Article
Geosciences, Multidisciplinary
Soenke Brandt, Reiner Klemd, Hanqiang Xie, Patrick Bobek
Summary: The Epupa Complex in northern Namibia is part of the Archean Congo Craton and recent studies reveal the poorly-known Paleoproterozoic to Mesoproterozoic evolution of this area. New petrological and geochronological data show three distinct high-grade metamorphic events in the metasedimentary migmatites, with the oldest event around 1740-1720 Ma. These events indicate a change in the geotectonic position of the Epupa Complex over time.
AMERICAN JOURNAL OF SCIENCE
(2021)
Article
Geology
Xin Wei, Xin Jin, Yu-Xiu Zhang, Li-Long Yan
Summary: This study used phase equilibrium modeling to calculate the peak metamorphic conditions of Baqing eclogite to be 26.5 +/- 1 kbar and 730 +/- 60 degrees C, which confirms the previous calculation results. The eclogites of Baqing, Central Qiangtang metamorphic belt, and Changning-Menglian metamorphic belt show similar P-T paths, indicating similar heating and burial processes during Triassic subduction of the Shuanghu Paleo-Tethyan oceanic plate.
INTERNATIONAL GEOLOGY REVIEW
(2023)
Article
Geosciences, Multidisciplinary
Massimo Scodina, Gabriele Cruciani, Marcello Franceschelli
Summary: The Posada Valley amphibolites in Variscan Sardinia underwent high-pressure stages and re-equilibration. The P-T conditions are complex, indicating a subduction environment of oceanic crust.
COMPTES RENDUS GEOSCIENCE
(2021)
Article
Geology
Chen AnPing, Zhang HongFu
Summary: Slab subduction and exhumation are crucial in plate tectonic theory and solid earth science. Decoding the P-T-t path of high pressure-ultrahigh pressure metamorphic rocks is important for understanding the tectonic evolution of subduction/collision orogens. Petrographic observation, mineral composition analysis, and geochronology methods are applied to decipher the metamorphic ages and conditions.
ACTA PETROLOGICA SINICA
(2023)
Article
Geosciences, Multidisciplinary
Yang Si, Rongfeng Ge, Teng Zhou, Yue Wang
Summary: This study examines garnet amphibolites from the Dunhuang Block in northwestern China, revealing two distinct metamorphic events in the late Paleoproterozoic and Paleozoic based on mineral dating, with evidence of different P-T conditions.
PRECAMBRIAN RESEARCH
(2022)
Article
Geochemistry & Geophysics
Drazen Balen, Hans-Joachim Massonne
Summary: The metamorphic sole of the Jurassic Krivaja-Konjuh ultramafic massif in central Bosnia and Herzegovina consists mainly of garnet amphibolites and pargasite amphibolites, with different P-T paths indicating distinct formation histories. The rocks formed during intra-oceanic subduction, with pargasite amphibolites cooling by subducting oceanic crust and garnet amphibolites exhumed in a subduction channel before coming in contact with the former.
Article
Geology
Yingde Jiang, Pavla Stipska, Karel Schulmann, Carmen Aguilar, Sheng Wang, Robert Anczkiewicz, Jian Zhang, Pengfei Li, Francis Chopin
Summary: The study of a representative region in the central part of the Chinese Altai reveals a complex relationship between Barrovian- and Buchan-type metamorphic series, indicating different evolutionary processes of metamorphism in the geological history.
JOURNAL OF METAMORPHIC GEOLOGY
(2022)
Article
Geochemistry & Geophysics
Jun-Sheng Lu, Ming-Guo Zhai, Xu Kong, Xiao-Ping Long, Qiang Feng
Summary: The Huoqiu Metamorphic Complex in the southeastern part of the North China Craton consists mainly of meta-sedimentary rocks and minor meta-granitoids. The metamorphic rocks include metapelites, leptynite, amphibolite, marble, and banded iron formations. The pressure-temperature paths of the metapelites are similar to high-grade metamorphic rocks in the Jiao-Liao-Ji/Jiaoliao Mobile Belt.
Article
Geochemistry & Geophysics
G. Cruciani, M. Franceschelli, R. Carosi, C. Montomoli
Summary: This study investigates micaschists in the southeastern sector of the Posada-Asinara Shear Zone in the Axial Zone of the Sardinia Variscan chain to reconstruct their metamorphic evolution and P-T history. The micaschists experienced polyphase ductile deformation and are characterized by abundant garnet crystals with strong compositional zoning. The P-T path of the micaschists is determined to be clockwise and consists of two separate stages.
