Stratigraphy, Paleomagnetic Results, and Preliminary Palynology across the Permian-Triassic (P-Tr) Boundary at Carlton Heights, Southern Karoo Basin (South Africa)

  • Dylan M. Schwindt
  • Michael R. Rampino
  • Maureen B. Steiner
  • Yoram Eshet
Part of the Impact Studies book series (IMPACTSTUD)


The most severe mass extinction of marine species and terrestrial vertebrates and plants is associated with the Permian-Triassic (P-Tr) boundary (~253 Ma). In order to investigate the relative timing of the biotic crises in terrestrial and marine environments, we studied the stratigraphy, paleomagnetism, and palynology of the Carlton Heights section in the southern Karoo Basin, South Africa. Stratigraphic and palynological study at Carlton Heights revealed the abrupt disappearance of Late Permian gymnosperm taxa and replacement by Triassic palynomorphs just below the boundary between the Balfour Formation and the Katberg sandstone, at a layer characterized by abundant remains of fungi. This “fungal spike” occurs globally in marine and terrestrial P-Tr boundary sections, and thus can be used to correlate the extinctions of marine fauna and terrestrial land plants and vertebrates in the P-Tr boundary interval. Our results suggest that the extinction of mammal-like reptiles at the end of the Permian may have preceded the fungal event and land-plant extinction within an interval of less than ~100,000 years, and possibly less than ~25,000 years.

Paleomagnetic data confirm multiple magnetizations of Karoo Basin P-Tr strata during Jurassic intrusive events. Mildly altered sedimentary strata, more altered sediments, and an intrusive dike all showed normal polarity magnetization stable to about 500-575°C and 60 mT; reversed polarity was exhibited primarily as trends at high demagnetization temperatures and field strengths. The normal polarity directions in the sedimentary and igneous rocks are statistically identical to the mean Jurassic direction during Karoo igneous activity. A Permian-Triassic magnetic signature is no longer identifiable.


