Journal and Proceedings of
The Royal Society of New South Wales
Volume 116 Parts 3 and 4 [Issued December, 1983]
CONTENTS
| AUTHORS & TITLES | PAGES |
| King, David S. and Lomb, Nicholas R., Sydney Southern Star Catalogue | 53-70 |
| Cole, T. W., The Technological Revolution in Communications and Computing [Presidential Address, 1983] |
71-76 |
| Vernon, R.H., Restite, Xenoliths and Microgranitold Enclaves in Granites [Clarke Memorial Lecture, 1983] |
77-103 |
| Bembrick, C.S., Stratigraphy and Sedimentation of the Late Permian Illawarra Coal Measures in the Western Coalfield, Sydney Basin, New South Wales | 105-117 |
| Nazer, Roderick, Lambdarina (Rhynchonellacea) from the Upper Visean of Queensland | 119-121 |
| McPhie, J. and Fergusson, C.L., Dextral Movement on the Demon Fault, Northeastern New South Wales: A Reassessment | 123-127 |
| Hickie. John B., The Teaching Hospital: Past. Present and Future | 129-140 |
| Ward, J. M., Address on the Occasion of the Annual Dinner of the Royal Society of New South Wales, 2nd March, 1983 [No Abstract] | 141-142 |
Vol 116 Pts 3-4 pp.53-70
Sydney Southern Star Catalogue
David S. King and Nicholas R. Lomb
Abstract. A catalogue of 26926 star positions to be known as the Sydney Southern Star Catalogue (SSSC) has been produced at Sydney Observatory, principally covering the declination range between -51° 00' and -63° 30'. Some 3244 faint Astrographic Catalogue stars were included to supplement the stars at fainter magnitudes. The standard error of a catalogue position based on four images is 0."10 in either coordinate.The reference catalogue used was the WL50.
Vol 116 Pts 3-4 pp.71-76
The Technological Revolution In Communications and Computing
T. W. Cole
Abstract. The field of microelectronics and its main product the silicon chip (integrated circuit) are used to illustrate rapid advances being made in technology. In communications and computing changes are described which will have profound effects on society. Some of these are discussed in a world context. The main conclusion is that change must be considered inevitable.
Vol 116 Pts 3-4 pp.77-103
Restite, Xenoliths and Microgranitoid Enclaves In Granites
R. H. Vernon
[Clarke Memorial Lecture, delivered 21 September, 1983]
Abstract. Microstructural evidence of restite is meagre or absent in high-level metaluminous (I-type) granitoid plutons, and is limited in high-level peraluminous (S-type) granitoids. The microgranitoid enclaves (autoliths, "cognate xenoliths") that occur abundantly in both metaluminous and peraluminous granitoids are probably formed by quenching of magma in the plutonic environment. The enclaves are best explained by mingling and quenching of globules of more mafic magma in the host granitoid magma, although some may be solid fragments of quenched magma. Several quenching processes are feasible, provided incorporation of partly liquid material is postulated. However, mineralogical and microstructural evidence of hybridism suggests that many microgranitoid enclaves may be the result of magma mixing, either in the same reservoir as the host granitoid or elsewhere. Mingling of magma blobs with the granitoid magma is consistent with all the characteristic features of microgranitoid enclaves.
Vol 116 Pts 3-4 pp.105-117
Stratigraphy and Sedimentation of the Late Permian Illawarra Coal Measures in the Western Coalfield, Sydney Basin, New South Wales
C. S. Bembrick
Abstract. After an extensive examination of data from boreholes recently sunk in the Western Coalfield, a workable stratigraphic subdivision of the Illawarra Coal Measures has been achieved, consisting of four subgroups and sixteen formations. The Cullen Bullen Subgroup, which occurs near the base of the sequence is peculiar to the western margin of the basin, and the remainder of the sequence exhibits considerable similarity to the well known southern coalfield stratigraphy.
The bulk of the sequence in the Western Coalfield is made up of non coal-bearing units of the Charbon Subgroup. These consist mainly of laminated and burrowed mudstones (Baal Bone Formation) containing acritarchs and marine foraminifera. They have a relatively high boron content and have been interpreted as interdistributary bay and prodelta sediments. These beds are overlain by a coarsening-upwards sandstone (Angus Place Sandstone) and these two units together form a significant lithofacies association which is recognisable on a basin-wide scale. Their equivalents in the Hunter Valley are the Watts Sandstone and the Denman Formation, and in the Southern Coalfield the Darkes Forest Sandstone and Bargo Claystone.
Vol 116 Pts 3-4 pp.119-121
Lambarina (Rhynchonellacea) from the Visean of Queensland
Roderick Nazer
Abstract. Lambarina granti sp. nov. is described from the Upper Killala Creek Limestone of the Yarrol Shelf near Mundubbera, southeastern Queensland. It is the first cardiarinid brachiopod described from Australia.
Vol 116 Pts 3-4 pp.123-127
Dextral Movement on the Demon Fault, Northeastern New South Wales: A Reassessment
J. McPhie and C.L. Fergusson
Abstract. The Demon Fault is a meridional transcurrent fault extending for at least 200 km in the eastern part of the New England Orogen. The southern margin of the Late Permian Coombadjha Volcanic Complex, and contacts between units within it, are displaced for 23 km in a dextral sense along the Fault. In the Cooraldooral Creek area the Fault consists of at least four major fractures. This contrasts with the Timburra River area where the trace of the Fault is marked by an elongate zone of sheared rock 500 m wide.
Vol 116 Pts 3-4 pp.129-140
The Teaching Hospital: Past, Present and Future
John B. Hickie
Abstract. Teaching hospitals have recently been under attack in Australia, Great Britain and the United States (Rogers & Blendon, 1978; Westerman, 1980). Much criticism arises from a lack of knowledge and understanding of the origin, history and multiple functions of these institutions.