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Professor Darren Grocke's Outputs (3)

A potential global stratotype for the Sinemurian_Pliensbachian boundary (Lower Jurassic), Robin Hood's Bay, UK: ammonite faunas and isotope stratigraphy. (2000)
Journal Article
Hesselbo, S., Meister, C., & Gröcke, D. (2000). A potential global stratotype for the Sinemurian_Pliensbachian boundary (Lower Jurassic), Robin Hood's Bay, UK: ammonite faunas and isotope stratigraphy. Geological Magazine, 137(6), 601-607. https://doi.org/10.1017/s0016756800004672

A coastal exposure at Wine Haven, Robin Hood's Bay (North Yorkshire, UK) fulfils the criteria for definition as the Global Stratotype Section and Point (GSSP) for the base of the Pliensbachian Stage (Lower Jurassic). This marine sequence was deposite... Read More about A potential global stratotype for the Sinemurian_Pliensbachian boundary (Lower Jurassic), Robin Hood's Bay, UK: ammonite faunas and isotope stratigraphy..

Integrated stratigraphy across the Aptian-Albian boundary in the Marnes Bleues, at the Col de Pré-Guittard, Arnayon (Drôme), and at Tartonne (Alpes-de-Haute-Provence), France: a candidate Global Boundary Stratotype Section and Boundary Point for the base of the Albian Stage. (2000)
Journal Article
Kennedy, W., Gale, A., Bown, P., Caron, M., Davey, R., Gröcke, D., & Wray, D. (2000). Integrated stratigraphy across the Aptian-Albian boundary in the Marnes Bleues, at the Col de Pré-Guittard, Arnayon (Drôme), and at Tartonne (Alpes-de-Haute-Provence), France: a candidate Global Boundary Stratotype Section and Boundary Point for the base of the Albian Stage. Cretaceous Research, 21(5), 591-720. https://doi.org/10.1006/cres.2000.0223

The history of definition of the Aptian-Albian boundary is reviewed with particular reference to the ammonite schemes of Brinkmann (1937), Breistroffer (1947), Casey (1961a, 1996, 1999), Kemper (1982), Owen (1996, 1999), and Ruffell & Owen (1995). Th... Read More about Integrated stratigraphy across the Aptian-Albian boundary in the Marnes Bleues, at the Col de Pré-Guittard, Arnayon (Drôme), and at Tartonne (Alpes-de-Haute-Provence), France: a candidate Global Boundary Stratotype Section and Boundary Point for the base of the Albian Stage..

Massive dissociation of gas hydrate during a Jurassic oceanic anoxic event. (2000)
Journal Article
Hesselbo, S., Gröcke, D., Jenkyns, H., Bjerrum, C., Farrimond, P., Morgans Bell, H., & Green, O. (2000). Massive dissociation of gas hydrate during a Jurassic oceanic anoxic event. Nature, 406(6794), 392-395. https://doi.org/10.1038/35019044

In the Jurassic period, the Early Toarcian oceanic anoxic event (about 183 million years ago) is associated with exceptionally high rates of organic-carbon burial, high palaeotemperatures and significant mass extinction1, 2, 3, 4. Heavy carbon-isotop... Read More about Massive dissociation of gas hydrate during a Jurassic oceanic anoxic event..