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| Titel: |
Devonian fluvial strata in and adjacent to the Emsian-Eifelian Moona Vale Trough, western New South Wales |
| Auteur: |
Neef, G. Larsen, D. F. |
| Verschenen in: |
Australian journal of earth sciences |
| Paginering: | Jaargang 50 (2003) nr. 1 pagina's 81-96 |
| Jaar: |
2003-02 |
| Inhoud: |
The lower part of the mid-Emsian - mid-Eifelian strata exposed near Moona Vale Station are here called Units 2 and 3 of the Muckabunnya beds (new) whereas the mid-upper part of these previously unnamed Emsian-Eifelian strata are represented by the fining-upwards Menamurtee Sandstone (new). Within this formation lies the largely debris-flow-deposited Moona Vale Conglomerate Member (new) which comprises boulders of monomictic sandstone of Devonian aspect derived from an alluvial fan lying west of the Koonenberry Fault. It is inferred that the Menamurtee Sandstone and Unit 3 of the Muckabunnya beds were deposited in the 20 km-wide active Moona Vale Trough (new), which extended at least 40 km northwards as a pullapart between a northwest-trending, sinistral Koonenberry Fault and a north-northeast-trending sinistral basement fault lying along the trend of the Lake Wintlow Line. In mid-Eifelian time at the onset of the Tabberabberan Orogenic Pulse, trough growth ceased and continuing sinistral motion (till ?late Givetian time) along the Koonenberry Fault (but probably not along the eastern branch of the Lake Wintlow Line Fault) caused the Menamurtee Anticline (and at least eight other structures) to form in the mapped area east of the Koonenberry Fault. The anticline was then truncated by erosion by mid-Givetian time and sandstone (Gum Creek beds: new) were deposited unconformably across its truncated crest. In late Givetian to Famennian time the fine-grained fluvial Ravendale Formation, which crops out west of the Koonenberry Fault in the study area, was deformed during the Kanimblan Orogenic Pulse when the fault was dextral. |
| Uitgever: |
Taylor & Francis |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 2 van 11 gevonden artikelen
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