The Grenville Province, covering much of upstate New York, southeastern Ontario, and southern Québec, has been the source of many amazing mineral specimens. Its crystalline rocks are more than a billion years old, and unlike most mineralogical heritage sites, new discoveries are the rule rather than the exception.The province also contains deposits of commercially important minerals such as iron, zinc, talc, garnet, apatite, and mica. More than 400 photographs highlight specimens from the world-renowned collections of the Canadian Museum of Nature, the New York State Museum, and selected private collections. This pleasurable journey includes sections devoted to colorful gemstones and fluorescent minerals, and explains the mineralogical, geological, and historical significance of these minerals.

"The Appalachians constitute one of Earth's major tectonic features and have served as a springboard for innovative geologic thought for more than 170 years. This volume contains 36 original papers reporting the results of research performed throughout nearly the entire length and breadth of the Appalachian region, including all major provinces and geographical areas. Memoir 206 was designed to commemorate the (near-)fortieth anniversary of the publication of the classic Studies of Appalachian Geology volumes that appeared just prior to the application of plate tectonic concepts to the region. Contributions concerning structural evolution, sedimentation, stratigraphy, magmatic processes, metamorphism, tectonics, and terrane accretion illustrate the wide range of ongoing research in the area and collectively serve to mark the considerable progress in scientific thought that has occurred during the past four decades."--pub. desc.

This volume contains a description of the geology and mineral deposits of the Superior Province of the Canadian Shield, an overview of Grenville Province geology, and a synopsis of Precambrian fossil occurrences in North America. Six large plates include a geological map of Canada, geological map of the Grenville Province, lithotectonic map of the Superior Province, Archean mineral deposit map of the Superior Province, and more.