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  1. Anderson JM (1977) The biostratigraphy of the Permian and Triassic: Part 3, A review of Gondwana Permian palynology with particular reference to the northern Karoo Basin, South Africa. Memoirs of the Botanical Survey of South Africa 41: 1–300Google Scholar
  2. Ballard MM, Van der Voo R, Hälbich IW (1986) Remagnetizations in late Permian and early Triassic rocks from southern Africa and their implications for Pangea reconstructions. Earth and Planetary Science Letters 79: 412–418CrossRefGoogle Scholar
  3. Bowring SA, Erwin DH, Jin YG, Martin MW, Davidek K, Wang W (1998) U/Pb Zircon geochronology and tempo of the end-Permian mass extinction. Science 280: 1039–1045CrossRefGoogle Scholar
  4. Broecker WS, Peacock S (1999) An ecologic explanation for the Permo-Triassic carbon and sulfur isotope shifts. Global Biogeochemical Cycles 13: 1167–1172CrossRefGoogle Scholar
  5. Broglio-Loriga C, Cassinis G (1992) The Permo-Triassic boundary in the Southern Alps (Italy) and in adjacent Periadriatic regions. In: Sweet WC, Zunyi Y, Dickins JM, Hongfu (eds) Permo-Triassic events in the eastern Tethys. Cambridge University Press, Cambridge, pp 78–97CrossRefGoogle Scholar
  6. Catuneanu O, Elango HN (2001) Tectonic control on fluvial styles: The Balfour Formation of the Karoo Basin, South Africa. Sedimentary Geology 140: 291–313.CrossRefGoogle Scholar
  7. Cirilli S, Radrizzani CP, Ponton M, Radrizzani S (1998) Stratigraphical and palaeoenvironmental analysis of the Permian-Triassic transition in the Badia Valley (Southern Alps, Italy). Palaeogeography, Palaeoclimatology, Palaeoecology 138: 85–113CrossRefGoogle Scholar
  8. Duncan RA, Hooper PR, Rehacek J, Marsh JS, Duncan AR (1997) The timing and duration of the Karoo igneous event, southern Gondwana. Journal of Geophysical Research 12: 18,127–18,138Google Scholar
  9. Eshet Y, Rampino MR, Visscher H (1995) Fungal event and palynological record of ecological crisis and recovery across the Permian-Triassic boundary. Geology 23: 967–970CrossRefGoogle Scholar
  10. Gialanella PR, Heller F, Haag M, Nurgaliev D, Borisov A, Burov B, Jasonov P, Khasanov D, Ibragimov S, Zharkov I (1997) Late Permian magnetostratigraphy on the eastern Russian platform. Geologie en Mijnbouw 76: 145–154CrossRefGoogle Scholar
  11. Groenewald GH (1989) Stratigrafie en sedimentologie van die Groep Beaufort in die Nooordoos Vrystaat (Stratigraphy and sedimentology of the Beaufort Group in the Northeast Freestate). Bulletin of the Geological Survey of South Africa 96: 1–62Google Scholar
  12. Hankel O (1992) Late Permian to Early Triassic microfloral assemblages from the Maji Ya Chumvi Formation, Kenya. Review of Palaeobotany and Palynology 72: 129–147CrossRefGoogle Scholar
  13. Hargraves RB, Rehacek J, Hooper PR (1997) Paleomagnetism of the Karoo igneous rocks in southern Africa. South African Journal of Geology 100: 195–212Google Scholar
  14. Jin YG, Wang Y, Wang W, Shang QH, Cao CQ, Erwin DH (2000) Pattern of marine mass extinction near the Permian-Triassic boundary in South China. Science 289: 432–436CrossRefGoogle Scholar
  15. Keyser N (1977) Geological Map of the Republic of South Africa and the Kingdoms of Lesotho and Swaziland. South African Council for Geoscience, JohannesburgGoogle Scholar
  16. Kirschvink JL, Ward PD (1998) Magnetostratigraphy of Permian/Triassic boundary sediments in the Karoo of southern Africa [abs]. Journal of African Earth Sciences 27: 124Google Scholar
  17. Krull ES, Retallack GJ (2000) Delta C-13 depth profiles from paleosols across the Permian-Triassic boundary: Evidence for methane release. Geological Society of America Bulletin 112: 1459–1472Google Scholar
  18. Labandiera CC, Sepkoski JJ, Jr (1993) Insect diversity in the fossil record. Science 261: 310–315CrossRefGoogle Scholar
