δ18O and δ13C of Permian brachiopods: A record of seawater evolution and continental glaciation

Korte, Christoph; Jasper, Torsten; Kozur, Heinz W.; Veizer, Ján

doi:10.1016/j.palaeo.2005.03.015

Cited by 221 publications

(142 citation statements)

References 70 publications

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“…1), and that the Zechstein show high d 13 C-sig nals rel a tive to their Tethyan coun ter parts (Korte et al, 2005), they fit well the in terval of rel a tively high d 13 C val ues re lated to the up per Wuchiapingian and the lower Changhsingian (Fig. 9A).…”

Section: Discussionsupporting

confidence: 67%

“…The Zechstein ba sin came into ex is tence af ter rad i cal en vi ronmen tal change when the South ern Perm ian Ba sin, which was an intracontinental de pres sion lo cated well be low the con tempo ra ne ous sea level dur ing most of the Perm ian (Gast et al, 2010, with ref er ences therein), was flooded cat a stroph i cally (Smith, 1979) and be came a mar ginal sea. There fore, al though the iso to pic ef fects of changes which oc curred in the Del a ware and the Zechstein land locked bas ins are sim i lar, they re sulted from dif fer ent mech a nisms Mar ginal seas, such as the Del a ware Ba sin (and the Zechstein ba sin), have high d 13 C-sig nals rel a tive to their Tethyan coun ter parts (Korte et al, 2005); they also show higher d 18 O val ues for brachi o pods, per haps re flect ing a slight d 18 O en rich ment of sea wa ter due to high evap o ra tion rates in the ba sin (Korte et al, 2005). The car bon iso tope curve for the Capitanian and Wuchiapingian car bon ates de vel oped on an ancient seamount in mid-Panthalassa (Kamura area, Kyushu, Japan) shows that the high pos i tive d 13 C val ues (+5 to +6‰) (Kamura event) con tin ued un til the late Capitanian; af ter three neg a tive shifts the d 13 C value felt to +2‰ (Isozaki et al, 2007).…”

Section: Discussionmentioning

confidence: 99%

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Carbon isotope stratigraphy of the basal Zechstein (Lopingian) strata in Northern Poland and its global correlation

Peryt¹,

Durakiewicz²,

Kotarba³

et al. 2012

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The Kupferschiefer (T1) re cords a pe riod of ba sin-wide euxinic con di tions, and is thus con sid ered an ex cel lent time-marker in the Zechstein (Lopingian) ba sin. Pre vi ous stud ies in di cated that both the Kupferschiefer and Marl Slate and the over ly ing Zechstein Limestone (Magnesian Lime stone) show re mark able changes in car bon iso to pic com po si tion to wards higher 13 C carb val ues. We have ex amined the Kupferschiefer of the Zdrada IG 8 bore hole that has re cently been stud ied in de tail by Pašava et al. (2010) aim ing to use the car bon iso tope data from the basal Zechstein for strati graphic cor re la tion of the Zechstein ba sin with the global iso to pic curve for Late Perm ian. The d 13 C val ues in the Zdrada IG 8 change from +0.7‰ at the Kupferschiefer base to +5.4‰ in its mid dle part, then de crease to +1.7‰ at the Kupferschiefer top and next rap idly in crease to +3.5‰ (in the low est part of the Zechstein Lime stone) and fi nally to +5.1‰ (0.5 m above). This in creas ing trend con tin ues into the Zechstein Lime stone; all sub se quent Zechstein ma rine car bon ates show highly pos i tive d 13 C val ues. The d 13 C curve that best shows the Zechstein base may lie near a se quence bound ary in the up per Guadalupian of South China that post dates the mid-Guadalupian ex tinc tion, but the early Wuchiapingian cono donts re ported from the basal Zechstein de pos its else where ex clude such an in ter pre ta tion. The in crease re corded in the in ter val from the Kupferschiefer to the Main Do lo mite fits well the in crease of the d 13 C val ues ob served af ter Iso tope Event 0 (some 258 Ma) of the iso to pic curve for the Late Perm ian, al though the in crease in the Zdrada IG 8 is clearly more sig nif i cant than that of the global d 13 C curve. In turn, the sub se quent slight fall that ac cel erated af ter Iso tope Event 1 fits the more sig nif i cant fall in the Platy Do lo mite. Re search In sti tute, Rakowiecka 4, Po land, slawomir.oszczepalski@pgi.gov.pl; Tomasz Durakiewicz, Los Alamos Na tional Lab o ra tory, Los Alamos, NM87545, USA, Maciej J. Kotarba, Fac ulty Tadeusz M. Peryt and S³awomir Oszczepalski, Pol ish Geo log i cal In sti tute -Na tional of Ge ol ogy, Geo physics and En vi ron men tal Pro tec tion, AGH Uni ver sity of Sci ence and Tech nol ogy,

