Island Arc

Cover image for Vol. 26 Issue 5

Edited By: Tetsuji Muto and Yoshihiko Tamura

Impact Factor: 0.837

ISI Journal Citation Reports © Ranking: 2016: 159/188 (Geosciences Multidisciplinary)

Online ISSN: 1440-1738

Virtual Special Issue: Precambrian World 2009


An international geoscience symposium featuring "Precambrian" was held back in March 2009 at Kyushu University, southwest Japan. This virtual special issue is made up of a collection of six papers published by the participants in Island Arc during the last four years, and is a fruit of the successful symposium. Topics covered by the papers are truly diverse in terms of geology, geography, and geochronology; Kano et al. (2011), based on geochemistry of carbonate rocks from China, emphasized important roles of dissolved organic carbon for expansive biological evolution (animal multicellularity) in the early Ediacaran. Takashima et al. (2011) studied mm to sub-mm order iron-rich bands recently formed at a hot-spring in Akita Prefecture, northeast Japan, and claimed that they were formed by iron-oxidizing bacteria and had implications for lamination of BIFs (banded iron-formations) in early Earth. Hickman (2012) is a landmark review paper on the Archean tectonic evolution of the Pilbara Craton, Western Australia. Pilbara Craton has been one of the most popular targets for research related to Archean-Paleoproterozoic geology, geochemistry, geobiology, and tectonics. Kiyokawa et al. (2012a) reported roles of bottom current for on-going sedimentation of iron-rich materials in the Nagahama Bay of the Satsuma Iwo-jima Island, southwest Japan. The island is an active volcano (Kikai Caldera) with very shallow (only meters depth), low-temperature submarine hydrothermal activity. Such environment, quite rare in the world, can be regarded as modern- analogue for BIF precipitation. Kiyokawa et al. (2012b) presented geological and geochemical evidence for lateral variations (over several km) in stratigraphy, hydrothermal alteration, and biological activity of the 3.2 Ga old volcano-sedimentary sequences formed in an island-arc setting. Lastly, Nyame (2013) reviewed the relationship between Proterozoic mafic rocks and prolific metalliferous deposits (such as Mn and Au) in the Birimian of the West African Craton, and suggests that it may have far more genetic implications than previously envisaged. I sincerely thank the Editor in Chief, Prof. Yasufumi Iryu of Tohoku University, for this extraordinary patience and continued encouragement for publication of this virtual special issue.

Guest Editors: Kosei E. Yamaguchi, Shoichi Kiyokawa, Rajesh Hariharan

Review of the Pilbara Craton and Fortescue Basin, Western Australia: Crustal evolution providing environments for early life
ARTHUR HUGH HICKMAN

Evolution of animal multicellularity stimulated by dissolved organic carbon in early Ediacaran ocean: DOXAM hypothesis
AKIHIRO KANO, YOKO KUNIMITSU, TETSUHIRO TOGO, CHIDURU TAKASHIMA, FUMITO SHIRAISHI, WEI WANG

Bacterial symbiosis forming laminated iron-rich deposits in Okuoku-hachikurou hot spring, Akita Prefecture, Japan
CHIZURU TAKASHIMA, TOMOYO OKUMURA, SHIN NISHIDA, HIROKO KOIKE, AKIHIRO KANO

Effects of tides and weather on sedimentation of iron-oxyhydroxides in a shallow-marine hydrothermal environment at Nagahama Bay, Satsuma Iwo-Jima Island, Kagoshima, southwest Japan
SHOICHI KIYOKAWA, TOMOMI NINOMIYA, TOMOAKI NAGATA, KAZUMASA OGURI, TAKASHI ITO, MINORU IKEHARA, KOSEI E. YAMAGUCHI

Lateral variations in the lithology and organic chemistry of a black shale sequence on the Mesoarchean seafloor affected by hydrothermal processes: The Dixon Island Formation of the coastal Pilbara Terrane, Western Australia
SHOICHI KIYOKAWA, TAKASHI ITO, MINORU IKEHARA, KOSEI E. YAMAGUCHI, SHOICHIRO KOGE, RYO SAKAMOTO

Origins of Birimian (ca 2.2 Ga) mafic magmatism and the Paleoproterozoic ‘greenstone belt’ metallogeny: a review
FRANK K. NYAME

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