Stratigraphic transition and palaeoenvironmental changes from the Aptian oceanic anoxic event 1a (OAE1a) to the oceanic red bed 1 (ORB1) in the Yenicesihlar section, central Turkey

Hu, Xiumian; Zhao, Kui-Dong; Yılmaz, İsmail Ömer; Li, Yongxiang

doi:10.1016/j.cretres.2012.01.007

Cited by 56 publications

(44 citation statements)

References 51 publications

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“…The δ 13 C profile of the studied core, with the C1–C8 segmentation constrained by strontium‐isotope stratigraphy and biostratigraphy, compares well with other published δ 13 C profiles from the Tethyan and Pacific regions (Figure ) [ Menegatti et al ., ; Jenkyns and Wilson , ; Föllmi et al ., ; Vahrenkamp , ; Kuhnt et al ., ; Hu et al ., ]. Although segment C3, as proposed by Menegatti et al .…”

Section: Discussionsupporting

confidence: 53%

“…Correlation of the δ 18 O profiles across OAE1a from sites in the Neo‐Tethys margin and the Pacific Ocean. (a) Sicily, Italy [ Bellanca et al ., ]; (b) Cismon, Italy [ Erba et al ., ]; (c) Roter Sattel, Switzerland [ Menegatti et al .,]; (d) La Bédoule, France [ Kuhnt et al ., ]; (e) Yenicesihlar, Turkey [ Hu et al ., ]; (f) Bab Basin, UAE [ Vahrenkamp , ]; (g) Bab Basin, UAE [This study]; (h) ODP Site 463, Mid‐Pacific Mountains [ Ando et al ., ]; and (i) Resolution Guyot, Mid‐Pacific Mountains [ Jenkyns and Wilson , ]. A green line in our δ 18 O profiles represents a simple 5 point moving average.…”

Section: Discussionmentioning

confidence: 99%

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Early Aptian paleoenvironmental evolution of the Bab Basin at the southern Neo‐Tethys margin: Response to global carbon‐cycle perturbations across Ocean Anoxic Event 1a

Yamamoto

Ishibashi²,

Takayanagi

et al. 2013

Geochem Geophys Geosyst

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[1] Lower Aptian carbonates in the Bab Basin at the southern Neo-Tethys margin record significant environmental changes across Oceanic Anoxic Event 1a (OAE1a). A long-lasting negative shift of carbon-isotope ratios (d 13 C) associated with a distinct decrease in oxygen-isotope ratios (d 18 O) in orbitolinid-rich carbonates characterizes the onset of OAE1a (Livello Selli), supporting a hypothesis that a long-lasting volcanic CO 2 emission is the main cause of OAE1a, inducing global warming. A bloom of microencrusters (Lithocodium and Bacinella) across the proto-Bab Basin occurred synchronously at the beginning of the subsequent positive d 13 C excursion, responding to the global carbon-cycle perturbations. The carbonates, formed during the OAE1a, show higher strontium-isotope ratios ( 87 Sr/ 86 Sr) compared with those of global seawater; this was likely caused by a local influx of isotopically heavier strontium, along with nutrients, into the proto-Bab Basin. These biotic proliferations were triggered by an increased nutrient supply induced by intensified continental weathering due to the global warming suggested by the increase in d second-order transgression and lasted until the early stage of the highstand after the OAE1a. The Livello Selli corresponds to the early stage of this transgression.

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Section: Discussionsupporting

confidence: 53%

Section: Discussionmentioning

confidence: 99%

Early Aptian paleoenvironmental evolution of the Bab Basin at the southern Neo‐Tethys margin: Response to global carbon‐cycle perturbations across Ocean Anoxic Event 1a

Yamamoto

Ishibashi²,

Takayanagi

et al. 2013

Geochem Geophys Geosyst

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“…Burial of substantial amounts of organic matter in the Southern Ocean and in the South Atlantic over 2.5 m.y. has been postulated to have caused the late Aptian cooling (McAnena et al, 2013); however, organic carbon-rich black shales have not been documented, and well-oxygenated conditions characterized the late Aptian (e.g., Erba et al, 1989;Hu et al, 2012b).…”

Section: Excess Co 2 During Lip Emplacement: Climate Change and Oceanmentioning

confidence: 99%

Environmental consequences of Ontong Java Plateau and Kerguelen Plateau volcanism

Erba¹,

Duncan²,

Bottini³

et al.

