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Geological Survey of Canada, Current Research (Online) no. 2004-B3

Author : Elizabeth C. Turner

Publisher : Natural Resources Canada

Page : 13 pages

File Size : 25,11 MB

Release : 2004

Category : Geological surveys

ISBN : 0662365992

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Book Description

The Milne Inlet Graben on northern Baffin Island contains unmetamorphosed sedimentary & volcanic rocks. The middle part of the Graben includes the Society Cliffs Formation, which hosts numerous base metal showings and the Nanisivik lead-zinc deposit. Known mineralization in the Graben is predominantly limited to distinct lithofacies & stratigraphic levels of that formation. Understanding the formation's composition, origin, and lateral facies relations may be critical to determining constraints on mineralization. Existing stratigraphic nomenclature for the Formation, based on a type section in the north-west part of the Graben, does not adequately characterize the lateral variations in facies from the north-west to south-east and does not account for the Formation's evolution over time. This paper critically reviews previous research on the Formation, which has focussed on the south-east part of the Graben, and fills in the gaps in knowledge about the Formation's sedimentology & stratigraphy. It describes the distribution & lateral relations of the various lithofacies and interprets the characteristics of the basins in which they were originally deposited.



Geological Survey of Canada, Current Research (Online) no. 2004-B2

Author : Elizabeth C. Turner

Publisher : Natural Resources Canada

Page : 14 pages

File Size : 42,50 MB

Release : 2004

Category : Geological surveys

ISBN : 0662365933

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Book Description

This paper addresses previous interpretations of the origin of planar laminae and breccia networks found in carbonate rocks of the Society Cliffs Formation, which hosts numerous base metal showings and the Nanisivik zinc-lead deposit on northern Baffin Island. Field observations concerning the sedimentology of the Society Cliffs basinal laminite and the types of breccia found in laminite are presented and a new interpretation of the origin of these rocks is offered. Implications of the findings for oceanic chemistry & base metal mineralization are briefly discussed.



Geological Survey of Canada, Current Research (Online) no. 2004-B4

Author : Elizabeth C. Turner

Publisher : Natural Resources Canada

Page : 14 pages

File Size : 16,4 MB

Release : 2004

Category : Geological surveys

ISBN : 0662366859

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Book Description

Dolostone mounds over 200 metres thick and over four kilometres across developed in deep water during uppermost Arctic Bay Formation shale deposition in the north-west Milne Inlet Graben on northern Baffin Island. This paper describes the geometry of hitherto unrecognized mounds that have been identified from field work in five areas: the Saint Georges Society Cliffs near Arctic Bay; beneath the Nanisivik lead-zinc deposit; Red Rock valley; Magda Lake; and Bellevue Mountain. Their lithology, lateral facies relations, and internal composition are described and an interpretation of the origin & growth of the mounds is offered. Finally, implications of mound growth & distribution for the fault-related flow of mineralizing fluids and consequent base-metal deposition are discussed.



Geological Survey of Canada, Current Research (Online) no. 2004-C2

Author : Ross L. Sherlock

Publisher : Natural Resources Canada

Page : 13 pages

File Size : 22,40 MB

Release : 2004

Category : Geological surveys

ISBN : 0662368681

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Book Description

This paper reports the results of a mapping program in the vicinity of the Boston gold deposit near Hope Bay, south-west Nunavut. It first reviews the regional geology, the granitoid rocks of the Hope Bay volcanic belt, and their contact relationships with the belt. It then focusses on the geology of the deposit area, with descriptions of the rock types, the geologic structures, and the gold mineralization. Finally, implications of the findings for mineralization in other areas of the Hope Bay belt are discussed.



Geological Survey of Canada, Current Research (Online) no. 2005-B3

Author : Lynda A. Dredge

Publisher : Natural Resources Canada

Page : 7 pages

File Size : 13,12 MB

Release : 2005

Category : Geology

ISBN : 0662403886

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Book Description

This report briefly describes the nature, extent, and age of marine deposits near the head of Wager Bay on the west side of Hudson Bay, Nunavut. The main focus is on determination of the marine limit, or the highest elevation reached by the post-glacial sea. The elevation of the marine limit yields information about the extent of inundation by post-glacial seas, the amount of post-glacial crustal deformation, and the elevation below which the geochemical composition of glacial deposits may have been altered by marine processes or by mixing of glacial materials with marine sediments. Marine limit positions were determined by recording the elevations of: raised deltas that indicate where meltwater streams & overflow channels from glacial lakes fed in to high-level water bodies; ice-contact deltas; and trimlines where the uppermost limit of wave erosion of glacial deposits is prominent.







Mineral Deposits of Canada

Author : Wayne David Goodfellow

Publisher :

Page : 1080 pages

File Size : 25,73 MB

Release : 2007

Category : Science

ISBN :

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Book Description



Measuring Discharge with Acoustic Doppler Current Profilers from a Moving Boat

Author : David S. Mueller

Publisher : CreateSpace

Page : 82 pages

File Size : 29,88 MB

Release : 2014-06-16

Category : Technology & Engineering

ISBN : 9781500222666

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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.



Urban Stormwater Management in the United States

Author : National Research Council

Publisher : National Academies Press

Page : 611 pages

File Size : 46,76 MB

Release : 2009-03-17

Category : Nature

ISBN : 0309125391

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Book Description

The rapid conversion of land to urban and suburban areas has profoundly altered how water flows during and following storm events, putting higher volumes of water and more pollutants into the nation's rivers, lakes, and estuaries. These changes have degraded water quality and habitat in virtually every urban stream system. The Clean Water Act regulatory framework for addressing sewage and industrial wastes is not well suited to the more difficult problem of stormwater discharges. This book calls for an entirely new permitting structure that would put authority and accountability for stormwater discharges at the municipal level. A number of additional actions, such as conserving natural areas, reducing hard surface cover (e.g., roads and parking lots), and retrofitting urban areas with features that hold and treat stormwater, are recommended.