Geological Survey of Canada, Current Research (Online) no. 2000-F5

Geological Survey of Canada, Current Research (Online) no. 2000-F5 PDF Author: Anthony Davidson
Publisher: Natural Resources Canada
ISBN: 0660182319
Category :
Languages : en
Pages : 11

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Book Description
Presents a geochronological and geochemical study of the Barbers Lake and McLean plutons in the Grenville Province of Ontario, including comparisons of whole-rock analyses of these plutons with the Elphin and Leggat Lake plutons. The assignment of various plutons in the study area to one of several age groups is discussed.

Geological Survey of Canada, Current Research (Online) no. 2000-F5

Geological Survey of Canada, Current Research (Online) no. 2000-F5 PDF Author: Anthony Davidson
Publisher: Natural Resources Canada
ISBN: 0660182319
Category :
Languages : en
Pages : 11

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Book Description
Presents a geochronological and geochemical study of the Barbers Lake and McLean plutons in the Grenville Province of Ontario, including comparisons of whole-rock analyses of these plutons with the Elphin and Leggat Lake plutons. The assignment of various plutons in the study area to one of several age groups is discussed.

Geological Survey of Canada, Current Research (Online) no. 2000-F4

Geological Survey of Canada, Current Research (Online) no. 2000-F4 PDF Author: Anthony Davidson
Publisher: Natural Resources Canada
ISBN: 0660182300
Category : Igneous rocks
Languages : en
Pages : 17

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Book Description
Presents geochronological age determinations of zircons from eight plutons in the Grenville Province, Ontario (Oso and Mountain Grove plutons in the Sharbot Lake domain; Silver Lake & Bennett Bay plutons and Fall River mangeritic augen gneiss associated with the Maberly shear zone; North Crosby & Pike Lake plutons in the north-west sheared part of the Frontenac terrane; and the Beales Mills pluton in the interior of the Frontenac terrane). The results are used to propose a re-interpretation of the tectonics of the Frontenac suite and the origin of the magmas responsible.

Geological Survey of Canada, Current Research (Online) no. 2000-F6

Geological Survey of Canada, Current Research (Online) no. 2000-F6 PDF Author: T. Praamsma
Publisher: Natural Resources Canada
ISBN: 0660182327
Category :
Languages : en
Pages : 10

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Book Description
This study examines aspects of the geological evolution of the Sharbot Lake domain and compares it with that of neighbouring domains & terranes in the Central metasedimentary belt, Grenville Province, Ontario. The study reports uranium-lead zircon & titanite geochronological ages for a granodiorite phase of the Pakenham intrusion from the northern part of the Sharbot Lake domain. The new data expand the known range of magmatism in this part of the belt, elucidate the early tectonic evolution of the domain, and constrain the timing of overprinting metamorphism. Possible links between the Pakenham structure and the Wolf Grove structure to the south-east are also discussed.

Geological Survey of Canada, Current Research (Online) no. 2002-F5

Geological Survey of Canada, Current Research (Online) no. 2002-F5 PDF Author:
Publisher: Natural Resources Canada
ISBN: 0662324420
Category : Geology, Stratigraphic
Languages : en
Pages : 10

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Book Description


Geohydrology, Geochemistry, and Ground-water Simulation-optimization of the Central and West Coast Basins, Los Angeles County, California

Geohydrology, Geochemistry, and Ground-water Simulation-optimization of the Central and West Coast Basins, Los Angeles County, California PDF Author:
Publisher:
ISBN:
Category : Electronic government information
Languages : en
Pages : 208

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Book Description


Bibliographic Guide to Government Publications 2000

Bibliographic Guide to Government Publications 2000 PDF Author: Gale Group
Publisher: Macmillan Reference USA
ISBN: 9780783892108
Category : Literary Criticism
Languages : en
Pages : 898

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Book Description


Measuring Discharge with Acoustic Doppler Current Profilers from a Moving Boat

Measuring Discharge with Acoustic Doppler Current Profilers from a Moving Boat PDF Author: David S. Mueller
Publisher: CreateSpace
ISBN: 9781500222666
Category : Technology & Engineering
Languages : en
Pages : 82

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Book Description
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 PDF 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.

Geological Survey of Canada, Current Research (Online) no. 2000-A10

Geological Survey of Canada, Current Research (Online) no. 2000-A10 PDF 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.

Rock Fractures and Fluid Flow

Rock Fractures and Fluid Flow PDF Author: Committee on Fracture Characterization and Fluid Flow
Publisher: National Academies Press
ISBN: 0309563488
Category : Science
Languages : en
Pages : 568

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Book Description
Scientific understanding of fluid flow in rock fractures--a process underlying contemporary earth science problems from the search for petroleum to the controversy over nuclear waste storage--has grown significantly in the past 20 years. This volume presents a comprehensive report on the state of the field, with an interdisciplinary viewpoint, case studies of fracture sites, illustrations, conclusions, and research recommendations. The book addresses these questions: How can fractures that are significant hydraulic conductors be identified, located, and characterized? How do flow and transport occur in fracture systems? How can changes in fracture systems be predicted and controlled? Among other topics, the committee provides a geomechanical understanding of fracture formation, reviews methods for detecting subsurface fractures, and looks at the use of hydraulic and tracer tests to investigate fluid flow. The volume examines the state of conceptual and mathematical modeling, and it provides a useful framework for understanding the complexity of fracture changes that occur during fluid pumping and other engineering practices. With a practical and multidisciplinary outlook, this volume will be welcomed by geologists, petroleum geologists, geoengineers, geophysicists, hydrologists, researchers, educators and students in these fields, and public officials involved in geological projects.