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Metal Earth Geophysics: Gravity & Magnetics


Project Information


Project Title:

The gravity and magnetics subproject at Metal Earth.  

Research Location:


Research Team: 

Esmaeil Eshaghi, Research Associate/PDF Laurentian University.  

Amir Maleki, MSc Candidate Laurentian University.

William McNiece, MSc Candidate Laurentian University. 

Fabiano Justina, MSc Candidate Laurentian University.


Project Status:



Dr. Richard Smith,

Professor of Geophysics, 

Mineral Exploration Research Centre,

Laurentian University 

Academic Collaborators:

David Snyder, Seismic interpretation, Geological Survey of Canada, Laurentian University

Lucie Mathieu, Geology of Chibougamau-  University of Québec in Chicoutimi (UQAC)
Pierre Bedeaux, Geology of Chibougamau- University of Québec in Chicoutimi (UQAC)


Scope of Project:

The purpose of the geophysical work involving non-seismic / MT methods is to collect and compile geophysical and petrophysical data along, and around, the Metal Earth traverses. Questions being addressed are:

  1. Can a petrophysical section of the Metal Earth traverses be built, that is consistent with the known geology (surface mapping and any drill holes) and the geophysical data, including the seismic data?
  2. If this section can be built, does it provide indicators about the crustal structures and how they extend to the Earth’s mantle?
  3. Do these structures reveal a potential source of metals to endow mineral deposits in critical areas of the traverses?

The physical properties data includes magnetic susceptibility and density data from surface exposures. These data will be collected by the Metal Earth geophysical and geological mapping teams and compiled data will come from other sources including the Ontario Geological Survey (OGS), the Geological Survey of Canada (GSC), the Minnesota Geological Survey (MGS), and the Footprint project databases.

The geophysical data includes magnetic data, available from the OGS, Ministry of Natural Resources, Quebec (MERN), the GSC and some companies. The gravity data will be collected by the project and incorporated with regional data available from the GSC.

The magnetic susceptibility data will be collected at each outcrop by the transect mapping teams. In order to provide robust statistics, 10 measurements will be taken on each major lithology evident on each outcrop, provided the lithology present is large enough to allow 10 distinct measurements. The 10 measurements give an idea of how variable the susceptibility is spatially within the lithology. For example, a gneiss is expected to have considerable variation.



Transect Research Projects

Project Title:


Gravity data acquisition and potential-field data modelling along Metal Earth’s Chibougamau transect using geophysical and geological constraints.


Amir Maleki, MSc student, Laurentian University


Comparing magnetic susceptibilities derived from aeromagnetic data and outcrop scale measurements in the western Abitibi greenstone belt.


William McNeice, MSc student, Laurentian University


Potential-field data modelling along Metal Earth’s Matheson transect using geophysical and geological constraints.


Fabiano Della Justina, MSc student, Laurentian University



Related Documents/News:

Ontario Geological Survey Summary of Field Work 2018

Metal Earth GeoHub - Geophysics Related Documents