Today was spent pondering the structural complexities revealed by Sentry dive 530, adding another long line to our multi beam survey, and another dredge (D21), this time on a seamount at the very southern end of the long survey line. All of which led to much pondering. Was the magnetic anomaly initially identified as 5n really 5n? or could it be 5Dn or even 6n? And friendly wagers were taken whether the dredging of the seamount would produce basalt or peridotite? Upon dredging gabbro, glacial erratics and but 2 tiny basalt pebbles, the jury decided “no decision!”. It could n’t be disproven that the two basalt pebbles were actually glacial erratics.
Tomorrow we continue surveying and dredging the oblique segment, and below is the seamount that turned out to be gabbro
Basalt or peridotite? or even gabbro…
