Geochronology, geochemical characteristics, and tectonic significance of the granites, Menghewula, Southern Great Xing’an range
The Menghewula region in the southern Great Xing’an range is situated in the superposition area of the Paleo-Asian Oceanic metallogenic domain and the Western Pacific Metallogenic Domain. In this study, we carried out petrography, rock geochemistry, zircon U–Pb chronology and Lu–Hf isotope studies....
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| Language: | English |
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De Gruyter
2025-08-01
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| Series: | Open Geosciences |
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| Online Access: | https://doi.org/10.1515/geo-2025-0832 |
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| author | Yue Haixin Yu Henan Sun Zhenjun He Yanping Yu Yingbo |
| author_facet | Yue Haixin Yu Henan Sun Zhenjun He Yanping Yu Yingbo |
| author_sort | Yue Haixin |
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| description | The Menghewula region in the southern Great Xing’an range is situated in the superposition area of the Paleo-Asian Oceanic metallogenic domain and the Western Pacific Metallogenic Domain. In this study, we carried out petrography, rock geochemistry, zircon U–Pb chronology and Lu–Hf isotope studies. The results show that granite porphyry and biotite adamellite belong to the weakly peraluminous calc-alkaline. Zircons from both rocks are magmatic in origin, with zircon U-Pb ages of 135.60 ± 0.29 Ma and 134.33 ± 0.28 Ma, respectively, and belong to Early Cretaceous granites. The ε
Hf(t) of zircons in the two rocks are all positive (4.50–9.34), and they have younger two-stage model ages (595–904 Ma), which indicate that granitic magmatic material may have originated from the newly formed young crustal materials derived from the depleted mantle in Neoproterozoic. These rocks formed in a post-collisional extensional environment, and were influenced by the subduction and rollback of Paleo-Pacific plate. This study provides scientific basis for the relationship between magmatic evolution and mineralization in the region. |
| format | Article |
| id | doaj-art-dfd14397c0b94c2d8fd7a7fe226ed324 |
| institution | Kabale University |
| issn | 2391-5447 |
| language | English |
| publishDate | 2025-08-01 |
| publisher | De Gruyter |
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| series | Open Geosciences |
| spelling | doaj-art-dfd14397c0b94c2d8fd7a7fe226ed3242025-08-20T04:02:32ZengDe GruyterOpen Geosciences2391-54472025-08-011717163010.1515/geo-2025-0832Geochronology, geochemical characteristics, and tectonic significance of the granites, Menghewula, Southern Great Xing’an rangeYue Haixin0Yu Henan1Sun Zhenjun2He Yanping3Yu Yingbo4Institute of Disaster Prevention, Sanhe 065201, Hebei, ChinaInstitute of Disaster Prevention, Sanhe 065201, Hebei, ChinaInstitute of Disaster Prevention, Sanhe 065201, Hebei, ChinaInstitute of Disaster Prevention, Sanhe 065201, Hebei, ChinaCores and Samples Center of Natural Resources, China Geological Survey, Sanhe 065201, Hebei, ChinaThe Menghewula region in the southern Great Xing’an range is situated in the superposition area of the Paleo-Asian Oceanic metallogenic domain and the Western Pacific Metallogenic Domain. In this study, we carried out petrography, rock geochemistry, zircon U–Pb chronology and Lu–Hf isotope studies. The results show that granite porphyry and biotite adamellite belong to the weakly peraluminous calc-alkaline. Zircons from both rocks are magmatic in origin, with zircon U-Pb ages of 135.60 ± 0.29 Ma and 134.33 ± 0.28 Ma, respectively, and belong to Early Cretaceous granites. The ε Hf(t) of zircons in the two rocks are all positive (4.50–9.34), and they have younger two-stage model ages (595–904 Ma), which indicate that granitic magmatic material may have originated from the newly formed young crustal materials derived from the depleted mantle in Neoproterozoic. These rocks formed in a post-collisional extensional environment, and were influenced by the subduction and rollback of Paleo-Pacific plate. This study provides scientific basis for the relationship between magmatic evolution and mineralization in the region.https://doi.org/10.1515/geo-2025-0832rock element geochemical analysisgranite chronologysubduction of paleo-pacific plate |
| spellingShingle | Yue Haixin Yu Henan Sun Zhenjun He Yanping Yu Yingbo Geochronology, geochemical characteristics, and tectonic significance of the granites, Menghewula, Southern Great Xing’an range Open Geosciences rock element geochemical analysis granite chronology subduction of paleo-pacific plate |
| title | Geochronology, geochemical characteristics, and tectonic significance of the granites, Menghewula, Southern Great Xing’an range |
| title_full | Geochronology, geochemical characteristics, and tectonic significance of the granites, Menghewula, Southern Great Xing’an range |
| title_fullStr | Geochronology, geochemical characteristics, and tectonic significance of the granites, Menghewula, Southern Great Xing’an range |
| title_full_unstemmed | Geochronology, geochemical characteristics, and tectonic significance of the granites, Menghewula, Southern Great Xing’an range |
| title_short | Geochronology, geochemical characteristics, and tectonic significance of the granites, Menghewula, Southern Great Xing’an range |
| title_sort | geochronology geochemical characteristics and tectonic significance of the granites menghewula southern great xing an range |
| topic | rock element geochemical analysis granite chronology subduction of paleo-pacific plate |
| url | https://doi.org/10.1515/geo-2025-0832 |
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