Astrochronology of the Valanginian–Hauterivian stages (Early Cretaceous): Chronological relationships between the Paraná–Etendeka large igneous province and the Weissert and the Faraoni events

Martínez, Mathieu; Deconinck, Jean‐François; Pellenard, Pierre; Riquier, Laurent; Reboulet, Stéphane; Moiroud, Mathieu

doi:10.1016/j.gloplacha.2015.06.001

Cited by 93 publications

(88 citation statements)

References 81 publications

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“…Indeed, the data Cogné and Humler (2006) do possibly point to higher overall seafloor spreading rates for the Late Jurassic. Notably, the Paraná-Etendeka large igneous province is Valanginian-Hauterivian in age with volcanic activity starting at 134.6 ± 0.6 Ma or at 134.3 ± 0.8 Ma (Thiede and Vasconcelos, 2010;Janasi et al, 2011) coincident with the onset of the Weissert Event (Martinez et al, 2015). The Sr-isotope data at this time ( Fig.…”

Section: Accepted M Manuscriptmentioning

confidence: 83%

Carbon cycle history through the Jurassic–Cretaceous boundary: A new global δ13C stack

Price

Főzy

Pálfy

2016

Palaeogeography, Palaeoclimatology, Palaeoecology

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We present new carbon and oxygen isotope curves from sections in the Bakony Mts. (Hungary), constrained by biostratigraphy and magnetostratigraphy in order to evaluate whether carbon isotopes can provide a tool to help establish and correlate the last system boundary remaining undefined in the Phanerozoic as well provide data to better understand the carbon cycle history and environmental drivers during the Jurassic-Cretaceous interval. We observe a gentle decrease in carbon isotope values through the Late Jurassic. A pronounced shift to more positive carbon isotope values does not occur until the Valanginian, corresponding to the Weissert event. In order to place the newly obtained stable to relatively stable δ 13 C values, compounded by a slope which is too slight. There is no clear isotopic marker event for the system boundary. The long-term gradual change towards more negative carbon isotope values through the Jurassic-Cretaceous transition has previously been explained by increasingly oligotrophic condition and lessened primary production. However, this contradicts the reported increase in 87 Sr/ 86 Sr ratios suggesting intensification of weathering (and a decreasing contribution of non-radiogenic hydrothermal Sr) and presumably a concomitant rise in nutrient input into the oceans.The concomitant rise of modern phytoplankton groups (dinoflagellates and coccolithophores) would have also led to increased primary productivity, making the negative carbon isotope trend even more notable. We suggest that gradual oceanographic changes, more effective connections and mixing between the Tethys, Atlantic and Pacific Oceans, would have promoted a shift towards enhanced burial of isotopically heavy carbonate carbon and effective recycling of isotopically light organic matter.These processes account for the observed long-term trend, interrupted only by the Weissert event in the Valanginian.

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Section: Accepted M Manuscriptmentioning

confidence: 83%

Carbon cycle history through the Jurassic–Cretaceous boundary: A new global δ13C stack

Price

Főzy

Pálfy

2016

Palaeogeography, Palaeoclimatology, Palaeoecology

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“…43 Ma) (Materials and Methods). The isotopic values, which record fluctuations in the carbon cycle and seawater temperatures, are from well-preserved European belemnite rostra, which lived in tropical Tethyan seas prone to astroclimatic influences (11,17,18) (Fig. 1).…”

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confidence: 99%

“…In the simplest hypothesis, erroneous durations of stages may have distorted the apparent periodicity. For example, the main deviations to the mean periodicity are observed during the Bajocian (i.e., 7.3 My) and the Berriasian-Valanginian (i.e., 11.9 My), whereas new radio-and astrochronological analyses of these intervals report discrepancies of 2-3 My compared with the Geological Time Scale 2012 (GTS 2012) (18,28). The integration of these new data in the future time scale is therefore of prime importance to better constrain the stability of the ∼9-My cycle during the Mesozoic.…”

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confidence: 99%

“…The thresholds of confidence levels were reappraised using Bonferroni corrections, obtained by dividing the P values by the number of positive frequencies explored in the spectral analysis (i.e., 255 frequencies) (54). The nonage randomized time series were submitted to power spectrograms with 20-My window widths to detect temporal changes in the expression of periods (18,55) (Fig. 3H and Fig.…”

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confidence: 99%

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Orbital pacing of carbon fluxes by a ∼9-My eccentricity cycle during the Mesozoic

Martínez

Dera

2015

Proc. Natl. Acad. Sci. U.S.A.

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Eccentricity, obliquity, and precession are cyclic parameters of the Earth's orbit whose climatic implications have been widely demonstrated on recent and short time intervals. Amplitude modulations of these parameters on million-year time scales induce "grand orbital cycles," but the behavior and the paleoenvironmental consequences of these cycles remain debated for the Mesozoic owing to the chaotic diffusion of the solar system in the past. Here, we test for these cycles from the Jurassic to the Early Cretaceous by analyzing new stable isotope datasets reflecting fluctuations in the carbon cycle and seawater temperatures. Our results document a prominent cyclicity of ∼9 My in the carbon cycle paced by changes in the seasonal dynamics of hydrological processes and long-term sea level fluctuations. These paleoenvironmental changes are linked to a great eccentricity cycle consistent with astronomical solutions. The orbital forcing signal was mainly amplified by cumulative sequestration of organic matter in the boreal wetlands under greenhouse conditions. Finally, we show that the ∼9-My cycle faded during the Pliensbachian, which could either reflect major paleoenvironmental disturbances or a chaotic transition affecting this cycle.orbital cycles | carbon cycle | paleoclimate | eustatism | Mesozoic

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“…4). Thus, the Weissert event characterises the early Valanginian, the Faraoni level the late Hauterivian, the oceanic anoxic event OEA1a the early Aptian, and OAE1b, c, and d the Albian (e.g., Erbacher and Thurow 1997;Erba et al 2004;Wissler et al 2003;Martinez et al 2015). However, the Weissert event is not recorded in the early Valanginian Vuache Formation (Pertransiens Zone; Morales et al 2013).…”

Section: Dating Of the Formationsmentioning

confidence: 99%

The Cretaceous of the Swiss Jura Mountains: an improved lithostratigraphic scheme

Strasser

Charollais

Conrad³

et al. 2016

Swiss J Geosci

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Astrochronology of the Valanginian–Hauterivian stages (Early Cretaceous): Chronological relationships between the Paraná–Etendeka large igneous province and the Weissert and the Faraoni events

Cited by 93 publications

References 81 publications

Carbon cycle history through the Jurassic–Cretaceous boundary: A new global δ13C stack

Carbon cycle history through the Jurassic–Cretaceous boundary: A new global δ13C stack

Orbital pacing of carbon fluxes by a ∼9-My eccentricity cycle during the Mesozoic

The Cretaceous of the Swiss Jura Mountains: an improved lithostratigraphic scheme

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