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Details for article 14 of 15 found articles
| Title: |
Structure and tectonic history of the Brisbane metamorphics in the Brisbane area |
| Author: |
Holcombe, R. J. |
| Appeared in: |
Australian journal of earth sciences |
| Paging: | Volume 24 (1977) nr. 7-8 pages 475-489 |
| Year: |
1977-12 |
| Contents: |
The Palaeozoic basement rocks of the Brisbane area have undergone three major deformations and a minor kinking episode. The central zone of Bunya Phyllite is dominated by a second-generation transposition layering whereas the flanking Neranleigh-Fernvale Beds are dominated by first-generation transposition structures. The major structure previously described in the area, the Indooroopilly Anticline, is an apparent antiform formed in part by the intersection of dominant first- and second-generation structures and in part by a major third-generation flxeure. The complete geometry of the first-generation layering across the structure is suggested using vergence relationships but the stratigraphic relations and the structure of the stratigraphic boundaries are virtually impossible to deduce. Two possibilities are suggested and a major conclusion is that the Bunya Phyllite may be merely a unit within the Neranleigh-Fernvale Beds. The first-generation deformation is a regional event whose effects can be traced north for some 500 km whereas the second- and third-generation structures are more restricted. There is evidence to suggest that all three generations may be related to the same tectonic event, possibly Carboniferous in age. |
| Publisher: |
Taylor & Francis |
| Source file: |
Elektronische Wetenschappelijke Tijdschriften |
Details for article 14 of 15 found articles
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