Sedimentary organic matter characterization of the Triassic–Jurassic boundary GSSP at Kuhjoch (Austria)

Ruhl, Micha; Veld, Harry; Kürschner, Wolfram M.

doi:10.1016/j.epsl.2009.12.046

Cited by 42 publications

(27 citation statements)

References 58 publications

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“…At Kuhjoch, a high abundance of prasinophycean algae, initially Cymatiosphaera polypartita followed by Tasmanites spp., that coincides with the upper part of the Marshi CIE and continues during the less depleted C-isotope interval in the Schattwald beds (Bonis et al, 2009). This was interpreted as reflecting nutrient rich surface waters of low salinity and was found to occur in sections all over the Eiberg Basin (Ruhl et al, 2010a). A similar increase in abundance of the same taxon was recorded immediately above the Marshi CIE in the Westbury Formation at St. Audrie's Bay .…”

supporting

confidence: 54%

“…The new correlation presented herein also has consequences for the interpretation of prasinophyte acmes recorded in several TJB successions (van de Schootbrugge et al, 2007;Kürschner et al, 2007;Götz et al, 2009;Bonis et al, 2009;Ruhl et al, 2010a;Ibarra et al, 2016). It is clear from the palynostratigraphic records of these localities that there are several episodes of prasinophyte acmes throughout the Rhaetian and Early Jurassic.…”

mentioning

confidence: 62%

“…2). The lower half of this CIE exhibits high hydrogen index values and correlates with increased abundances of Classopollis meyerianus, while in its upper half the hydrogen index values are low and the palynological assemblages are instead dominated by high abundances of the prasinophycean alga Cymatiosphaera (Ruhl et al, 2010a).…”

Section: Kuhjochmentioning

confidence: 99%

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A new correlation of Triassic–Jurassic boundary successions in NW Europe, Nevada and Peru, and the Central Atlantic Magmatic Province: A time-line for the end-Triassic mass extinction

Lindström

Schootbrugge

Hansen

et al. 2017

Palaeogeography, Palaeoclimatology, Palaeoecology

112

107

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Understanding the end-Triassic mass extinction event (201.36 Ma) requires a clear insight into the stratigraphy of boundary sections, which allows for long-distance correlations and correct distinction of the sequence of events. However, even after the ratification of a Global Stratotype Section and Point, global correlations of TJB successions are hampered by the fact that many of the traditionally used fossil groups were severely affected by the crisis. Here, a new correlation of key TJB successions in Europe, U.S.A. and Peru, based on a combination of biotic (palynology and ammonites), geochemical (δ 13 C org ) and radiometric (U/Pb ages) constraints, is presented. This new correlation has an impact on the causality and temporal development during the end-Triassic event. It challenges the hitherto used standard correlation, which has formed the basis for a hypothesis that the extinction was caused by more or less instantaneous release of large quantities of light carbon (methane) to the atmosphere, with catastrophic global warming as a consequence. The new correlation instead advocates a more prolonged scenario with a series of feedback mechanisms, as it indicates that the bulk of the hitherto dated, high-titanium, quartz normalized volcanism of the Central Atlantic Magmatic Province (CAMP) preceded or was contemporaneous to the onset of the mass extinction. In addition, the maximum phase of the mass extinction, which affected both the terrestrial and marine ecosystems, was associated with a major regression and repeated, enhanced earthquake activity in Europe. A subsequent transgression resulted in the formation of hiati or condensed successions in many areas in Europe. Later phases of volcanic activity of the CAMP, producing low titanium, quartz normalized and high-iron, quartz normalized basaltic rocks, continued close to the first occurrence of Jurassic ammonites and the defined TJB. During this time the terrestrial ecosystem had begun to recover, but the marine ecosystem remained disturbed.

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confidence: 54%

mentioning

confidence: 62%

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A new correlation of Triassic–Jurassic boundary successions in NW Europe, Nevada and Peru, and the Central Atlantic Magmatic Province: A time-line for the end-Triassic mass extinction

Lindström

Schootbrugge

Hansen

et al. 2017

Palaeogeography, Palaeoclimatology, Palaeoecology

112

107

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“…Tem per a ture, pre cip i ta tion, and the dy nam ics of the at mosphere, and also the in ten sity of weath er ing pro cesses at the Earth´s sur face were af fected by fluc tu a tions in CO 2 con cen tration (Hesselbo et al, 2002;Ruhl et al, 2010Ruhl et al, , 2011. Clay-rich sequences with a high kaolinite con tent in south ern Swe den and Po land doc u ment the for ma tion of ex ten sive Up per Tri assic/Lower Ju ras sic weath er ing pro files and palaeosols on granitoids (Kraus, 1989;Ahlberg et al, 2003;OErodoñ et al, 2006).…”

Section: Introductionmentioning

confidence: 99%

Latest Triassic climate humidification and kaolinite formation (Western Carpathians, Tatric Unit of the Tatra Mts)

