Session outline
| Solid Earth Sciences (S) | ||
|---|---|---|
| Session Sub-category | Mineralogy & Petrology(MP) | |
| Session ID | S-MP32 | |
| Title | Oceanic & Continental Subduction Processes: petrologic/geophysical/geochemical perspective | |
| Short Title | Oceanic & Cont. Subduc. Processes | |
| Main Convener | Name | HAFIZ U. REHMAN |
| Affiliation | Kagoshima University | |
| Co-Convener 1 | Name | Takeshi Imayama |
| Affiliation | Research Institute of Frontier and Science Technology, Okayama University of Science | |
| Co-Convener 2 | Name | Kaushik Das |
| Affiliation | Hiroshima University | |
| Co-Convener 3 | Name | James F Bell |
| Affiliation | Arizona State University | |
| Session Language |
E |
|
| Scope |
Major orogenic belts on earth are formed by multi-dynamic processes such as subduction and collision. The resulted belts extend for hundreds of kilometers and the lithological or tectonic units preserve records of the evolutionary events. Investigation of such orogenic belts on a regional scale, rocks and minerals on a macro- and micro-scale, and understanding how, when and under what conditions the rocks and minerals formed allow earth scientists to elucidate geological events that occurred in the earth's interior and/or near the surface. Investigation of stress-strain regimes of rocks and minerals envisage deformation at plate-scale. Similarly, investigating crystallization/recrystallization of minerals from magma or due to metamorphic reactions, we can interpret the past events of the earth's history. Detailed geophysical and geochemical analysis of rocks and minerals enable us to understand water-rock/fluid interaction in the formation of new minerals, growth, and recrystallization. Moreover, geochronological investigations of specific minerals (such as zircon, garnet, rutile, apatite etc.) give information regarding the time-scale of crustal growth or metamorphic events. The proposed international session in the 2026 AGU-JpGU Joint Meeting 2026, a continuation from the last (> ten years) sessions, aims to bring together earth scientists from Japan and overseas to present their research related to the processes of subduction, collision, and metamorphism of crustal rocks, formation of oceanic/continental arcs, accretion/tectonic erosion of material along subduction zones and related topics. In addition, newly obtained data from geochemical and geophysical methodologies, modeling, and their interpretation to unravel earth process are very welcomed. |
|
| Presentation Format | Oral and Poster presentation | |
| Invited Authors |
Yunpeng Dong (Northwest University, China) |
|
| Time | Presentation No | Title | Presenter |
|---|---|---|---|
| Oral Presentation May 26 AM1 | |||
| 9:00 - 9:15 | SMP32-01 | Subduction or Non-Subduction? A Critical Reappraisal of the Nagaland–Manipur Ophiolites in the Western margin of the Burma microplate | Nongmaithem Lakhan Singh |
| 9:15 - 9:30 | SMP32-02 | Fluid-rock interaction processes during blueschist to eclogite facies metamorphism (Syros, Greece): a mineral oxygen isotope and trace element perspective | Thorsten Andreas Markmann |
| 9:30 - 9:45 | SMP32-03 | High-pressure metagabbros associated with metaserpentinites in eastern Taiwan: Petrologic characteristics and tectonic implications | Chin-Ho Tsai |
| 9:45 - 10:00 | SMP32-04 | Role of phyllosilicates in the weakening behavior of brittle fault zones: insights from natural samples and low-to-high velocity rotary shear experiments | Dyuti Prakash Sarkar |
| 10:00 - 10:15 | SMP32-05 | Garnet Records Peripheral Subduction of the Rodinia Supercontinent: Evidence from the Northwestern Margin of the Yangtze Craton | HAOZHENG WANG |
