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Aptian anoxia in the Pacific Basin
Geology, 1989Marine strata of Aptian age in the Pacific Basin include two distinct levels that represent episodes during which sediments rich in organic carbon were deposited. Both episodes lasted less than 1 m.y., as revealed in strata deposited atop submerged topographic highs.
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Earth and Planetary Science Letters, 2011
We present initial isotopic ratios of lead for Early Cretaceous (Barremian–Aptian) sections from Shatsky Rise (Pacific) and Gorgo a Cerbara (Italy). Our Pb isotopic data track an interval representing Oceanic Anoxic Event (OAE)-1a, which is characterized by quasi-global deposition of organic carbon-rich black shale.
J. Kuroda +9 more
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We present initial isotopic ratios of lead for Early Cretaceous (Barremian–Aptian) sections from Shatsky Rise (Pacific) and Gorgo a Cerbara (Italy). Our Pb isotopic data track an interval representing Oceanic Anoxic Event (OAE)-1a, which is characterized by quasi-global deposition of organic carbon-rich black shale.
J. Kuroda +9 more
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An ocean‐facing Aptian–Albian carbonate margin, Oman
Sedimentology, 2001A high‐energy Aptian–Albian platform margin in northern Oman fronted onto an open oceanic basin, making the area a valuable analogue for coeval guyot margins. Most similar aged carbonate margins described in the literature faced either intracratonic or minor oceanic basins.
A. Immenhauser +4 more
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On the Classification of the Strata between the Kimeridgian and Aptian
Quarterly Journal of the Geological Society of London, 1896I. Schemes of Classification In the paper on the Speeton fauna, forming a part of the work which I wrote in conjunction with Mr. G. W. Lamplugh, I attempted to correlate the Upper Jurassic and the Lower Cretaceous horizons of Speeton with their equivalents in Russia and in different parts of Europe, and to give a general scheme of ...
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Comptes Rendus de l'Académie des Sciences - Series IIA - Earth and Planetary Science, 1997
Marly limestones from La Bedoule (Bouches-du-Rhone, SE France), historical type-locality of the lower Aptian, contain in their lowermost part a rich ammonite fauna belonging to the heteromorphic genus Pseudocrioceras. Up to the present this level, corresponding to the Pseudocrioceras coquandi Zone of Busnardo (1984), was considered by ammonitologists ...
Gérard Delanoy +6 more
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Marly limestones from La Bedoule (Bouches-du-Rhone, SE France), historical type-locality of the lower Aptian, contain in their lowermost part a rich ammonite fauna belonging to the heteromorphic genus Pseudocrioceras. Up to the present this level, corresponding to the Pseudocrioceras coquandi Zone of Busnardo (1984), was considered by ammonitologists ...
Gérard Delanoy +6 more
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The Barremian-Aptian arid phase in western Europe
Palaeogeography, Palaeoclimatology, Palaeoecology, 1990Abstract Evidence is presented from nine areas in western Europe (Speeton, Yorkshire; southern North Sea; Channel and Weald Basins, southern England; Jeanne d'Arc, Lusitanian and Aquitanian Basins of the North Atlantic continental margins; Lower Saxony Basin, north Germany; the Paris Basin and southern France) for a phase of aridity which began ...
Alastair H. Ruffell, David J. Batten
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Palaeogeography, Palaeoclimatology, Palaeoecology, 2016
Abstract The age of the Cretaceous Barremian-Aptian boundary has been a long-standing problem in the geological timescale. Age suggestions range between 126 Ma and 117 Ma, making causal links between environmental crises and large-scale processes such as large igneous provinces (LIPs) problematic.
Ivar Midtkandal +10 more
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Abstract The age of the Cretaceous Barremian-Aptian boundary has been a long-standing problem in the geological timescale. Age suggestions range between 126 Ma and 117 Ma, making causal links between environmental crises and large-scale processes such as large igneous provinces (LIPs) problematic.
Ivar Midtkandal +10 more
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A new cheilostome bryozoan from the British Aptian
Proceedings of the Geologists' Association, 1976A new species of cheilostome from the Lower Greensand of Faringdon (Aptian) is described and figured and an hypothesis for its origin discussed.
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