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81.More information
The pattern of rocky shorelines in eastern and southeastern fjords of Iceland, between Reydarfjördur and Álftafjördur (exposed or sheltered places), is examined. Faults are very scanty and have no effect upon the general trends of the coastline. Small parallel asymmetric rocky headlands are numerous. Differential marine erosion is the main factor. Thick flood basalts have a western dip (6° to 10° at sea level) and the strandflat cuts across the strata. The headlands correspond to the strongest and thickest flows: olivine tholeiites, tholeiites and feldspar-porphyritic basalts. Notches, overhangs and sea caves develop in weak rocks (propylitised basalts, basalts with abundant amygdale minerals, reddish tuffaceous material between the flows,...). Differences in dyke erosion occur. Some dykes give prominent ridges or walls; others are excavated, specially the composite dykes (thin basaltic margins and thick rhyolitic cores). Transverse, oblique and longitudinal types of structural coastlines are distinguished.
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82.More information
SummaryThis article, taken from a doctoral dissertation, sets out to describe the double significance of alternative schools which were developed in the liberated zones during armed struggle in Guinée-Bissau from 1963 to 1973 : double significance as ideological riposte and as a break in the reproduction of social relationships of domination. The basic hypotheses of the author's thesis is that the alternative school as an abstract reality of autonomous ideological practices of dominated classes constitutes an opportunity for heuristic analysis which reveals the school's place in the interplay of class relationships. 49. J.S. Saul, art. cit., p. 331.