Classification of volcanic rocks with particular reference to the rocks of New South Wales, Australia

1974 ◽  
Vol 38 (1) ◽  
pp. 83-97 ◽  
Author(s):  
E. A. K. Middlemost
1984 ◽  
Vol 16 (3) ◽  
pp. 357-367 ◽  
Author(s):  
Farhat Yusuf ◽  
M. Hamid Sheikh

SummaryThis study examines data from 47,238 episodes of hospitalization in New South Wales, Australia, pertaining to the patients suffering from mental disorders, i.e. those patients with a principal diagnosis coded from 290 to 315 inclusive, according to the 8th revision of the International Classification of Diseases.An overall prevalence of nine episodes of hospitalization due to mental disorders was found per 1000 population per annum. Major disease categories were neuroses and alcoholism (each accounting for 21% of the total episodes) followed by schizophrenia (16%) and affective psychosis (11%); there were substantial differences by age, sex, marital status and ethnic origin.


2020 ◽  
Vol 26 (1) ◽  
pp. 73-77
Author(s):  
Marc Hendrickx

ABSTRACT Tremolite schists in Ordovician meta-volcanic units in central New South Wales (NSW) consist of fine fibrous tremolite-actinolite. They host tremolite asbestos occurrences, and small quantities of asbestos were mined from narrow vein deposits in central NSW during the last century. When pulverized, the tremolite schist releases mineral fragments that fall into the classification range for countable mineral fibers and may be classed as asbestos despite not having an asbestiform habit. The ambiguity in classification of this type of natural material raises significant health and safety, legal, and environmental issues that require clarification. While the health effects of amphibole asbestos fibers are well known, the consequences of exposure to non-asbestiform, fibrous varieties is not well studied. This group of elongated mineral particles deserves more attention due to their widespread occurrence in metamorphic rocks in Australia. Toxicological studies are needed to assess the health risks associated with disturbance of these minerals during mining, civil construction, forestry, and farming practices.


Soil Research ◽  
1964 ◽  
Vol 2 (2) ◽  
pp. 218 ◽  
Author(s):  
DC Craig ◽  
FC Loughnan

An investigation has been made of the chemical and mineralogical transformations which have accompanied the weathering of six basic volcanic rocks from eastern New South Wales. Montmorillonite is initially formed from the destruction of the olivine, pyroxene, and plagioclase in the parent rock, but, in the near-surface horizons, this mineral is unstable and may form kaolinite, halloysite, or a poorly crystalline montmorillonite. The alumina content shows a steady increase up the profiles, whereas the alkalis, alkaline earths, and some of the silica have been lost in the ground-waters during the mineral transformations. Marked concentrations of iron and titanium occur at specific levels in some of the weathering profiles and explanations of these phenomena are given.


1980 ◽  
Vol 31 (3) ◽  
pp. 449 ◽  
Author(s):  
KW Dawbin ◽  
JC Evans ◽  
MJ Duggin ◽  
EK Leggett

Radiance data collected by Landsat were used to derive wheat production forecasts. Radiance data at three stages of wheat growth in 1976 for the Tamworth region of the New South Wales wheat-belt were analysed by multivariate statistical methods to discriminate between paddocks that had been sown with wheat and those that had not, and to relate radiance to wheat yield. A discriminant function was derived that classified the paddocks, and a regression equation was derived to predict yields of wheat paddocks. Although data were not available for the green vegetative phases of growth, intrinsic testing of classification and yield prediction indicated high accuracy, although extrinsic testing indicated that they were less accurate. Assuming that data are available in future seasons at the vegetative stages, Landsat has a great potential for improving wheat forecasts in Australia.


1995 ◽  
Vol 9 (6) ◽  
pp. 1265 ◽  
Author(s):  
CL Bellamy ◽  
GA Willams

Two new species of Paratrachys, the first known from Australia, are described. P. australia, sp. nov., from coastal New South Wales is placed in the nominate subgenus and P. queenslandia, sp. nov., from Queensland, in P. (Friendiella) Holynski. The species are fully described, illustrated and a brief discussion is presented on the recent generic review by Holynski and the placement of this genus in the familial hierarchy. A modified key for both Paratrachys (Friendiella) and P. (s. str.) the Hederae-circle is presented to incorporate these new species. A cladistic analysis shows that the Paratrachydina is best defined as monotypic.


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