Abstract
Micro spherules (5-10μ in diameter) were found in “Kitami clay” using the scanning electron microscope. These micro spherules analysed by electron probe Xray, contain Si, Al and O. Trace elements are Fe, Ti and K.
These micro spherules are divided into 6 type by scanning electron microscope. Grain size distribution of the micro spherules was obtained by opitical microscope.
There are two possibilities of the origine of the micro spherules namely volcanic and organic. The volcanic origine is presumed by geological examination for the following reasons,
1. Kitami clay is a weathering product from Kutcharo volcanic ase (K4).
2. Micro spherules are found in lower layer (K4) of Kitami clay.
Some micro spherules may be a kind of pollen fossiles judging from its form and size. The certain origine of the micro spherules in Kitami clay needs more study.
