DOI: 10.1016/j.palaeo.2015.05.032
论文题名: Environmental significance of lungfish burrows (Gnathorhiza) within Lower Permian (Wolfcampian) paleosols of the US midcontinent
作者: McCahon T.J. ; Miller K.B.
刊名: Palaeogeography, Palaeoclimatology, Palaeoecology
ISSN: 0031-0182
出版年: 2015
卷: 435 起始页码: 1
结束页码: 12
语种: 英语
英文关键词: Gnathorhiza
; Lungfish
; Paleoclimate
; Paleosols
; Permian
英文摘要: Burrows of the lungfish Gnathorhiza occur in the fine-grained strata of the Lower Permian (Wolfcampian) Blue Spring Shale Member, of the Matfield Formation near Manhattan, Kansas. Thousands of lungfish burrows occur in three beds of a compound paleosol profile, with the vast majority confined to a single bed several meters below the Florence Limestone Member of the Barneston Limestone (Chase Group). The burrows, a high percentage of which contain lungfish bones, occur in a 145. m long lens-shaped unit comprised of clayey siltstone that exhibits platy to subangular-blocky peds, and downward and laterally branching thin rhizoliths. The uppermost paleosol horizon in each level is gleyed, indicating that there was standing water for part of the year. The paleoecosystem represented by these units formed in a low-lying terrestrial coastal paleolandscape with subtle topography and imperfectly drained paleosols equivalent to present-day aquents. These paleosols are part of a pedogenic sequence recording an upward climatic trend from semi-arid to monsoonal. © 2015 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/68869
Appears in Collections: 过去全球变化的重建
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作者单位: Department of Geology, Kansas State University, 108 Thompson Hall, Manhattan, KS, United States; 25591 Last Stand Rd., Custer, SD, United States
Recommended Citation:
McCahon T.J.,Miller K.B.. Environmental significance of lungfish burrows (Gnathorhiza) within Lower Permian (Wolfcampian) paleosols of the US midcontinent[J]. Palaeogeography, Palaeoclimatology, Palaeoecology,2015-01-01,435