Professor Darren Grocke's Outputs (5)

Marine osmium isotope record across the Triassic-Jurassic boundary from a Pacific pelagic site. (2010)
Journal Article
Kuroda, J., Hori, R., Suzuki, K., Gröcke, D., & Ohkouchi, N. (2010). Marine osmium isotope record across the Triassic-Jurassic boundary from a Pacific pelagic site. Geology, 38(12), 1095-1098. https://doi.org/10.1130/g31223.1

The Triassic-Jurassic (T-J) boundary ca. 200 Ma represents one of the major mass extinction events of the Phanerozoic; however, the cause of this event remains controversial because of a paucity of geological evidence. In this study we present an iso... Read More about Marine osmium isotope record across the Triassic-Jurassic boundary from a Pacific pelagic site..

Hydrogen Isotopes in Beetle Chitin (2010)
Book Chapter
Gröcke, D., van Hardenbroek, M., Sauer, P., & Elias, S. (2010). Hydrogen Isotopes in Beetle Chitin. In N. S. Gupta (Ed.), Chitin : formation and diagenesis (105-116). Springer Netherlands. https://doi.org/10.1007/978-90-481-9684-5_5

Beetles, one of the most diverse and long-lived animal groups, provide a trove of ecological and palaeoenvironmental information largely because their exoskeletons contain chitin, a highly resistant biopolymer which preserves well in the geological r... Read More about Hydrogen Isotopes in Beetle Chitin.

The Valanginian positive carbon isotope event in Arctic Russia: Evidence from terrestrial and marine isotope records and implications for global carbon cycling (2010)
Journal Article
Nunn, E., Price, G., Gröcke, D., Baraboshkin, E., Leng, M., & Hart, M. (2010). The Valanginian positive carbon isotope event in Arctic Russia: Evidence from terrestrial and marine isotope records and implications for global carbon cycling. Cretaceous Research, 31(6), 577-592. https://doi.org/10.1016/j.cretres.2010.07.007

The data presented here comprise Ryazanian–Valanginian carbon isotope ratios analyzed from fossil wood and belemnites from the shallow marine Boyarka River succession in Siberia. Additional belemnite carbon isotope ratios from the Izhma River success... Read More about The Valanginian positive carbon isotope event in Arctic Russia: Evidence from terrestrial and marine isotope records and implications for global carbon cycling.

Tracking the Hirnantian glaciation using Os isotopes (2010)
Journal Article
Finlay, A., Selby, D., & Gröcke, D. (2010). Tracking the Hirnantian glaciation using Os isotopes. Earth and Planetary Science Letters, 293(3-4), 339-348. https://doi.org/10.1016/j.epsl.2010.02.049

Here we present initial 187Os/188Os (Osi) values integrated with δ13Corg for the first Paleozoic section — the Ordovician/Silurian boundary GSSP at Dob's Linn, Scotland. Our 187Os/188Os data tracks major changes in climate that occurred during the La... Read More about Tracking the Hirnantian glaciation using Os isotopes.

Regional differences in bone collagen δ13C and δ15N of Pleistocene mammoths: Implications for paleoecology of the mammoth steppe (2010)
Journal Article
Szpak, P., Gröcke, D., Debruyne, R., MacPhee, R., Guthrie, R., Froese, D., …Poinar, H. (2010). Regional differences in bone collagen δ13C and δ15N of Pleistocene mammoths: Implications for paleoecology of the mammoth steppe. Palaeogeography, Palaeoclimatology, Palaeoecology, 286(1-2), 88-96. https://doi.org/10.1016/j.palaeo.2009.12.009

In this study, we present bone collagen δ13C and δ15N values from a large set of Pleistocene woolly mammoths (Mammuthus primigenius) from Siberia, Alaska and Yukon. Overall, results for mammoth specimens from eastern Beringia (Alaska and Yukon) signi... Read More about Regional differences in bone collagen δ13C and δ15N of Pleistocene mammoths: Implications for paleoecology of the mammoth steppe.