Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1111/j.1365-3091.2008.00974.x |
Sedimentology and architecture of the Douglas Creek terminal splay, Lake Eyre, central Australia | |
Fisher, John A.1,2; Krapf, Carmen B. E.3; Lang, Simon C.4; Nichols, Gary J.2; Payenberg, Tobias H. D.3,5 | |
通讯作者 | Fisher, John A. |
来源期刊 | SEDIMENTOLOGY
![]() |
ISSN | 0037-0746 |
出版年 | 2008 |
卷号 | 55期号:6页码:1915-1930 |
英文摘要 | Douglas Creek terminal splay, sited on the western shoreline of Lake Eyre North, central Australia, covers a surface area of approximately 4 km(2) with a down-system length of 2.5 km from the distributary channels terminus to the splay fringe. Two distributary channels feed two sediment lobes which have amalgamated to form the terminal splay. Three primary facies associations have been identified sub-dividing the creek terminus into distributary channel, proximal and distal splay sections. Proximal splay sediments are characterized by erosionally based, relatively thick (> 100 mm), stacked sheets of coarse to medium sand which commonly display trough and planar cross-bedding, whereas the distal splay is characterized by thin (generally < 50 mm) massive beds of very fine sand, silt and clay. The change in splay sedimentology is interpreted as reflecting the transition from bedload-dominated deposition to suspended load-dominated deposition from decelerating sheetfloods as they spread out from the channel onto the dry lake bed. A proximal to distal splay transition zone is also noted where deposits of both facies associations interfinger laterally and vertically. In scale, geometry and facies associations, the Douglas Creek terminal splay is very different to the often cited Neales terminal splay complex located 70 km to the north. It is suggested that these architectural differences reflect variations in discharge volume, input sediment distribution and the degree of vegetation cover. Understanding the variation in terminal splay architecture has very significant implications for the modelling of analogous subsurface petroleum systems, which at present relies on few modern-day analogues. |
英文关键词 | Arid sedimentology central Australia dryland endorheic basins ephemeral rivers Lake Eyre sheetfloods terminal splay |
类型 | Article |
语种 | 英语 |
国家 | England ; Australia |
收录类别 | SCI-E |
WOS记录号 | WOS:000261084900018 |
WOS关键词 | FLOW DEPOSITS ; BASIN ; MODEL ; BEDS ; EXAMPLES ; MIOCENE ; SYSTEM ; STREAM ; FANS |
WOS类目 | Geology |
WOS研究方向 | Geology |
来源机构 | University of London |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/159171 |
作者单位 | 1.BG Grp, Reading RG6 1PT, Berks, England; 2.Univ London, Dept Geol, Egham TW20 0EX, Surrey, England; 3.Univ Adelaide, Australian Sch Petr, Adelaide, SA 5005, Australia; 4.Woodside Energy Ltd, Perth, WA 6000, Australia; 5.Chevron Energy Technology Pty Ltd, Perth, WA 6000, Australia |
推荐引用方式 GB/T 7714 | Fisher, John A.,Krapf, Carmen B. E.,Lang, Simon C.,et al. Sedimentology and architecture of the Douglas Creek terminal splay, Lake Eyre, central Australia[J]. University of London,2008,55(6):1915-1930. |
APA | Fisher, John A.,Krapf, Carmen B. E.,Lang, Simon C.,Nichols, Gary J.,&Payenberg, Tobias H. D..(2008).Sedimentology and architecture of the Douglas Creek terminal splay, Lake Eyre, central Australia.SEDIMENTOLOGY,55(6),1915-1930. |
MLA | Fisher, John A.,et al."Sedimentology and architecture of the Douglas Creek terminal splay, Lake Eyre, central Australia".SEDIMENTOLOGY 55.6(2008):1915-1930. |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。