Crustal architecture and metallogeny associated with the Paleo-Tethys evolution in the Eastern Kunlun Orogenic Belt, Northern Tibetan Plateau
The Eastern Kunlun Orogenic Belt (EKOB) in the Northern Tibet Plateau hosts a wide variety of metal deposits related to the Late Paleozoic to Mesozoic magmatism. In this study, we investigate the spatio-temporal distribution of the Late Paleozoic to Mesozoic granitic rocks and associated metal depos...
| Main Authors: | , , , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2023-11-01
|
| Series: | Geoscience Frontiers |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S1674987123001214 |
| _version_ | 1797659948097732608 |
|---|---|
| author | Xinming Zhang Xu Zhao Lebing Fu Yanjun Li Andreas Kamradt M. Santosh Chongwen Xu Xiaokun Huang Gregor Borg Junhao Wei |
| author_facet | Xinming Zhang Xu Zhao Lebing Fu Yanjun Li Andreas Kamradt M. Santosh Chongwen Xu Xiaokun Huang Gregor Borg Junhao Wei |
| author_sort | Xinming Zhang |
| collection | DOAJ |
| description | The Eastern Kunlun Orogenic Belt (EKOB) in the Northern Tibet Plateau hosts a wide variety of metal deposits related to the Late Paleozoic to Mesozoic magmatism. In this study, we investigate the spatio-temporal distribution of the Late Paleozoic to Mesozoic granitic rocks and associated metal deposits in the EKOB and provide a comprehensive compilation of the geochronological, geochemical and isotopic data on these rocks. We compute regional zircon Hf isotope and crustal thickness maps from the data, based on which a comprehensive model is proposed involving subduction (ca. 270–240 Ma), continental collision (ca. 240–224 Ma), and post-collisional extension (ca. 224–200 Ma) for the Late Paleozoic to Mesozoic Paleo-Tethys evolution in the EKOB.Zircon Hf isotopic and crustal thickness mapping of Late Paleozoic to Mesozoic magmatic rocks was carried out to evaluate their spatio-temporal and genetic links with the regional metallogeny. The polymetallic Fe-skarn and porphyry Cu (Mo) deposits in the EKOB are located above the Moho uplift region, featuring a comparatively thin crust. Granites associated with porphyry Cu (Mo) and polymetallic Fe skarn mineralization are commonly characterized by high εHf(t) and younger TDMc values, whereas granite related to Cu-Mo-Sn skarn deposits exhibit more variable εHf(t) values, TDMc ages, and the crust thickness, which suggest that more crustal materials contributed to the formation of Cu-Mo-Sn skarn deposits than those for porphyry Cu (Mo) and polymetallic Fe skarn mineralization. In contrast, vein-type Au deposits are located primarily where the Moho surface displays a depression, i.e., where the continental crust is relatively thick. The magmatic rocks associated with Au mineralization are characterized by low εHf(t) and high TDMc values, representing reworked ancient crustal components, similar to those associated with porphyry Mo and epithermal Ag-Pb-Zn-(Au) deposits. Our study indicates that the emplacement of magmatic-hydrothermal deposits was controlled by the crustal structure and magma sources. |
| first_indexed | 2024-03-11T18:22:40Z |
| format | Article |
| id | doaj.art-ef87091ab4a24f43bd6eaedb70d345a0 |
| institution | Directory Open Access Journal |
| issn | 1674-9871 |
| language | English |
| last_indexed | 2024-03-11T18:22:40Z |
| publishDate | 2023-11-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Geoscience Frontiers |
| spelling | doaj.art-ef87091ab4a24f43bd6eaedb70d345a02023-10-15T04:37:19ZengElsevierGeoscience Frontiers1674-98712023-11-01146101654Crustal architecture and metallogeny associated with the Paleo-Tethys evolution in the Eastern Kunlun Orogenic Belt, Northern Tibetan PlateauXinming Zhang0Xu Zhao1Lebing Fu2Yanjun Li3Andreas Kamradt4M. Santosh5Chongwen Xu6Xiaokun Huang7Gregor Borg8Junhao Wei9School of Earth Resource, China University of Geoscience, Wuhan 430074, China; Institute of Geosciences and Geography, Martin Luther University Halle-Wittenberg, Halle (Saale) 06120, GermanySchool of Earth Resource, China University of Geoscience, Wuhan 430074, China; CAS Key Laboratory of Mineralogy and Metallogeny/Guangdong Provincial Key Laboratory of Mineral Physics and Materials, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China; Corresponding author at: Key Laboratory of Mineral Physics and Materials, Guangzhou Institute of Geochemistry, No. 511 Kehua Street, Tianhe District, Guangzhou 510640, China.School of Earth Resource, China University of Geoscience, Wuhan 430074, ChinaSchool of Earth Resource, China University of Geoscience, Wuhan 430074, ChinaInstitute of Geosciences and Geography, Martin Luther University Halle-Wittenberg, Halle (Saale) 06120, GermanySchool of Earth Science and Resources, China University of Geosciences, Beijing 100083, China; Department of Earth Sciences, University of Adelaide, Adelaide, SA 5005, AustraliaSchool of Earth Resource, China University of Geoscience, Wuhan 430074, ChinaSchool of Earth Resource, China University of Geoscience, Wuhan 430074, ChinaInstitute of Geosciences and Geography, Martin Luther University Halle-Wittenberg, Halle (Saale) 06120, GermanySchool of Earth Resource, China University of Geoscience, Wuhan 430074, ChinaThe