Daily Science Report: Monday January 22nd

By Mike Cheadle
Another day, another dive. We recovered Sentry in the early pm & looked at another spectacular bathymetric map, which we used to site part of the next Jason dive, which was launched after dinner. Today’s target is to go deep, to 5.1km below sea level, in order to try to get a deep section of the gabbroic crust. There’s definitely outcrop down there- but is it gabbro?? We’ll find out later this evening. Rock cutting & describing from the latest dive was also proceeding well. The uppermost samples are much more heterogeneous compared to those below, with very large variation in grain sizes, high aspect ratio plagioclase, veins and cross cutting dikes. We also did two successful live broadcasts to schools today.