By David Hopley
During the last 25 years significant info at the geomorphological evolution of the world's greatest coral reef approach, the nice Barrier Reef, has develop into on hand. This ebook studies the background of geomorphological experiences of the nice Barrier Reef and assesses the affects of sea-level swap and oceanographic techniques at the improvement of reefs over the past 10,000 years. It offers analyses of lately attained info from the nice Barrier Reef and reconstructions of the series of occasions that have ended in its present geomorphology. The authors emphasise the significance of the geomorphological time span and its purposes for current administration functions. it is a priceless reference for tutorial researchers in geomorphology and oceanography, and also will attract graduate scholars in comparable fields.
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Extra resources for The Geomorphology of the Great Barrier Reef: Development, Diversity and Change
In the south, where the shelf is much wider only Tern and Redbill Reefs have small granitic outcrops the probable raison d’eˆtre for their location in an otherwise reefless area. There is a strong possibility that other reefs have rocky foundations close to the surface. 3 Evolution of the Coral Sea 27 the rocks of adjacent islands. They are concentrated in two areas and have suggested (Hopley, 1982, figs. 2) that bedrock may be buried at very shallow depth between these two locations. The overall influence of basement rocks within the continental shelf on the GBR and its evolution can only be surmised but is likely to have been significant.
These and many more studies carried out since 1982 form the foundation for the present work. 5 Outline of the following chapters The organization of coasts into a series of overlapping temporal and spatial scales has been superbly exemplified by Woodroffe (2002a, ch. 1). This synthesis of recent work on the GBR is approached in a similar manner to explain how the present morphology has evolved. The basic premise is that most modern reefs, possibly excluding many fringing reefs, have grown over older Pleistocene reefal foundations which were drowned during the latter part of the Holocene transgression.
Details of the core have been published by the International Consortium (2001), Webster and Davies (2003), Braithwaite et al. (2004), and Braga and Aguirre (2004). The lowest section from 210 to 158 m is composed of non-reefal grainstones and packstones interpreted as debris flows and turbidites. Some coral lithoclasts were recovered (Seriatopora, Tubipora, Millepora) but were considered to have originated from higher up the slope. Braithwaite et al. (2004) suggest that these may indicate older carbonates in the region than were recovered at Ribbon 5.
The Geomorphology of the Great Barrier Reef: Development, Diversity and Change by David Hopley