2 edition of Electrical Conductivity Structure in Western Canada and Petrological Interpretation. found in the catalog.
Electrical Conductivity Structure in Western Canada and Petrological Interpretation.
Canada. Dept. of Energy, Mines and Resources. Observatories Branch.
|Series||Canada Dominion Observatory Contributions -- 286, Canadian Contribution to the International Upper Mantle Project -- 198|
INTERPRETING THE ELECTRICAL CONDUCTIVITY RESPONSE OF REGOLITH MATERIALS IN VARIOUS GEOMORPHIC SETTINGS ACROSS AUSTRALIA Kok P. Tan1, Tim, J. Munday2, Heike E.J. Apps1 and Larysa Halas1 1CRC LEME, Geoscience Australia, ACT 2CRC LEME CSIRO Exploration and Mining, WA INTRODUCTIONAuthor: Kok P. Tan, J. Munday, Larysa Halas. The interpretation is intended primarily as a check on the validity of the use of magnetotelluric (MT) data as ‘calibration’ for the largescale GDS mapping. The combined MT‐GDS models confirm the existence of a finite conductive layer (resistivity of the order of 5 ohm m) in the western regions, starting at a depth of 10–15 km and Cited by:
Title: Magnetotelluric investigation of Pemberton area, British Columbia: Creator: Sule, Peter O: Date Issued: Description: The magnetotelluric method has been used in the determination of the electrical conductivity structure of the Pemberton area of British Columbia: Meager Mountain, which is at the junction of the Garibaldi volcanic belt and the Pemberton volcanic belt, is the focus. Seafloor magnetotelluric (MT) experiments were recently conducted in two areas of the northwestern Pacific to investigate the nature of the old oceanic upper mantle. The areas are far from any tectonic activity, and “normal” mantle structure is therefore expected. The data were carefully analyzed to reduce the effects of coastlines and seafloor topographic changes, which are significant Cited by: 9.
Interpretation of electrical resistivity measurements for assessing hydrocarbon saturation in mixed-wet and hydrocarbon-wet rocks often requires extensive recalibrations of resistivity models. In these conventional resistivity models, the impact of wettability is not reliably : Chelsea Newgord, Artur Posenato Garcia, Ameneh Rostami, Zoya Heidari. Summary. The first magnetometer array study in Australia was in operation in the second half of across the central southern part of the continent. Twenty-Cited by:
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Not Available adshelp[at] The ADS is operated by the Smithsonian Astrophysical Observatory under NASA Cooperative Agreement NNX16AC86ACited by: Geomagnetic induction techniques have been used to study the structure of the crust and upper mantle in western Canada.
Geomagnetic depth-sounding (GDS) has been used primarily for mapping, and magnetotellurics (MT) for quantitative interpretation. Self-consistent models of electrical conductivity structure have been derived from the combined MT/GDS data. The conductivity structure models.
The results demonstrate that phlogopite can have unusually high conductivity, > S/m above ~ °C and ~1 S/m at ~ °C, significant electrical anisotropy, by a factor of >6 above ~ °C, and large activation enthalpies, ~– kJ/mol along different by: Electrical Conductivity Structure in Western Canada and Petrological Interpretation B.
CANER Volume 22 Issue Pages ELECTRICAL CONDUCTIVITY STRUCTURE OF THE LOWER CRUST AND UPPER MANTLE IN WESTERN CANADA. by BERNARD CANER " Universit, oyf Alberta, IUniversit of British y Columbia4 A THESI SUBMITTES D IN PARTIAL FULFILMENT O F THE REQUIREMENTS FOR THE DEGREE OF DOCTOR OF PHILOSOPHY in the Department of GEOPHYSICS.
Electrical conductivity structure of the Purcell Anticlinorium in southeast British Columbia and northwest Montana Article (PDF Available) in Canadian Journal of Earth Sciences 32(10) Digital soil mapping (DSM) tools, for example apparent soil electrical conductivity, corrected to 25°C (EC25), and digital elevation models, try to explain the spatial variation in soil type, soil properties (e.g.
clay content), site and crop that are determined by landscape characteristics such as terrain, geology and geomorphology.
