Author: D. Calvin Campbell
Publisher: Natural Resources Canada
ISBN: 0660180510
Category :
Languages : en
Pages : 9
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Book Description
This paper examines a small area west of Verrill Canyon on the Scotian Slope to address whether sedimentological and geomechanical features of piston cores would explain the localized occurrence of sediment failures. The seabed in the area was divided into zones of disturbed, undisturbed, and erosional areas, and six continuous acoustic reflectors were traced throughout the area from high-resolution acoustic records. Nine sediment cores, providing a composite stratigraphy of the acoustic section, are described and the relationship of the failure horizons to core lithology and physical properties is discussed.
Author:
Publisher: Natural Resources Canada
ISBN: 0662316789
Category :
Languages : en
Pages : 14
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Book Description
Author: Martin De Keijzer
Publisher: Natural Resources Canada
ISBN: 0660179970
Category : Faults (Geology)
Languages : en
Pages : 12
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Book Description
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.
Author: L. C. Struik
Publisher: Natural Resources Canada
ISBN: 0660180022
Category :
Languages : en
Pages : 10
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Book Description
The final year of the Nechako NATMAP project to study the geology of central British Columbia was used to research information collected in the field & laboratory, and to compile & document the study results. This article includes a review of upcoming publications & other products, by type of product: maps, journal articles, conference presentations, and computer products, as well as ongoing research on petrology, palaeontology, terrane characterization, tectonics & structure, and Quaternary geology.
Author: Renée Hetherington
Publisher: Natural Resources Canada
ISBN: 0660180006
Category :
Languages : en
Pages : 7
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Book Description
This research focuses on the possibility of a coastal migration and/or colonization route via the Queen Charlotte Islands during the period 15,000-8,500 years before present. It assesses two aspects of the changing environment in the Islands during this period: sea level change and available edible biomass for early human populations. Potential food sources of an early coastal migrating population would likely include intertidal edible molluscs. The research examines high-stand deposit locations ranging from 1 to 18 metres above sea level for evidence of edible mollusc shells. Dating of the samples collected will provide a record of high-stand elevations across the Islands, thereby providing a data set with which to model isostatic sea level response on the British Columbia continental margin.
Author: C. D. Pint
Publisher: Natural Resources Canada
ISBN: 0660180030
Category :
Languages : en
Pages : 11
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Book Description
Describes a geologic mapping project in the area of the Nechako reservoir in central interior British Columbia. Includes description of regional geology, stratigraphic units, volcanic & plutonic rocks, and geologic structure. Evidence for two periods of deformation of Hazelton Group rocks in the study area is discussed.
Author: K. J. Schulz
Publisher: Geological Survey
ISBN: 9781411339910
Category : Business & Economics
Languages : en
Pages : 868
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Book Description
As the importance and dependence of specific mineral commodities increase, so does concern about their supply. The United States is currently 100 percent reliant on foreign sources for 20 mineral commodities and imports the majority of its supply of more than 50 mineral commodities. Mineral commodities that have important uses and face potential supply disruption are critical to American economic and national security. However, a mineral commodity's importance and the nature of its supply chain can change with time; a mineral commodity that may not have been considered critical 25 years ago may be critical today, and one considered critical today may not be so in the future. The U.S. Geological Survey has produced this volume to describe a select group of mineral commodities currently critical to our economy and security. For each mineral commodity covered, the authors provide a comprehensive look at (1) the commodity's use; (2) the geology and global distribution of the mineral deposit types that account for the present and possible future supply of the commodity; (3) the current status of production, reserves, and resources in the United States and globally; and (4) environmental considerations related to the commodity's production from different types of mineral deposits. The volume describes U.S. critical mineral resources in a global context, for no country can be self-sufficient for all its mineral commodity needs, and the United States will always rely on global mineral commodity supply chains. This volume provides the scientific understanding of critical mineral resources required for informed decisionmaking by those responsible for ensuring that the United States has a secure and sustainable supply of mineral commodities.
Author: Peter H. Stauffer
Publisher:
ISBN:
Category : Earthquake hazard analysis
Languages : en
Pages : 8
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Book Description
Author:
Publisher: Natural Resources Canada
ISBN: 066018026X
Category :
Languages : en
Pages : 12
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Book Description
Author: Phil C. Sirles
Publisher: Transportation Research Board
ISBN: 0309097649
Category : Geological surveys
Languages : en
Pages : 117
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Book Description
Introduction -- Geophysical methods -- Information sources and general responses -- Agency practice-Methods and applications -- Agency practice-budgeting, costs, and contracting -- Agency project experience -- Conclusions and future research needs -- Glossary -- References -- Topical bibliography -- Appendices.
