Multi-proxy record of the Austrian Upper Triassic Polzberg Konservat-Lagerstatte in light of the Carnian Pluvial Episode

被引:2
作者
Lukeneder, Alexander [1 ]
Lukeneder, Petra [2 ]
Sachsenhofer, Reinhard F. [3 ]
Roghi, Guido [4 ]
Rigo, Manuel [4 ,5 ]
机构
[1] Nat Hist Museum Vienna, Geol Paleontol Dept, Burgring 7, A-1010 Vienna, Austria
[2] Univ Vienna, Vienna Doctoral Sch Ecol & Evolut, Djerassipl 1, A-1030 Vienna, Austria
[3] Montan Univ, Dept Appl Geosci & Geophys, A-8700 Leoben, Austria
[4] Natl Res Council CNR, Inst Geosci & Earth Resources, IG, Via G Gradenigo 6, I-35131 Padua, Italy
[5] Univ Padua, Dept Geosci, Via G Gradenigo 6, I-35131 Padua, Italy
关键词
PALYNOLOGICAL INVESTIGATIONS; CALCAREOUS ALPS; SOURCE ROCKS; CRISIS; HYDROCARBONS; MATURITY; INDICATORS; DOLOMITES; ANOXIA; EVENT;
D O I
10.1038/s41598-024-60591-9
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
We present a multi-proxy investigation of a lower Carnian basinal succession from Polzberg in the Northern Calcareous Alps (Lower Austria). A section comprising a unique Konservat-Lagerstatte was studied based on bio- and chemostratigraphy along with geophysical methods, yielding a detailed and robust stratigraphic calibration of the Polzberg succession. The Polzberg section revealed the paleoceanographic history and helped to identify a global climatic reversal, the Carnian Pluvial Episode. The age of the Upper Triassic Reingraben formation in the Northern Calcareous Alps is refined as the Austrotrachyceras austriacum Zone within the lower Carnian (Julian 2). Ammonoids and conodonts provide a detailed biostratigraphic subdivision that serves as a basis for analyses of the faunal distribution and the paleoenvironmental evolution of the Upper Triassic Reifling Basin. The succession includes lithological and facies changes similar to those of coeval units in the Tethys. The Carnian was characterized by a weak (similar to 1 parts per thousand) positive delta C-13 trend, punctuated by a negative shift during the lower Carnian corresponding to the initiation of the Carnian Pluvial Episode, a period representing the onset of early/late Carnian transitional global greenhouse conditions. Organic maturity parameters and the conodont alteration index (CAI) show that the thermal overprint of the Polzberg section is low. Biomarker proxies suggest that the organic matter of the uppermost Gostling formation is a mixture of marine and terrestrial material deposited in a dysoxic environment. Within the overlaying Reingraben formation, the amount of marine biomass decreased gradually upwards. Oxygen-depleted conditions, probably due to water-column stratification, continued during deposition of the Reingraben formation. Bacterial sulfate reduction played a major role in organic matter degradation.
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相关论文
共 77 条
[41]   Comment on "Triassic coleoid beaks and other structures from the Calcareous Alps revisited" by Doguzhaeva et al. (2022) [J].
Lukeneder, Petra ;
Lukeneder, Alexander .
ACTA PALAEONTOLOGICA POLONICA, 2022, 67 (04) :963-965
[42]   Mineralized belemnoid cephalic cartilage from the late Triassic Polzberg Konservat-Lagerstatte (Austria) [J].
Lukeneder, Petra ;
Lukeneder, Alexander .
PLOS ONE, 2022, 17 (04)
[43]   A delayed carbonate factory breakdown during the Tethyan-wide Carnian Pluvial Episode along the Cimmerian terranes (Taurus, Turkey) [J].
Lukeneder, Susanne ;
Lukeneder, Alexander ;
Harzhauser, Mathias ;
Islamoglu, Yesim ;
Krystyn, Leopold ;
Lein, Richard .
FACIES, 2012, 58 (02) :279-296
[44]   Astronomical age constraints and extinction mechanisms of the Late Triassic Carnian crisis [J].
Miller, Charlotte S. ;
Peterse, Francien ;
da Silva, Anne-Christine ;
Baranyi, Viktoria ;
Reichart, Gert J. ;
Kurschner, Wolfram M. .
SCIENTIFIC REPORTS, 2017, 7
[45]   Biogeochemical evidence for dinoflagellate ancestors in the Early Cambrian [J].
Moldowan, JM ;
Talyzina, NM .
SCIENCE, 1998, 281 (5380) :1168-1170
[46]   Climate variability during the Carnian Pluvial Phase - A quantitative palynological study of the Carnian sedimentary succession at Lunz am See, Northern Calcareous Alps, Austria [J].
Mueller, Steven ;
Krystyn, Leopold ;
Kurschner, Wolfram M. .
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY, 2016, 441 :198-211
[47]  
Muller G., 1971, NEUES JB F R MINERAL, V10, P466
[48]   IDENTIFICATION OF SOME DITERPENOID HYDROCARBONS IN PETROLEUM [J].
NOBLE, RA ;
ALEXANDER, R ;
KAGI, RI .
ORGANIC GEOCHEMISTRY, 1986, 10 (4-6) :825-829
[49]   Weathering and sea level control on siliciclastic deposition during the Carnian Pluvial Episode (Southern Alps, Italy) [J].
Pecorari, Matteo ;
Caggiati, Marcello ;
Dal Corso, Jacopo ;
Cruciani, Giuseppe ;
Tateo, Fabio ;
Chu, Daoliang ;
Gianolla, Piero .
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY, 2023, 617
[50]   EFFECTS OF SOURCE, THERMAL MATURITY, AND BIODEGRADATION ON THE DISTRIBUTION AND ISOMERIZATION OF HOMOHOPANES IN PETROLEUM [J].
PETERS, KE ;
MOLDOWAN, JM .
ORGANIC GEOCHEMISTRY, 1991, 17 (01) :47-61