Latest Issue

Journal of Geography (Chigaku Zasshi), 2021 Vol.130 No.3

2021 Vol.130 No.3

Permian (Paleozoic) Red Beds in Thüringer Wald, Germany

Horizontal beds of the Zechstein Formation (Fm) in vivid reds were deposited in the non-marine Germanic basin, which was formed in mid-Pangea ca. 250 Mys ago (the latest Permian, Paleozoic). Until the mid-20th century, the youngest geologic period of the Paleozoic was called the Dyas, a name derived from a representative two-fold sequence composed of the Rotliegende Fm and the overlying Zechstein Fm. After recognizing a more complete standard section for a global correlation at Perm (Пермь) in the Uralian foothills (Russia), this time period was re-named the Permian. Nonetheless, the Zechstein Fm in Germany cannot be forgotten, as it comprises unique red beds with evaporites (including halite) and cupriferous black shale, which archive significant records of the extremely arid climate of the Permian mid-Pangea. These beds yield numerous well-preserved fossils of rare salamanders and even cockroaches.
 The Thüringer Wald (forest) in central Germany, next to the western border of the former East Germany, features hilly landscapes, in which the Caaschwitz quarry in the eastern part of Jena exposes a typical outcrop of the Zechstein Fm (photo). In neighboring areas, tourists, including Japanese, can easily recognize several familiar local names; e.g., Eisenach, which is known for being the birthplace of J.S. Bach; Weimar, which was the long-term residence of J.W. von Goethe, and home of the Bauhaus and the famous Constitution; and, Jena which was the location of the first optics workshop of Carl Zeiss, to whom many geologists owe a debt. This pleasant forest domain marks the transition from high-altitude southern Germany and flat lowlands extending towards the North Sea and Baltic Sea coasts.

(Photograph & Explanation: Yukio ISOZAKI)

Original Articles

Microfossils from Siliceous Rock Pebbles Contained
 in the Lower Cretaceous Ishido Formation of the Sanchu Group, Central Japan

Masanori OZEKI, Norikazu SHIMIZU,
Sachiko AGEMATSU and Katsuo SASHIDA

Journal of Geography (Chigaku Zasshi), 2021, 130(3), 311.


Marker Tephra Layers Indicating the Lowest Part of the Quaternary System Found
 in the Moroyama Hills and Kawajima Core, Western Kanto Plain, Central Japan

Tomonori NAYA, Makoto OKADA,
Akira FURUSAWA and Kiyohide MIZUNO

Journal of Geography (Chigaku Zasshi), 2021, 130(3), 331.


The Influence of Tropical Cyclones on the Seasonal Variability of Precipitation
 on Chichi-jima in the Ogasawara (Bonin) Islands during El Niño⁄LaNiña Events


Journal of Geography (Chigaku Zasshi), 2021, 130(3), 353.


Dalyite (K2ZrSi6O15) and Zektzerite (LiNaZrSi6O15)
 in Aegirine-bearing Albitite from Iwagi Islet, SW Japan

Teruyoshi IMAOKA, Sachiho AKITA and Mariko NAGASHIMA

Journal of Geography (Chigaku Zasshi), 2021, 130(3), 369.


Tephrostratigraphy and Eruption History of Kozushima Volcano,
 Izu Islands, Central Japan during the Last 30,000 Years

Masanori MURATA, Makoto KOBAYASHI, Kaori AOKI,
Takayuki TAKAHASHI, Fumikatsu NISHIZAWA and Takehiko SUZUKI

Journal of Geography (Chigaku Zasshi), 2021, 130(3), 379.


Outcrop-scale Deformation Structures of the Lower-Middle Miocene Strata
 in the Southernmost Part of the Akaishi Tectonic Zone, Central Japan:
 Their Significances for the Miocene Tectonic Rotation of the Eastern SW Japan Arc

Ken-ichi KANO

Journal of Geography (Chigaku Zasshi), 2021, 130(3), 403.


Geochemical Variations in Eruptive Products of Sambe Volcano, Southwest Japan,
 Based on Correlations of Tephra Layers in Drill Cores from Lake Suigetsu

Takafumi HIRATA and Tohru DANHARA

Journal of Geography (Chigaku Zasshi), 2021, 130(3), 429.



Numerical Modeling of Localized Subsidence Observed in Volcanic Regions Associated
 with the 2011 off the Pacific Coast of Tohoku Earthquake;
 Results for Displacement in the Line-of-Sight Direction of InSAR:
 An Addendum to “Journal of Geography (Chigaku Zasshi),
 Vol. 126, 685–705, 2017”

Kachishige SATO

Journal of Geography (Chigaku Zasshi), 2021, 130(3), 445.