# The Hanging Wall of Hikurangi

The JOIDES Resolution vessel is now at our first site, which has the exciting name of U1518. You can sense the anticipation amongst all the scientists and technicians because in a few hours time we will be putting the drill down and pulling out the first cores for IODP Expedition 375. HOW are we coring? Coring is done by lowering a long drill down below the seabed, and pulling out long, tubular core samples, much…

# JOIDES Resolution Playing Cards

They’re here!  These JOIDES Resolution playing cards depict images from the JOIDES Resolution drill ship, and can be used in a variety of different ways. There are four groups of cards: People, Places, Drilling, and Recreation, and each group has eight pairs of images. In addition, there is one card without a match. You can use the cards with students, family or friends to play games like Memory, Go Fish, or Old Maid, or make up one…

# Bit by Bit

RCB CORING, BIT #1: Although the penetration rates are relatively slow (with some faster intervals) and recovery is about what is expected, hole conditions appear to be reasonably good. The hole conditions are absolutely critical for us to be able to penetrate deeply, continue coring, and have a good hole for logging, packer tests, and CORKing. The next decision will be to determine when to stop coring with this Bit #1. A basic guideline based on a fair…

# Imagining Deep-Sea Drilling

In this activity that combines math and art, students will learn about the process of deep-sea drilling by making their own reentry cone and simulating drilling activities. Students can color and construct their own reentry cone using the pattern provided, then use scale ratios to calculate drilling distances and measurements.   The Reentry Cone and Casing (RECC) system is a permanent seafloor installation that helps scientists return to and re-enter a particular hole. The RECC allows a borehole to…

# A Bit of Disappointment

What’s the story? When we entered the Hole U1383B with the 14.75-inch bit, Charlie, the driller, found cement extending up from the casing shoe inside the 16-inch casing. This was a good sign that we likely had cement extending up on the outside of the casing as well. We need this to get a good seal for the experiment and to help support the entire seafloor structure.  We drilled through the cement, then lowered to…

# Animals on the JR?

Who knew that there were so many animals onboard with us? Not real animals, of course, but machines and tools that help the drillers do their work. Lots of them have animals in their names…I guess drillers like animals. Listed below are just a few! Alligator Box—The 10m-long box in which we store plastic core liners. Perhaps called this because nothing else but an alligator could be stored in this. Bigfoot—“Iron Roughneck,” the machine that automatically…

# Retrieving the CORK

Hole 395A was first drilled in 1975, and on Friday, we successfully retrieved the CORK observatory that was installed in 1997 on ODP Leg 174B (14 years ago). Here’s a look at part of that process. First, the drill floor guys picked up the CORK pulling tool and started preparing to lower it to the seafloor. They then picked up some drill collars (very thick-walled, heavy, orange pipe)—these make lots of noise as they pull them…

# Intro to seafloor drilling

Seafloor drilling is quite a technological feat, as I can now attest from first hand experience.  In today’s blog, I will show you a bit of the technology employed to collect samples for the scientists on Leg 330. 23 December 2010 Depending on the composition of the seafloor being drilled, different kinds of drill bits are used.  The drill bit is the part of the rig in direct contact with the seafloor, doing the cutting. …