Stable carbon-isotope stratigraphy and ammonite biochronology at Madotz, Navarra, northern Spain: implications for the timing and duration of oxygen depletion during OAE-1a

Gaona-Narvaez, Tatiana; Maurrasse, F. J.; Moreno‐Bedmar, Josep Anton

doi:10.1016/j.cretres.2012.06.005

Cited by 18 publications

(9 citation statements)

References 42 publications

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“…The overall trend observed in the new composite δ 13 C record for the BdlC section is in good accordance with existing early Aptian carbon isotope curves and enables identification of the characteristic early Aptian chemostratigraphic segments (Menegatti et al 1998; Millán et al 2009; Kuhnt, Holbourn & Moullade, 2011; Hu et al 2012; Moreno-Bedmar et al 2012; Gaona-Narvaez, Maurrasse & Moreno-Bedmar, 2013). However, uncertainties exist with regard to the position of the negative carbon isotope peak (segment C3) and the exact position of the OAE 1a interval.…”

Section: Discussionsupporting

confidence: 79%

“…In the neritic realm, the time-equivalent deposits are characterized either by a phase of non-deposition or erosion (Wissler, Funk & Weissert, 2003; Föllmi et al 2006) or by the growth of a micro-encrusting microbial and/or algal community (Immenhauser, Hillgärtner & Van Betum, 2005; Bover-Arnal et al 2011; Huck, Heimhofer & Immenhauser, 2012). The carbon isotope pattern across the OAE 1a is characterized by a rapid, negative δ 13 C excursion followed by a long-lasting positive shift and provides a valuable geochemical signature for high-resolution correlation of marine strata (Menegatti et al 1998; Herrle et al 2004; Robinson et al 2008; Millán et al 2009; Vahrenkamp, 2010; Moreno-Bedmar et al 2012; Gaona-Narvaez, Maurrasse & Moreno-Bedmar, 2013; Yamamoto et al 2013).…”

Section: Introductionmentioning

confidence: 99%

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Climatic evolution across oceanic anoxic event 1a derived from terrestrial palynology and clay minerals (Maestrat Basin, Spain)

et al. 2014

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-Studies dealing with the response of the continental biosphere to the environmental perturbations associated with Cretaceous oceanic anoxic events (OAEs) are comparatively rare. Here, a quantitative spore-pollen record combined with clay mineral data is presented, which covers the entire early Aptian OAE 1a interval (Forcall Formation, Maestrat basin, east Spain). The well-expressed OAE 1a carbon-isotope anomaly is paralleled by changes in the clay mineral assemblage and by a stepwise decline in the normalized frequency of Classopollis pollen (produced by xerophytic Cheirolepidiaceae) with lowest contents occurring during the positive δ 13 C shift. In contrast, Araucariacites and Inaperturopollenites pollen show a pronounced increase in relative abundance from low background values to become a significant component of the palynological assemblage during the Classopollis minimum. The observed changes in clay minerals and pollen distribution patterns are interpreted to reflect a major change in the composition of the hinterland vegetation of the Maestrat Basin, most probably due to short-lived but pronounced climatic cooling and changes in humidity. Temperature anomalies driven by organic carbon burial and associated CO 2 decline have been postulated for all major Mesozoic OAEs. The palynomorph record from the Iberian Maestrat basins indicates that the climax of this cooling episode was significantly delayed in comparison to the end of organic carbon-rich deposition in the world oceans.

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Section: Discussionsupporting

confidence: 79%

Section: Introductionmentioning

confidence: 99%

Climatic evolution across oceanic anoxic event 1a derived from terrestrial palynology and clay minerals (Maestrat Basin, Spain)

et al. 2014

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“…[Jenkyns, 1985[Jenkyns, , 2003Caron et al, 1999;Kuhnt et al, 2005;Suan et al, 2008;Gaona-Narvaez et al, 2013;Boulila et al, 2014], or a little bit more for OAE 1a (~1 m.y. [Li et al, 2008]).…”

Section: Occurrence and Duration Of Mesozoic Major And Minor Oaesmentioning

confidence: 99%

The Late Hauterivian Faraoni ‘Oceanic Anoxic Event’: an update

Baudin

Riquier

2014

Bulletin De La Société Géologique De France

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Most oceanic anoxic events (OAEs) took place during the middle part of the Cretaceous and the Late Hauterivian probably recorded the first anoxic event within this peculiar time interval. The so-called Faraoni event (~131 Ma) was initially defined as a short-lived anoxic event restricted to the Mediterranean domain. Since its recognition, numerous geochemical studies were conducted on the Faraoni event and new occurrences of this event were suggested outside the Tethyan domain. This paper presents an update on the Late Hauterivian Faraoni event and examines if this event agrees with the definition of OAEs. Le point sur l'événement anoxique océanique Faraoni de l'Hauterivien supérieur Mots-clés. -Evénements anoxiques, Crétacé, Paléocéanographie, Géochimie sedimentaire Résumé. -La plupart des événements anoxiques océaniques (OAEs) ont eu lieu durant la période moyenne du Crétacé et l'Hauterivien supérieur enregistre potentiellement le premier de ces événements. L'événement Faraoni (~131 Ma) a été initialement défini comme un bref événement anoxique limité au domaine méditerranéen. Depuis sa reconnaissance, de nombreuses études géochimiques ont été menées sur l'événement Faraoni et il aurait été vraisemblablement reconnu dans des bassins hors de la Téthys. Cet article est l'occasion de faire le point sur l'événement Faraoni de l'Hauterivien supérieur et d'examiner s'il correspond bien à la définition des OAEs.