Lintnerová¹,

Michalı́k²,

Uhlík³

et al. 2013

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The Tomanová For ma tion, of Rhaetian age, over ly ing the Norian Carpathian Keuper in the Tatra Mts. is built of cy clic parasequences of mudstones and sand stones. Quartz (15 to 70 wt.%), kaolinite (13 to 46 wt.%) and 2:1 Al dioctahedral phyllosilicates (dioct 2:1: mus co vite, illite, illite/smectite: 5 to 39 wt.%) rep re sent the ma jor min eral phase. The kaolinite/dioct 2:1 ra tio de creases up wards in the sec tion (from 4.3 to 0.5) and sig nals vari abil ity in weath er ing/ero sion in ten sity and changing wa ter sa lin ity. Ma jor and trace el e ments (LILE, HSFS, REE) in di cate a uni form source -fel sic rocks lo cated prob a bly in the Vindelician High lands. The sed i men ta tion rate (83 mm/ky) was con trolled by cli mate. Al ter na tion of dry and hu mid pe riods is refered by sed i men tary tex tures and by ma tu rity of quartz (ae olian vs. flu vial grains), and or ganic mat ter con tent and com po si tion (C org and d 13 C org ). Authigenic sid er ite or bethierine doc u ments wet and re duced con di tions in the up per part of the Tomanová For ma tion. The sedimention rate of the ma rine Dudzinec For ma tion at tained 25 mm/ka and the char ac ter of cy cles pre served in the se quence is sim i lar as that of the Tomanová For ma tion (fin ing up wards parasequences). How ever, the dif fer ent clay min er al ogy, the re cy cled char ac ter of the sil i cates, the dif fer ent d 13 C org and el e vated imput of car bon ate detri tus with spe cific C and O iso to pic pat terns doc u ment a dis con ti nu ity in the sec tion. The transgressive char ac ter of the Dudzinec Fm. was de duced from the strati graphic dis tri bu tion and en vi ron men tal char ac ter is tics of the ben thic foraminifera pres ent. Involutinids and spirillinids dom i nate in the lower part, endothyrinids gov ern the mid dle part, and in the up per part nodosariids and Ammodiscus-type micro fauna oc cur. These age-di ag nos tic microfossils in di cate a late Rhaetian age. Sea level rise in the Tatric Zone trig gered by ther mal ex pan sion of the Cen tral At lan tic Rift was grad ual, be ing af fected by in put of ter res trial clastic sed i ment both by fresh wa ter and by wind. The Tatric Tri as sic se quence in the West ern Carpathians helps un der stand ing of the de vel op ment of sed i men ta tion, palaeoclimate (kaolinite weath er ing), and palaeo ge ogra phy of the north ern most Tethyan Do main.

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“…Slatnik and Mt. Kobla sections is also responsible for a less clearly expressed thickening and coarsening up- ruhl et al 2010;^rne et al 2011;Greene et al, 2012;MartinDale et al, 2012). Alternatively, this facies shift could be due to the beginning of a new transgressive cycle (see Roži~ et al, 2009).…”

Section: Correlation and Comparison With Mt Slatnik And Mt Kobla Sementioning

confidence: 99%

Extent of the Upper Norian – Rhaetian Slatnik Formation in the Tolmin Nappe, eastern Southern Alps

Rožič¹,

Gale²,

Kolar‐Jurkovšek³

2013

Geologija

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In the Norian and Rhaetian the area of present-day Slovenia was divided into the Julian Carbonate Platform on in present north, the Dinaric Carbonate Platform in the present south and the intermediate Slovenian Basin. Main Dolomite or the Dachstein Limestone were deposited, on the platforms whereas the basin was characterized by the Ba~a Dolomite. The Upper Norian-Rhaetian succession was recently recognized in the northern part of the basin. It was studied in two sections and defined as the Slatnik Formation. Rich conodont and foraminiferal assemblages were additionally studied. Two new sections of the Slatnik Formation are presented in this paper, proving the existence of the formation across the entire northern segment of the basin. The Povdnar section is located in the continuous facies belt westward from the type-locality on Mt. Kobla. When compared to the type-locality and the other previously studied section at Mt. Slatnik, the Povdnar section exhibits more distal basinal development, where hemipelagic limestone prevails, whereas resedimented limestones occur only sporadically. For this reason, a coarsening and thickening upward trend that was recognized in previously investigated sections is poorly expressed in the Povdnar section. The second newly studied section is located on Mt. Javor where the most northwestern succession of the basin is found. In this section, the Slatnik Formation is composed solely of hemipelagic limestone.

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Sedimentary organic matter characterization of the Triassic–Jurassic boundary GSSP at Kuhjoch (Austria)

Cited by 42 publications

References 58 publications

A new correlation of Triassic–Jurassic boundary successions in NW Europe, Nevada and Peru, and the Central Atlantic Magmatic Province: A time-line for the end-Triassic mass extinction

A new correlation of Triassic–Jurassic boundary successions in NW Europe, Nevada and Peru, and the Central Atlantic Magmatic Province: A time-line for the end-Triassic mass extinction

Latest Triassic climate humidification and kaolinite formation (Western Carpathians, Tatric Unit of the Tatra Mts)

Extent of the Upper Norian – Rhaetian Slatnik Formation in the Tolmin Nappe, eastern Southern Alps

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