Article
Geology
Haozhong Zhu, Zhonghua Tian, Pinghua Liu, Wenyong Duan, Zhanghuang Ye
Summary: The interpretation and inversion of P-T paths of high-pressure and ultrahigh-pressure metamorphic rocks in the Sulu orogen provide insights into the subduction and exhumation histories of the region. This study presents the P-T paths of HP eclogites using petrography, mineral chemistry, and pseudosection modelling. The results show clockwise P-T paths with peak conditions of P >= 21.3 kbar, T >= 755 degrees C and P >= 23.0 kbar, T >= 871 degrees C. Combined with geological data, the findings suggest subduction of the South China plate to the North China craton before 240 Ma, followed by HP eclogite metamorphism and subsequent exhumation with partial melting around 220-200 Ma.
INTERNATIONAL GEOLOGY REVIEW
(2023)
Article
Geochemistry & Geophysics
Nanqing Xu, Guochun Zhao, Hui C. G. Zhang, Jinlong Yao
Summary: This study investigates the metamorphic evolution of the Jianping Complex in the North China Craton, using petrographic observations, phase equilibria modelling, and U-Pb dating. The results indicate an anticlockwise P-T path for the granulites, with peak stage conditions of 940-1000°C/8.0-8.5 kbar. U-Pb dating suggests a short interval between emplacement and metamorphism. Considering the lithological, metamorphic, geochronological, and structural characteristics, the mantle plume model is favored.
Article
Geosciences, Multidisciplinary
Long-Long Gou, Xiao-Ping Long, Hao-Yu Yan, Tian-Chu Shu, Jing-Yu Wang, Xiao-Fei Xu, Feng Zhou, Zhi-Bo Tian
Summary: The North Himalayan gneiss domes provide important clues for understanding deeper crustal processes and the effects of continent collisional orogenesis. This study focuses on the Ramba gneiss dome and examines the garnet-staurolite-two-mica schist to determine its metamorphic history and timing. The results suggest that the metamorphism occurred during the Eocene epoch and was related to crustal thickening and subsequent exhumation processes.
FRONTIERS IN EARTH SCIENCE
(2022)
Review
Environmental Sciences
Owen M. Weller, Catherine M. Mottram, Marc R. St-Onge, Charlotte Moller, Rob Strachan, Toby Rivers, Alex Copley
Summary: The similarities and differences between the Himalaya-Tibetan orogen and ancient mountain belts highlight the key factors controlling mountain building. Foreland rheology is considered a critical factor in determining the effectiveness of comparing orogens.
NATURE REVIEWS EARTH & ENVIRONMENT
(2021)
Article
Geology
F. C. Yan, Q. Liu, X. Y. Ma, M. He
Summary: The P-T-t path of the Raobazhai garnet pyroxenite recorded a complete process of subduction (ultra-high pressure metamorphism)-collision-exhumation (decompression heating process, around 227Ma) -uplift (decompression cooling process, around 208-202Ma). Through SIMS U-Pb dating, different intercept ages were obtained, revealing the timing of different metamorphic stages in the area.
ACTA PETROLOGICA SINICA
(2021)
Article
Geochemistry & Geophysics
Vincent van Hinsberg, Chris Yakymchuk, Angunguak Thomas Kleist Jepsen, Christopher L. Kirkland, Kristoffer Szilas
Summary: This study uses thermodynamic modelling to constrain the conditions of corundum formation in southern Greenland, indicating that corundum saturation is the result of residual enrichment rather than Al mobilisation. A complex interplay among lithologies involved in corundum formation is highlighted, demonstrating that corundum formation is a predictable part of geological history.
Editorial Material
Geosciences, Multidisciplinary
Liu Yican, Deng Liangpeng, Gu Xiaofeng, Groppo Chiara, Rolfo Franco
ACTA GEOLOGICA SINICA-ENGLISH EDITION
(2016)
Article
Geology
G. Rapa, C. Groppo, P. Mosca, F. Rolfo
JOURNAL OF METAMORPHIC GEOLOGY
(2016)
Article
Geochemistry & Geophysics
Chiara Groppo, Franco Rolfo, Himanshu K. Sachan, Santosh K. Rai
Article
Geosciences, Multidisciplinary
Himanshu Kumar Sachan, Aditya Kharya, P. Chandra Singh, Franco Rolfo, Chiara Groppo, Sameer K. Tiwari
JOURNAL OF ASIAN EARTH SCIENCES
(2017)
Correction
Geochemistry & Geophysics
Chiara Groppo, Franco Rolfo, Daniele Castelli, Pietro Mosca
JOURNAL OF PETROLOGY
(2017)
Article
Geochemistry & Geophysics
Chiara Groppo, Franco Rolfo, Daniele Castelli, Pietro Mosca
JOURNAL OF PETROLOGY
(2017)
Article
Geology
Franco Rolfo, Chiara Groppo, Pietro Mosca
ITALIAN JOURNAL OF GEOSCIENCES
(2017)
Article
Geology
Giovanni Vezzoli, Bruno Lombardo, Franco Rolfo
ITALIAN JOURNAL OF GEOSCIENCES
