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Journal of Geography (Chigaku Zasshi), 2022 Vol.131 No.5

2022 Vol.131 No.5

Lake Chauvet Maar in the Chaîne des Puys Volcano Group, Central France

Alpine orogeny has made several rifts with associated volcanism in the European continent since the end of the Mesozoic Era. Some of these volcanoes have continued to erupt even into the Quaternary period. The Chaîne des Puys volcano group consists of about 100 scoria cones, maars, and lava domes distributed along the western margin of the Limagne rift in the French Central Massif, which extends west of Lyon, the third largest city in France, from north to south. The latest eruption is considered to be that of Lac Pavin maar, located near its southern end, 7,000 years ago. The photo shows Le Lac Chauvet maar (diameter 600 m, depth 73 m), which is adjacent to the southwestern edge of Lac Pavin maar. It is slightly older than the Lac Pavin maar and is considered to have formed at the end of the last ice age.


(Photograph: ©Motomaro SHIRAO; Explanation: Masato KOYAMA)



Original Articles

Strain-rate Field of Japan Estimated from GNSS Data and
 Its Interpretation Based on Inter- and Intra-arc Deformation

Yukitoshi FUKAHATA, Tomohisa OKAZAKI and Takuya NISHIMURA

Journal of Geography (Chigaku Zasshi), 2022, 131(5), 479.

DOI:10.5026/jgeography.131.479

Relationship between Water Color in Tidal Pools and Groundwater Flow
 on Foreshore, Kujukuri Beach, Chiba, Central Japan

Takeshi YOSHIDA, Osamu KAZAOKA, Takashi KUSUDA,
Kunio FURUNO and Atsushi KAGAWA

Journal of Geography (Chigaku Zasshi), 2022, 131(5), 497.

DOI:10.5026/jgeography.131.497

Geochronological Examination and Geomorphic Evolution of River Terraces Distributed
 along the Hiji-kawa River in Ehime Prefecture, Southwest Japan:
 Based on Topographic Continuity and Weathered Degree of Gravels

Makoto YANAGIDA, Michiharu IKEDA, Naoki NISHIZAKA,
Kozo ONISHI and Kazunari KIMURA

Journal of Geography (Chigaku Zasshi), 2022, 131(5), 521.

DOI:10.5026/jgeography.131.521

Short Article

Geographical Position of Kyushu Island on Inoh Map and Magnetic Declination

Michio NOGAMI

Journal of Geography (Chigaku Zasshi), 2022, 131(5), 545.

DOI:10.5026/jgeography.131.545

Letter

Comparison of Geomorphological Land Classification Maps with Flood Hazard Maps
 at Hachinohe Plain, Aomori Prefecture

Yuichi NIWA and Toshihiko SUGAI

Journal of Geography (Chigaku Zasshi), 2022, 131(5), 557.

DOI:10.5026/jgeography.131.557

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