Major and trace element characterization of Oceanic Anoxic Event 1d (OAE 1d): Insight from the Umbria-Marche Basin, central Italy

Gambacorta, Gabriele; Bottini, Cinzia; Brumsack, H.-J.; Schnetger, Bernhard; Erba, Elisabetta

doi:10.1016/j.chemgeo.2020.119834

Cited by 11 publications

(6 citation statements)

References 123 publications

(181 reference statements)

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“…The OAE 1d interval in Hole U1513D is proposed to span from the initial excursion in carbonate δ 13 C values at ∼320 m CSF‐A to ∼300 m CSF‐A where carbonate δ 13 C values start a definitive downward trend (Figure 2). The carbonate δ 13 C excursion and elevated TOC levels observed at Site U1513 are comparable to typical OAE 1d records from the Atlantic/Tethyan basins and surrounding continents (Bornemann et al., 2005, 2017; Gale et al., 2011; Wilson & Norris, 2001; Yao et al., 2021), with the records from the Tethyan Monte Petrano and Le Brecce sections (Gambacorta et al., 2015, 2020) shown for reference (Figure 2). Further, biostratigraphic control including the presence in Hole U1513D, core 26 of Thalmanninella appenninica , a foraminiferal species used for identifying OAE 1d (Table S1 in Supporting Information , Huber et al., 2019), demonstrates chronostratigraphic correlation between the record at Site U1513 and OAE 1d documented elsewhere.…”

Section: Discussionsupporting

confidence: 80%

“…1d records from the Atlantic/Tethyan basins and surrounding continents (Bornemann et al, 2005(Bornemann et al, , 2017Gale et al, 2011;Wilson & Norris, 2001;Yao et al, 2021), with the records from the Tethyan Monte Petrano and Le Brecce sections (Gambacorta et al, 2015(Gambacorta et al, , 2020 shown for reference (Figure 2). Further, biostratigraphic control including the presence in Hole U1513D, core 26 of Thalmanninella appenninica, a foraminiferal species used for identifying OAE 1d (Table S1 in Supporting Information S1, Huber et al, 2019), demonstrates chronostratigraphic correlation between the record at Site U1513 and OAE 1d documented elsewhere.…”

Section: Recognition Of Oae 1dmentioning

confidence: 99%

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First Record of Oceanic Anoxic Event 1d at Southern High Latitudes: Sedimentary and Geochemical Evidence From International Ocean Discovery Program Expedition 369

Fan

MacLeod

et al. 2022

Geophysical Research Letters

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The mid-Cretaceous (90-110 Ma) was a hot greenhouse period characterized by high rates of submarine volcanism including ocean crust production at mid-ocean ridges. This volcanism was accompanied by high concentrations of atmospheric CO 2 , significant sea level rise, and an accelerated hydrological cycle (Foster et al., 2017;Haq, 2014;Jenkyns, 2010;Tierney et al., 2020). CO 2 concentrations reached levels approximately 700-2,000 ppmv (2.5-7 times higher than preindustrial values; Foster et al., 2017 and references therein), and, consistent with high pCO 2 levels, sea surface temperatures have been estimated to have reached ∼30-32°C at 60°S latitude (Bice et al., 2003;Huber et al., 2018), much higher than modern-era temperatures of ∼0-1°C at these latitudes (data from Ocean Data View). Contemporary latitudinal temperature gradients were reduced to <14°C, much smaller than the present difference between tropical polar latitudes of ∼20°C (O'Brien et al., 2017 and references

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Section: Discussionsupporting

confidence: 80%

Section: Recognition Of Oae 1dmentioning

confidence: 99%

First Record of Oceanic Anoxic Event 1d at Southern High Latitudes: Sedimentary and Geochemical Evidence From International Ocean Discovery Program Expedition 369

Fan

MacLeod

et al. 2022

Geophysical Research Letters

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“…In the Marnes Bleues Fm., according to our results, surface-water productivity was low to normal. Incidentally, Gambacorta et al (2020) have the same conclusion for an equivalent of OAE1d, namely, the Pialli Level of the Umbria-Marche Basin (central Italy). This basin also accumulated dark grey to black shales under oxic to suboxic conditions.…”

Section: Regional and Global Controlsmentioning

confidence: 52%

Assessing controls on organic matter enrichments in hemipelagic marls of the Aptian-Lower Albian Blue Marls of the Vocontian Basin (France): an unexpected variability observed from multiple “organic-rich” levels

Caillaud¹,

Quijada²,

Hlohowskyj³

et al. 2022

BSGF - Earth Sci. Bull.

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The Marnes Bleues Formation from the Vocontian Basin (Southeastern France) shows many organic rich levels, some concomitant to oceanic anoxic events OAE1a and OAE1b. These organic-rich levels are scattered through a thick homogeneous succession of marls, poor in organic matter (OM). Through a multi-parameter approach, the organic-rich levels from the Aptian-Albian were characterized. Our results show that all OM-rich levels exhibit variable characteristics, such as OM nature (marine vs. continental), sedimentation and accumulation rates, redox conditions, surface-water productivity and relative sea level, but they all show low to modest enrichments in OM. Furthermore, all the levels share in common the fact that they formed under conditions of normal to low productivity and oxic to suboxic conditions. Thus, our results strongly suggest that, in the absence of high productivity and anoxic bottom conditions, the other factors reputed to favor OM accumulation only led to sporadic and low enrichments in organic contents. It is as if such factors could only enhance OM accumulation but could not induce it alone. What was true for the Vocontian Basin may be extended to other settings, regardless of their time of deposition or location.

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“…To varying degrees, trace metals and metalloids such as V, Co, As and Ni, exhibit a reasonable covariance with Mn concentrations. Specifically, the reduction of vanadate to vanadyl ions (VO 2-) as well as hydroxyl forms, occur in mildly reducing and non-sulfidic anoxic waters (Algeo and Maynard, 2004;Calvert and Pedersen, 1993;Morford and Emerson 1999;Tribovillard et al, 2006;Gambacorta et al, 2020). Additionally, V 3+ phases are further reduced to insoluble hydroxide forms under strongly reducing conditions when free H2S is present in the euxinic environment (Tribovillard et al, 2006;Takahashi et al, 2014;Zhang et al, 2019).…”

Section: Origin and Paleoredox Depositional Conditions Of The Mn-bear...mentioning

confidence: 99%

Paleoproterozoic manganese oxide precipitation in oxic seawater surface and reductive enrichment in anoxic seafloor

et al. 2022

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Major and trace element characterization of Oceanic Anoxic Event 1d (OAE 1d): Insight from the Umbria-Marche Basin, central Italy

Cited by 11 publications

References 123 publications

First Record of Oceanic Anoxic Event 1d at Southern High Latitudes: Sedimentary and Geochemical Evidence From International Ocean Discovery Program Expedition 369

First Record of Oceanic Anoxic Event 1d at Southern High Latitudes: Sedimentary and Geochemical Evidence From International Ocean Discovery Program Expedition 369

Assessing controls on organic matter enrichments in hemipelagic marls of the Aptian-Lower Albian Blue Marls of the Vocontian Basin (France): an unexpected variability observed from multiple “organic-rich” levels

Paleoproterozoic manganese oxide precipitation in oxic seawater surface and reductive enrichment in anoxic seafloor

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