The Origin, Evolution, and Environmental Impact of Oceanic Large Igneous Provinces

110

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The mid-Cretaceous was marked by emplacement of large igneous provinces (LIPs) that formed gigantic oceanic plateaus, affecting ecosystems on a global scale, with biota forced to face excess CO 2 resulting in climate and ocean perturbations. Volcanic phases of the Ontong Java Plateau (OJP) and the southern Kerguelen Plateau (SKP) are radiometrically dated and correlate with paleoenvironmental changes, suggesting causal links between LIPs and ecosystem responses. Aptian biocalcifi cation crises and recoveries are broadly coeval with C, Pb, and Os isotopic anomalies, trace metal infl uxes, global anoxia, and climate changes. Early Aptian greenhouse or supergreenhouse conditions were followed by prolonged cooling during the late Aptian, when OJP and SKP developed, respectively. Massive volcanism occurring at equatorial versus high paleolatitudes and submarine versus subaerial settings triggered very different climate responses but similar disruptions in the marine carbonate system. Excess CO 2 arguably induced episodic ocean acidifi cation that was detrimental to

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“…These conditions recurred intermittently through the Lower Cretaceous (e.g., Föllmi 2012;Aguado et al 2013), and regional physiographic factors and/or zonal climatic forcing mechanisms led to sediments in restricted basins that may include short episodes of enhanced OC sequestration with irregularity in duration and intensity in part decoupled from the tempo of major global forcing factors (e.g., Arthur 1979; Kuss and Schlagintweit 1988;Aguado et al 1997;Masse 1998;Masse and Machhour 1998;Bersezio et al 2002;Raisossadat and Shokri 2011;Föllmi et al 2011;Leonide et al 2012;Hu et al 2012;Husinec et al 2012;Roban and Melinte-Dobrinescu 2012;Elkhazri et al 2013). …”

Section: Introductionmentioning

confidence: 99%

Paleoenvironments and Geochemical Signals from the Late Barremian to the Middle Aptian in a Tethyan Marginal Basin, Northeast Spain: Implications for Carbon Sequestration in Restricted Basins

Sanchez-Hernandez¹

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C of ~5‰). However, a low enrichment of redox-sensitive trace elements indicates that the basin did not achieve anoxic conditions. The results also suggest that a shallower-phase of the basin, coeval with platform progradation, may have increased ventilation of the basin at the same time that heightened sedimentation rates and additional input of organic matter from terrestrial sources increased the burial and preservation rate of TOC in the sediment.

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Stratigraphic transition and palaeoenvironmental changes from the Aptian oceanic anoxic event 1a (OAE1a) to the oceanic red bed 1 (ORB1) in the Yenicesihlar section, central Turkey

Cited by 56 publications

References 51 publications

Early Aptian paleoenvironmental evolution of the Bab Basin at the southern Neo‐Tethys margin: Response to global carbon‐cycle perturbations across Ocean Anoxic Event 1a

Early Aptian paleoenvironmental evolution of the Bab Basin at the southern Neo‐Tethys margin: Response to global carbon‐cycle perturbations across Ocean Anoxic Event 1a

Environmental consequences of Ontong Java Plateau and Kerguelen Plateau volcanism

Paleoenvironments and Geochemical Signals from the Late Barremian to the Middle Aptian in a Tethyan Marginal Basin, Northeast Spain: Implications for Carbon Sequestration in Restricted Basins

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