Adjusted depth scale and age determinations for IODP Site 347-M0063

Cores recovered from Hole M0063A experienced significant expansion as gas was released during the recovery process, resulting in high sediment loss. Therefore during operations at the subsequent four holes, penetration was reduced to 2 m per 3.3 m coring run, permitting expansion into 1.3 m of initially empty liner.

Fully filled liners were recovered from Holes B through E, indicating that the length of each recovered interval exceeded the penetrated distance by a factor of >1.5. We note a typical logarithmic trend in the down-core gamma density profiles, with anomalously low density values within the upper ~1 m of each core. We interpret that expansion primarily occurred in this upper interval, which is also visible in the core images, and suggest that a simple linear correction is inappropriate.