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Hironobu Hyodo
Okayama University of Science
68Publications
14H-index
690Citations
Publications 68
Newest
#1Tetsumaru ItayaH-Index: 35
#2Hironobu Hyodo (Okayama University of Science)H-Index: 14
Last.Chiara Groppo (UNITO: University of Turin)H-Index: 21
view all 4 authors...
Source
#1Ferenc Molnár (Geological Survey of Finland)H-Index: 14
#2Hugh O’Brien (Geological Survey of Finland)H-Index: 9
Last.Grigorios SakellarisH-Index: 5
view all 7 authors...
The Hattu schist belt is an emerging gold-producing ore district in the western part of the Archean Karelian Province of the Fennoscandian Shield. The belt consists of 2.76 to 2.70 Ga tonalite, granodiorite, and leucogranite intruded into a mafic-felsic epiclastic-volcanic sequence of an only slightly older age. Complex and successive folding, shearing, and hydrothermal processes affected these rocks prior to the lower amphibolites facies peak metamorphism (550° ± 50°C; 3–5 kbar) at ca. 2.70 Ga....
7 CitationsSource
#1Keiko Sato (Okayama University of Science)H-Index: 8
#2Hiroshi Kawabata (Kōchi University)H-Index: 18
Last.Hidenori Kumagai (JAMSTEC: Japan Agency for Marine-Earth Science and Technology)H-Index: 5
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Abstract During the Integrated Ocean Drilling Program (IODP), a total of 41.54 m of basement rock, consolidated volcaniclastic sediment, was recovered beneath a thin sediment cover. The drilled site is at the eastern end of the crestal area of Bowers Ridge, a north and westward sweeping offshoot of the Aleutian Arc into the Bering Sea. The volcanic sequence recovered from Holes U1342A and U1342D was divided into six major lithologic units. We used the single grain 40 Ar– 39 Ar dating method perf...
3 CitationsSource
#1Shigehiro KatohH-Index: 15
#2Yonas BeyeneH-Index: 18
Last.Gen Suwa (UTokyo: University of Tokyo)H-Index: 34
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A substantial revision to the age of the Chorora Formation, Ethiopia, constraining the deposits to around 8 million years old and forming a revised age constraint for the human–gorilla lineage split.
18 CitationsSource
#1Toru Takeshita (Hokkaido University)H-Index: 21
#2Koshi YagiH-Index: 8
Last.Tetsumaru Itaya (Okayama University of Science)H-Index: 35
view all 5 authors...
Metamorphic rocks experience change in the mode of deformation from ductile flow to brittle failure during their exhumation. We investigated the spatial variation of phengite K–Ar ages of pelitic schist of the Sambagawa metamorphic rocks (sensu lato) from the Saruta River area, central Shikoku, to evaluate if those ages are disturbed by faults or not. As a result, we found that these ages change by ca 5 my across the two boundaries between the lower-garnet and albite–biotite, and the albite–biot...
2 CitationsSource
#1Hironobu HyodoH-Index: 14
#2Keiko SatoH-Index: 8
Last.Tsuyoshi KomiyaH-Index: 38
view all 6 authors...
#1Kenji Shimizu (JAMSTEC: Japan Agency for Marine-Earth Science and Technology)H-Index: 10
#2Takashi SanoH-Index: 10
Last.Masao Nakanishi (Chiba University)H-Index: 8
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3 CitationsSource
#2Hironobu HyodoH-Index: 14
Last.Tetsumaru ItayaH-Index: 35
view all 3 authors...
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