scholarly journals Structural history of the Greenvale Province, north Queensland: Early Palaeozoic extension and convergence on the Pacific margin of Gondwana*

2007 ◽  
Vol 54 (4) ◽  
pp. 573-595 ◽  
Author(s):  
C. L. Fergusson ◽  
R. A. Henderson ◽  
I. W. Withnall ◽  
C. M. Fanning
Keyword(s):  
The Pacific ◽  
Structural History ◽  
History Of ◽  
Pacific Margin ◽  
Early Palaeozoic

An introductory overview to the concept of displaced terranes

1983 ◽  
Vol 20 (6) ◽  
pp. 994-999 ◽  
Author(s):  
Zvi Ben-Avraham ◽  
Amos Nur
Keyword(s):  
Large Scale ◽  
Continental Margins ◽  
Oceanic Plateaus ◽  
Introductory Overview ◽  
The Pacific ◽  
History Of ◽  
Accreted Terranes ◽  
Pacific Margin ◽  
The Pacific Ocean ◽  
Oceanic Plates

On land much of the Pacific margin is composed of allochthonous terranes, which are of continental and noncontinental origins. In the oceans numerous oceanic rises, some of which are submerged continental fragments, are presently embedded in the oceanic plates. These oceanic rises are probably future accreted terranes. They thus represent one stage in the development of allochthonous terranes found in orogenic zones. Minerals found in these terranes were formed at locations that in the past could have been thousands of kilometres away. This is because some oceanic terranes were split into several parts that moved with their respective plates in different directions. Also, faulting at the continental margins caused large-scale concurrent and post-accretionary horizontal translations of hundreds of kilometres of the allochthonous terranes.Studying the allochthonous terranes may provide important information about the Paleozoic and early Mesozoic history of the Pacific Ocean, because most of the oceanic crust of this age has disappeared leaving only those allochthonous terranes that were once oceanic plateaus within this crust. Understanding the history of the Pacific basin plates and of the allochthonous terranes may lead to the discovery of minerals within the submerged oceanic plateaus.

Igneous history of the Andean Cordillera and Patagonian plateau around latitude 46°S

1981 ◽  
Vol 303 (1474) ◽  
pp. 105-149 ◽  
Keyword(s):  
Calc Alkaline ◽  
Alkali Basalts ◽  
Cinder Cones ◽  
Andean Cordillera ◽  
The Pacific ◽  
Igneous Activity ◽  
History Of ◽  
Pacific Margin ◽  
Rhyolite Volcanism ◽  
Back Arc

From the Middle Jurassic onwards persistent igneous activity in the southern Andes around 46 °S was controlled by easterly dipping subduction along the Pacific margin. Cogenetic plutonic rocks belonging to the Patagonian batholith, and calc-alkaline volcanics ranging from basaltic andesites to rhyolitic tuffs and ignimbrites are the principal products. Erosion of the primary volcanics has led at various times to the development of thick volcaniclastic sequences, for example in the Cretaceous-Lower Tertiary Divisadero formation. The Coyhaique region marks the northerly extension of a narrow back-arc basin in which the marine Neocomian successions accumulated. Volcaniclastics from the island arc, which presumably lay to the west, are intercalated with the sediments. Although the marine basin was short-lived a mildly extensional back-arc regime may have existed through much of Mesozoic-Recent times. Widespread basalt-rhyolite volcanism on the eastern side of the cordillera seems to have been associated with this tectonic environment. Remnants of the Patagonian basalt plateau at latitude 45-47 °S extend from the Argentine-Chile frontier to Lago Colhue Huapi. Four principal age and compositional groups have been distinguished in the lavas, (i) The oldest, which are about 80 Ma, occur in sections at Senguerr and Morro Negro. They are almost exclusively tholeiitic, but show some calc-alkaline affinities and resemble in other respects basalts from marginal basins, (ii) The second group (57-43 Ma) occur in the lower part of the Chile Chico section with a compositional spread from olivine tholeiites through alkali basalts to one occurrence of a basanite. (iii) The upper part of the main plateau sequence, where the flows are in the range 25-9 Ma, are dominantly of alkali basalt composition, (iv) Post-plateau flows from small cinder cones on the surface of the plateau range in age from ca. 4 Ma to 0.2 Ma or less. They are mostly highly undersaturated basanites, with occasional leucite basanites, enriched in incompatible elements. A few of the earlier tholeiites with calc-alkali traits may have been closely associated with subduction or marginal basin processes. The younger lavas are more alkalic intraplate types generated in the remote back-arc extensional zone.

A Short history of the post-graduate surgical training in Fiji - where to from here?

2018 ◽  
Vol 21 (2) ◽  
pp. 103-107 ◽  
Author(s):  
Jitoko Kelepi Cama ◽  
Sonal Singh Nagra
Keyword(s):  
Surgical Training ◽  
Training Programme ◽  
Post Graduate ◽  
School Of Medicine ◽  
Postgraduate Training Programme ◽  
The Pacific ◽  
National University ◽  
History Of ◽  
Training Of Surgeons ◽  
Pacific Island Nations

Post-graduate surgical training at the Fiji National University (FNU), previously known as the Fiji School of Medicine) has recently been updated by incorporating elements from the Royal Australasian College of Surgeons (RACS) training curriculum. The revised curriculum maintains strong contextual relevance to the needs and pathologies of the Pacific Island nations.  This paper outlines why the FNU surgical postgraduate training programme should be applauded as a successful programme in the training of surgeons for the region.

Oceans and Landless Farms: Linking Southern and Northern Shadow Places of Industrial Livestock (1954–1975)

2020 ◽  
Author(s):  
Floor Haalboom
Keyword(s):  
Animal Feed ◽  
Marine Ecosystem ◽  
Global South ◽  
Humboldt Current ◽  
The Public ◽  
The Pacific ◽  
Production And Consumption ◽  
Boom And Bust ◽  
History Of ◽  
Global North

This article argues for more extensive attention by environmental historians to the role of agriculture and animals in twentieth-century industrialisation and globalisation. To contribute to this aim, this article focuses on the animal feed that enabled the rise of ‘factory farming’ and its ‘shadow places’, by analysing the history of fishmeal. The article links the story of feeding fish to pigs and chickens in one country in the global north (the Netherlands), to that of fishmeal producing countries in the global south (Peru, Chile and Angola in particular) from 1954 to 1975. Analysis of new source material about fishmeal consumption from this period shows that it saw a shift to fishmeal production in the global south rather than the global north, and a boom and bust in the global supply of fishmeal in general and its use in Dutch pigs and poultry farms in particular. Moreover, in different ways, the ocean, and production and consumption places of fishmeal functioned as shadow places of this commodity. The public health, ecological and social impacts of fishmeal – which were a consequence of its cheapness as a feed ingredient – were largely invisible on the other side of the world, until changes in the marine ecosystem of the Pacific Humboldt Current and the large fishmeal crisis of 1972–1973 suddenly changed this.

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