Analysis and interpretation of regional geophysical data in the Kapuskasing structural zone of the superior province, Canada

An analysis and modelling of the Kapuskasing Structural Zone regional data were made to investigate the geometry and depth extent of this block of uplifted crust. First the analysis of the Bouguer anomaly and its first vertical derivative showed that the Kapuskasing Structural Zone presents high anomaly values that correspond to denser material in a region of uplifted crust relative to the Wawa and Abitibi subprovinces. Using the GM-SYS extension tool from Oasis Montaj, forward 2.5D gravity modelling was completed along five profiles that cross the Kapuskasing Structural Zone. One model was done in a West to East direction in the Groundhog River block, three of the models where done in the same direction but in the Chapleau block, and the last model was done in a South to North direction through the Chapleau block. These models showed that in the Groundhog River block the Kapuskasing block does not present a high depth and that the Ivanhoe Lake fault dips to the northwest and is a thrust fault. On the other hand, the models suggest that the geometry of the Saganash Lake fault is different in the two blocks, being a west-dipping normal fault over the Groundhog River block and southeast dipping reverse fault over the Chapleau block. These geometries follow the proposal of various authors. As a result of this model's analysis it is suggested that after the Kapuskasing uplift a compressive event occur in the Chapleau block and erosion removed part of the Groundhog River block.

• Autores: Cuervo Arciniegas, Sharon Vanessa
• Tipo de recurso: Trabajo de grado de pregrado
• Fecha de publicación: 2020
• Institución: Universidad de los Andes
• Repositorio: Séneca: repositorio Uniandes
• Idioma: eng
• OAI Identifier: oai:repositorio.uniandes.edu.co:1992/51278
• Acceso en línea: http://hdl.handle.net/1992/51278
• Palabra clave: Geofísica; Anomalías gavimútricas; Geociencias
• Rights: openAccess
• License: http://creativecommons.org/licenses/by-nc-sa/4.0/