3D Modelling and geophysical data integration: application to SudburyStructure, Ontario, Canada

3D geological models attempt to integrate all sources of geological and geophys ical data into a single

comprehensive model whose purpose is to help identify future poss ible mineral exploration targets. These

models are normally built based on sparse surface outcrops, a few boreholes and sometimes airborne

geophysical surveys to fill the gap. However, often the resulting geophysical models appear inadequate

because of a lack of phys ical property measurements, problems in contact definition and source depth

estimat ion caused by the interference of signals from overlapping sources, non-vertical geological contacts,

and the inherent non-uniqueness of unconstrained geophysical models. A combination of algorithms

involving edge mapping and strike and dip determination of geological contacts by means of using both

geophysical and topographic data represents a first step toward the construction of a set of constraints that

can be utilized for the actual 3D geologica l model. However all these algorithms and models need to be

tested on areas where we…TOBECONT’D…

Faculty Supervisor:

William Morris

Student:

Partner:

Wallbridge

Discipline:

Earth science

Sector:

University:

McMaster University

Program:

Globalink Research Award

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