Expedition 322 was designed to investigate characteristics of incoming sedimentary strata and igneous basement at the Nankai accretionary prism. Site C0012 drilled to igneous basement through sedimentary units instead of C0011 that drilling was discontinued due to problem of drill bit.

File No. 322C0012A53R1

Expedition : 322
Site : C0012
Hole : A
Core : 53R
Section : 1

CSF Depth : 537.00m

A sharp contact between red claystone and basaltic basement of Phillipine sea plate. The volcanic rock is older than 18.921 Ma. The 38.2m of basement coring had been conducted and found pillow lava basalts, basalts, basaltic-hyaloclastite breccia, and mixed rubble pieces of basalt caused by drilling disturbance.

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