Kitayama Village

北山村

この地図の作成に当たっては、国土地理院長の承認を得て、同院発行の2万5千分の1地形図を使用した。(承認番号 平25情使、第72-GISMAP32551号)

Uccomfomity in Komatsu

Uccomfomity in Komatsu

A boundary section of the Hidakagawa Group of accretionary prism  which accomplishes a foundation in Kii Peninsula and Kumano Group of a forearc basin deposits who accumulated on it exposes. There is time difference of 50 million years in accumulation of a two layer group, and such relation is called clinounconformity. I accumulated in the Cretaceous period when Hidakagawa Group had a dinosaur by the oldest stratum group in the geopark plan area. Rotten spot (pothole) is seen and also produces a fossil seashell in whole sandstone bed of Kumano Group in an upstream riverbed right now.

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Kitayama-kyo Gorge

The V shape-like canyon where I come to vertical drop 600m was formed by sudden protuberance in the earth which consists of stratum of accretionary prism mainly and downward erosion on Kitayama-gawa River. The accretionary prism in this area was the oldest Hidakagawa Group in the geopark plan area and was accumulated in 70 million years bago. To carry a wood to Shingu before, a raft sink was performed. Wood transportation is switched over to a land route in now, and sightseeing raft descent is performed.

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Otonori

Otonori
Ejecta in the submarine volcano where It ranges around Otonori (pillow lava and tuff kinds) is the rock formed at quite distant ocean floor. After that it’s thought I took oceanic plate, and it was intermingled with a stratum of the land source which was carried to a trench and was accumulated by a trench in about 70 million years ago, and that it was added to a continent.
Otonori was a dangerous place in a raft sink, and the oar judgment by which the one by which heir’s eldest son didn’t take it and gave my younger brother a ride weathers the etymology, a historical origin and here was said to be a flower of a raft teacher.

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Jigo

Jigo

There is an inscription which commemorates excavation job completion of the channel of stream carved on a rock surface in a dangerous place in Kitayama-kyo Gorge raft sink in Jigo. The stratum of the accretionary prism distributed over a ravine was alternation of sandstone  and mudstone of the oldest Hidakagawa Group in the geopark plan area and was accumulated 70 million years ago. The folding structure is also seen.

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River Terrace in Shimooi

Former riverbed face was left in downward erosion, and it was formed. A river terrace with pellet beds is distributed over altitude 120m-130m more expensive than the present riverbed and 160-170m at Kitayama-gawa River basin. Shimooi remains (mountain remains of highlands of the Jomon period) is on the terrace, and it’s the place where a person was living more than ancient times.