Eastern Kunlun Orogenic Belt (EKOB) in the Northern Tibet Plateau hosts a wide variety of metal deposits related to the Late Paleozoic to Mesozoic magmatism. In this study, we investigate the spatio-temporal distribution of the Late Paleozoic to Mesozoic granitic rocks and associated metal deposits in the EKOB and provide a comprehensive compilation of the geochronological, geochemical and isotopic data on these rocks. We compute regional zircon Hf isotope and crustal thickness maps from the data, based on which a comprehensive model is proposed involving subduction (ca. 270–240 Ma), continental collision (ca. 240–224 Ma), and post-collisional extension (ca. 224–200 Ma) for the Late Paleozoic to Mesozoic Paleo-Tethys evolution in the EKOB.Zircon Hf isotopic and crustal thickness mapping of Late Paleozoic to Mesozoic magmatic rocks was carried out to evaluate their spatio-temporal and genetic links with the regional metallogeny. The polymetallic Fe-skarn and porphyry Cu (Mo) deposits in the EKOB are located above the Moho uplift region, featuring a comparatively thin crust. Granites associated with porphyry Cu (Mo) and polymetallic Fe skarn mineralization are commonly characterized by high εHf(t) and younger TDMc values, whereas granite related to Cu-Mo-Sn skarn deposits exhibit more variable εHf(t) values, TDMc ages, and the crust thickness, which suggest that more crustal materials contributed to the formation of Cu-Mo-Sn skarn deposits than those for porphyry Cu (Mo) and polymetallic Fe skarn mineralization. In contrast, vein-type Au deposits are located primarily where the Moho surface displays a depression, i.e., where the continental crust is relatively thick. The magmatic rocks associated with Au mineralization are characterized by low εHf(t) and high TDMc values, representing reworked ancient crustal components, similar to those associated with porphyry Mo and epithermal Ag-Pb-Zn-(Au) deposits. Our study indicates that the emplacement of magmatic-hydrothermal deposits was controlled by the crustal structure and magma sources.http://www.sciencedirect.com/science/article/pii/S1674987123001214Hf-isotopic mappingCrustal thicknessMetallogenyTectonic evolutionCrustal architectureEastern Kunlun Orogenic Belt |
| spellingShingle | Xinming Zhang Xu Zhao Lebing Fu Yanjun Li Andreas Kamradt M. Santosh Chongwen Xu Xiaokun Huang Gregor Borg Junhao Wei Crustal architecture and metallogeny associated with the Paleo-Tethys evolution in the Eastern Kunlun Orogenic Belt, Northern Tibetan Plateau Geoscience Frontiers Hf-isotopic mapping Crustal thickness Metallogeny Tectonic evolution Crustal architecture Eastern Kunlun Orogenic Belt |
| title | Crustal architecture and metallogeny associated with the Paleo-Tethys evolution in the Eastern Kunlun Orogenic Belt, Northern Tibetan Plateau |
| title_full | Crustal architecture and metallogeny associated with the Paleo-Tethys evolution in the Eastern Kunlun Orogenic Belt, Northern Tibetan Plateau |
| title_fullStr | Crustal architecture and metallogeny associated with the Paleo-Tethys evolution in the Eastern Kunlun Orogenic Belt, Northern Tibetan Plateau |
| title_full_unstemmed | Crustal architecture and metallogeny associated with the Paleo-Tethys evolution in the Eastern Kunlun Orogenic Belt, Northern Tibetan Plateau |
| title_short | Crustal architecture and metallogeny associated with the Paleo-Tethys evolution in the Eastern Kunlun Orogenic Belt, Northern Tibetan Plateau |
| title_sort | crustal architecture and metallogeny associated with the paleo tethys evolution in the eastern kunlun orogenic belt northern tibetan plateau |
| topic | Hf-isotopic mapping Crustal thickness Metallogeny Tectonic evolution Crustal architecture Eastern Kunlun Orogenic Belt |
| url | http://www.sciencedirect.com/science/article/pii/S1674987123001214 |
| work_keys_str_mv | AT xinmingzhang crustalarchitectureandmetallogenyassociatedwiththepaleotethysevolutionintheeasternkunlunorogenicbeltnortherntibetanplateau AT xuzhao crustalarchitectureandmetallogenyassociatedwiththepaleotethysevolutionintheeasternkunlunorogenicbeltnortherntibetanplateau AT lebingfu crustalarchitectureandmetallogenyassociatedwiththepaleotethysevolutionintheeasternkunlunorogenicbeltnortherntibetanplateau AT yanjunli crustalarchitectureandmetallogenyassociatedwiththepaleotethysevolutionintheeasternkunlunorogenicbeltnortherntibetanplateau AT andreaskamradt crustalarchitectureandmetallogenyassociatedwiththepaleotethysevolutionintheeasternkunlunorogenicbeltnortherntibetanplateau AT msantosh crustalarchitectureandmetallogenyassociatedwiththepaleotethysevolutionintheeasternkunlunorogenicbeltnortherntibetanplateau AT chongwenxu crustalarchitectureandmetallogenyassociatedwiththepaleotethysevolutionintheeasternkunlunorogenicbeltnortherntibetanplateau AT xiaokunhuang crustalarchitectureandmetallogenyassociatedwiththepaleotethysevolutionintheeasternkunlunorogenicbeltnortherntibetanplateau AT gregorborg crustalarchitectureandmetallogenyassociatedwiththepaleotethysevolutionintheeasternkunlunorogenicbeltnortherntibetanplateau AT junhaowei crustalarchitectureandmetallogenyassociatedwiththepaleotethysevolutionintheeasternkunlunorogenicbeltnortherntibetanplateau |