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Journal of Geography (Chigaku Zasshi), 2020 Vol.129 No.1

2020 Vol.129 No.1

Sarmiento Fossil Forest

The photo shows large pieces of silicified wood washed out from Paleocene (early Cenozoic) strata exposed in Patagonia, Argentina. This petrified wood occurs in the Sarmiento Fossil Forest nature reserve domain (45°47’S, 68°57’W), which is located on the outskirts of Sarmiento, Chubu Province. The fossil forest, ca. 1880 hectares, is underlain by colorful (gray, red, and purple) beds of volcanic ash and sandstone with numerous examples of silicified wood. Discovered in 1927, this fossil monument has attracted tourists since the 1970s, and in 2001 was designated a state natural reserve. Silicified wood contains trunks of palms, ferns, and conifers, some of which reach 1 meter in diameter and several meters in height. In this area, the outdoor temperature varies greatly between day and night, leading to crack formation in rocks and fossils. In severe winters, freezing and expansion of seeping water in these cracks often breaks down silicified wood into smaller pieces. Visitors can observe a myriad of broken fossil wood pieces on the ground just like modern wood chips.


(Photograph & Explanation: Daiji HIRATA)

Review Article

The Process of Urbanization, the Restructuring of Urban Spaces,
　and the Formation of Suburban Residential Areas in China’s Cities
　under the Economic Transition

Tiantian WANG

Journal of Geography (Chigaku Zasshi), 2020, 129(1), 1.

DOI:10.5026/jgeography.129.1

Original Articles

Geology and Volcanic History of Hachimandake Volcanic Group,
　the East of Hakkoda Caldera, Northeast Japan

Takashi KUDO, Tohru DANHARA,
Hideki IWANO and Tohru YAMASHITA

Journal of Geography (Chigaku Zasshi), 2020, 129(1), 21.

DOI:10.5026/jgeography.129.21

Fragmented Ancient Fore-arc Basin:
　Cretaceous–Paleogene Sandstones Sporadically Found
　in Kanto and Southern Tohoku, Japan, as Eastern Extensions of the Izumi Group

Ryo HASEGAWA, Yukio ISOZAKI and Yukiyasu TSUTSUMI

Journal of Geography (Chigaku Zasshi), 2020, 129(1), 49.

DOI:10.5026/jgeography.129.49

Local Image Strategies in the Development Policies
　of Merged Municipalities without a Core Area:
　Scale Analysis of the Case of Hokuto City, Yamanashi Prefecture

Seia HISAI

Journal of Geography (Chigaku Zasshi), 2020, 129(1), 71.

DOI:10.5026/jgeography.129.71

Evaluation of Active Tectonics in the Source Area
　of the 2008 Iwate‒Miyagi Nairiku Earthquake

Makoto YANAGIDA, Yasuhira AOYAGI, Kota SHIMOGAMA,
Kazuhiko OKAZAKI and Toshinori SASAKI

Journal of Geography (Chigaku Zasshi), 2020, 129(1), 89.

DOI:10.5026/jgeography.129.89

Short Articles

Reexamination of the Fluvial Terrace Development in the Nagatoro Gorge
　and the Development of Longitudinal Profile of the Ara River
　in the Kanto District, Central Japan

Takayuki TAKAHASHI and Toshihiko SUGAI

Journal of Geography (Chigaku Zasshi), 2020, 129(1), 123.

DOI:10.5026/jgeography.129.123

Verifying Estimates of the Amount of Methane Carried
　by a Methane Plume in the Joetsu Basin, Eastern Margin of the Sea of Japan

Ryo MATSUMOTO and Chiharu AOYAMA

Journal of Geography (Chigaku Zasshi), 2020, 129(1), 141.

DOI:10.5026/jgeography.129.141

Note

Postscript to the Japanese Translation of
　“Notiz Ueber die Höhe des Fujinoyama” (E. Naumann, 1885):
　Additional Remarks on “Yajima, M. and Yamada, N. (2013):
　Journal of Geography (Chigaku Zasshi), vol. 122, 535‒538”

Michiko YAJIMA and Naotoshi YAMADA

Journal of Geography (Chigaku Zasshi), 2020, 129(1), 147.

DOI:10.5026/jgeography.129.147