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| Titel: |
A dynamic fluvial model for the Sydney Basin |
| Auteur: |
Conaghan, Patrick J. Jones, J. Gilbert McDonnell, Kevin L. Royce, Keith |
| Verschenen in: |
Australian journal of earth sciences |
| Paginering: | Jaargang 29 (1982) nr. 1-2 pagina's 55-70 |
| Jaar: |
1982-04 |
| Inhoud: |
Late Permian and Triassic successions of the Sydney Basin, exposed in cliffs of the north coast, south coast and Blue Mountains, include sandstones in which quartz content increases up-sequence and palaeocurrents swing from southwesterly through southeasterly to northeasterly. These basin-wide phenomena are interpreted to have resulted from the northeasterly migration of a drainage net, in which northeasterly-flowing tributaries bearing quartz sand from the craton met southwesterly-flowing tributaries bearing labile sediment from an arcuate rim-orogen, and blended in a southeasterly-flowing trunk stream down the axis of a foredeep. Migration of the drainage net records the retreat of an arc-derived clastic wedge in the latter part of a megacycle which extends from the top of the mid-Permian Nowra Sandstone to the top of the mid-Triassic Hawkesbury Sandstone. The same megacycle occurs in the Bowen Basin, and may also occur in the Nilsen-Mackay Basin of Antarctica. |
| Uitgever: |
Taylor & Francis |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 2 van 22 gevonden artikelen
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