Permian-Triassic magnetostratigraphy—new results from South China

Heller, Friedrich; Chen, Haihong; Dobson, Jon; Haag, M.

doi:10.1016/0031-9201(94)02993-l

Cited by 51 publications

(30 citation statements)

References 19 publications

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“…5). When the magnetostratigraphic section from the southern main Karoo Basin is compared to the already published magnetostratigraphic sections in marine strata from China (Heller et al, 1995;Heller et al, 1988;Steiner et al, 1989), Pakistan (Haag and Heller, 1991) (Mørk et al, 1999;Scholger et al, 2000), some common features become apparent. A reverse polarity interval is observed in the Upper Permian.…”

Section: Discussionmentioning

confidence: 98%

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Paleomagnetic Constraints on the Permian-Triassic Boundary in Terrestrial Strata of the Karoo Supergroup, South Africa: Implications for Causes of the End-Permian Extinction Event

Kock¹,

Kirschvink

2004

Gondwana Research

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The closure of the Palaeozoic witnessed the greatest biotic crisis in earth history. Surprisingly little is known about the effects and timing of the terrestrial counterpart of the well-described End-Permian mass extinction from known marine successions worldwide. In the present study, reliable paleomagnetic results were obtained from a PT boundary section in the terrestrial Karoo Basin of South Africa. Permo-Triassic aged mudstones from a locality in the Eastern Cape Province yielded two magnetic chrons, reverse followed by normal (with the boundary possibly close to the reversal). This extends to results from a previous study: thereby jointly identifying a R/N/R polarity pattern for this boundary interval. The PTB interval is constrained below the red mudstones of the Beaufort Group at the present locality and within reverse-magnetised green mudstone, implying a diachronic relation between the marine and terrestrial End-Permian mass extinction events.

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Section: Discussionmentioning

confidence: 98%

“…The Permian-Triassic boundary (PTB) is positioned at or very near to the end of a reverse polarity zone within marine strata (Heller et al, 1995), but within the Karoo the mass extinction of mammal-like reptiles occurred during a time of normal polarity (Fig. 5).…”

Section: Discussionmentioning

confidence: 99%

Paleomagnetic Constraints on the Permian-Triassic Boundary in Terrestrial Strata of the Karoo Supergroup, South Africa: Implications for Causes of the End-Permian Extinction Event

Kock¹,

Kirschvink

2004

Gondwana Research

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“…Within R 2 P, three short normal polarity zones were detected based on the Shangsi, Wulong and Linshui sections (Heller et al, 1988(Heller et al, , 1995Steiner et al, 1989;Chen et al, 1991;Steiner, 2006;Glen et al, 2009). These three short normal polarity zones are probably respectively in the Clarkina dukouensis, C. leveni and C. guangyuanensis zones based on biostratigraphic control.…”

Section: Magnetostratigraphymentioning

confidence: 97%

“…Geochronologic ages are from our latest data, Bowring et al (1998), Mundil et al (2001Mundil et al ( , 2004, Zhou et al (2002) and Zhong and Zhu (2006). Polarity zones are from Jin et al (2000b); Chen et al (1991); Glen et al (2009);Heller et al (1988Heller et al ( , 1995; Steiner et al (1989Steiner et al ( , 2006, Li and Wang (1989) and Liu et al (1999). Isotope (d 13 C carb ) chemostratigraphy (green curve) is integrated from three sections spanning the whole Lopingian in South China (unpublished data by authors).…”

Section: Biostratigraphic Frameworkmentioning

confidence: 99%

“…These three short normal polarity zones are probably respectively in the Clarkina dukouensis, C. leveni and C. guangyuanensis zones based on biostratigraphic control. This reverse polarity zone (R 2 P) is followed by a long normal polarity zone (N 3 P) (Figure 1) (Heller et al, 1988(Heller et al, , 1995Steiner et al, 1989;Chen et al, 1991;Jin et al, 2000b;Steiner, 2006;Glen et al, 2009), which ranges from a horizon close to the base of the Clarkina orientalis Zone to the upper part of the Clarkina subcarinata Zone, spanning nearly 3.8 million years based on geochronologic constraints (Figure 1). A few normal polarity zones are also detected in the lower and middle parts of the Changhsingian based on the Meishan and Shangsi sections (Li and Wang, 1989;Liu et al, 1999).…”

Section: Magnetostratigraphymentioning

confidence: 99%

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High‐resolution Lopingian (Late Permian) timescale of South China

et al. 2010

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The Lopingian represents the last epoch of the Palaeozoic Era and is bracketed by two severe biotic mass extinctions associated with dramatic environmental changes. The Lopingian Epoch lasted about 7 millions years and was also bracketed by large volcanic eruptions with the Emeishan volcanics at the base and the Siberian traps at the top. Considerable data have accumulated recently and in this paper we attempt to summarize these findings in a high-resolution Lopingian (Late Permian) timescale that integrates currently available multiple biostratigraphic, isotope chemostratigraphic, geochronologic and magnetostratigraphic data. In South China at least 13 conodont zones, multiple polarity zones and large carbon isotope fluctuations in the Lopingian are recognized and provide the high-resolution calibration that is essential to study this Late Permian interval characterized by Earth's largest biotic extinction. We also present a global correlation chart for the marine Lopingian Series.

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Plume Winter Scenario for Biosphere Catastrophe: The Permo-Triassic Boundary Case

Isozaki

Superplumes: Beyond Plate Tectonics

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Permian-Triassic magnetostratigraphy—new results from South China

Cited by 51 publications

References 19 publications

Paleomagnetic Constraints on the Permian-Triassic Boundary in Terrestrial Strata of the Karoo Supergroup, South Africa: Implications for Causes of the End-Permian Extinction Event

Paleomagnetic Constraints on the Permian-Triassic Boundary in Terrestrial Strata of the Karoo Supergroup, South Africa: Implications for Causes of the End-Permian Extinction Event

High‐resolution Lopingian (Late Permian) timescale of South China

Plume Winter Scenario for Biosphere Catastrophe: The Permo-Triassic Boundary Case

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