The fascinating world of Nunavut's diverse rocks and minerals is vividly presented in this richly visual, informative book. Through beautiful photographs and a broad range of information—each account includes an absorbing “Did You Know?” section with facts—readers will learn about the appearances, traditional and modern uses, and environments of eastern Arctic rocks and minerals. The book covers everything from diamond to granite, from the most precious to the most common stone. The distinct geology presented in this guide will show readers that, far from a barren land of ice and snow, Nunavut hosts a vibrant environment.
Surface Deposits, Glacial History, Environmental Geology, and Till Geochemistry
Author: L. A. Dredge
This report results from an investigation of the Quaternary geology & geomorphology of the south half of Melville Peninsula, Nunavut. The purpose of the investigation was to map the area systematically in order to determine the distribution, character, & origin of surface materials and to reconstruct the Quaternary history of the area. The first part provides background information on previous research, bedrock geology, and physiography of the area. The next part describes the nature & distribution of surficial materials & landforms, including information on their physical properties, texture, & composition along with interpretation of their mode of formation. A subsequent section on present geomorphic processes addresses topics of particular interest to environmental concerns & land management. The final section emphasizes those elements that concern mineral exploration, specifically the provenance of till, directions & distances of glacial transport, concentrations of elements in till, and their relationship to bedrock geology.
The areas described in this report encompass several northeast-trending Precambrian supracrustal belts set in a granitoid terrane of the Churchill structural province near the base of the Boothia Peninsula, Nunavut. After an introduction on the study area and previous research, descriptions are provided of the area's Archean granitoid complex, Archean and Proterozoic supracrustal rocks, their lithology, contact relations, age & correlation; associated intrusions (pegmatite, diabase dykes); metamorphism; structural geology; and mineral occurrences worthy of further exploration. The appendix contains tables of results of mineral & rock analyses.
"This report identifies 83 key terrestrial habitat sites for migratory birds in the Northwest Territories and Nunavut. These sites support at least 1% of the Canadian population of at least one migratory bird species (or, in some cases, subspecies). Sites also include marine and freshwater habitats where the value of the terrestrial habitat is intimately linked to the presence of aquatic habitats. Data for the identification of sites were drawn from existing published and unpublished reports and personal communications. In this updating of key terrestrial habitat sites in the Northwest Territories and Nunavut, eight new sites have been added and two have been removed. Four sites listed in the previous edition have been combined under a single location. Many of the sites recognized in earlier listings have been revised, some quite substantially. Eighteen of the key terrestrial habitat sites overlap with existing Migratory Bird Sanctuaries, and two sites overlap with National Wildlife Areas. This report describes key terrestrial habitat areas that are essential to the welfare of various migratory bird species in Canada. It serves as a statement of the interest of Environment Canada's Canadian Wildlife Service in lands where special wildlife conservation measures may be required, and it is offered as a guide to the conservation efforts of other agencies having interests in the Northwest Territories and Nunavut."--Abstract.
"Classifications of ore deposits provide essential frameworks for designing exploration strategies, evaluating prospects, and performing resource assessments of selected areas. This paper proposes a geological classification of lode gold deposits, based largely on the nature of the ore and on the geological settings of the deposits. Sixteen common types of bedrock gold deposits are distinguished and their main geological attributes summarized. They do not correspond to an equal number of genetic types: many of these deposit types represent different components of larger hydrothermal systems and are genetically related. An important emerging point is that the majority of lode gold deposit types identified here are represented by at least one large example (>100 t Au); the search for large gold deposits must therefore rely on a multiplicity of models."--Abstract.