An astronomical timescale for the Permian-Triassic mass extinction reveals a two-step, million-year-long terrestrial crisis in South China (2023)
Journal Article
Hua, F., Shao, L., Zhang, T., Bond, D. P., Wang, X., Wang, J., …Hilton, J. (2023). An astronomical timescale for the Permian-Triassic mass extinction reveals a two-step, million-year-long terrestrial crisis in South China. Earth and planetary science letters, 605, Article 118035. https://doi.org/10.1016/j.epsl.2023.118035

The Permian-Triassic Mass Extinction (PTME) is the greatest biotic crisis of the Phanerozoic. In terrestrial settings, the PTME appears to have been diachronous and it has been suggested that losses initiated before the marine crisis. We examine orga... Read More about An astronomical timescale for the Permian-Triassic mass extinction reveals a two-step, million-year-long terrestrial crisis in South China.

Rapid marine oxygen variability: Driver of the Late Ordovician mass extinction (2022)
Journal Article
Kozik, N. P., Young, S. A., Newby, S. M., Liu, M., Chen, D., Hammarlund, E., …Owens, J. D. (2022). Rapid marine oxygen variability: Driver of the Late Ordovician mass extinction. Science Advances, 8(46), eabn8345. https://doi.org/10.1126/sciadv.abn8345

The timing and connections between global cooling, marine redox conditions, and biotic turnover are underconstrained for the Late Ordovician. The second most severe mass extinction occurred at the end of the Ordovician period, resulting in ~85% loss... Read More about Rapid marine oxygen variability: Driver of the Late Ordovician mass extinction.

Dynamic ocean redox conditions during the end-Triassic mass extinction: Evidence from pyrite framboids (2022)
Journal Article
Li, J., Song, H., Tian, L., Bond, D. P., Song, H., Du, Y., …Tong, J. (2022). Dynamic ocean redox conditions during the end-Triassic mass extinction: Evidence from pyrite framboids. Global and planetary change, 218, Article 103981. https://doi.org/10.1016/j.gloplacha.2022.103981

The end-Triassic (∼201 Mya) records one of the five largest mass extinction events of the Phanerozoic. Extinction losses were coincident with large igneous province volcanism in the form of the Central Atlantic Magmatic Province (CAMP) and major carb... Read More about Dynamic ocean redox conditions during the end-Triassic mass extinction: Evidence from pyrite framboids.

Two deep marine oxygenation events during the Permian-Triassic boundary interval in South China: relationship with ocean circulation and marine primary productivity (2022)
Journal Article
Ge, Y., & Bond, D. P. (2022). Two deep marine oxygenation events during the Permian-Triassic boundary interval in South China: relationship with ocean circulation and marine primary productivity. Earth-Science Reviews, 234, Article 104220. https://doi.org/10.1016/j.earscirev.2022.104220

Marine redox conditions through the Permian-Triassic (P-T) boundary interval have been intensively studied in South China with different redox proxies and from different sections. However, the resultant interpretations are inconsistent and sometimes... Read More about Two deep marine oxygenation events during the Permian-Triassic boundary interval in South China: relationship with ocean circulation and marine primary productivity.

Volcanically-Induced Environmental and Floral Changes Across the Triassic-Jurassic (T-J) Transition (2022)
Journal Article
Zhang, P., Lu, J., Yang, M., Bond, D. P., Greene, S. E., Liu, L., …Hilton, J. (2022). Volcanically-Induced Environmental and Floral Changes Across the Triassic-Jurassic (T-J) Transition. Frontiers in ecology and evolution, 10, Article 853404. https://doi.org/10.3389/fevo.2022.853404

The End-Triassic Mass Extinction (ETME) saw the catastrophic loss of ca. 50% of marine genera temporally associated with emplacement of the Central Atlantic Magmatic Province (CAMP). However, the effects of the ETME on land is a controversial topic.... Read More about Volcanically-Induced Environmental and Floral Changes Across the Triassic-Jurassic (T-J) Transition.

