Professor Darren Grocke's Outputs (7)

A revised northern European Turonian (Upper Cretaceous) dinoflagellate cyst biostratigraphy: Integrating palynology and carbon isotope events (2014)
Journal Article
Olde, K., Jarvis, I., Pearce, M., Ulicný, D., Tocher, B., Trabucho-Alexandre, J., & Gröcke, D. (2015). A revised northern European Turonian (Upper Cretaceous) dinoflagellate cyst biostratigraphy: Integrating palynology and carbon isotope events. Review of Palaeobotany and Palynology, 213, 1-16. https://doi.org/10.1016/j.revpalbo.2014.10.006

Organic walled dinoflagellate cyst (dinocyst) assemblage data are presented for a new Turonian regional reference core (Bch-1) drilled at Běchary in the Bohemian Cretaceous Basin, east-central Czech Republic. The detailed stratigraphic framework for... Read More about A revised northern European Turonian (Upper Cretaceous) dinoflagellate cyst biostratigraphy: Integrating palynology and carbon isotope events.

The Pliensbachian-Toarcian (Early Jurassic) extinction: A North American perspective. (2014)
Book Chapter
Caruthers, A., Smith, P., & Gröcke, D. (2014). The Pliensbachian-Toarcian (Early Jurassic) extinction: A North American perspective. In Volcanism, Impacts, and Mass Extinctions: Causes and Effects (225-243). Geological Society of America. https://doi.org/10.1130/2014.2505%2811%29

Currently, it is believed that volcanogenic outgassing of CO2 during Karoo-Ferrar igneous province eruptions caused prolonged global warming and a multiphased extinction event during the Pliensbachian–Toarcian interval of the Early Jurassic. Warmer w... Read More about The Pliensbachian-Toarcian (Early Jurassic) extinction: A North American perspective..

Paleoenvironmental conditions recorded by 87Sr/86Sr, δ13C and δ18O in late Pliensbachian–Toarcian (Jurassic) belemnites from Bulgaria (2014)
Journal Article
Metodiev, L., Savov, I., Gröcke, D., Wignall, P., Newton, R., Andreeva, P., & Koleva-Rekalova, E. (2014). Paleoenvironmental conditions recorded by 87Sr/86Sr, δ13C and δ18O in late Pliensbachian–Toarcian (Jurassic) belemnites from Bulgaria. Palaeogeography, Palaeoclimatology, Palaeoecology, 409, 98-113. https://doi.org/10.1016/j.palaeo.2014.04.025

The late Pliensbachian–Toarcian (Jurassic) sedimentological, paleontological and geochemical (belemnite 87Sr/86Sr, δ13C and δ18O) record is examined in two Eastern Tethyan (Bulgarian) locations. This interval contains the well-known early Toarcian oc... Read More about Paleoenvironmental conditions recorded by 87Sr/86Sr, δ13C and δ18O in late Pliensbachian–Toarcian (Jurassic) belemnites from Bulgaria.

New high resolution geochemistry of Lower Jurassic marine sections in western North America: A global positive carbon isotope excursion in the Sinemurian? (2014)
Journal Article
Porter, S., Smith, P., Carruthers, A., Hou, P., Gröcke, D., & Selby, D. (2014). New high resolution geochemistry of Lower Jurassic marine sections in western North America: A global positive carbon isotope excursion in the Sinemurian?. Earth and Planetary Science Letters, 397, 19-31. https://doi.org/10.1016/j.epsl.2014.04.023

Recognising variations in the carbon isotope compositions of marine organic-rich sedimentary rocks can provide insight into changes in ocean chemistry throughout geological time. Further, identification of global excursions in the carbon isotope reco... Read More about New high resolution geochemistry of Lower Jurassic marine sections in western North America: A global positive carbon isotope excursion in the Sinemurian?.

A high-resolution carbon-isotope record of the Turonian stage correlated to a siliciclastic basin fill: Implications for mid-Cretaceous sea-level change (2014)
Journal Article
Ulicný, D., Jarvis, I., Gröcke, D., Cech, S., Laurin, J., Olde, K., …Pedentchouk, N. (2014). A high-resolution carbon-isotope record of the Turonian stage correlated to a siliciclastic basin fill: Implications for mid-Cretaceous sea-level change. Palaeogeography, Palaeoclimatology, Palaeoecology, 405, 42-58. https://doi.org/10.1016/j.palaeo.2014.03.033

Turonian strata of the Bohemian Cretaceous Basin, Central Europe, preserve a basin-scale record of shoreline transgressions and regressions, previously interpreted to have been strongly influenced by short-term eustatic cycles. Here, nearshore silici... Read More about A high-resolution carbon-isotope record of the Turonian stage correlated to a siliciclastic basin fill: Implications for mid-Cretaceous sea-level change.

Organic geochemistry of the early Toarcian oceanic anoxic event in Hawsker Bottoms, Yorkshire, England (2014)
Journal Article
French, K., Sepúlveda, J., Trabucho-Alexandre, J., Gröcke, D., & Summons, R. (2014). Organic geochemistry of the early Toarcian oceanic anoxic event in Hawsker Bottoms, Yorkshire, England. Earth and Planetary Science Letters, 390, 116-127. https://doi.org/10.1016/j.epsl.2013.12.033

A comprehensive organic geochemical investigation of the Hawsker Bottoms outcrop section in Yorkshire, England has provided new insights about environmental conditions leading into and during the Toarcian oceanic anoxic event (T-OAE; ∼183 Ma). Rock-E... Read More about Organic geochemistry of the early Toarcian oceanic anoxic event in Hawsker Bottoms, Yorkshire, England.

Marine 187Os/188Os isotope stratigraphy reveals the interaction of volcanism and ocean circulation during Oceanic Anoxic Event 2 (2014)
Journal Article
Du Vivier, A., Selby, D., Sageman, B., Jarvis, I., Gröcke, D., & Voigt, S. (2014). Marine 187Os/188Os isotope stratigraphy reveals the interaction of volcanism and ocean circulation during Oceanic Anoxic Event 2. Earth and Planetary Science Letters, 389(1), 23-33. https://doi.org/10.1016/j.epsl.2013.12.024

High-resolution osmium (Os) isotope stratigraphy across the Cenomanian–Turonian Boundary Interval from 6 sections for four transcontinental settings has produced a record of seawater chemistry that demonstrates regional variability as a function of t... Read More about Marine 187Os/188Os isotope stratigraphy reveals the interaction of volcanism and ocean circulation during Oceanic Anoxic Event 2.