Calcareous nannofossil response to the Weissert episode (Early Cretaceous): Implications for palaeoecological and palaeoceanographic reconstructions

Duchamp‐Alphonse, Stéphanie; Gardin, Silvia; Bartolini, Annachiara

doi:10.1016/j.marmicro.2014.10.002

Cited by 21 publications

(9 citation statements)

References 125 publications

(349 reference statements)

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“…It is noteworthy that fertilization and local carbonate platform decline are observed since the N. neocomiensiformis Zone (Föllmi, 2012;Duchamp-Alphonse et al, 2014). Two minoramplitude fluctuations of δ 13 C are observed in this interval, each having lasted 400 kyr and exactly covering V3 and V4 405-kyr cycles.…”

Section: Environmental Changes Linked To the Volcanic Activitymentioning

confidence: 82%

“…The positive-shift phase is associated to increasing atmospheric pCO 2 (Morales, 2013), higher contents of kaolinite in Tethyan hemipelagic sediments (Fesneau, 2008;Duchamp-Alphonse et al, 2011), an increase in detrital and fluviatile supply (Habib, 1979;Weissert et al, 1998), humid-affinities spore-pollen assemblages (Kujau et al, 2013), higher nannofossil fluxes in pelagic environments Mattioli et al, 2014), evolution from oligotrophic to mesotrophic assemblages (Duchamp-Alphonse et al, 2014;Mattioli et al, 2014), notably characterized by the nannoconid decline (e.g. Barbarin et al, 2012), while the neritic Tethyan and Atlantic carbonate production dramatically decreases (Weissert et al, 1998;Föllmi, 2012).…”

Section: Environmental Changes Linked To the Volcanic Activitymentioning

confidence: 99%

“…Poland (Fesneau, 2008;Duchamp-Alphonse et al, 2011;Morales et al, 2015), a return to more oligotrophic assemblages (Duchamp-Alphonse et al, 2014), characterized by a shortterm recovery of nannoconnids (Barbarin et al, 2012), lower nannofossil fluxes and species richness Mattioli et al, 2014) and a decrease in the pCO 2 values (Gröcke et al, 2005;Morales, 2013). The decrease in the atmospheric pCO 2 values, possibly consecutive to organic-carbon burial can have lowered the level of continental weathering, exports of kaolinite, detrital particles and nutrients, and finally reduced the level of fertilization of oceans.…”

Section: Environmental Changes Linked To the Volcanic Activitymentioning

confidence: 99%

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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

Martínez

Deconinck

Pellenard

et al. 2015

Global and Planetary Change

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Section: Environmental Changes Linked To the Volcanic Activitymentioning

confidence: 82%

Section: Environmental Changes Linked To the Volcanic Activitymentioning

confidence: 99%

Section: Environmental Changes Linked To the Volcanic Activitymentioning

confidence: 99%

See 1 more Smart Citation

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

Deconinck

Pellenard

et al. 2015

Global and Planetary Change

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“…They mark the starting point of major turnovers and crises recorded in marine and terrestrial ecosystems31112131415164344. They allow us to directly establish a connection between an increase in volcanic outgassing and the Valanginian environmental and ecological changes.…”

Section: Discussionmentioning

confidence: 97%

Mercury enrichment indicates volcanic triggering of Valanginian environmental change

Charbonnier

Morales

Duchamp‐Alphonse

et al. 2017

Sci Rep

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The Valanginian stage (Early Cretaceous) includes an episode of significant environmental changes, which are well defined by a positive δ13C excursion. This globally recorded excursion indicates important perturbations in the carbon cycle, which has tentatively been associated with a pulse in volcanic activity and the formation of the Paraná-Etendeka large igneous province (LIP). Uncertainties in existing age models preclude, however, its positive identification as a trigger of Valanginian environmental changes. Here we report that in Valanginian sediments recovered from a drill core in Wąwał (Polish Basin, Poland), and from outcrops in the Breggia Gorge (Lombardian Basin, southern Switzerland), and Orpierre and Angles (Vocontian Basin, SE France), intervals at or near the onset of the positive δ13C excursion are significantly enriched in mercury (Hg). The persistence of the Hg anomaly in Hg/TOC, Hg/phyllosilicate, and Hg/Fe ratios shows that organic-matter scavenging and/or adsorbtion onto clay minerals or hydrous iron oxides only played a limited role. Volcanic outgassing was most probably the primary source of the Hg enrichments, which demonstrate that an important magmatic pulse triggered the Valanginian environmental perturbations.

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“…10) (Lini et al 1992, Martinez et al 2015. The high atmospheric pCO 2 and the greenhouse conditions caused by the ParanaEtendeka volcanism enhanced continental weathering, which, in turn, increased the nutrients delivery from continent into the global oceans (Lini et al 1992, Duchamp-Alphonse et al 2014. Barium and phosphorous are important nutrients necessary to increase and sustain primary productivity (Schoepfer et al in press).…”

Section: Depositional Age Of the Kesima Membermentioning

confidence: 99%

Sedimentology and chemostratigraphy of a Valanginian carbonate succession from the Baja Guajira Basin, northern Colombia

et al. 2016

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ABSTRACT:The Kesima Member of the Palanz Formation constitutes the first record of Cretaceous marine sedimentation along the Baja Guajira Basin, northern Colombia. Sedimentologic and petrographic analyses suggest a deposition along a coral reef dominated rimmed carbonate platform.87 Sr/ 86 Sr values between 0.707350 and 0.707400 suggest a Valanginian (136 -132 Ma) depositional age for the Kesima Member. A positive anomaly on the δ 13 C values of ~2.2‰ suggests that this rimmed carbonate platform registered the Valanginian Weissert oceanic anoxic event. Although the Weissert oceanic anoxic event resulted on a major drowning of the Circum Tethyan carbonate platforms, it seems to have not affected those from the Circum Caribbean, where several shallow marine carbonate platform successions crop out. The Kesima Member displays a change from an organically produced carbonate factory into an inorganically produced, ooids dominated, carbonate factory during the peak of the Weissert event δ 13 C anomaly. This change in the carbonate factory, which may represent a major perturbation of the marine carbonate budget along tropical settings during the Weissert event, coincides with a major decrease in global sea level. Finally, the age of the Kesima Member is considerably older than that of other Cretaceous carbonate successions cropping out in other northern South America sedimentary basins (i.e. Perija-Merida, Cesar-Rancheria). Differences in the timing of the Cretaceous marine incursion along northern South America, together with the differences in the Triassic-Jurassic stratigraphy of several sedimentary basins in northern South America, suggest that the Baja Guajira and Maracaibo basins remained as an isolated tectonic block separated from northern South America after the breakup of Pangea. KEYWORDS:

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Calcareous nannofossil response to the Weissert episode (Early Cretaceous): Implications for palaeoecological and palaeoceanographic reconstructions

Cited by 21 publications

References 125 publications

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

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

Mercury enrichment indicates volcanic triggering of Valanginian environmental change

Sedimentology and chemostratigraphy of a Valanginian carbonate succession from the Baja Guajira Basin, northern Colombia

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