Many times when the author saw the bedouins of southern Sinai excavate their wells in the crystalline rocks, from which this part of the peninsula is built, the story of Moses striking the rock to get water came to mind.
The contributions in this book were presented, orally or as posters, at the International Volcanological Congress held in New Zealand from 1 to 9 February 1986, the centenary year of the Tarawera eruption of 10 June 1886.
This collection of papers is based on a symposium held in 1987 at the Interna- tional Union of Geology and Geodesy Congress in Vancouver, British Colum- bia.
Major structural features are used in this study to reconstruct the links which existed between North America, Europe and Africa before the opening of the North Atlantic Ocean.
International Mineral Economics provides an integrated overview of the concepts important for mineral exploration, mine valuation, mineral market analysis, and international mineral policies.
Dredged Material and Mine Tailings are two of the same thing once they are deposited on land: they must be safe-guarded, wash-out must be prevented, and they must be protected by a plantcover.
At last geochemists are offered one comprehensive reference book which gives the Eh-pH diagrams for 75 elements found in the earth's surface environment, including transuranic and other radioactive species.
Discusses the global evolution of the earth, such as core-mantle separation, mantle-crust evolution, origin of ocean-atmosphere system, on the basis of isotope earth science andpaleomagnetism, where recent devlopment in planetology andastrophysical theories are extensively taken into account.
I am pleased to be able to introduce this book by Monsieur lean-Claude Gall, firstly because it is a book, secondly because its author has been a colleague for 15 years, and finally because it is a book which demonstrates the growing importance of Palaeobiology.
Coated grains have always attracted attention, at first of naturalists, and later of geologists, and the interest in these peculiar bodies was re- lated both to their intriguing form and their significance in facies inter- pretation and sedimentology and to their relevance to accumulations of hydrocarbons and other mineral deposits.
Progress in Precambrian geology has been exceptionally great, indeed quite striking for geologists of the older generation; only some 30-40 years ago the Precambrian appeared as an uncertain and even mystic prelude to geologic evolution.
Students of a phenomenon as common but complex as andesite genesis often are overwhelmed by, or overlook, the volume and diversity of relevant information.
In these days of information explosion and high-cost publishing, it is perhaps only reasonable for an author to convince the reading public that it is getting something worth reading.
Our colleagues from the French-speaking parts of Switzerland - the Suisses romands - and above all the committee of the 3rd Cycle, e Earth Sciences (3 Cycle, Sciences de la Terre) honored us by asking us to give a course on Isotope Geology for the year 1977.
Colloid science has been applied by soil chemists and clay mineral- ogists for many years, and some of the most important studies on the behavior of colloids have been contributed by them.
The problem of time-and strata-bound formation of ore deposits has during the past decade become one of the most debated topics in cur- rent international discussion.
