The Eurekan orogeny came to an end when seafloor spreading in the
Labrador Sea ceased about 33 million years ago during the
Oligoceneepoch.[6] Erosion of the
orogenic mountains followed, resulting in the deposition of undeformed sediment above the eroded remnants of deformed rock. At least some of the coarse clastic sediments in the Beaufort Formation were derived from the Grantland Mountains and Princess Margaret Range, suggesting that these ranges had higher elevations during the
Late Miocene or
Early Pliocene times.[4]
References
^Gion, Austin M.; Williams, Simon E.; Müller, R. Dietmar (2016). "A reconstruction of the Eurekan Orogeny incorporating deformation constraints". Tectonics.
American Geophysical Union: 304.
ISSN1944-9194.
^Trettin, H. P. (1989). "Stratigraphic-Structural Framework and Outline of Geological History". Open File 2139.
Geological Survey of Canada: 8.
^
abTrettin, H.P. (1991). "Middle and Late Tertiary Tectonic and Physiographic Developments". Geology of the Innuitian Orogen and Arctic Platform of Canada and Greenland. Vol. E.
Geological Survey of Canada. p. 493.
ISBN0-660-13131-5.
^Funck, Thomas; Jackson, H. Ruth; Reid, Ian D.; Dehler, Sonya A. (2002). Refraction seismic studies in Nares Strait between Ellesmere Island, Nunavut, and northwest Greenland.
Natural Resources Canada. p. 2.
ISBN0-662-32466-8.
^Wilson, R. W.; Houseman, G. A.; McCaffrey, K. J. W.; Doré, A. G.; Buiter, S. J. H. (2019). Fifty Years of the Wilson Cycle Concept in Plate Tectonics.
Geological Society of London. p. 388.
ISBN978-1-78620-383-0.