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Section: Discussionsupporting

confidence: 67%

Section: Discussionmentioning

confidence: 99%

Carbon isotope stratigraphy of the basal Zechstein (Lopingian) strata in Northern Poland and its global correlation

Peryt¹,

Durakiewicz²,

Kotarba³

et al. 2012

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“…This 18 O data shows a decline of 2·5‰ in the Early Permian (Asselian to Artinskian) (Korte et al 2005, fig. 8).…”

Section: Interpretation and Discussionmentioning

confidence: 79%

“…The only specific Permian isotope seawater curves are based on a compilation of brachiopod data from a series of discrete basins (Korte et al 2005). This 18 O data shows a decline of 2·5‰ in the Early Permian (Asselian to Artinskian) (Korte et al 2005, fig.…”

Section: Interpretation and Discussionmentioning

confidence: 99%

“…However, its reliability to distinguish altered from unaltered shells has been questioned, as modern unaltered brachiopod shells can sometimes display orange-coloured luminescence typical of altered carbonate, whereas some clearly altered fossil shells can, in fact, be non-luminescent (Korte et al 2005). England et al (2006) have recently shown that hyperspectral CL imaging can overcome the drawbacks of conventional optical CL and determine the real causes of luminescence.…”

Section: Analytical Techniques To Assess Shell Preservationmentioning

confidence: 99%

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Lower Permian brachiopods from Oman: their potential as climatic proxies

Angiolini¹,

Darbyshire

Stephenson

et al. 2007

Earth and Environmental Science Transactions of the Royal Socie

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The Lower Permian of the Haushi basin, Interior Oman (Al Khlata Formation to Saiwan Formation/lower Gharif member) records climate change from glaciation, through marine sedimentation in the Haushi sea, to subtropical desert. To investigate the palaeoclimatic evolution of the Haushi Sea we used O, C, and Sr isotopes from 31 brachiopod shells of eight species collected bed by bed within the type-section of the Saiwan Formation. We assessed diagenesis by scanning electron microscopy of ultrastructure, cathodoluminescence, and geochemistry, and rejected fifteen shells not meeting specific preservation criteria. Spiriferids and spiriferinids show better preservation of the fibrous secondary layer than do orthotetids and productids and are therefore more suitable for isotopic analysis. 18 O of 3·7 to 3·1‰ from brachiopods at the base of the Saiwan Formation are probably related to glacial meltwater. Above this, an increase in 18 O may indicate ice accumulation elsewhere in Gondwana or more probably that the Haushi sea was an evaporating embayment of the Neotethys Ocean. 13 C varies little and is within the range of published data: its trend towards heavier values is consistent with increasing aridity and oligotrophy. Saiwan Sr isotope signatures are less radiogenic than those of the Sakmarian LOWESS seawater curve, which is based on extrapolation between few data points. In the scenario of evaporation in a restricted Haushi basin, the variation in Sr isotope composition may reflect a fluvial component.

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Permian to Late Triassic Post‐orogenic Collapse and Rifting, Arid Deserts, Evaporating Seas and Mass Extinctions

Ruffell¹

2012

Geological History of Britain and Ireland

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δ18O and δ13C of Permian brachiopods: A record of seawater evolution and continental glaciation

Cited by 221 publications

References 70 publications

Carbon isotope stratigraphy of the basal Zechstein (Lopingian) strata in Northern Poland and its global correlation

Carbon isotope stratigraphy of the basal Zechstein (Lopingian) strata in Northern Poland and its global correlation

Lower Permian brachiopods from Oman: their potential as climatic proxies

Permian to Late Triassic Post‐orogenic Collapse and Rifting, Arid Deserts, Evaporating Seas and Mass Extinctions

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