Tempo of the end-Permian event: High-resolution cyclostratigraphy at the Permian-Triassic boundary

Rampino, Michael R.; Prokoph, Andreas; Adler, André

doi:10.1130/0091-7613(2000)028<0643:totepe>2.3.co;2

Cited by 35 publications

(32 citation statements)

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“…Accordingly, the Buntsandstein cyclostratigraphy is used here to tentatively calibrate the marine stages and substages, implying duration of about 1.5 Ma for the Induan with the Griesbachian probably spanning some 0.9 Ma, and the Dienerian lasting ∼0.6 Ma what is in agreement with data obtained by Ovtcharova et al (2006). Furthermore, this is almost consistent with duration of ∼1.4 to 1.6 Ma obtained from time-series analysis of the lower Werfen Formation (Tesero Oolite to Seis Member) from the Southern Alps (Rampino et al, 2000), which according to biomagnetostratigraphic correlation is nearly equivalent to the Lower Buntsandstein (Fig. 10).…”

Section: Calibration Of the Early Triassic Stages And Substagessupporting

confidence: 86%

Latest Permian to Middle Triassic cyclo-magnetostratigraphy from the Central European Basin, Germany: Implications for the geomagnetic polarity timescale

Szurlies¹

2007

Earth and Planetary Science Letters

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In Central Germany, the about 1 km thick mainly clastic Germanic Lower Triassic (Buntsandstein) consists of about 60 sedimentary cycles, which are considered to reflect variability in precipitation within the epicontinental Central European Basin, most probably due to solar-induced short eccentricity cycles. They provide a high-resolution cyclostratigraphic framework that constitutes the base for creating a composite geomagnetic polarity record, in which this paper presents a Middle Buntsandstein to lowermost Muschelkalk magnetostratigraphy obtained from 6 outcrops and 2 wells where a total of 471 samples was collected. Combined with recently established records, a well-documented magnetostratigraphy for the upper Zechstein to lowermost Muschelkalk (latest Permian to Middle Triassic) of Central Germany has been constructed, encompassing an overall stratigraphic thickness of about 1.3 km and 22 magnetozones derived from about 2050 paleomagnetic samples. Along with available biostratigraphy, this multi-disciplinary study facilitates detailed links to the marine realm, in order to directly refer biostratigraphically calibrated Triassic stage boundaries as well as radioisotopic ages to the Buntsandstein cyclostratigraphy and, conversely, to contribute to calibrating the geologic timescale.

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Section: Calibration Of the Early Triassic Stages And Substagessupporting

confidence: 86%

Latest Permian to Middle Triassic cyclo-magnetostratigraphy from the Central European Basin, Germany: Implications for the geomagnetic polarity timescale

Szurlies¹

2007

Earth and Planetary Science Letters

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“…In agreement with Shen et al (3), Jin et al (26), and Wang et al (27), we define the onset of extinction at the base of bed 25 and the end of the main extinction interval at bed 28. In other sections with higher accumulation rates such as Penglaitan (China) (3) and Gartnerkofel core (Swiss Alps) (28,29), the extinction appears more abrupt; thus, our duration estimate between bed 25 and bed 28 at Meishan of 61 ± 48 ka is a maximum (Table 1, Fig. 1, and Fig.…”

Section: New Age Modelmentioning

confidence: 97%

High-precision timeline for Earth’s most severe extinction

Burgess

Bowring

Shen

2014

Proc. Natl. Acad. Sci. U.S.A.

600

479

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Significance Mass extinctions are major drivers of macroevolutionary change and mark fundamental transitions in the history of life, yet the feedbacks between environmental perturbation and biological response, which occur on submillennial timescales, are poorly understood. We present a high-precision age model for the end-Permian mass extinction, which was the most severe loss of marine and terrestrial biota in the last 542 My, that allows exploration of the sequence of events at millennial to decamillenial timescales 252 Mya. This record is critical for a better understanding of the punctuated nature and duration of the extinction, the reorganization of the carbon cycle, and a refined evaluation of potential trigger and kill mechanisms.

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“…2 combines this analysis with the analogous carbon isotopic signal in the Gartnerkofel-I core drilled in the Carnic Alps, Austria (3,4). Cyclostratigraphic analysis of the Gartnerkofel core indicates that the sediment accumulation rate over the corresponding interval is approximately constant (22). When the accumulation rate is set to 22.5 cm/Kyr, approximately within a factor of 2 of the earlier estimate (22), reconstructions of MðtÞ for Gartnerkofel are qualitatively similar to that for Meishan.…”

Section: Significancementioning

confidence: 61%

Methanogenic burst in the end-Permian carbon cycle

Rothman

Fournier

French

et al. 2014

Proc. Natl. Acad. Sci. U.S.A.

139

110

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The end-Permian extinction is associated with a mysterious disruption to Earth's carbon cycle. Here we identify causal mechanisms via three observations. First, we show that geochemical signals indicate superexponential growth of the marine inorganic carbon reservoir, coincident with the extinction and consistent with the expansion of a new microbial metabolic pathway. Second, we show that the efficient acetoclastic pathway in Methanosarcina emerged at a time statistically indistinguishable from the extinction. Finally, we show that nickel concentrations in South China sediments increased sharply at the extinction, probably as a consequence of massive Siberian volcanism, enabling a methanogenic expansion by removal of nickel limitation. Collectively, these results are consistent with the instigation of Earth's greatest mass extinction by a specific microbial innovation. methanogenesis | horizontal gene transfer | microbial evolution |

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Tempo of the end-Permian event: High-resolution cyclostratigraphy at the Permian-Triassic boundary

Cited by 35 publications

References 0 publications

Latest Permian to Middle Triassic cyclo-magnetostratigraphy from the Central European Basin, Germany: Implications for the geomagnetic polarity timescale

Latest Permian to Middle Triassic cyclo-magnetostratigraphy from the Central European Basin, Germany: Implications for the geomagnetic polarity timescale

High-precision timeline for Earth’s most severe extinction

Methanogenic burst in the end-Permian carbon cycle

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