Scheduled Cruises in 2001

Summary of a recent cruise on margins research (CA.011)

Location :   off Nova Scotia, Canada

Research ship and cruise identifier :   CCGS Hudson (SMART)

Sailed :   20th June, 2001; Dartmouth, NS, Canada

Docked :   11th July, 2001; Dartmouth, NS, Canada

PI :   Keith E. Louden

Laboratory :   Department of Oceanography, Dalhousie University, Halifax, Nova Scotia, Canada

Other investigators :   H. Ruth Jackson and Sonya A. Dehler, Geological Survey of Canada (Atlantic Division), Dartmouth, Nova Scotia, Canada

E-mail :   Keith.Louden@Dal.Ca

Scientific objectives :   The continental margin off Nova Scotia, Canada, marks the transition from volcanic style margins to the south (U.S. East coast) to non-volcanic style margins to the north (Newfoundland and Labrador). Off Nova Scotia, the East Coast Magnetic Anomaly (ECMA) progressively weakens northward and eventually disappears. A well developed ECMA commonly correlates with seaward dipping reflections (SDR). The SMART refraction seismic experiment was designed to study the transition from volcanic to non-volcanic style margins. Data were collected along three lines covering the entire transition zone. The southernmost line lies within the area where seaward dipping reflectors are observed, while the northernmost line is located just north of where the ECMA disappears.