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“…These short-lived episodes lasting ca 1 Ma (Li et al, 2008) are characterized by sediments with an unusually high content of organic carbon and distinct positive and negative shifts in the stable carbon isotope (δ 13 C) record of marine sediments on a global scale (Scholle and Arthur, 1980;Menegatti et al, 1998;Leckie et al, 2002;Herrle et al, 2004). The effects of these pertubations on the global carbon reservoir are expressed by synchronous isotopic shifts which manifest in marine carbonates (δ 13 C carb ; Menegatti et al, 1998;Bellanca et al, 2002;Herrle et al, 2004;Heldt et al, 2008;Godet et al, 2014;Graziano and Raspini, 2018) and organic matter (OM) (δ 13 C org ) from both marine (Menegatti et al, 1998;Dumitrescu and Brassell, 2006;Millán et al, 2009;Gaona-Narvaez et al, 2013a;Sanchez-Hernandez and Maurrasse, 2016) and terrestrial sources (Gröcke et al, 1999;Ando et al, 2002). Thus, the consistency and reproducibility of the carbon isotope shifts in widely distributed locations during OAE 1a provide a robust chronostratigraphic tool for stratigraphic correlation (Scholle and Arthur, 1980;Weissert and Bréhéret, 1991;Menegatti et al, 1998;Herrle et al, 2004).…”

Section: Introductionmentioning

confidence: 99%

Regional palaeoenvironmental influence on organic matter sequestration and characteristics of carbon isotope segment C5 in a hemipelagic sequence, Organyà Basin, northeast Spain

Socorro

Maurrasse

2020

The Depositional Record

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The Cretaceous marine sedimentary record is punctuated by episodes of unusually high rates of organic carbon burial termed oceanic anoxic events. The El Pujal Section archives the response to perturbations of the global carbon cycle associated with Oceanic Anoxic Event 1a in a hemipelagic setting of the Organyà Basin. Here, the aim is to understand the lithological and geochemical responses to changing palaeoenviromental conditions associated with carbon isotope segment C5 of Oceanic Anoxic Event 1a. A multi‐proxy approach is applied to characterize how regional factors influenced the accumulation of organic‐rich sediments during this period of severe oceanic oxygen deficiency. Source specific biomarkers demonstrate that the bulk organic matter derives from in‐situ production, with lesser inputs from allochthonous sources. High‐resolution stable carbon isotope data (δ13Corg) were used to establish the refined details of segment C5. Pulses of fluvial fluxes associated with climate fluctuations supplied variable quantities of terrestrial organic matter with more negative isotopic values, which left their intrinsic signature superimposed on the global δ13Corg signal of segment C5 as minor negative spikes. Primary production sustained by fluvial inputs of biolimiting elements provided abundant labile organic matter conducive to oxygen‐deprived conditions as attested by concomitant peaks in total organic carbon, relatively lower benthic faunal counts, lower bioturbation index, higher concentration of pyrite and enrichments in redox sensitive trace elements. However, organic matter preservation was not chiefly controlled by redox conditions as physical encapsulation by clay minerals probably played a significant role. In addition, coincident inputs of terrestrial organic matter with more inert properties and prone to be bound to clay minerals supplemented the accumulation of organic matter, especially during intervals of enhanced terrigenous fluxes. The combined results underscore how despite sharing common global forcing factors, regional palaeoenvironmental conditions are more important in determining the sedimentary expression of Oceanic Anoxic Event 1a.

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Stable carbon-isotope stratigraphy and ammonite biochronology at Madotz, Navarra, northern Spain: implications for the timing and duration of oxygen depletion during OAE-1a

Cited by 18 publications

References 42 publications

Climatic evolution across oceanic anoxic event 1a derived from terrestrial palynology and clay minerals (Maestrat Basin, Spain)

Climatic evolution across oceanic anoxic event 1a derived from terrestrial palynology and clay minerals (Maestrat Basin, Spain)

The Late Hauterivian Faraoni ‘Oceanic Anoxic Event’: an update

Regional palaeoenvironmental influence on organic matter sequestration and characteristics of carbon isotope segment C5 in a hemipelagic sequence, Organyà Basin, northeast Spain

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