Visualizing Geology is designed to help your students learn effectively. Created in collaboration with the National Geographic Society and our Wiley Visualizing Consulting Editor, Professor Jan Plass of New York University, Visualizing Geology integrates rich visuals and media with text to direct students’ attention to important information. This approach represents complex processes, organizes related pieces of information, and integrates information into clear representations. Beautifully illustrated, Visualizing Geology shows your students what the discipline is all about—its main concepts and applications— while also instilling an appreciation and excitement about the richness of the subject. 
Visuals, as used throughout this text, are instructional components that display facts, concepts, processes, or principles. They create the foundation for the text and do more than simply support the written or spoken word. The visuals include diagrams, graphs, maps, photographs, illustrations, schematics, animations, and videos. Why should a textbook based on visuals be effective? Research shows that we learn better from integrated text and visuals than from either medium separately. Beginners in a subject benefit most from reading about the topic, attending class, and studying well-designed and integrated visuals. A visual, with good accompanying discussion, really can be worth a thousand words!

Well-designed visuals can also improve the efficiency with which information is processed by a learner. The more effectively we process information, the more likely it is that we will learn. This processing of information takes place in our working memory. As we learn, we integrate new information in our working memory with existing knowledge in our long-term memory.  <...>

Unprecedented advances in geophysics during the 1970s and 1980s have revolutionized our concepts about the Earth. This scientific revolution is largely a consequence of the discovery of seafloor spreading and the subsequent formulation of the theory of plate tectonics. In addition, however, the exploration of the Moon and planets has had a profound impact upon geophysics, as has the development of innovative space technologies, where orbiting satellites have yielded a wealth of new and truly global geophysical data. A vital catalyst for these great advancements in knowledge has been the astonishing growth of computer technology, with the attendant development of powerful new digital techniques for collecting, processing, and analyzing massive quantities of digital data. The overall effect has been to alter foreover not only our understanding of the Earth but also the fundamental way in which we do geophysical research.

The Conference recorded in this volume was held on the occasion of the dedication of the Cecil and Ida Green Building. This new building houses the Center for the Earth Sciences ofthe Massachusetts Institute of Technology, comprising the Departments of Meteorology and of Geology and Geophysics.
The annals of science do not frequently honor a man of industry, as the faculty in earth sciences at M.I.T. have done in choosing to dedicate this volume to Cecil H. Green, geophysicist and alumnus of the Institute.

Geologic setting of the Colorado Plateau ores, by Alice D. Weeks and R. M. Garrels    
Characteristics of the host rock, by Robert A. Cadigan    
Elemental composition of the sandstone-type deposits, by E. M. Shoemaker, A. T. Miesch, W. L. Newman, and L. B. Riley    
Occurrence and chemical character of ground water in the Morrison formation, by David A. Phoenix    
Summary of the ore mineralogy, by Alice D. Weeks, Robert G. Coleman, and Mary E. Thompson    
Behavior of uranium minerals during oxidation, by R. M. Garrels and C. L. Christ    

T.C. BIRKETT, N. MARCHILDON, S. PARADIS and R. GODUE
The Grenville Province to the east of Val d’Or, Quebec: a geological reconnaissance and a possible extension of the Abitibi greenstone belt in the Grenville parautochthonous belt
J. ADAMS, R.J. WETMILLER, J. DRYSDALE and H.S. HASEGAWA The first surface rupture from an earthquake in eastern North America
G.S. LEVESQUE, E.M. CAMERON and A.E. LALONDE
Duality of magmatism along the Kirkland Lake- Larder Lake fault zone, Ontario
J.B. PERCIVAL
Preliminary assessment of wallrock alteration in uranium open-pit mines, Athabasca basin, Saskatchewan: mineralogical and chemical characterization
A.G. GALLEY, B. SALMON and I.R. JONASSON

The 33 independent countries and 13 territories in Latin America (which includes the Caribbean) and Canada covered in this volume encompass an area of 30.5 million square kilometers. The region, which is three times the size of the United States, had a population of 598 million, or 9% of the world total, in 2005 (U.S. Central Intelligence Agency, 2006§'; World Bank, The, 2006§).

This major revision takes place some 25 years after the publication of the first edition. The intervening years have seen great changes in all aspects of the Earth Sciences, including mineralogy. There have been many improved and new techniques for investigating minerals, producing a new body of data and often a better understanding of their nature, properties and relationships. Such changes are evident in each section under which we treat each major mineral.

Since the fourth edition of Geology and Economic Minerals of Canada was published in 1957 our knowledge of the geology of Canada has increased greatly. Heretofore, geological information was meagre for many parts of the country, although detailed but isolated information was available for the mineral producing areas and more accessible regions. A large part of the new knowledge has been gained in the course of systematic geological mapping; by 1957 nearly 75 per cent of Canada was still unmapped geologically whereas in 1968 only 15 per cent remained unmapped at reconnaissance scales. The important element of continuity has been established by the initial mapping, so that it is now possible to assess and present a broad range of data in both geological and tectonic terms of reference. Of the total geological research in Canada, however, only a part has been directed towards the regional type of investigation; continuing studies have been made of many matters of economic and scientific interest, not only by the Geological Survey of Canada but also by provincial organizations, the mining and petroleum industries, consultants, and the universities (see Appendix). <...>