Journal of the Royal Society of Western Australia - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Journal of the Royal Society of Western Australia write by . This book was released on 1975. Journal of the Royal Society of Western Australia available in PDF, EPUB and Kindle.
Alkaline Rocks and Carbonatites of the World, Part 4
Alkaline Rocks and Carbonatites of the World, Part 4 - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Alkaline Rocks and Carbonatites of the World, Part 4 write by A.R. Woolley. This book was released on 2019-09-02. Alkaline Rocks and Carbonatites of the World, Part 4 available in PDF, EPUB and Kindle. The alkaline igneous rocks and carbonatites are compositionally and mineralogically the most diverse of all igneous rocks and, apart from their scientific interest, are of major, and growing, economic importance. They are important repositories of certain metals and commodities, indeed the only significant sources of some of them, and include Nb, the rare earths, Cu, V, diamond, phosphate, vermiculite, bauxite, raw materials for the manufacture of ceramics, and potentially Th and U. The economic potential of these rocks is now widely appreciated, particularly since the commencement of the mining of the Palabora carbonatite for copper and a host of valuable by-products. Similarly, the crucial economic dominance of rare earth production from carbonatite-related occurrences in China, has stimulated the world-wide hunt for similar deposits. This volume describes and provides ready access to the literature for all known occurrences of alkaline igneous rocks and carbonatites of Antarctica, Asia and Europe excluding the former USSR, Australasia and oceanic islands. More than 1,200 occurrences from 59 countries are outlined together with those of 57 oceanic islands and island groups. The descriptions include geographical coordinates and information on general geology, rock types, petrography, mineralogy, age and economic aspects with the principal references cited. There are 429 geological and distribution maps and a locality index. As has been demonstrated by the three earlier volumes, the present book is likely to be of considerable interest to mineral exploration companies, as there are no comprehensive published reviews of the economic aspects of the alkaline rocks. It will also interest research scientists in the fields of igneous petrology and volcanology, and geologists concerned with the regional distribution of igneous rocks and their geodynamic relationships.
Transactions of the Geological Society of South Africa
Transactions of the Geological Society of South Africa - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Transactions of the Geological Society of South Africa write by Geological Society of South Africa. This book was released on 1907. Transactions of the Geological Society of South Africa available in PDF, EPUB and Kindle. Some volumes accompanied by Annexure.
Recent Advances in Indo-Pacific Prehistory
Recent Advances in Indo-Pacific Prehistory - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Recent Advances in Indo-Pacific Prehistory write by Misra. This book was released on 2023-07-17. Recent Advances in Indo-Pacific Prehistory available in PDF, EPUB and Kindle.
Fencing for Conservation
Fencing for Conservation - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Fencing for Conservation write by Michael J. Somers. This book was released on 2011-11-23. Fencing for Conservation available in PDF, EPUB and Kindle. The conflict between increasing human population and biodiversity conservation is one of the IUCN’s key threatening processes. Conservation planning has received a great deal of coverage and research as a way of conserving biodiversity yet, while theoretically successful, it has never been tested. Simple lines on maps to illustrate conservation areas are unlikely to be successful in the light of human encroachment. It may be that some form of overt display is necessary to ensure the protection of reserves. This may be signage, presence of guards/rangers or physical fencing structures. The need for some form of barrier goes beyond restricting human access. The megafauna of Africa pose a genuine threat to human survival. In southern Africa, fences keep animals in and protect the abutting human population. Elsewhere, fencing is not considered important or viable. Where poverty is rife, it won’t take much to tip the balance from beneficial conservation areas to troublesome repositories of crop-raiders, diseases and killers. Conversely, in New Zealand fences are used to keep animals out. Introduced species have decimated New Zealand’s endemic birds, reptiles and invertebrates, and several sites have been entirely encapsulated in mouse-proof fencing to ensure their protection. Australia faces the same problems as New Zealand, however surrounds its national parks with cattle fences. Foxes and cats are free to enter and leave at will, resulting in rapid recolonisation following poisoning campaigns. How long will these poison campaigns work before tolerance, aversion or resistance evolves in the introduced predator populations?
