Processed to 3673.5 feet, more intrusions

Today we boxed rock core to a depth of 3673.5 ft, 83.5 ft deeper than yesterday.  We saw more intrusions like those reported yesterday, among both pahoehoe and ʻaʻa flows.  The intrusions are generally denser and a bit more difficult to drill through than lava flows, which has slowed down the drilling penetration rate.  Additionally, the highly fractured nature of most of the rock has also led to some short (<10 ft) runs due to core barrel blockage.  The additional weight that must be exerted on the rock in order to cut through these intrusions also led to the end of our first HQ drill bit, the crew is currently tripping out pipe to replace the bit.  That bit lasted ~750 ft, which is a solid bit life when drilling through subaerial basalt.