“Mapping ocean crust continental style”.
By Mike Chealde
It’s transit time and we’re pulling together the data we ‘ve been collecting for our final report. Shown left is the sample map for our area B. In this area we collected 318, mostly oriented, samples and mapped (using the Jason video) a roughly 1.5km by 2km area of the upper gabbroic crust, probably the most detailed mapping of lower oceanic crust ever carried out underwater. Red symbols are our samples, blue symbols indicate samples from a Jeff Karson led cruise to Pito Deep in 2005. Base map is an example of the wonderful maps produced by the Sentry team. Grey areas are unmapped because of the extreme terrain (up to 100m high vertical cliffs).