(2017)
Article
Geosciences, Multidisciplinary
Liang-Peng Deng, Yi-Can Liu, Xiao-Feng Gu, Chiara Groppo, Franco Rolfo
GEOSCIENCE FRONTIERS
(2018)
Article
Multidisciplinary Sciences
Frederic Girault, Lok Bijaya Adhikari, Christian France-Lanord, Pierre Agrinier, Bharat P. Koirala, Mukunda Bhattarai, Sudhan S. Mahat, Chiara Groppo, Franco Rolfo, Laurent Bollinger, Frederic Perrier
NATURE COMMUNICATIONS
(2018)
Article
Geosciences, Multidisciplinary
Praveen Chandra Singh, Himanshu K. Sachan, Aditya Kharya, Franco Rolfo, Chiara Groppo, Saurabh Singhal, Sameer K. Tiwari, Shashi Ranjan Rai
JOURNAL OF ASIAN EARTH SCIENCES
(2020)
Article
Geochemistry & Geophysics
Yang Li, Yang Yang, Yi-Can Liu, Chiara Groppo, Franco Rolfo
Article
Geochemistry & Geophysics
Yang Yang, Yi-Can Liu, Yang Li, Chiara Groppo, Franco Rolfo
Article
Geology
Chiara Groppo, Giulia Rapa, Maria Luce Frezzotti, Franco Rolfo
Summary: Studying the prograde metamorphism of calcareous pelites reveals that even a small amount of calcite in the protolith can greatly affect the final mineral assemblages and melt productivity. Comparison with natural samples from the Himalayan metamorphic core validates the reliability of the modelling results.
JOURNAL OF METAMORPHIC GEOLOGY
(2021)
Article
Environmental Sciences
Chiara Groppo, Franco Rolfo, Maria Luce Frezzotti
Summary: The outgassing of CO2 during collisional orogeny can be explained by the generation of CO2-rich fluids and hydrosaline brines. Thermodynamic modeling shows that these fluids have different properties and mobility through the crust, and can contribute to carbon mobilization.
COMMUNICATIONS EARTH & ENVIRONMENT
(2022)
Article
Geochemistry & Geophysics
Huichuan Liu, Alan R. Hastie, Chiara Maria Petrone
Summary: This study conducted isotope analyses on two ocean island basalt (OIB)-associated enriched mafic intrusions in the Yunnan-Burma region, and found that these rocks may have originated from the subduction recycling of marine sediments and altered oceanic crust.
Article
Geochemistry & Geophysics
L. Notini, M. Scambelluri, A. Tommasi, A. Zanetti, F. Ferri, A. Rodriguez-Vargas, E. Rampone
Summary: This study provides important petrologic information on the mantle wedge above an active subduction zone in Southern Colombia. The researchers analyzed a unique suite of rock samples and found evidence of hydration, metasomatism, and partial melting in the mantle wedge. They also observed variations in lithotypes, textures, and mineral abundance, indicating different interactions with melts and fluids. This study sheds light on the complex petrological processes occurring in the mantle wedge and contributes to our understanding of subduction zone dynamics.
Article
Geochemistry & Geophysics
Sourav Bhattacharjee, Aniket Chakrabarty, Roger H. Mitchell, Suresh Chandra Patel, Evgeniy N. Kozlov, Ekaterina N. Fomina, Monojit Dey, Supratim Pal
Summary: The Hogenakkal complex in India consists of silicate-rich and silicate-poor carbonatites and clinopyroxenites. The formation of carbonatite is influenced by silicate minerals. The carbohydrothermal mineralization in the carbonatites is induced by magma-derived fluids and interactions with the surrounding rocks.
Article
Geochemistry & Geophysics
Jia-Min Wang, Kyle Patrick Larson, Jin-Jiang Zhang, Liang Zhao, Fu-Yuan Wu
Summary: The role of collisional belts in the global carbon budget is controversial. This study reveals a previously unrecognized carbon source in the collisional orogen of the Himalayas, where metamorphism of carbonate-bearing rocks in the hanging wall resulted in significant CO2 degassing.
Article
Geochemistry & Geophysics
Joseph Martial Akame, Elson Paiva Oliveira, Vinciane Debaille, Marc Poujol, Bernhard Schulz, Dieudonnee Bisso, Fabien Humbert, Serge Parfait Koah Na Lebogo, Philmont Zo'o Zame
Summary: Archean granitoids play key roles in the crustal evolution and can provide important insights into early geologic processes.
Article
Geochemistry & Geophysics
Xiguang Huang, Jun He, Jingxin Zhao, Jingzhao Dou, Weiyong Li, Aimin Hu, Ge Liu, Yiru Ji, Fukun Chen, Shuangqing Li
Summary: This study investigates the zircon ages and whole-rock geochemical data of Late Paleozoic magmatic rocks in the Western Yunnan Tethyan belt to identify the origin and mechanism of mantle melting. The results suggest that these magmatic rocks may originate from different mantle domains that were metasomatized by slab-derived fluids and sediment-derived melts.