  19. Looy CV, Brugman WA, Dilcher DL, Visscher H (1999) The delayed resurgence of equatorial forests after the Permian-Triassic ecologic crisis. Proceedings of the National Academy of Sciences of the USA 96: 13857–13862CrossRefGoogle Scholar
  20. Looy CV, Twitchett RJ, Dilcher DL, Van Konijnenburg-Van Cittert JHA, Visscher H (2000) Life in the end-Permian dead zone. Proceedings of the National Academy of Sciences of the USA 98: 7879–7883Google Scholar
  21. MacLeod KG, Smith RMH, Koch PL, Ward PD (2000) Timing of mammal-like reptile extinctions across the Permian-Triassic boundary in South Africa. Geology 28: 227–230CrossRefGoogle Scholar
  22. Margaritz M, Bar R, Baud, A, Holser WT (1988) The carbon-isotope shift at the Permian/Triassic boundary in the southern Alps is gradual. Nature 331: 337–339CrossRefGoogle Scholar
  23. Margaritz M, Krishnamurthy RV, Holser WT (1992) Parallel trends in organic and inorganic carbon isotopes across the Permian-Triassic boundary. American Journal of Science 292: 727–739CrossRefGoogle Scholar
  24. Marshall CR (1990) Confidence intervals on stratigraphic ranges. Paleobiology 16: 1–10Google Scholar
  25. Maxwell WD (1992) Permian and Early Triassic extinction of nonmarine tetrapods. Paleontology 35: 571–583Google Scholar
  26. Morante R (1996) Permian and early Triassic isotopic records of carbon and strontium in Australia and a scenario of events about the Permian-Triassic boundary. Historical Biology 11:289–310Google Scholar
  27. Mundil R, Metcalfe I, Ludwig KR, Renne PR, Oberli F, Nicoll RS (2001) Timing of the Permian-Triassic biotic crisis: implications from new zircon U/Pb age data (and their limitations). Earth and Planetary Science Letters 187: 131–145CrossRefGoogle Scholar
  28. Nyambe IA, Utting J (1997) Stratigraphy and palynostratigraphy, Karoo Supergroup (Permian and Triassic), mid-Zambezi Valley, southern Zambia. Journal of African Earth Sciences 24: 563–583CrossRefGoogle Scholar
  29. Ouyang S, Utting J (1990) Palynology of Upper Permian and Lower Triassic rocks, Meishan, Changxing County, Zhejiang Province, China. Review of Palaeobotany and Palynology 66: 65–103CrossRefGoogle Scholar
  30. Pálfy J, Smith P (2000) Synchrony between Early Jurassic extinction, oceanic anoxic event, and the Karoo-Ferrar flood basalt volcanism. Geology 28: 747–750CrossRefGoogle Scholar
  31. Pehl CW, Kirschvink JL, Ward PD (2001) Towards a magnetostratigraphy of the terrestrial Permian-Triassic boundary [abs.]. Geological Society of America, Abstracts with Programs 33(6): A–390Google Scholar
  32. Poort R J, Clement-Westerhof JA, Looy CV, Visscher H (1997) Aspects of Permian palaeobotany and palynology. 17. Conifer extinction in Europe at the Permian-Triassic junction: Morphology, ultrastructure and geographic/stratigraphic distribution of Nuskoisporites dulhuntyi (prepollen of Ortiseia, Walchiaceae). Review of Palaeobotany and Palynology 97: 9–39CrossRefGoogle Scholar
  33. Rampino MR, Adler AC (1998) Evidence for abrupt latest Permian mass extinction of Foraminifera: Results of tests for the Signor-Lipps effect. Geology 26: 415–418CrossRefGoogle Scholar
  34. Rampino MR, Prokoph A, Adler A (2000) Tempo of the end-Permian event: High-resolution cyclostratigraphy at the Permian-Triassic boundary. Geology 28: 643–646.CrossRefGoogle Scholar
  35. Raup DM (1979) Size of the Permo-Triassic bottleneck and its evolutionary implications. Science 206: 217–218CrossRefGoogle Scholar
  36. Retallack GJ (1995) Permian-Triassic life crisis on land. Science 267: 77–80CrossRefGoogle Scholar
  37. Scholger R, Mauritsch HJ, Brandner R (2000) Permian-Triassic boundary magnetostratigraphy from the Southern Alps (Italy). Earth and Planetary Science Letters 176: 495–508CrossRefGoogle Scholar
  38. Sephton MA, Looy CV, Veefkind RJ, Brinkhuis H, De Leeuw JW, Visscher H (2002) A synchronous record of δ13C shifts in the oceans and atmosphere at the end of the Permian. In: Koeberl C, MacLeod KG (eds) Catastrophic Events and Mass Extinctions: Impacts and Beyond, Geological Society of America Special Paper 356: 455–462Google Scholar
