. 0 geologic time scales (GTS) of Gradstein et al. (004, 0) is shown. Note significant offsets in ages, particularly for the Turonian, assigned to calcareous nannofossil (CC: Sissingh, 977; UC: Burnett et al., 998) and planktic foraminiferal biozones. Differences are discussed below. The Pueblo ages for the Last Appearance Datum (LAD) of Rotalipora cushmani (downward pointing triangles) and First Appearance Datum (FAD) (upward pointing triangles) of Helvetoglobotruncana helvetica show good agreement with GTS 0. However, dates for the LAD of H. helvetica do not. The calculated age of the LAD for H. helvetica (9.77) at Pueblo, is younger than the 9.99 Ma extinction age used in GTS 0. Further, this age is a maximum estimate since H. helvetica occurs to the top of the outcrop in the Pueblo GSSP section so the extinction horizon is presumably younger, and potentially much younger than suggested by GTS 0. The position of the CC/CC zonal boundary also was placed in the lower Marginotruncana schneegansi Zone in GTS 004 and was moved to the top of the H. helvetica Zone in GTS 0. No explanation or documentation is provided for this change in relative timing, but the CC/CC boundary does occur in the upper H. helvetica Zone in Tanzania (Jimenez Berrocoso et al., 0). What is most important with respect to nannofossil age assignments for the TDP 3 sequence and correlation to the results in Bornemann et al. (008) is that the first occurrences of the calcareous nannofossil CC/CC zonal boundary marker Eiffelithus eximius and UC8/UC9 zonal boundary marker Lithastrinus septenarius all occur within the a well documented portion of TDP3. Thus, by all available data, the oxygen isotopic
3 data from TDP 3 spans the intervals of Turonian ice sheet growth that were proposed by Miller et al. (004), Bornemann et al. (008) and Galeotti et al. (009). Refereences Bornemann, A., Norris, R. D., Friedrich, O., Beckmann, B., Schouten, S., Sinninghe Damsté, J. S., Vogel, J., Hofmann, P., and Wagner, T., 008, Isotopic evidence for glaciation during the Cretaceous Supergreenhouse: Science, v. 39, p Burnett, J. A., 998, Upper Cretaceous, in Bown, P. R., ed., Calcareous Nannofossil Biostratigraphy, British Micropalaeontological Society Series: London, Chapman & Hall/Kluwer Academic Press, p Caron, M., Dall'Agnolo, S., Accarie, H., Barrera, E., Kauffman, E. G., Amédro, F., and Robaszynski, F., 006, High-resolution stratigraphy of the Cenomanian-Turonian boundary interval at Pueblo (USA) and Wadi Bahloul (Tunisia): stable isotope and bio-events correlation: Géobios, v. 39, p Galeotti, S., Rusciadelli, G., Sprovieri, M., Lanci, L., Gaudio, A., and Pekar, S., 009, Sea-level control on facies architecture in the Cenomanian-Coniacian Apulian margin (Western Tethys): A record of glacio-eustatic fluctuations during the Cretaceous greenhouse?: Palaeogeography, Palaoeclimatology, Palaeoecology, v. 76, p Gradstein, F. M., Agterberg, F. P., Ogg, J. G., Hardenbol, J., van Veen, P., Thierry, J., and Huang, Z., 994, A Mesozoic time scale: Journal of Geophysical Research, v. 99, p. 4,05-04,074. Gradstein, F. M., Ogg, J. G., Schmitz, M. D., and Ogg, G. M., 0, The Geologic Time Scale 0, Amsterdam, The Netherlands, Elsevier. Jiménez Berrocoso, Á., and 6 others, 0, Lithostratigraphy, biostratigraphy and chemostratigraphy of Upper Cretaceous and Paleogene sediments from southern Tanzania: Tanzania Drilling Project Sites 7 to 35: African Journal of Earth Sciences, v. 70, p , doi:0.06/j.jafrearsci Meyers, S. R., Siewert, S. E., Singer, B. S., Sageman, B. B., Condon, D. J., Obradovich, J. D., Jicha, B. R., and Sawyer, D. A., 0, Intercalibration of radioisotopic and astrochronologic time scales for the Cenomanian-Turonian boundary interval, Western Interior Basin, USA: Geology, v. 40, p. 7-0, doi:0.30/g Miller, K. G., Sugarman, P. J., Browning, J. V., Kominz, M. A., Olsson, R. K., Feigenson, M. D., and Hernández, J. C., 004, Upper Cretaceous sequences and sea-level history, New Jersey Coastal Plain: Geological Society of America Bulletin, v. 6, p Sissingh, W., 977, Biostratigraphy of Cretaceous calcareous nannoplankton: Geologie en Mijnbouw, v. 56, p
4 Table DR. Core samples, subsurface depths and oxygen and carbon isotope data from TDP. Site Core Section cm interval Sample depth (m) Lenticulina spp. Epistomina spp. Berthelina sp. Osangularia sp. Dicarinella elata Dicarinella hagni Dicarinella imbricata Dicarinellabouldingensis Dicarinella spp. Globoheterohelix paraglobosa Heterohelix globulosa Huberella praehuberi Heterohelix spp. Helvetoglobotruncana helvetica Helvetoglobotruncana praehelvetica Praeglobotruncana stephani/p. gibba Whiteinella aprica Whiteinella aumaleusis Whiteinella baltica Whiteinella bornholmensis Whiteinella brittonensis Whiteinella paradubia Whiteinella spp. 3 C 8 O 3 C 8 O 3 C 8 O 3 C 8 O 3 C 8 O 3 C 8 O 3 C 8 O 3 C 8 O 3 C 8 O 3 C 8 O 3 C 8 O 3 C 8 O 3 C 8 O 3 C 8 O 3 C 8 O 3 C 8 O 3 C 8 O 3 C 8 O 3 C 8 O 3 C 8 O 3 C 8 O 3 C 8 O 3 C 8 O
5 to & 95-03(?)
6 Table DR. Core samples, subsurface depths, and oxygen and carbon isotope data from TDP 3. TDP 3 core Section Depth interval () Depth below surface (m) Berthelina berthelini Lingulagavelinella convexa Lenticulina sp. Lenticulina sp. Lenticulina spp. Epistomina spp. Epistomina chapmani Epistomina sp. Epistomina sp.3 Epistomina sp.4 Epistomina sp.5 Dicarinella elata Dicarinella hagni Whiteinella aprica Whiteinella brittonensis Praeglobotruncana stephani/gibba Helvetoglobotruncana praehelvetica/helvetica Marginotruncana renzi Marginotruncana pseudolinneiana Mixed heterohelicids Huberella praehuberi Globoheterohelix paraglobulosa Whiteinella baltica 3 C 8 O 3 C 8 O 3 C 8 O 3 C 8 O 3 C 8 O 3 C 8 O 3 C 8 O 3 C 8 O 3 C 8 O 3 C 8 O 3 C 8 O 3 C 8 O 3 C 8 O 3 C 8 O 3 C 8 O 3 C 8 O 3 C 8 O 3 C 8 O 3 C 8 O 3 C 8 O 3 C 8 O 3 C 8 O 3 C 8 O 9-0cm cm cm cm 8-46cm -0cm cm cm 30-50cm cm cm cm cm cm cm cm cm 0-40cm cm cm 45-65cm 50-70cm cm cm 49-70cm cm cm 45-65cm cm
7 cm cm cm cm cm cm cm cm cm cm cm cm cm cm cm cm cm cm cm cm cm cm cm cm cm cm cm cm cm cm cm cm cm cm cm cm cm cm cm cm
8 cm cm cm cm cm cm cm cm cm cm cm cm
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