- journal_title：Journal of the Geological Society
- Contributor：D. W. Jolley ; R. Daly ; I. Gilmour ; S.P. Kelley
- Publisher：Geological Society of London
- Date：2013-05-01
- Format：text/html
- Language：en
- Identifier：10.1144/jgs2012-088
- journal_abbrev：Journal of the Geological Society
- issn：0016-7649
- volume：170
- issue：3
- firstpage：477
- section：Research Articles
d="p-1">Sedimentary rocks filling the Boltysh meteorite crater preserve an expanded record of post Cretaceous–Palaeogene (K/Pg) event vegetation destruction and subsequent floral recolonization. A post-destruction barren zone is succeeded by a fern spore spike recording the initial recovery vegetation. The Boltysh fern spore spike is divisible into two phases. Phase 1 is characterized by low abundances of fern spores, whereas the overlying Phase 2 has high fern spore abundances and contains common palm pollen. Comparison of the Boltysh Phase 2 fern spore spike with other palynological records shows strong similarities to the immediately post K/Pg boundary record of the Western Interior, North America. Variation in the composition of the Boltysh palynofloras has been used to define four moisture availability cycles between the K/Pg boundary and the Dan-C2 negative carbon isotope excursion, a period of some 300 kyr. Early post K/Pg event vegetation community recovery followed a common seral successional pathway at rates seen in large igneous provinces, although enhanced by high moisture availability. Continued succession to the first true swamp community was at a considerably slower tempo. The post K/Pg event vegetation recovery was therefore retarded by lack of moisture availability, extending the apparent period of recovery.