| 10:15 - 10:30 | SMP32-06 | Thermodynamic constraints on devolatilization of variably altered oceanic ultramafic rocks during subduction: Implications for subarc mantle oxidation | Weigang Peng |
| Oral Presentation May 26 AM2 | |||
| 10:45 - 11:00 | SMP32-07 | New perspectives on the Paleoproterozoic complex in the Himalaya from apatite geochemistry | Takeshi Imayama |
| 11:00 - 11:15 | SMP32-08 | Progressive symplectitisation of omphacite in the Tso Morari eclogite: microstructural and mineralogical perspectives | Dripta Dutta |
| 11:15 - 11:30 | SMP32-09 | Carboniferous to Permian subduction processes at the East Asian continental margin: Shallow to middle crustal rock records of Maizuru Terrane, Japan | Kaushik Das |
| 11:30 - 11:45 | SMP32-10 |
Tectonic style of early Neoproterozoic accretion of the northern Eastern Ghats Province to cratonic India: Constraints from petrology and phase diagram modeling |
Proloy Ganguly |
| 11:45 - 12:00 | SMP32-11 | Two-stage subduction and accretion from Proto- to Paleo-Tethys in the East Kunlun Orogen | Yunpeng Dong |
| 12:00 - 12:15 | SMP32-12 | Petrographic, geochemical, and graphite inclusions-based thermometry of tourmaline and garnet in metapelites of northwestern Himalaya, Pakistan | HAFIZ U. REHMAN |
| Presentation No | Title | Presenter |
|---|---|---|
| Poster Presentation May 26 PM3 | ||
| SMP32-P01 | Decoding a lost I-type volcanic province in Paleo-Proterozoic orogenesis of the Central Indian Tectonic Zone, India | ADITI SHARMA |
| SMP32-P02 | Geochemical and Sm–Nd Isotopic Constraints of Archean Mafic–Ultramafic Volcanics of the Prithvipur Greenstone Belt, Bundelkhand Craton, India | Balaram Sahoo |
| SMP32-P03 | Zircon Megacrysts from Mawutu, Hsinchu, Taiwan: Geochemical Characteristics and Implications for Regional Tectonic | Cheng-Shing Chiang |
| SMP32-P04 | Petrogenesis and Geochemistry of chromitite and host peridotite of the Sapat mafic-ultramafic Complex, Kohistan Island Arc, north Pakistan: Implications for tectonic evolution and mineralization | Safdar Khan |
| SMP32-P05 | Metamorphic evolution and U-Pb apatite geochronology of the Metamorphic Sole Complex of the Muslim Bagh Ophiolitic Sequence | HAFIZ U. REHMAN |
| SMP32-P06 | FEniCS-SZ: An online community tool for two-dimensional thermal modeling of subduction zones | Cian R Wilson |
| SMP32-P07 | Typical Geophysical Phenomena of Craton Margin Ocean Basin Evolution Controlling the Sedimentary Filling Regularity of Carbonate Platforms: A Case Study of Suprasalt Carbonate Strata in the Fuman Area, Tarim Basin, China | Dong Wang |
| SMP32-P08 | Zircon U-Pb dating and Hf isotopes of Cenozoic igneous rocks from eastern West Java, Indonesia | WAN HSIN LU |
| SMP32-P09 | A Newly Recognized ~1.75Ga Metasomatic Event in the Southwestern Yeongnam Massif: Constraints from Titanite U-Pb Dating | Yewon Kwon |
| SMP32-P10 | Late Triassic high-temperature metamorphism in the Buan–Gochang area, southwestern Gyeonggi Massif, South Korea: Implication for the Triassic tectono-thermal evolution of the southern Korean Peninsula | Ji Wan Jeong |
| SMP32-P11 | Boron and Lithium Isotope Variations in the New Georgia Group, Solomon Islands: Implications for Magma Genesis and Subduction Components | Yung-Hsin Liu |
| SMP32-P12 | Miocene sediments provenance of Penghu Islands, Taiwan: New constraints from detrital zircon U-Pb-Hf isotopes | Tien-Lin Shih |
| SMP32-P13 | Sequence sedimentary filling model under the background of differential uplift : A case study of Middle Ordovician in northern slope of Tazhong area | Mengxiang Yang |