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Geological Survey of Canada, Current Research (Online) no. 2000-A2
The use of static global positioning system (GPS) equipment for accurate horizontal & vertical positioning in field geology operations at high latitudes is made difficult by the need to set up & operate a GPS reference station and limitations on the distance between the reference station & field GPS due to errors introduced by the ionosphere. Dual-frequency GPS receivers have the potential to eliminate these problems since they can eliminate ionospheric errors and thereby increase baseline lengths, thus potentially permitting the use of existing GPS reference stations. This paper describes the use of a dual-frequency receiver for establishing benchmarks along the Yukon River as a field trial of this technology. Field methods and post-processing of the data using GPS data from permanent receiving stations are described, and baseline results are presented. The derived benchmarks will be applied to a survey of fill thickness below the Yukon River.
Lost World
For decades the issue seemed moot. The first settlers, we were told, were big-game hunters who arrived from Asia at the end of the Ice Age some 12,000 years ago, crossing a land bridge at the Bering Strait and migrating south through an ice-free passage between two great glaciers blanketing the continent. But after years of sifting through data from diverse and surprising sources, the maverick scientists whose stories Lost World follows have found evidence to overthrow the "big-game hunter" scenario and reach a new and startling and controversial conclusion: The first people to arrive in North America did not come overland -- they came along the coast by water. In this groundbreaking book, a...
Alberta’s Lower Athabasca Basin
Over the past two decades, the oil sands region of northeastern Alberta has been the site of unprecedented levels of development. Alberta's Lower Athabasca Basin tells a fascinating story of how a catastrophic ice age flood left behind a unique landscape in the Lower Athabasca Basin, one that made deposits of bitumen available for surface mining. Less well known is the discovery that this flood also produced an environment that supported perhaps the most intensive use of boreal forest resources by prehistoric Native people yet recognized in Canada. Studies undertaken to meet the conservation requirements of the Alberta Historical Resources Act have yielded a rich and varied record of prehist...
Current Research
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Stones, Bones, and Profiles
Stones, Bones, and Profiles addresses key and cutting-edge research of three pillars of hunter-gatherer archaeology. Stones and bones—flaked stone tools and the bones of the prey animals—are the objects most commonly recovered from hunter-gatherer archaeological sites, and profiles represent the geologic context of the archeological record. Together they constitute the foundations of much of early archaeology, from the appearance of the earliest humans to the advent of the Neolithic. The volume is divided into three sections: Peopling of North America and Paleoindians, Geoarchaeology, and Bison Bone Bed Studies. The first section dissects established theories about the Paleoindians, incl...
