Search Results - "Kuma, Ryusei"

Hydrothermal formation of Fe-oxide bands in zebra rocks from northern Western Australia by Kawahara, Hirokazu, Yoshida, Hidekazu, Yamamoto, Koshi, Katsuta, Nagayoshi, Nishimoto, Shoji, Umemura, Ayako, Kuma, Ryusei

“…Zebra rock, found in the eastern Kimberley region of northern Western Australia, is a Late Proterozoic sedimentary rock with a rhythmic Liesegang-type Fe-oxide…”
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Syngenetic rapid growth of ellipsoidal silica concretions with bitumen cores by Yoshida, Hidekazu, Kuma, Ryusei, Hasegawa, Hitoshi, Katsuta, Nagayoshi, Sirono, Sin-iti, Minami, Masayo, Nishimoto, Shoji, Takagi, Natsuko, Kadowaki, Seiji, Metcalfe, Richard

“…Isolated silica concretions in calcareous sediments have unique shapes and distinct sharp boundaries and are considered to form by diagenesis of biogenic…”
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Biogenically induced bedded chert formation in the alkaline palaeo-lake of the Green River Formation by Kuma, Ryusei, Hasegawa, Hitoshi, Yamamoto, Koshi, Yoshida, Hidekazu, Whiteside, Jessica H., Katsuta, Nagayoshi, Ikeda, Masayuki

“…Rhythmically bedded cherts are observed in both pelagic marine and lacustrine deposits, but the formation mechanism in the latter remains highly uncertain. Our…”
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Decadal–centennial-scale solar-linked climate variations and millennial-scale internal oscillations during the Early Cretaceous by Hasegawa, Hitoshi, Katsuta, Nagayoshi, Muraki, Yasushi, Heimhofer, Ulrich, Ichinnorov, Niiden, Asahi, Hirofumi, Ando, Hisao, Yamamoto, Koshi, Murayama, Masafumi, Ohta, Tohru, Yamamoto, Masanobu, Ikeda, Masayuki, Ishikawa, Kohki, Kuma, Ryusei, Hasegawa, Takashi, Hasebe, Noriko, Nishimoto, Shoji, Yamaguchi, Koichi, Abe, Fumio, Tada, Ryuji, Nakagawa, Takeshi

“…Understanding climate variability and stability under extremely warm ‘greenhouse’ conditions in the past is essential for future climate predictions. However,…”
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Formation of ammonite concretions through organic decomposition in the iron-reduction zone by Muramiya, Yusuke, Yoshida, Hidekazu, Katsuta, Nagayoshi, Kuma, Ryusei, Mikami, Tomoyuki

“…ABSTRACT The ammonites in spherical carbonate concretions often preserve their original three-dimensional (3-D) shell shapes and detailed fragile structures…”
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