Journal and Proceedings of
The Royal Society of New South Wales
Volume 103 Part 1 (Issued Jan 20, 1971)
CONTENTS
| AUTHORS & TITLES | PAGES |
| Burman R. A. Solar Charge and the Perihelion Motion of 1566 Icarus | 1-3 |
| Robertson W.H. James Cook and the Transit of Venus | 5-9 |
| Lassak, E.V.. A Note on Some Non-Calcareous Stalactites from the Sandstones of the Sydney Basin, N.S.W. | 11-14 |
| Semeniuk V. The Lower-Middle Palaeozoic Stratigraphy of the Bowan Park Area, Central-Western New South Wales | 15-30 |
| Griffith J.L. On a Classical Pair of Equations | 31-34 |
| Mallett C.W. Devonian Stromatoporoids from the Broken River Formation, North Queensland | 35-42 |
vol. 103 pt 1, pp.1-3
A Solar Charge and the Perihelion Motion of 1566 Icarus
R. Burman
Abstract. If, as suggested by V.A.Bailey, the Sun possesses a net charge, it will induce a dipole moment in a planet or other body. The resulting electrostatic force leads (using non-relativistic mechanics) to an advance of perihelion, which is calculated here for an orbit of arbitrary eccentricity. The formula obtained is applied to observational results for Icarus.
vol. 103 pt 1, pp.5-9
James Cook and the Transit of Venus
W.H. Robertson
Abstract. The history of the use of the transits of Venus in measuring the distance of the Sun is sketched with emphasis on the part played by the Endeavour voyage in the 1799 observations.
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vol. 103 pt 1, pp.11-14
A Note on Some Non-Calcareous Stalactites from the Sandstones of the Sydney Basin, N.S.W.
E.V. Lassak
Abstract. Lamellar limonitic stalactites common in Hawkesbury Sandstone consist of alternating layers of common opal and a mixture of limonitic and sideritic material. Magnesian stalactites of lower Narrabeen age also contain common opal but do not exhibit any particular internal structure. The formation of the stalactites is believed to be closely associated with plant decay processes. Explanations for the lamellar structure of the former and the absence of iron in the latter are proposed.
vol. 103 pt 1, pp.15-30
The Lower-Middle Palaeozoic Stratigraphy of the Bowen Park Area, Central-Western New South Wales
V. Semeniuk
Abstract. Basalts, andesites and breccias of the Cargo Andesite (pre-Upper Gisbornian) are the oldest outcropping rocks in the area. Above them is the Bowen Park Group, a thick accumulation of shallow water carbonates, which have been correlated with with the Upper Gisbornian (or ? Lower Gisbornian) at its base and the Upper Eastonian at its top. This Ordovician limestone sequence has been subdivided into three formations which, in ascending order, are: Daylesford Formation, comprising various lithologies which are thinly bedded in its lower portions and massive towards the top; the extremely fossiliferous Quondong Formation, consisting of thinly bedded limestones and marls; and the massively bedded, generally unfossiliferous Ballingoole Formation.
The Malachi's Hill Beds (Bolindian) conformably overlie the Bowen Park Group. They consist of laminated siltstones, brown siltstones, lithic and volcanic sandstones and some andesite and basalt in their lower portions, and andesite, basalt and breccias in their upper portions. Silurian rocks (="Panuara Formation") are separated from Ordovician rocks by a major fault, and consist of mudstones, shale and some limestone. Emplacement of an intrusive body, the Marylebone Dolerite, in post-Silurian times appears related to this fault.
vol. 103 pt 1, pp.31-34
On a Classical Pair of Equations
James L. Griffith
[No Abstract]
vol. 103 pt 1, pp.35-42
Devonian Stromatoporoids from the Broken River Formation, North Queensland
C.W. Mallett
Abstract. Family Stromatoporellidae is considered to include all genera with a layer of cellules in the laminae (ordinicellular tissue) but the microstructure of the pillars is not critical, and may be compact, vacuolate, or tubulate. Five species are described from the Broken River Formation, of which three are new: Strictostroma porosa sp.nov., S. pustulosum sp.nov. S. ? tubulosum has tubules piercing the tissue of both pillars and laminae. The variation in the distribution of pillars and laminae within each coenosteum and within the whole collection is given, to enable quantitative comparisons to be made with other collections.