...Yoshiaki Yamaguchi Abstract Intergrowth and zoning of interstitial amphiboles in a quartz diorite of the Koyama calc-alkaline intrusion, Susa, southwest Japan indicate that hornblende in this rock initially crystallized in coexistence with cummingtonite, then changed in composition toward...

... and is exposed around Mt Koyama, where it intrudes both the Susa Group and the Yamashima andesites. Intrusive relationships between the Yamashima andesites and the gabbros are observed at Cape Koyama, where the gabbros contain andesite clasts several tens of centimetres in diameter. The pluton is lithologically...

... and petrological fields. M. Satish-Kumar Editor-in-Chief Vol. 119, Issue 1, 2024 Original Articles Fluorite alignments cutting metasomatic textures in trachyte feldspars from Oki-Dogo Island, Sea of Japan. Satoshi NAKANO. Petrogenesis of Josoji rhyolite and intrusive rocks of NE Shimane Peninsula, SW Japan...

... (e.g., Lamb, 2006 ; Gao and Wang, 2014 ; England, 2018 ). The paleopiezometry estimates span 10–100 MPa, and most define a stress range for relatively shallow depths near the frictional-viscous transition for subduction geotherms (e.g., Schmidt and Platt, 2022 ; Koyama et al., 2024 ). The ranges...

...N. B. W. HARRIS; F. M. H. MARZOUKI; S. ALI Abstract The Jabel Sayid Complex comprises two principal rock types which require distinct source regions. An earlier intrusion (572 ± 24 Ma) of biotite-hornblende monzogranite displays selective enrichment of LIL elements and depletion of HREE...

... oxides in the Daini-Nishi-Yamato Seamount, Sea of Japan: Do they really contain critical-metal particles? Keishiro Azami, Tokio Doshita, Kanta Koyama, Shiki Machida, and Etsuo Uchida article 106202 Inverse radius weighting and its python package IRWPy : A new topography-informed interpolation to enhance...

... ]. These buildings, ranging in height from one to 26 stories, were subjected to costly intrusive inspection of connections ( FEMA352 2000, SAC 2000 , and FEMA-354 2000 ). Such “unanticipated” damage to steel moment-frame buildings was also observed following the 17 January 1995 Kobe earthquake (FEMA-354...

... intrusive inspection of connections ( FEMA-352, SAC 2000 , FEMA-354 ). Such “unanticipated” damage to steel moment-frame buildings was also observed following the 17 January 1995 Kobe earthquake (FEMA-354). In this paper, we focus on a 30-story and a 29-story neighboring tall building in the Shinjuku...

...) is observed below the Toya caldera, which was inferred as cooling magma or an altered or heated upper crust attributed to past magma intrusion. A resistivity structure observed below the volcanic edifice is considered to reflect the steady state of the dormant volcanic system in this area, and there is likely...

... ). The Tarim Permian plume activity generated a large igneous province (LIP; > 250,000 km 2 ) and (ultra)mafic to felsic intrusions ( Fig. 1 ; Xu et al., 2014 ). Initial plume impingement occurred beneath western Tarim at ca. 300 Ma, followed by crustal doming uplift/erosion, regional unconformities ( Li...

.... Geophys. Res. 82 , 1347 - 1352 . Julian B. R. (1983) . Evidence for dyke intrusion earthquake mechanisms near Long Valley caldera, California , Nature 303 , 323 - 325 . Julian B. R...

... are underlain by extensive Fe-oxyhydroxide crusts ( Fig. 3I ). The hydrothermal fields on Volcano 19 are closely associated with intrusive dike swarms that are well exposed on the central cone and in the walls of the western caldera. The dikes are manifestations of the underlying magmatic system...

... of biotite ( Craw et al. 1982 ). The complete absence of granitic intrusives to which thermal effects could be attributed renders this and comparable Haast Schist sections particularly suitable for the study of regional metamorphic phenomena. Unlike the Alpine Schist, the schists of east Otago cooled...

... Yamaguchi Y ( 1985 ) Hornblende–cummingtonite and hornblende–actinolite intergrowths from the Koyama calc-alkaline intrusion, Susa, southwest Japan . Am Mineral 70 : 980 – 986 ...

... in space and time Journal of Geophysical Research 1991 96 13963 13711 Gill J. B. Torssander P. Lapierre H. Taylor R. Kaiho K. koyama M. kusakabe M. Aitchison J. Cisowski S. Daley K. Fujioka K. Klaus A. Lovell M. Marsaglia K. Pezard P...

... intrusion and comprises two mountain ridges that are arcuate in plan, and open toward the east. This alkaline complex is a concentrically zoned multiphase intrusion of Devonian age, derived from a huge body of silica-undersaturated magma emplaced in Archean granitic gneisses at the contact with Proterozoic...

... is the pressure gradient (Pa m −1 ). Based on equation (3) , a 2D pressure conduction equation ( equation 4 ) can be derived by combining mass conservation and the cubic flow equation. This equation describes a stable flow process ( Koyama et al. 2008 ): ∇ ( ρ g e g 3 12 μ ∇ p...

... piecemeal collapse of caldera and allows hydrothermal flow in number of localities. As result, volcanogenic massive sulfide (VMS) deposits may form at different water depths, depending on how much individual fault block has subsided. C: Renewed magmatism causes resurgence and intrusion into roof rocks above...

... and metabasitic regionally metamorphosed rocks and intermediate to felsic intrusive bodies [ Vitte, 1981 ]. Examples of explosive calderas in ensialic volcanic arcs are the Toba Caldera in Sumatra [ Chesner, 2012 ] about 74 Ka the Aira Caldera in Kyushu Island 22 Ka. [ Aramaki, 1984 ] and calderas in the Taupō...

...-Burgasy range ( Solonenko et al., 1968 ). Various stratified formations participate in the geological structure of the mountain frame and bottom of the Kotokel’ depression: Archean, Proterozoic, and Cenozoic groups, late Proterozoic intrusions of the Barguzin complex and others ( Shobogorov, 1981...