Large environmental disturbances caused by magmatic activity during the Late Devonian Hangenberg Crisis

Pisarzowska, Agnieszka; Rakociński, Michał; Marynowski, Leszek; Marek, Szczerba; Thoby, Marie; Paszkowski, Mariusz; Perri, Maria Cristina; Spalletta, Claudia; Schönlaub, Hans Peter; Kowalik, Nina; Gereke, Manfred

doi:10.1016/j.gloplacha.2020.103155

Cited by 34 publications

(32 citation statements)

References 163 publications

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“…3, Table 1) in the dark shaly-marly 96 ). Hg concentrations based on this study and after 6,97 . The most likely candidate for the observed Hg anomalous contents is arc magmatism.…”

Section: Discussionmentioning

confidence: 81%

“…The Hangenberg Crisis is associated with a transgression pulse, development of anoxic conditions in the sea, and climate warming e.g. [4][5][6]12 . Several possible primary causes of the Hangenberg Crisis have been proposed: climate and glacioeustatic changes; global carbonate crisis resulting from oceanic acidification; salinity changes; phytoplankton blooms and expansion of land plants; volcanism; and extraterrestrial impact (e.g.…”

Section: Discussionmentioning

confidence: 99%

“…Several possible primary causes of the Hangenberg Crisis have been proposed: climate and glacioeustatic changes; global carbonate crisis resulting from oceanic acidification; salinity changes; phytoplankton blooms and expansion of land plants; volcanism; and extraterrestrial impact (e.g. 4,6,45 . There is as yet no clear consensus about the cause of the event, and the primary triggers are still a matter of vigorous debate.…”

Section: Discussionmentioning

confidence: 99%

“…7), such as in Poland 5,6,53 , Germany ( 7,(54)(55)(56), the Iberian Peninsula 57 and China 58 . Recently, convincing evidence of increased volcanic and hydrothermal activity as given by mercury spikes has been detected in the HC interval in Vietnam 10 ; the Czech Republic 11 ; south China 7,11 ; the Holy Cross Mountains, Poland 7 ; Thuringia and Bavaria, Germany 6,7,9 ; and the Carnic Alps in Austria and Italy 6,12 . Menor-Salvan et al 57 described a hydrothermal peak in the Iberian Peninsula, the last phase of which (at ~ 360 Ma) formed the world's largest cinnabar ore reservoir in Almadén.…”

Section: Discussionmentioning

confidence: 99%

“…The lower part of the Hangenberg Crisis interval (sensu 4 ) is characterized by a globally observed δ 13 C negative excursion in the carbonate [59][60][61][62] and organic-matter records 6 . The minima in the carbon isotope curves coincide with Hg enrichment and an Hg/TOC excursion in surprisingly many places around the world in the initial phase of the HC 64 .…”

Section: Discussionmentioning

confidence: 99%

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Mercury spikes as evidence of extended arc-volcanism around the Devonian–Carboniferous boundary in the South Tian Shan (southern Uzbekistan)

Rakociński

Pisarzowska

Corradini

et al. 2021

Sci Rep

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Recently, the end-Devonian mass extinction (Hangenberg Crisis, 359 Ma) was identified as a first-order mass extinction, albeit not one of the “Big Five” events. Many marine and terrestrial organisms were affected by this crisis. The cause of this mass extinction is still conjectural and widely discussed. Here we report anomalously high mercury (Hg) concentrations from the South Tian Shan (Uzbekistan), together with correlation using conodont biostratigraphic data. Hg enrichment (to 5825 ppb) was detected in marine deposits encompassing the Hangenberg Crisis. In the Novchomok section, the Hangenberg Crisis interval does not contain typical Hangenberg Black Shales; however, by means of inorganic geochemistry (enrichment of redox-sensitive elements such as Mo, V, and U) we detected an equivalent level despite the lack of marked facies changes. This is the first record of Hg and Hg/total organic carbon anomalies in marly shales, marls and carbonates that are totally independent of facies changes, implying that volcanism was the most probable cause of the Hangenberg Crisis. This conclusion is confirmed by the presence of a negative δ13C excursion, which may reflect massive release of isotopically light carbon from volcanogenic and thermogenic devolatilization likely combined with increased arc-volcanism activity worldwide at the end of the Devonian.

