Petrographical Notes on some Chloritoid Rocks

1925 ◽  
Vol 62 (7) ◽  
pp. 309-319 ◽  
Author(s):  
C. E. Tilley
Keyword(s):  
South Australia ◽  
The State ◽  
Western Coast ◽  
Broken Hill ◽  
Hill Area

Chloritoid-Bearing schists have so far not been recorded from the State of South Australia, though such are known from the Pre-Cambrian rocks of the Broken Hill area. The chloritoid rocks now to be shortly described occur interbedded with quartzites, forming the meridional ridge of the “Frenchman”, on the western coast of southern Eyre Peninsula. In a previous paper (l)1 the rocks of this area have been referred to, as comprised within two groups, a sedimentary series—the Warrow series, and the Dutton series, a group of acid granites of gneissic habit with associated aplites and pegmatites, often rich in tourmaline and carrying garnet, and beryl. These rocks invade the sediments of the Warrow series.

Childhood cycling fatalities in South Australia before and after the introduction of helmet legislation

2020 ◽  
Vol 60 (3) ◽  
pp. 196-199
Author(s):  
Siobhan O’Donovan ◽  
Corinna van den Heuvel ◽  
Matthew Baldock ◽  
Roger W Byard
Keyword(s):  
Traffic Accident ◽  
Reporting System ◽  
Marked Decrease ◽  
South Australia ◽  
The State ◽  
Bicycle Helmet ◽  
Societal Factors ◽  
Legislative Change ◽  
System Database ◽  
Before And After

In the years following the introduction of legislation in Australian states mandating the wearing of helmets, there was a decline in the number of deaths. Debate has occurred, however, as to why this occurred. The Traffic Accident Reporting System database, which records data for all police-reported crashes in South Australia, was searched for all cases of deaths occurring in the state in bicycle riders aged ≤14 years from January 1982 to December 2001. The numbers of deaths were then compared over the 10-year periods before (1982–1991) and after (1992–2001) the introduction of helmet legislation, and also on a yearly basis from 1982 to 2001. Comparing the numbers of deaths in the two periods before and after helmet legislation in 1991 showed a marked decrease in cases from 36 to 12. However, in examining the numbers of deaths per year in greater detail, it appears that these were already steadily reducing from nine cases per year in 1982 (2.9/100,000) to two cases in 1991 (0.67/100,000) to a virtual plateau after 1991 (ranging from 0 to 2 cases annually). It seems that the introduction of compulsory bicycle helmet wearing in South Australia came at a time when the numbers of child cyclist deaths had been steadily declining over the preceding decade. While helmet wearing clearly protects children who are still riding bicycles, the reasons for the reduction in numbers of deaths appears more complex than legislative change and likely involves a subtle interaction with other behavioural and societal factors and preferences.

scholarly journals Feeding activity of the cayenne pompano Trachinotus cayennensis (Cuvier 1832) (Perciformes, Carangidae) in estuaries on the western coast of the state of Maranhão, Brazil

2019 ◽  
Vol 79 (2) ◽  
pp. 311-320
Author(s):  
A. C. L. Castro ◽  
J. W. J. Azevedo ◽  
H. R. S. Ferreira ◽  
L. S. Soares ◽  
J. R. Pinheiro-Júnior ◽  
...  
Keyword(s):  
Size Range ◽  
Eating Habits ◽  
Feeding Activity ◽  
The State ◽  
Western Coast ◽  
Ontogenetic Changes ◽  
Importance Index ◽  
Size Groups ◽  
Subsequent Calculation ◽  
Feeding Plasticity

Abstract The present paper addresses the feeding activity of Trachinotus cayennensis, collected in Lençóis Bay (1°18’S – 1°19’S; 44°51’W – 44°53’W) on the western coast of the state of Maranhão, Brazil. Sampling was conducted between June 2012 and June 2013 using driftnets with stretch mesh sizes from 95 to 100 mm. A total of 205 individuals (114 females and 91 males) were analyzed. Statistically significant differences in the sex ratio were found in June, September and December 2012. Food items were analyzed based on frequency of occurrence and volumetric method, with the subsequent calculation of the alimentary importance index. Three size groups were defined to determine possible ontogenetic changes in eating habits based on the size range of the individuals collected: I (˂ 29 cm), II (29.1 to 37.0) and III (≥ 37.1). Eleven food item categories were identified: mollusks, polychaetes, crustaceans, nematodes, insects, algae, bryozoans, ophiuroids, fishes, vegetal matter and sediments. The variety of items in the diet of T. cayennensis indicates considerable feeding plasticity and opportunistic behavior. Seasonal variations influenced the feeding pattern of the species, with greater feeding activity in the dry season. The considerable availability of resources in estuarine habitats of the western coast of Maranhão constitutes another factor that influences the feeding behavior of this species.

The State Library of South Australia

1992 ◽  
Vol 23 (2) ◽  
pp. 105-112
Author(s):  
Frances Awcock ◽  
Sophy Athan ◽  
Susan Ball ◽  
Elizabeth Ho ◽  
Kaj Linstrom
Keyword(s):  
South Australia ◽  
The State ◽  
State Library
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