Submerged and eroded drumlins off northeastern Massachussetts

Auteurs :
OLDALE, R.N.
KNEBEL, H.J.
BOTHNER, M.H.

Description :
Streamlined, oval-shaped, oriented topographic highs in Massachusetts Bay are identified as the erosional remnants of drumlins. The topographic highs correlate with outlines of lag gravel deposits on the sea floor and both the highs and lag gravel seafloor footprint have a distinct east-southeast long axis trend. This trend is similar to the preferred orientation of the long axes of drumlins in the Boston Basin and indicates the flow direction of the late Wisconsinan Laurentide Ice Sheet. Modification of the drumlins occured during two passages of the shoreline.


Type de document :
Article de périodique

Source :
Geomorphology (Amsterdam), issn : 0169-555X, 1994, vol. 9, n°. 4, p. 301-309, Collation : Illustration, Références bibliographiques : 24 ref.

Date :
1994

Editeur :
Pays édition : Pays-Bas, Amsterdam, Elsevier