Petrophysical and geochemical signature of the Hangenberg Events: an integrated stratigraphy of the Devonian-Carboniferous boundary interval in the Northern Rhenish Massif (Avalonia, Germany)

Kumpan, Tomáš; Bábek, Ondřej; Kalvoda, Jiří; Grygar, Tomáš Matys; Frýda, J.; Becker, Ralph Thomas; Hartenfels, Sven

doi:10.3140/bull.geosci.1547

Cited by 32 publications

(12 citation statements)

References 48 publications

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“…from descriptions of Korn (1995), Becker (1996), Korn & Weyer (2003), and Becker et al, (2016) that noted increased faunal content and condensation close to its top. Moreover, the interpretation is compatible with the first influx of siliciclastics seen by the Drewer Sandstone in the uppermost Wocklum Limestone in the Drewer section Korn et al, 1994), and by increased Zr/Al values at the top of the Wocklum Limestone in other sections (Kumpan et al, 2015). …”

Section: General Development: the Northern Rim Of The Rhenish Kulm Basinsupporting

confidence: 70%

“…The base of sequence 1 is placed at the base of the Hangenberg Sandstone, which is attributed to the LST (see references in the preceding paragraph, and for further arguments based on petrophysical and geochemical methods in Kumpan et al, 2015). Kaiser et al (2015) estimated a sea-level fall in the scale of more than 100 m. Hence, locally incised valley fills such as the Seiler conglomerate at the northwestern margin of the RKB developed (Koch et al, 1970;Paproth, 1986;Van Steenwinkel, 1993b).…”

Section: General Development: the Northern Rim Of The Rhenish Kulm Basinmentioning

confidence: 99%

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Mississippian (Early Carboniferous) sequence stratigraphy of the Rhenish Kulm Basin, Germany

Herbig¹

2016

Geol. Belg.

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ABSTRACT. The Rhenish Kulm Basin is a deeper-water foreland basin developing in front of the Variscan Orogen in Germany. Three major facies interfinger and might overwhelm the adjacent one in time. These are (1) internal siliciclastic flysch facies, (2) central starved basin facies, and (3) calciturbidite facies. Calciturbidites are derived from the Northwest European shallow-water carbonate platform or not preserved intrabasinal sources. Besides, a deep intrabasinal swell facies is characterized by condensed successions. Diagnostic rock types within each facies enable the recognition of systems tracts of third-order depositional sequences. The interpretation of faunal developments and bioevents support these attributions. Hence, for the first time a sequence stratigraphic subdivision of the Rhenish Kulm Basin into 13 sequences is achieved, ranging from the latest Devonian to the early Namurian. The lower nine sequences are correlated with the Dinantian sequences earlier established on the Belgium shallow-water platform. Two Brigantian sequences 10 and 11 are identified and, despite the prograding Variscan Orogen, the two lower Namurian (Pendleian, Arnsbergian) sequences 12 and 13. The results demonstrate the successful application of sequence stratigraphy in a deeper-water basin, show that sea-level changes overrule the general, more gradual tectonic development of the basin, and prove the Palaeotethyan, if not global isochroneity of Mississippian sequences.

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Section: General Development: the Northern Rim Of The Rhenish Kulm Basinsupporting

confidence: 70%

Section: General Development: the Northern Rim Of The Rhenish Kulm Basinmentioning

confidence: 99%

Mississippian (Early Carboniferous) sequence stratigraphy of the Rhenish Kulm Basin, Germany

Herbig¹

2016

Geol. Belg.

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“…Such oxygendepleted conditions have been documented for the Hangenberg Event in many localities in North America (Exshaw Formation), Europe (Hangenberg Black Shale) and North Africa, while in sections in Siberia, India and the Antarctic, oxic conditions have been recognized (e.g. Becker 1993;House 2002;Kumpan et al 2015;Becker et al 2016).…”