Diachronous end-Permian terrestrial ecosystem collapse with its origin in wildfires (2022)
Journal Article
Lu, J., Wang, Y., Yang, M., Zhang, P., Bond, D. P., Shao, L., & Hilton, J. (2022). Diachronous end-Permian terrestrial ecosystem collapse with its origin in wildfires. Palaeogeography, palaeoclimatology, palaeoecology, 594, Article 110960. https://doi.org/10.1016/j.palaeo.2022.110960

The Permian-Triassic Mass Extinction (PTME) is the greatest biodiversity crisis in Earth history and while the marine crisis is increasingly well constrained, the timing and cause(s) of terrestrial losses remain poorly understood. There have been sug... Read More about Diachronous end-Permian terrestrial ecosystem collapse with its origin in wildfires.

Sulfidic anoxia in the oceans during the Late Ordovician mass extinctions – insights from molybdenum and uranium isotopic global redox proxies (2021)
Journal Article
Dahl, T. W., Hammarlund, E. U., Rasmussen, C. M. Ø., Bond, D. P., & Canfield, D. E. (2021). Sulfidic anoxia in the oceans during the Late Ordovician mass extinctions – insights from molybdenum and uranium isotopic global redox proxies. Earth-Science Reviews, 220, Article 103748. https://doi.org/10.1016/j.earscirev.2021.103748

The Late Ordovician Mass Extinction wiped out 85% of animal species in two phases (LOME1 and LOME2). The kill mechanisms for the extinction phases are debated, but deteriorating climate and the expansion of marine anoxia appear to have been important... Read More about Sulfidic anoxia in the oceans during the Late Ordovician mass extinctions – insights from molybdenum and uranium isotopic global redox proxies.

Transient Permian-Triassic euxinia in the southern Panthalassa deep ocean (2021)
Journal Article
Takahashi, S., Strachan, L. J., Yin, R., Wignall, P. B., Bond, D. P., & Grasby, S. E. (in press). Transient Permian-Triassic euxinia in the southern Panthalassa deep ocean. Geology, 49(8), 889-893. https://doi.org/10.1130/G48928.1

Both the duration and severity of deep-water anoxic conditions across the Permian-Triassic mass extinction (PTME) are controversial. Panthalassa Ocean circulation models yield varying results, ranging from a well-ventilated deep ocean to rapidly deve... Read More about Transient Permian-Triassic euxinia in the southern Panthalassa deep ocean.

Global warming and mass extinctions associated with large igneous province volcanism (2021)
Book Chapter
Bond, D. P., & Sun, Y. (2021). Global warming and mass extinctions associated with large igneous province volcanism. In R. E. Ernst, A. J. Dickson, & A. Bekker (Eds.), Large Igneous Provinces: A Driver of Global Environmental and Biotic Changes (83-102). American Geophysical Union. https://doi.org/10.1002/9781119507444.ch3

The coincidence of large igneous province (LIP) eruptions with at least three, if not all, of the Big Five biotic crises of the Phanerozoic implies that volcanism is a key driver of mass extinctions. Many LIP-induced extinction scenarios invoke globa... Read More about Global warming and mass extinctions associated with large igneous province volcanism.

Tellurium in Late Permian-Early Triassic Sediments as a Proxy for Siberian Flood Basalt Volcanism (2020)
Journal Article
Regelous, M., Regelous, A., Grasby, S. E., Bond, D. P., Haase, K. M., Gleißner, S., & Wignall, P. B. (2020). Tellurium in Late Permian-Early Triassic Sediments as a Proxy for Siberian Flood Basalt Volcanism. Geochemistry, geophysics, geosystems G³, 21(11), Article e2020GC009064. https://doi.org/10.1029/2020GC009064

We measured the concentrations of trace elements in Late Permian to Early Triassic sediments from Spitsbergen. High mercury concentrations in sediments from the level of the Permo-Triassic Mass Extinction (PTME) at this location were previously attri... Read More about Tellurium in Late Permian-Early Triassic Sediments as a Proxy for Siberian Flood Basalt Volcanism.