is a mountain in
Tsubetsu,
Hokkaidō,
Japan. It is the source of the
Abashiri River
is a river in Hokkaidō, Japan.
History
Around 1000 years ago, the Okhotsk culture settled the river basin and moved inland. Remains from the Jōmon period have been found on the bottom of Lake Abashiri.
Course
The Abashiri River rises in Tsub ...
.
The mountain is made up of non-alkaline
mafic
A mafic mineral or rock is a silicate mineral or igneous rock rich in magnesium and iron. Most mafic minerals are dark in color, and common rock-forming mafic minerals include olivine, pyroxene, amphibole, and biotite. Common mafic rocks includ ...
volcanic rock 7 million to 1.7 million years old.
[ N3(102) per legend; located just northwest of Mt. Oakan (1370m). Map shows 978m elevation.]
References
Ahoro
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