6 weeks 4 days
I'm a Professor of Geology in the School of Geosciences at the University of South Florida in Tampa, FL. I've worked on the igneous and metamorphic geochemistry of convergent plate boundaries my whole career, which mostly means I work on land, as that's where most of those rocks tend to be. However, the Izu-Bonin subduction system is unique in giving us opportunities answer questions about how these kinds of plate boundaries get formed, and how the volcanic arcs that typify them develop. So, I'm now out here on my second IODP research cruise! I sailed on Expedition 352 in 2014, and now I'm participating in Expedition 366. I'll report in as the work schedule here permits on life on an international research cruise, the science we're doing (which is both similar to, and different from what we were doing two years ago!), what they have us doing on the ship and in the labs, and interesting events of the day.
Jeff Ryan's blog
Submitted by Jeff Ryan on Sun, 02/05/2017 - 06:03
Submitted by Jeff Ryan on Tue, 01/31/2017 - 13:34
Sorry to have been offline so long - but we have been BUSY here!
Submitted by Jeff Ryan on Fri, 01/20/2017 - 23:22
We are currently sailing north toward Asut Tesoru Seamount, after having spent a day pounding a stuck bridge plug down the 200+ meter cased hole at Yinazao Seamount. This after several days reaming and casing a hole at Fantangisna Seamount - which we're going to visit again, to check on how cement in that hole is holding up, after we sort out what's happening at the bottom of t
Submitted by Jeff Ryan on Sun, 01/15/2017 - 20:34
Submitted by Jeff Ryan on Tue, 01/10/2017 - 21:19
Submitted by Jeff Ryan on Thu, 01/05/2017 - 23:13
It's been a busy number of days here on the JR since my last post!
Submitted by Jeff Ryan on Tue, 12/27/2016 - 19:35
It's been a rather quiet couple days here on the JR, as the drillers have been diligently drilling what will ultimately become a 200 m cased drill hole with an ROV landing pad on top, for future instrumentation and use as a venue for real-time measurements of the unusual upwelling fluids we encountered at Yinazao Seamount.
Submitted by Jeff Ryan on Fri, 12/23/2016 - 21:22
Submitted by Jeff Ryan on Mon, 12/19/2016 - 15:43
OK - several blogs ago I promised to explain why this was THE Expedition I always wanted to be on, with the teaser that it had a lot to do with Serpentinite.
Serpentinite, formally defined, is a rock made mostly of Serpentine, Serpentine is a common mineral formed during the metamorphism of olivine-rich rocks.
Submitted by Jeff Ryan on Sat, 12/17/2016 - 15:26
Well, it took more than a day to get core on deck!