Distribution of quaternary siliceous sponge spicules in sediments of ODP Leg 180 sites

Siliceous sponge spicules were found in Quaternary sediments recovered during drilling of Leg 180. The assemblage consists mainly of monaxon forms. Relative abundances of the various types are tabulated.

在Leg 180航次钻探获取的第四纪沉积物中发现了硅质海绵骨针（Siliceous sponge spicules）。该骨针组合以单轴型为主，各类骨针的相对丰度已制表列出。