Surficial geology and seabed features of Flemish Cap, offshore Island of Newfoundland, Newfoundland and Labrador / L. Broom and G.D.M. Cameron. : M183-2/8827E-PDF

"Improved bathymetric data along with legacy seabed samples and seismic profile data have allowed for enhanced understanding of the surficial geology and seafloor morphology of Flemish Cap. Three surficial geology units are mapped: bedrock, till, and patchy sand and gravel cover. The bedrock units include a Neoproterozoic granite and granodiorite unit in the center of Flemish Cap, which is overlain by Cretaceous to Cenozoic sedimentary rocks. These units have then been overlain by till. A patchy sand and gravel deposit covers most of Flemish Cap, and was deposited mostly through ice-rafted debris and redistributed by the Labrador and the North Atlantic Currents. The improved bathymetric data has revealed mega-scale glacial lineations (MSGLs) incised mostly in soft bedrock or till and eroded bedrock lineations located on eastern and southern Flemish Cap. A glacial moraine has been identified for the first time on the north side of Flemish Cap. These glacial features are evidence of a late Quaternary glacial ice cap on Flemish Cap"--Summary.

Lien permanent pour cette publication :
publications.gc.ca/pub?id=9.917039&sl=1

• Format MARC XML
• Format MARC HTML

Demander des formats alternatifs