NUK - logo
E-resources
Full text
Peer reviewed
  • Age correlation of Large Ig...
    Ernst, Richard E.; Rodygin, Sergei A.; Grinev, Oleg M.

    Global and planetary change, January 2020, 2020-01-00, Volume: 185
    Journal Article

    Large Igneous Provinces (LIPs) are emerging as a significant driver of short duration climatic change including mass extinctions. Here we compare the record of LIPs against the timing of Devonian biotic crises that are well recorded in the numerous anoxia events throughout this period. The largest LIPs are two-pulse events at ca. 370 and ca. 360 Ma that are present in both Siberia (Yakutsk-Vilyui LIP) and Baltica (Kola-Dnieper LIP) and correlate with the Kellwasser anoxia events (late Frasnian) and Annulata or Dasberg and Hangenberg anoxia events in the late/latest Famennian. The regionally significant Altai Sayan LIP is only approximately dated at c.400 Ma and within uncertainties could be linked to either (or both?) the c. 405 Ma Chebbi or Atopus anoxia events near the basal Emsian (associated with graptolite extinction) or the c. 385–390 Ma group of anoxia events in the Eifelian or Givetian. Additional magmatic events that are less precisely dated are: 1) the c. 400–345 Ma Kedon magmatism of the Omolon craton, possibly linked with the Yakutsk-Vilyui event, 2) 380–330 Ma Maritimes (Magdalen) basin event of the Appalachian region of eastern Canada and adjacent US, 3) middle-late Devonian Selwyn basin alkaline magmatism of northwestern Canada, and 4) the Ordovician - late Silurian- possibly Devonian Soltan Maidan event Iran. However, more precise dating is required for each of these magmatic events before they can be properly compared with the Devonian biotic crisis record. •Pulses of 380–360 Ma Yakutsk-Vilyui & Kola-Dnieper LIPs linked with late Frasnian and middle/late Famennian anoxia events•Ca. 400 Ma Altay-Sayan LIP correlated withearly Devonian biotic crises.•Other magmatic events (Soltan Maidan, Magdalen, Selwyn basin) need precise dating to evaluate any anoxia links