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confidence: 85%

The oldest Gondwanan cephalopod mandibles (Hangenberg Black Shale, Late Devonian) and the mid‐Palaeozoic rise of jaws

et al. 2016

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It is widely accepted that the effects of global sea‐level changes at the transition from the Devonian to the Carboniferous are recorded in deposits on the shelf of northern Gondwana. These latest Devonian strata had been thought to be poor in fossils due to the Hangenberg mass extinction. In the Ma'der (eastern Anti‐Atlas), however, the Hangenberg Black Shale claystones (latest Famennian) are rich in exceptionally preserved fossils displaying the remains of non‐mineralized structures. The diversity in animal species of these strata is, however, low. Remarkably, the organic‐rich claystones have yielded abundant remains of Ammonoidea preserved with their jaws, both in situ and isolated. This is important because previously, the jaws of only one of the main Devonian ammonoid clades had been found (Frasnian Gephuroceratina). Here, we describe four types of jaws of which two could be assigned confidently to the Order Clymeniida and to the Suborder Tornoceratina. These findings imply that chitinous normal‐type jaws were likely to have already been present at the origin of the whole clade Ammonoidea, i.e. in the early Emsian (or earlier). Vertebrate jaws evolved prior to the Early Devonian origin of ammonoids. The temporal succession of evolutionary events suggests that it could have been the indirect positive selection pressure towards strong (and thus preservable) jaws since defensive structures of potential prey animals would otherwise have made them inaccessible to jawless predators in the course of the mid‐Palaeozoic marine revolution. In this respect, our findings reflect the macroecological changes that occurred in the Devonian. [Correction added on 28 July 2016 after first online publication: In the Abstract, the sentence “Vertebrate jaws probably … in the Early Devonian” was amended]

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“…The Hangenberg extinction was accompanied by widespread ocean anoxia and a positive carbon‐isotope excursion of ca 4‰, followed by a sea‐level regression and glaciation (Fig. ; Caplan & Bustin, ; Brand et al ., ; Buggisch & Joachimski, ; Kaiser et al ., ; Cramer et al ., ; Isaacson et al ., ; Kumpan et al ., ; Qie et al ., ; Becker et al ., ; Kaiser et al ., ). This interval is marked globally by a lithostratigraphic succession of the transgressive ‘Hangenberg Black Shale’ overlain by upward‐coarsening siliciclastics deposited during the Hangenberg regression (Kaiser et al ., ).…”

Section: Geological Contextmentioning

confidence: 99%

Authigenic carbonate burial in the Late Devonian–Early Mississippian Bakken Formation (Williston Basin, USA)

2020

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Late Devonian (Famennian) marine successions globally are typified by organic-rich black shales deposited in anoxic and euxinic waters and the cessation of shelf carbonate sedimentation. This global 'carbonate crisis', known as the Hangenberg Event, coincides with a major extinction of reefbuilding metazoans and perturbations to the global carbon cycle, evidenced by positive carbon-isotope excursions of up to 4&. It has been suggested that authigenic carbonate, formed as cements in sedimentary pore spaces during early burial diagenesis, is a significant mass fraction of the total global carbon burial flux, particularly during periods of low oxygen concentration. Because some authigenic carbonate could have originated from remineralization of organic carbon in sediments, it is possible for this reservoir to be isotopically depleted and thereby drive changes in the carbon isotopic composition of seawater. This study presents bulk isotopic and elemental analyses from fine-grained siliciclastics of the Late Devonian-Early Mississippian Bakken Formation (Williston Basin, USA) to assess the volume and isotopic composition of carbonates in these sediments. Carbonate in the Bakken black shales occurs primarily as microscopic disseminated dolomite rhombs and calcite cements that, together, comprise a significant mass-fraction (ca 9%). The elemental composition of the shales is indicative of a dynamic anoxic to sulphidic palaeoenvironment, likely supported by a fluctuating chemocline. Despite forming in an environment favourable to remineralization of organic matter and the precipitation of isotopically depleted authigenic carbonates, the majority of carbon isotope measurements of disseminated carbonate fall between À3& and +3&, with systematically more depleted carbonates in the deeper-water portions of the basin. Thus, although there is evidence for a significant total mass-fraction of carbonate with contribution from remineralized organic matter, Bakken authigenic carbonates suggest that Famennian black shales are unlikely to be sufficiently 13 C-depleted relative to water column dissolved inorganic carbon to serve as a major lever on seawater isotopic composition.

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Petrophysical and geochemical signature of the Hangenberg Events: an integrated stratigraphy of the Devonian-Carboniferous boundary interval in the Northern Rhenish Massif (Avalonia, Germany)

Cited by 32 publications

References 48 publications

Mississippian (Early Carboniferous) sequence stratigraphy of the Rhenish Kulm Basin, Germany

Mississippian (Early Carboniferous) sequence stratigraphy of the Rhenish Kulm Basin, Germany

The oldest Gondwanan cephalopod mandibles (Hangenberg Black Shale, Late Devonian) and the mid‐Palaeozoic rise of jaws

Authigenic carbonate burial in the Late Devonian–Early Mississippian Bakken Formation (Williston Basin, USA)

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