Late Cenozoic History Of The Interior Basins Of Alaska And The Yukon

Proceedings of a cooperative workshop between earth scientists from Canada and the United States of America.

This book is the second of three volumes in which the recent knowledge of the extent and chronology of Quaternary glaciations has been compiled on a global scale. This information is seen as a fundamental requirement, not only for the glacial community, but for the wider user-community of general Quaternary workers. In particular the need for accurate ice-front positions is a basic requirement for the rapidly growing field of palaeoclimate modelling. In order to provide the information for the widest-possible range of users in the most accessible form, a series of digital maps was prepared. The glacial limits were mapped in ArcView, the Geographical Information System (GIS) used by the work group. Included with the publication is a CD with digital maps, showing glacial limits, end moraines, ice-dammed lakes, glacier-induced drainage diversions and the locations of key sections through which the glacial limits are defined and dated. The last deglaciation is also shown in 500 year time-steps. The digital maps in this volume cover the USA and Canada and include Greenland and Hawaii. Both overview maps and more detailed maps at a scale 1: 1,000,000 are provided. Also available:Part I: Europe, ISBN 0-444-51462-7Part III: South America, Asia, Africa, Australia, Antarctica, ISBN 0-444-51593-3

The ancient, boreal Eva forest forms the centerpiece in this evaluation of the time and nature of the enfironment during an interglaciation. This title brings together results of exmaination of hundreds of loess exposures, when loess faces were still frozen in gold-mining excavation, and data on the character and age of the deposits from fission-track dating of tphra, paleomagnetism of the loess, thermoluminescnece dating of loess, and radiocarbon dating by liquid scintillation. Dendrochronology studies of trees are compared to those from trees of the modern boreal forest.