From sedimentary basin to volcanic passive margin: the central west Greenland case example

Introduction

The increased availability of high-quality seismic and potential field data has shown that extensional processes can lead to complex crustal configurations, depending on lithospheric composition, thermal structure and heat transfer, far-field stresses, extension rate and duration, mantle flow, and structural inheritance. In this context, we propose to study the evolution of the central west Greenland margin to understand the control of different factors on margin structure.

The central west Greenland margin is located to the north of the Ungava transform zone, located in the Davis Strait transform margin segment, linking the Labrador Sea to Baffin Bay margin segments. The area is situated on the junction of two Precambrian orogenic belts affecting the basement (Figure 1). Its structural and thermal evolution is made complex by the large mantle melting occurring during the Paleogene and the consecutive development of a volcanic passive margin.

 

Aim of the study

  • Understand the early sedimentary evolution of the area
  • Better constraints of the transition from the sedimentary basin to the volcanic passive margin
  • Understand the kinematic evolution of the area.
  • Better constraints on the effect of the Ungava transform system and structural inheritance on the finite margin structure.

Data and Methods

  • This study will be based on the interpretation of available seismic data in the area, combined with previous field observation.
  • Magnetic and gravimetric data could be used to establish an integrated seismic-gravity and magnetic interpretation.      

Learning outcomes

  • Factors controlling the structure and evolution of the passive margin
  • 2D seismic interpretation
Image may contain: Map, Ecoregion.
Figure 1. Geological map of the NW Atlantic showing the different margin segments and sedimentary basins of the area.
Click here for a bigger version of the picture. 

 

Published Sep. 17, 2020 9:42 AM - Last modified Sep. 17, 2020 9:42 AM

Scope (credits)

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