DOI: 10.1016/j.palaeo.2014.06.009
论文题名: First known fire scar on a fossil tree trunk provides evidence of Late Triassic wildfire
作者: Byers B.A. ; Ash S.R. ; Chaney D. ; DeSoto L.
刊名: Palaeogeography, Palaeoclimatology, Palaeoecology
ISSN: 0031-0182
出版年: 2014
卷: 411 起始页码: 180
结束页码: 187
语种: 英语
英文关键词: Chinle Formation
; Fire scar
; Late Triassic
; Paleoecology
; Wood anatomy
英文摘要: Fire scars are well known to fire ecologists and dendrochronologists worldwide, and are used in dating fires and reconstructing the fire histories of modern forests. Evidence of fires in ancient forests, such as fossil charcoal (fusain), is well known to paleontologists and has been reported in geologic formations dating back to the Late Devonian. We describe what we conclude is a fire scar on a fossil tree trunk from the Late Triassic Chinle Formation of southeastern Utah (~ 200-225 Ma). The external features of the prehistoric scar match those of modern fire scars better than those of scars created by other kinds of wounding events. The fossil specimen also exhibits a number of changes in wood anatomy similar to those reported in modern fire-scarred trees, including a band of very small tracheids that indicate growth suppression immediately associated with the scarring event; an area with a tangential row of probable traumatic resin ducts; and a significant increase in tracheid size following the scarring event that indicates a growth release. No fire scar resembling those in modern trees has previously been described in petrified wood as far as we can determine. The presence of a fire scar not only provides further evidence of ancient fires, but also shows that at least some individual trees survived them, indicating that fire could have been an ecological and evolutionary force in forests at least as early as the Late Triassic. © 2014 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/69333
Appears in Collections: 过去全球变化的重建
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作者单位: Bruce Byers Consulting, 405 Timber Lane, Falls Church, VA, United States; Department of Earth and Planetary Sciences, University of New Mexico, Albuquerque, NM, United States; Department of Paleobiology, National Museum of Natural History, Smithsonian Institution, Washington, DC, United States; Centre for Functional Ecology, Department of Life Sciences, University of Coimbra, Calc¸ada Martim de Freitas, Coimbra, Portugal
Recommended Citation:
Byers B.A.,Ash S.R.,Chaney D.,et al. First known fire scar on a fossil tree trunk provides evidence of Late Triassic wildfire[J]. Palaeogeography, Palaeoclimatology, Palaeoecology,2014-01-01,411