Biotic and environmental changes in the Permian–Triassic boundary interval recorded on a western Tethyan ramp in the Bükk Mountains, Hungary

Haas, János; Demény, Attila; Hips, Kinga; Zajzon, Norbert; Weiszburg, Tamás G.; Sudar, Milan; Pálfy, József

doi:10.1016/j.gloplacha.2006.06.010

Cited by 54 publications

(48 citation statements)

References 44 publications

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“…Therefore we supposed that the variation of the carbonate and organic carbon isotope was in lock-step during the P-Tr transition. This conclusion is supported by the data from other sections (Haas et al 2007;Payne et al 2004). …”

Section: Discussionsupporting

confidence: 82%

“…Understanding the pattern, mechanism and duration of this mass extinction are still ongoing subjects of debates (Fang 2004a, b;Jiang et al 2007b;Jin et al 2000;Kozur 1998; Wang and Cao 2004;Wignall and Hallam 1993a;Wu and Liu 1991;Xie et al 2005;Yin et al 2007a;Yin and Tong 1998). As a useful tool in reflecting the perturbation of environments, the carbon isotopes of this time interval, including organic and carbonate carbon isotope compositions, have been investigated in detail (Baud et al 1989;Cao et al 2002;Haas et al 2007; Korte et al 2004;Magaritz et al 1988Magaritz et al , 1992Payne et al 2004;Riccardi et al 2007;Schonlaub 1991;Xie et al 2007b;Xu and Yan 1993;Zhang et al 2006). Distinct negative excursion of carbon isotope compositions has been recognized worldwide at the P-Tr transition but both its excursion pattern and origin are still controversial, e.g., whether the excursion pattern was mono-episodic (Cao et al 2002;Jin et al 2000) or multiepisodic (Baud et al 1989;Haas et al 2007;Korte et al 2004;Payne et al 2004;Xie et al 2007a;Zhang et al 2006).…”

Section: Introductionmentioning

confidence: 99%

“…As a useful tool in reflecting the perturbation of environments, the carbon isotopes of this time interval, including organic and carbonate carbon isotope compositions, have been investigated in detail (Baud et al 1989;Cao et al 2002;Haas et al 2007; Korte et al 2004;Magaritz et al 1988Magaritz et al , 1992Payne et al 2004;Riccardi et al 2007;Schonlaub 1991;Xie et al 2007b;Xu and Yan 1993;Zhang et al 2006). Distinct negative excursion of carbon isotope compositions has been recognized worldwide at the P-Tr transition but both its excursion pattern and origin are still controversial, e.g., whether the excursion pattern was mono-episodic (Cao et al 2002;Jin et al 2000) or multiepisodic (Baud et al 1989;Haas et al 2007;Korte et al 2004;Payne et al 2004;Xie et al 2007a;Zhang et al 2006). There have been several hypotheses proposed to explain the negative excursion of the carbon isotopes and its relationship with the causes of the extinction.…”

Section: Introductionmentioning

confidence: 99%

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Relationships between carbon isotope evolution and variation of microbes during the Permian–Triassic transition at Meishan Section, South China

Luo

Huang

Xie

et al. 2009

Int J Earth Sci (Geol Rundsch)

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This paper investigates kerogen carbon isotopes, the difference between carbonate and kerogen carbon isotopes (D 13 C carb-kero = d 13 C carb -d 13 C kero ) and the difference between carbonate and n-C 19 alkane compound-specific carbon isotopes (D 13 C carb-n-C19 = d 13 C carb -d 13 C n-C19 ) during the Permian-Triassic transition at Meishan, South China. The results show that kerogen carbon isotopes underwent both gradual and sharp shifts in beds 23-25 and 26-29, respectively. The differences between carbonate and organic carbon isotopes, both the D 13 C carb-kero and D 13 C carb-n-C19 , which are mainly affected by CO 2 -fixing enzyme and pCO 2 , oscillated frequently during the Permian-Triassic transition. Both the variations of D 13 C carb-n-C19 and D 13 C carb-kero coupled with the alternation between cyanobacteria and green sulfur bacteria indicated by biomarkers. The episodic low values of D 13 C carb-n-C19 corresponded to episodic blooms of green sulfur bacteria, while the episodic high values of D 13 C carb-n-C19 corresponded to episodic blooms of cyanobacteria. The relationships between the variation of carbon isotopes and biota show that the microbes which flourished after the extinction of macroorganism affected the carbon isotope fractionation greatly. Combining the carbon isotope compositions and the pattern of size variation of the conodont Neogondolella, this paper supposes that anoxia of the photic zone at bed 24 was episodic and it would be caused by the degradation of terrigenous organic matters by sulfate reducing bacteria in the upper water column. Considered together with results from previous research, the high resolution variation of the biogeochemistry presents the sequence of the important geo-events during the PermianTriassic crisis.

