Abstract
A marked change in crustal thickness is seen at the deformation boundary between the undisturbed Archaean core in the south and reworked Archaean gneiss in the foreland of the Nagssugtoqidian orogen in West Greenland. In addition, intra-crustal boundaries can be tentatively interpreted. This is the first information on crustal structure in the area, which is known for kimberlite, carbonatite and ultramafic lamprophyre occurrences, and diamond exploration.
Highlights
A marked change in crustal thickness is seen at the deformation boundary between the undisturbed Archaean core in the south and reworked Archaean gneiss in the foreland of the Nagssugtoqidian orogen in West Greenland
Between 11 and 27 distant earthquakes were recorded on each of the five stations used for the Receiver Function analysis
Receiver Function (RF) analysis relies on recording naturally occurring earthquakes followed by the isolation of S-waves generated locally at geological boundaries under the recording station from incoming P-waves from distant earthquakes (Ammon 1991)
Summary
A marked change in crustal thickness is seen at the deformation boundary between the undisturbed Archaean core in the south and reworked Archaean gneiss in the foreland of the Nagssugtoqidian orogen in West Greenland. The information is based on two summer seasons of passive seismological data – earthquakes – recorded on five broadband seismological stations placed on an almost 200 km long profile crossing the deformation boundary. Between 11 and 27 distant earthquakes were recorded on each of the five stations used for the Receiver Function analysis.
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
