Reply to the comment on Kaiho et al., “A forest fire and soil erosion event during the Late Devonian mass extinction” [Palaeogeogr. Palaeoclimatol. Palaeoecol. 392 (2013): 272–280]

摘要: Kaiho et al. (2013) showed that high values of organic molecule indices combustion, soil erosion, and euxinia occurred at the Frasnian–Famennian transition Sinsin, Belgium. Marynowski Racki (2014) commented on paper. Their issues mainly address (1) low resolution data, (2) reliability proxies, (3) weathering as a cause peaks (4) discrepancy between rare charcoal occurrence combustion proxy, (5) stepwise collapse huge global reef ecosystem ending well before F–F boundary. In response to comment (1), positive excursion δ13Ccarb marking in Sinsin section indicates has enough strata detect environmental changes during culmination Late Devonian mass extinction. On (2): erosion was indicated not only by dibenzofuran but also spike cadalene. Dibenzothiophene should have increased when euxinic water developed surface sediments, which is supported coincidence isorenieratane dibenzothiophene middle shelf late Permian. We show index Cretaceous–Paleogene transition, indicating this ratio useful proxy combustion. (3): we cannot explain because consistently well-preserved state rock samples. (4): need early Famennian, corresponding maxima sea levels, clarify discrepancy. (5): our model for event marked extinction acme; it may ended boundary, can acme transition.