抄録
By the drilling investigation in the northwestern part of Zama Hills, we have recognized many pumice beds in the Kanto Loam Formation, including TP (Tokyo Pumice bed), Pm-l (Ontake daiichi pumice bed), UP (Uwabami Pumice bed), ZBP (Zama B Pumice bed), etc.
These beds except ZBP are important key pumice beds in the Kanto Loam Formation and show many similarities to their respective counterparts in the Oiso Hills and the Tama Hills.
ZBP, deposited 30-70 cm under the UP, should be correlated with Tu-7 (or β) pumice bed in the Oiso Hills according to stratigraphy. But, the fact that Tu-7 is much larger than ZBP in thickness makes it hard to correlate them.
For the Tama Hills, on the basis of similar lithofacies, we correlate the ZBP with the pumice bed or pumice lens in “Shimofuri Zone” which is sandwiched between UP and Hmp (Hyoumon Pumice bed). Hmp is generally correlated with Tu-7.
We consider that ZBP is one of the pumice beds which have a possibility to be distributed in the Zama and Tama Hills, but not in the Oiso Hills, provided that the correlation Hmp = Tu-7 is true.
https://ror.org/00bx6dj65 