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Section: Discussionsupporting

confidence: 82%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Relationships between carbon isotope evolution and variation of microbes during the Permian–Triassic transition at Meishan Section, South China

Luo

Huang

Xie

et al. 2009

Int J Earth Sci (Geol Rundsch)

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“…The low est Tri as sic strata from the dif fer ent Permian-Tri as sic sec tions of the world (e.g., AltÏner et al, 2005;Groves et al, , 2007Shen et al, 2006;Haas et al, 2007) are char ac ter ized by mainly dolomitic lime stone, recrystallised lime stone with nu mer ous tiny foraminifers and reg u lar and pla nar milli metre-scale lami na tions with abun dant py rite crys tals as in the ÇaÈlayÏk sec tion (Fig. 7).…”

Section: Discussionmentioning

confidence: 99%

Discovery of an earliest Triassic, post-extinction foraminiferal assemblage above the Permian-Triassic boundary, Strandzha nappes, northwest Turkey.

Okuyucu¹,

Ivanova²,

Bedi³

et al. 2014

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“…In Hungary, it is best recorded in the Bálvány North section (Haas et al 2007). As part of a multidisciplinary research project, we carried out a detailed provenance study and complex mineralogical investigation of the Bálvány North boundary section, where we also attempted to find tuff layers for possible radiometric age determinations.…”

Section: Introductionmentioning

confidence: 99%

Multiple provenance of detrital zircons from the Permian–Triassic boundary in the Bükk Mts., Hungary

Zajzon

Szabó²,

Weiszburg

et al. 2009

Int J Earth Sci (Geol Rundsch)

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Detailed zircon analyses were carried out on samples from the Bálvány North section, which contains the Permian-Triassic boundary. A fine-grained sandstone bed within the ''boundary shale'' contains a significant amount of zircon crystals. Pupin morphological, scanning electron microscopy [secondary electron, back-scattered electron, cathodoluminescence (CL)] and laser ablation inductively coupled mass spectrometry (LA-ICP-MS) investigations were done in selected single grains to combine morphological information with radiometric ages, and infer the provenance of zircons. Three populations are distinguished on the basis of Pupin morphology. Their centres of gravity are S17, S2 and P1. The LA-ICP-MS radiometric ages reveal three main age groups and a smaller one, apart from a few scattered old ages. The largest group, comprising ca. 50% of the measured grains, has an age of 470-440 Ma. The two other main groups, which together represent ca. 25% of the measured grains, are around 280 and 600 Ma. The 280 Ma group contains slightly more grains than the 600 Ma group. A small group has an age of 370-340 Ma. In addition, there are some older grains with ages of 850, 969, 1,050 and 2,150 Ma. Based on the zircon morphology no clear separation of the different age groups could be made. Both the 280 Ma and the 470-440 Ma age groups tend to show zircon crystals derived from three types of sources: crustal granites, calcalkaline granitoids and alkali granites and/or their volcanic equivalents. Zircons in the 450 Ma group have a magmatic rim around their altered, relict core, as revealed by CL images. Post-magmatic processes also affected the rim. The age of the core is possibly reset during the formation of the magmatic rim. This suggestion is supported by the LA-ICP-MS data, because no difference was seen between the core and the rim. The different roundness of the zircons, the well-sorted crystals and the at least five different source rocks indicate previous concentration of the grains, before their transportation into the ''boundary shale''. Austroalpine and Southern Alpine rocks could be the sources of the zircon crystals, which fit well into the paleogeographical model of the area, which suggests that the Bükk Mts. was located in the foreground of the Alpine units.

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Biotic and environmental changes in the Permian–Triassic boundary interval recorded on a western Tethyan ramp in the Bükk Mountains, Hungary

Cited by 54 publications

References 44 publications

Relationships between carbon isotope evolution and variation of microbes during the Permian–Triassic transition at Meishan Section, South China

Relationships between carbon isotope evolution and variation of microbes during the Permian–Triassic transition at Meishan Section, South China

Discovery of an earliest Triassic, post-extinction foraminiferal assemblage above the Permian-Triassic boundary, Strandzha nappes, northwest Turkey.

Multiple provenance of detrital zircons from the Permian–Triassic boundary in the Bükk Mts., Hungary

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