- Title
- The geology of the Rouchel Brook - Back Creek District, N.S.W.
- Creator
- Frater, K. M.
- Resource Type
- thesis
- Date
- 1970
- Description
- Bachelor Honours - Bachelor of Science (Honours)
- Description
- Mapping of an area of 130km² was carried out in the Woolooma Gully - Back Creek area to the north of Rouchel Brook. The area is situated approximately 160 km by road from Newcastle and is accessible from the New England Highway at Aberdeen. It contains a stratigraphic sequence of Lower Carboniferous terrestrial and marine facies rocks. The lowermost unit is devoid of fossils and consists siltstones, mudstones and marine arenites of Burindi Facies character. This is conformably overlain by terrestrial arenites, siltstones and conglomeratesin the west and by interbedded marine and terrestrial arenites and silstones in the east. The overlying sequence of coarse terrestrial sediments and ash flow tuffs of the Kutting Facies is interrupted by a wedge of marine siltstones and mudstones which increases in thickness to the east. The early encroachment and late withdrawal of these marine sediments in the east is illustrated. The stratigraphy has been correlated with the European stages on the basis of marine faunal assemblages with the assistance of Dr. J. Roberts of the Bureau of Mineral Resources. The area lies to the north-east of the Rouchel Basin and to the south of the Belltrees Structure (Osborne 1950). The region is structurally complex due to intense transcurrent faulting. The dominant structure is a syncline whose axis traces a curved trend through the western area. The eastern limb of this syncline is displaced by a series of high angle faults and minor flexures. In the north-east the beds are folded into a further anticlinal and synclinal structure, which is also highly faulted. A study of the nature and provenance of the arenties has been made. A detailed petrographic analysis of the ash flow tuffs was carried out and a reconstruction of their cooling history attempted. The area adjoins the Upper Rouchel Brook - Davis Creek district to the south which was mapped concurrently by Sippe (1970).
- Subject
- geology; Rouchel Brook; Back Creek District; rocks; fossils; honours
- Identifier
- http://hdl.handle.net/1959.13/1312498
- Identifier
- uon:22410
- Rights
- Copyright 1970 K. M. Frater
- Language
- eng
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