Abstract
Canada Basin acoustic reverberation experiment (CANBARX) was an ice camp located at 74°N, 154°W in the Canada Basin. The CANBARX marine geophysical experiments successfully tested the use of both multichannel arrays and tethered ocean bottom seismometers on the drifting ice pack for seismic refraction studies in the ice covered regions of the Arctic Ocean. The seismic refraction line shot indicates a crustal structure with approximately 4.3 km of sediment overlying an oceanic basement and a 9.8–10.7 km depth beneath the seafloor to the Moho. Both the CANBARX data and that of the other nearby refraction lines in the Canada Basin indicate an unusual oceanic basement in which layer 3 is either exceptionally thin or absent. After correcting for sediment loading and crustal radioactivity, the Parsons and Sclater age versus depth curve suggests an age between 90 and 130 m.y. B.P. is suggested. This range is consistent with recent magnetic studies and heat flow data.
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