Magnetotelluric (MT) data can image the electrical resistivity of the entire lithospheric column and are therefore one of the most important data sources for understanding the structure, composition and evolution of the lithosphere.
However, interpretations of MT data from stable lithosphere are often ambiguous. Recent results from mineral physics studies show that, from the mid-crust to the Cited by: Electrical conductivity of the crust of the Siberian platform.
Phys. Earth Planet. Inter., Interpretation of magnetotelluric soundings on the Siberian platform suggests the presence of anomalously high conductivities in the lower crust around a depth of 35 by: 8.
Abstract. The mantle is the largest of the concentric regions that constitute the Earth’s interior. Lying beneath an oceanic or continental crust which may be 6 to 75 (or more) km thick, the mantle region extends to the boundary with the Earth’s liquid by: In Canada, the discontinuity runs at, or within 50 km to the west, of the Rocky Mountain Trench .
Magneto-tellurics (MT) has been used for quantitative interpretation; the results indicate that the zone of high electrical conductivity extends to within km if the surface in the western region [4,5].Cited by: Maps of Fourier transform coefficients assist qualitative interpretation but differ from other geophysical anomaly maps in combining the source field and the response of the Earth.
For quantitative interpretation the normal (source) and anomalous (response) fields must be separated. Methods of separation and their limitations are by: Anomalies in Daily Variation Magnetic Fields and Structure Under North-western United States and South-western Canada* P.
Camfield Division of Geomagnetism, Earth Physics Branch, Department of Energy, Mines and Resources, Ottawa, Canada K1A 0E4Cited by: Mapping of the regional electrical conductivity structure in western Canada has been carried out with a network of geomagnetic recording stations that cover the frequency range 10 −5 ‐ 2 × 10 −3 Hz (24‐hour to 8‐min periods).
Two main regions have been defined, based mainly on the amplitudes of the vertical component (Z) variations in the frequency range 10 −4 –10 −3 by: Introduction In the Earth crust electrical conductivity anomalies (CA) have been measured over different depth intervals.
An apparent scatter in the param- eters of the CA-s (depth, conductivity, conduc- tance) encourages analysis of the effects that can play a role in the generation of the by: Summary.
Processing and interpretation of magnetotelluric data, recorded as part of the LITHOPROBE Southern Cordillera transect studies, across the boundary of the Intermontane and Omineca morphogeological belts reveals: (a) high electrical conductivity in the middle and lower parts of the crust everywhere, and (b) a depth dependency of geoelectric by: Pană D.I.
(): Precambrian basement of the Western Canada Sedimentary Basin in northern Alberta; Alberta Energy and Utilities Board, EUB/AGS Earth Sciences Report Published February by: Alberta Energy and Utilities Board Alberta Geological Survey 4th Floor, Twin Atria Building – 98th Avenue Edmonton, Alberta T6B 2X3 Canada.
An integrated approach using both geomagnetic depth-sounding (GDS) and magneto-tellurics (MT) is applied to the determination of the electrical conductivity structure in western Canada; 42 GDS.
This work formed part of a continuing study of upper mantle conductive and thermal structure under the western United States. Magnetograms and maps of Fourier spectral components of two substorms are used to describe conductive structures in the upper mantle and by: Mapping of the regional electrical conductivity structure in western Canada has been carried out with a network of geomagnetic recording stations that cover the frequency range - 2 × Hz.
PLASTIC FLOW MECHANISMS AND RHEOLOGICAL PROPERTIES OF THE EARTH'S MANTLE G. Ranalli Department of Geology, Carleton University;, Ottawa, Canada K1S 5B6 ABSTRACT Creep of silicate polycrystals is governed by the mobility of lattice : G.
Ranalli.Laboratory studies on the electrical conductivity of granite as a function of temperature and water vapour pressure show that the electrical conductivity increases sharply with increase of water pressure Cited by: Ferguson IJ, Jones AG, Sheng Y, Wu X, Shiozaki I. Geoelectric response and crustal electrical-conductivity structure of the Flin Flon Belt, Trans-Hudson Orogen, Canada.
Canadian Journal of Earth Sciences 36 (11): Link, ISI, Google Scholar. AbstractCited by: