Late Early Permian Fusulines along Gongendani, South of Mt. Ryozen, Shiga Prefecture, Central Japan

2019 ◽  
Vol 23 (2) ◽  
pp. 131
Keyword(s):  
Early Permian ◽  
Central Japan

Early Permian (Cisuralian) ostracods from Japan: characteristic ostracod assemblage from a seamount of the Panthalassic Ocean

Zootaxa ◽  
2018 ◽  
Vol 4515 (1) ◽  
pp. 1
Author(s):  
GENGO TANAKA ◽  
YUKIO MIYAKE ◽  
TERUO ONO ◽  
AIHUA YUAN ◽  
MASAHIRO ICHIDA ◽  
...  
Keyword(s):  
Deep Sea ◽  
Ocean Floor ◽  
Reef Slope ◽  
Early Permian ◽  
Southwestern Part ◽  
Central Japan ◽  
Micritic Limestones

Silicified ostracods were recovered from Cisuralian micritic limestones of the Ryozensan Limestone Formation from the southwestern part of Ryozensan Mountain, Taga City located in Shiga Prefecture, Central Japan. Twenty-seven species belonging to 19 genera were obtained, of which six species are new and are described here: Bairdia tagaensis Tanaka sp. nov., Bairdiacypris ikeyanoriyukii Tanaka sp. nov., Kellettina noriyukii Tanaka sp. nov., Microcheilinella shigensis Tanaka sp. nov., Oliganisus ryozensannensis Tanaka sp. nov., and Pustulobairdia ohmiensis Tanaka sp. nov. Some Palaeozoic limestone localities in Japan cap greenstones and are surrounded by younger cherts (such as Mino Terrane of this study). They represent a characteristic reef and reef-slope environment around a seamount surrounded by deep sea ocean floor. This result is concordant with the ostracod assemblage. After this report, a Panthalassan ostracod fauna could be defined for the Cisuralian. 

A Kungurian (Early Permian) Panthalassan brachiopod fauna from Hatahoko in the Mino Belt, central Japan

2011 ◽  
Vol 85 (3) ◽  
pp. 553-566 ◽  
Author(s):  
Shu-Zhong Shen ◽  
Junichi Tazawa ◽  
Yukio Miyake
Keyword(s):  
North America ◽  
Equatorial Region ◽  
Japanese Island ◽  
Accretionary Complex ◽  
Early Permian ◽  
Eurasian Plate ◽  
Central Japan ◽  
West Texas ◽  
Brachiopod Fauna ◽  
The Western Pacific

Twelve brachiopod species are described from the Cisuralian (Early Permian) Kungurian horizon of a large limestone block in the Middle Jurassic accretionary complex at Hatahoko in the Mino Belt, central Japan. Most species of the Hatahoko fauna are known from the Kungurian to lowest Guadalupian (Middle Permian) of West Texas, U.S.A. The Kungurian age is also indicated by the associated conodonts in the same limestone block. The Hatahoko brachiopod fauna, as well as some other previously-reported Guadalupian brachiopod faunas, exhibits a very strong paleobiogeographical affinity with the faunas in West Texas, U.S.A. Therefore it can be interpreted as a fauna which inhabited reef-seamount complexes close to North America in the mid-equatorial region of the Panthalassa in the late Early Permian, rifted westwards thousands of kilometers, and finally accreted onto the Japanese Island when the Western Pacific Plate subducted beneath the Eurasian Plate during the Jurassic.

Early Permian Ostracods from Mugi County, Gifu Prefecture, Central Japan

2012 ◽  
Vol 16 (2) ◽  
pp. 88-106 ◽  
Author(s):  
Gengo Tanaka ◽  
Teruo Ono ◽  
Aihua Yuan ◽  
Masahiro Ichida ◽  
Haruyoshi Maeda
Keyword(s):  
Early Permian ◽  
Central Japan ◽  
Gifu Prefecture

The origin and hydrochemistry of deep well waters from the northern foot of Mt. Fuji, central Japan

2016 ◽  
Vol 50 (3) ◽  
pp. 227-239 ◽  
Author(s):  
Muga Yaguchi ◽  
Yoichi Muramatsu ◽  
Hitoshi Chiba ◽  
Fumiaki Okumura ◽  
Takeshi Ohba
Keyword(s):  
Central Japan ◽  
Deep Well ◽  
Well Waters
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