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“…3, Table 1) in the dark shaly-marly 96 ). Hg concentrations based on this study and after 6,97 . The most likely candidate for the observed Hg anomalous contents is arc magmatism.…”

Section: Discussionmentioning

confidence: 81%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

See 3 more Smart Citations

Mercury spikes as evidence of extended arc-volcanism around the Devonian–Carboniferous boundary in the South Tian Shan (southern Uzbekistan)

Rakociński

Pisarzowska

Corradini

et al. 2021

Sci Rep

Self Cite

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Aquatic quillworts, Isoëtes echinospora and I. lacustris under acidic stress—A review from a temperate refuge

Čtvrtlíková

Kopáček

Nedoma

et al. 2023

Ecology and Evolution

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Effects of redox variability and early diagenesis on marine sedimentary Hg records

Frieling

Mather

März

et al. 2022

Preprint

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Volcanism is a dominant natural source of mercury (Hg) to the atmosphere, biosphere, ocean and sediments. In recent years, sedimentary Hg contents have emerged as a tool to reconstruct volcanic activity, and particularly activity of (subaerially emplaced) large igneous provinces in geological deep time. More specifically, Hg has shown potential as a useful proxy to illuminate the previously elusive impact of such large-scale volcanism on marine and terrestrial paleo-environments. While Hg is now widely applied as volcanism tracer, non-volcanic factors controlling sedimentary Hg content are generally not well constrained. Part of this uncertainty stems from our inability to directly observe a natural unperturbed "steady-state" environment as a baseline, as the modern Hg cycle is heavily influenced by anthropogenic activity. Here we focus on the effects of ambient redox conditions in the water column and shallow sediments (early diagenesis), quantify their influence on the geological Hg record and thereby contribute to constraining their potential impact on the use of Hg as a proxy for deep-time volcanic activity. Constraining these factors is of critical importance for the application of Hg as such a proxy. Many periods in the geological past for which records have been generated, such as the Mesozoic Oceanic Anoxic Events, are marked by a variety of high-amplitude environmental perturbations, including widespread deoxygenation and deposition of organic-rich sediments. We estimate the impact of redox changes and early diagenesis on the geological Hg record using a suite of (sub)recent-Pleistocene and Upper Cretaceous sediments representing oxic to euxinic marine conditions. Our sample set includes a transect through an oxygen minimum zone and cores that record transient shifts in oxygenation state, as well as post-depositional effectsall unrelated to volcanism, to the best of our knowledge. We find substantial alterations to the Hg record and the total organic carbon and total sulfur content, which are typically assumed to be the most common carrier phases of Hg in marine sediments. Moreover, these biases can lead to signal alteration on a par with those interpreted to result from volcanic activity. Geochemical modifications are ubiquitous and their potential magnitude implies that the factors leading to biases in the geological record warrant careful consideration before interpretation. Factors of particular concern to proxy application are (1) the disproportionate loss of organic carbon and sulfur relative to Hg during oxidation that strongly modulates normalized Hg records, (2) the evasion of Hg in anoxic and mildly euxinic sediments and (3) sharp focusing of Hg during post-depositional oxidation of organic matter. We suggest that paired analyses of additional redox-sensitive trace elements such as molybdenum, and organic-matter characteristics, particularly the type of organic matter, could provide first-order constraints on the role that redox and diagenetic changes played in shaping the Hg record as part of ...

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Large environmental disturbances caused by magmatic activity during the Late Devonian Hangenberg Crisis

Cited by 34 publications

References 163 publications

Mercury spikes as evidence of extended arc-volcanism around the Devonian–Carboniferous boundary in the South Tian Shan (southern Uzbekistan)

Mercury spikes as evidence of extended arc-volcanism around the Devonian–Carboniferous boundary in the South Tian Shan (southern Uzbekistan)

Aquatic quillworts, Isoëtes echinospora and I. lacustris under acidic stress—A review from a temperate refuge

Effects of redox variability and early diagenesis on marine sedimentary Hg records

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