  39. Smith RMH (1990) A review of stratigraphy and sedimentary environments of the Karoo Basin of South-Africa. Journal of African Earth Sciences 10: 117–137CrossRefGoogle Scholar
  40. Smith RMH (1995) Changing fluvial environments across the Permian-Triassic boundary in the Karoo Basin, South-Africa and possible causes of tetrapod extinctions. Palaeogeography, Palaeoclimatology, Palaeoecology 117: 81–104CrossRefGoogle Scholar
  41. Smith RMH, Ward PD (2001) Pattern of vertebrate extinctions across an event bed at the Permian-Triassic boundary in the Karoo Basin of South Africa. Geology 29: 1147–1150CrossRefGoogle Scholar
  42. Stapleton RP (1978) Microflora from a possible Permo-Triassic transition in South Africa. Review of Palaeobotany and Palynology 25: 253–258CrossRefGoogle Scholar
  43. Steiner MB (2001) Magnetostratigraphic correlation and dating of West Texas and New Mexico Late Permian strata, in Geology of the Llano Estacado. In: Lucas SG, Ulmer-Schoolle DS (eds) Guidebook, Guidebook for 52nd Field Conference, New Mexico Geological Society, pp 59–68Google Scholar
  44. Steiner MB, Ogg J, Zhang Z, Sun S (1989) The Late Permian/Early Triassic magnetic polarity time scale and plate motions of South China. Journal of Geophysical Research 94: 7343–7363CrossRefGoogle Scholar
  45. Steiner MB, Morales M, Shoemaker EM (1993) Magnetostratigraphic, biostratigraphic and lithologic correlation in Triassic strata of the western U.S. In: Aissioui D, McNeill D, Hurley N (eds) Application of Paleomagnetism to Sedimentary Geology, Society of Economic Paleontologists and Mineralogists, Special Publication 49: 41–577Google Scholar
  46. Twitchett RJ, Looy CJ, Morante R, Visscher H, Wignall PB (2001) Rapid and synchronous collapse of marine and terrestrial ecosystems during the end-Permian biotic crisis. Geology 29: 51–354CrossRefGoogle Scholar
  47. Utting J (1979) Pollen and spore assemblages from the Upper Permian of the North Luangava Valley, Zambia. Proceedings of the 4th International Palynology Conference, Moscow 2: 165–174Google Scholar
  48. Visscher H, Brugman WA (1986) The Permian-Triassic boundary in the Southern Alps: A palynological approach. Memoire della Societá Geologia Italiana 34: 121–128Google Scholar
  49. Visscher H, Brinkhuiss H, Dilcher DL, Elsik WC, Eshet Y, Looy CV, Rampino MR, Traverse A (1996) The terminal Paleozoic fungal event: Evidence of terrestrial ecosystem destabilization and collapse. Proceedings of the National Academy of Sciences USA 93: 2155–2158CrossRefGoogle Scholar
  50. Wang K, Geldsetzer HHJ, Krouse HR (1995) Permian-Triassic extinction: Organic δ13C evidence from British Columbia, Canada. Geology 22: 580–584CrossRefGoogle Scholar
  51. Ward PD, Montgomery DR, Smith R (2000) Altered river morphology in South Africa related to the Permian-Triassic extinction. Science 289: 1740–1743CrossRefGoogle Scholar
  52. Wignall PB, Kozur H, Hallam A (1996) On the timing of palaeoenvironmental changes at the Permo-Triassic (P/Tr) boundary using conodont biostratigraphy. Historical Biology 12: 39–62Google Scholar
  53. Wright RP, Askin RA (1987) The Permian-Triassic boundary in the Southern Morondava Basin of Madagascar as defined by plant microfossils. Geophysical Monographs 41: 157–166CrossRefGoogle Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 2003

Authors and Affiliations

  • Dylan M. Schwindt
    • 1
  • Michael R. Rampino
    • 1
    • 2
  • Maureen B. Steiner
    • 3
  • Yoram Eshet
    • 4
    • 5
  1. 1.Earth and Environmental Science ProgramNew York UniversityNew YorkUSA
  2. 2.NASA, Goddard Institute for Space StudiesNew YorkUSA
  3. 3.Department of Geology and GeophysicsUniversity of Wyoming LaramieUSA
  4. 4.Geological Survey of IsraelJerusalemIsrael
  5. 5.Tel Hai Academic CollegeTel HaiIsrael

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