By David Hopley
ISBN-10: 0521853028
ISBN-13: 9780521853026
Over the past 25 years enormous info at the geomorphological evolution of the world's greatest coral reef method, the nice Barrier Reef, has turn into on hand. This booklet reports the heritage of geomorphological experiences of the good Barrier Reef and assesses the affects of sea-level switch and oceanographic techniques at the improvement of reefs over the past 10,000 years. It provides analyses of lately attained facts from the good Barrier Reef and reconstructions of the series of occasions that have resulted in its present geomorphology. The authors emphasise the significance of the geomorphological time span and its purposes for current administration functions. it is a precious reference for tutorial researchers in geomorphology and oceanography, and also will entice graduate scholars in similar fields.
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Extra resources for The Geomorphology of the Great Barrier Reef: Development, Diversity and Change
Example text
Working behind the coastal ranges these rivers were able to isolate large areas of westward sloping but eastward draining tablelands. Nearer to the coast the most resistant rocks (mainly granites) of what had been the initial and highest coastal divide remained as the highest peaks in Queensland overlooking a narrow coastal plain (Fig. 2). These include Mounts Bartle Fre`re (1611 m), Bellenden Ker (1593 m), Elliot (1234 m), and Dalrymple (1259 m). These mountains may not be especially high, but given their proximity to the coast and the coincident high annual rainfall totals for these areas (>3000 mm), they have the potential for very high sediment yields to the coastline.
Webster and Davies (2003) note that Stage 11 at about 410 ka ago was the warmest interglacial in the last 450 ka and may have been the final trigger for extensive development. The event may also have been somewhat arbitrary once the general environment for reef growth was established. 2). 6 The Pleistocene Reef In the far north of the GBR, especially within the Gulf of Papua, reef growth may have started soon after northern Australia entered tropical waters. 5 km thick occurs beneath Portlock and Boot Reefs.
7 Conclusion The data from Ribbon 5 suggest a foundation age for the GBR of between 452 and 365 ka for the base of the main reef section (Webster and Davies, 2003). The base of the rhodolith section, which contains two reefal units, is estimated at between 606 and 520 ka. Coral lithoclasts occur in the base of the hole and, as Braithwaite et al. ’’ Further drilling of the GBR may push back the age of initiation quite significantly. An area of special interest may be the Pompey Complex of the south central GBR (see Chapter 9).
The Geomorphology of the Great Barrier Reef: Development, Diversity and Change by David Hopley
by Daniel
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