Measuring Discharge with Acoustic Doppler Current Profilers from a Moving Boat
Measuring Discharge with Acoustic Doppler Current Profilers from a Moving Boat

Author: David S. Mueller

Publisher: CreateSpace

Published: 2014-06-16

Total Pages: 82

ISBN-13: 9781500222666

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The mission of the U.S. Geological Survey (USGS) Water Resources Discipline is to provide the information and understanding needed for wise management of the Nation's water resources. Inherent in this mission is the responsibility of collecting data that accurately describe the physical, chemical, and biological attributes of water systems. These data are used for environmental and resource assessments by the USGS, other government agencies and scientific organizations, and the general public. Reliable and quality-assured data are essential to the credibility and impartiality of the water-resources appraisals carried out by the USGS.

Geological Survey of Canada, Current Research (Online) no. 2000-A5
Geological Survey of Canada, Current Research (Online) no. 2000-A5

Author: Martin De Keijzer

Publisher: Natural Resources Canada

Published: 2000

Total Pages: 12

ISBN-13: 0660179970

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A well-exposed section about 250 metres wide below the high water line of the Jennings River, Teslin Lake map area in northern British Columbia shows part of the Teslin Fault and provides an opportunity to constrain the fault's kinematic history by direct ground observations. This report describes preliminary structural observations of this section of the Teslin Fault, including the rock types involved, mylonitic & ultramylonitic structures, and deformation. Indications of two main episodes of shearing are discussed.

Alluvial Fans
Alluvial Fans

Author: Adrian M. Harvey

Publisher: Geological Society of London

Published: 2005

Total Pages: 258

ISBN-13: 9781862391895

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Alluvial fans are important sedimentary environments. They trap sediment delivered from mountain source areas, and exert an important control on the delivery of sediment to downstream environments, to axial drainages and to sedimentary basins. They preserve a sensitive record of environmental change within the mountain source areas. Alluvial fan geomorphology and sedimentology reflect not only drainage basin size and geology, but change in response to tectonic, climatic and base-level controls. One of the challenges facing alluvial fan research is to resolve how these gross controls are reflected in alluvial fan dynamics and to apply the results of studies of modern fan processes and Quaternary fans to the understanding of sedimentary sequences in the rock record. This volume includes papers based on up-to-date research, and focuses on three themes: alluvial fan processes, dynamics of Quaternary alluvial fans and fan sedimentary sequences. Linking the papers is an emphasis on the controls of fan geomorphology, sedimentology and dynamics. This provides a basis for integration between geomorphological and sedimentological approaches, and an understanding how fluvial systems respond to tectonic, climatic and base-level changes.

Geological Survey of Canada, Current Research (Online) no. 2004-A3
Geological Survey of Canada, Current Research (Online) no. 2004-A3

Author: Yvon Lemieux

Publisher: Natural Resources Canada

Published: 2004

Total Pages: 10

ISBN-13: 0662378180

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This paper presents results of geological mapping conducted in 2003 as part of a project addressing the stratigraphic, structural, and metamorphic relationships along the Columbia River valley in British Columbia. The results relate to the stratigraphy of the Upper Arrow Lake & Trout Lake areas and the structural geology of the Columbia River fault zone. The significance of the stratigraphic succession found along Upper Arrow Lake is discussed in regard to previous theories concerning a crustal-scale displacement along the fault zone.