Article
Geochemistry & Geophysics
Sheng-Peng Wang, Zhong-Yuan Ren, Alexander R. L. Nichols, Tserendash Narantsetseg, Qing-Lin Zhang, Le Zhang, Chao Yuan
Summary: The Cenozoic basalts in eastern China are believed to be related to the mantle wedge beneath East Asia. However, the basalts in central and eastern Mongolia, which have similar characteristics, are located far from this mantle system. By analyzing the compositions of basalts, olivines, spinels, and olivine-hosted melt inclusions from Mongolia, researchers found high temperatures and thermal anomalies in the mantle sources feeding the volcanism. They propose a branched plume model to explain the similarity of geochemistry and eruption ages for basalts on both sides of the Daxinganlin-Taihangshan gravity lineament (DTGL).
Article
Geology
Long Yuan, Quanshu Yan
Summary: Shortly after the cessation of the Cenozoic seafloor spreading in the South China Sea, a period of basaltic magmatism occurred in the Indochina Peninsula. This study provides new ages and in situ major and trace element compositions for xenoliths and olivine xenocrysts from basalt flows in Thailand, revealing the properties and origin of the lithospheric mantle under the Indochina Peninsula.
INTERNATIONAL GEOLOGY REVIEW
(2023)
Article
Geochemistry & Geophysics
Hongbin Lu, Jianshe Lei, Dapeng Zhao, Yi-Gang Xu, Changqing Sun, Xiaohui Hu
Summary: A high-resolution velocity and anisotropy model of the uppermost mantle in the Hainan Island and surrounding areas was obtained through tomographic inversion. The model reveals obvious velocity and anisotropic structural features related to the distribution of Quaternary volcanic rocks on the surface. The results provide new insights into the formation mechanism of the Hainan-Leizhou and Weizhou volcanoes.
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
(2022)
Article
Geochemistry & Geophysics
Yung-Tan Lee, Pin-Chang Chou, Kung-Suan Ho, Yu-Wei Tsai, Ying-Ju Chang
Summary: Based on the geochemical characteristics and isotopic ratios of the basalts, it is suggested that the basalts from Hainan Island and Leizhou Peninsula are derived from different magma series, possibly generated by varying degrees of partial melting.
GEOCHEMISTRY INTERNATIONAL
(2021)
Article
Geochemistry & Geophysics
Shengping Qian, Esteban Gazel, Alexander R. L. Nichols, Hao Cheng, Le Zhang, Vincent J. Salters, Jie Li, Xiaoping Xia, Huaiyang Zhou
Summary: This study on the lavas from seamounts in the South China Sea confirms that late Cenozoic lavas originate from recycled young oceanic crust and sediments, with an olivine-dominated mantle source and no high-He-3/He-4 mantle plume component. Late Cenozoic magmatism may be related to upwelling instabilities from the mantle transition zone, triggered by a stagnant slab. These findings provide additional evidence for the development of global mantle heterogeneities through the storage and recycling of crustal materials near or within the mantle transition zone.
GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS
(2021)
Review
Geosciences, Multidisciplinary
Jack F. Ward, Gideon Rosenbaum, Teresa Ubide, Jonny Wu, John T. Caulfield, Mike Sandiford, Derya Guerer
Summary: Studies have shown that intraplate volcanoes in East Asia are likely formed by decompression melting associated with convective upwellings at the edges of the Pacific and Philippine Sea slabs, rather than mantle plume activity or typical subduction zone slab metasomatism. The Quaternary rollback of the Philippine slab may also be responsible for volcanic activity at Jeju, located at the leading edge of the Philippine Sea slab.
EARTH-SCIENCE REVIEWS
(2021)
Article
Geochemistry & Geophysics
Dapeng Zhao, Genti Toyokuni, Kenkichi Kurata
Summary: The study suggests that there are widespread low-Vp anomalies in the whole mantle beneath the Southeast Asian basalt province, possibly indicating the presence of a cluster of mantle plumes. The Hainan plume may be the strongest, but it is slowing down, and other mantle plumes beneath Cenozoic volcanoes in the region may be dying or already dead.
GEOPHYSICAL JOURNAL INTERNATIONAL
(2021)
Article
Geochemistry & Geophysics
Qi-Wei Hu, Sheng-Wang Mei, Le Zhang, Zhong-Yuan Ren
Summary: In this study, the trace element and Pb-Sr isotope compositions of olivine-hosted melt inclusions in Hainan basalts were analyzed to understand the mantle source and the mixing processes. The results showed that FOZO, EM2, and EM1 are the main mantle components in the Hainan mantle plume, while HIMU components play a minor role. Recycled oceanic crust and sediments were found to have a significant contribution to the mantle source.
Article
Geosciences, Multidisciplinary
Tilahun Tamirat, Takele Chekol, Daniel Meshesha
Summary: Petrography and geochemical data of basaltic lavas from the north western Ethiopian plateau reveal three distinct groups: Alkali, tholeiitic, and transitional basalts. These groups show significant variations in major and trace element compositions, with the alkali and transitional basalts resembling oceanic island basalts and the tholeiitic basalts showing similarities to enriched mid oceanic ridge basalts. This suggests a complex mantle source involving components from OIB, E-MORB, and SCLM, leading to considerable source heterogeneity within and among the basaltic groups.
JOURNAL OF AFRICAN EARTH SCIENCES
(2021)
Article
Geochemistry & Geophysics
Genti Toyokuni, Dapeng Zhao, Kenkichi Kurata
Summary: We have presented detailed 3-D images of the P wave velocity structure beneath Southeast Asia and surrounding regions. By applying an improved method of global seismic tomography to millions of arrival times, we were able to reveal the presence of a low-velocity zone beneath the Hainan hotspot and a low-velocity anomaly beneath the subducted Australian slab. Our findings provide insight into the dynamics of mantle plumes and subduction processes.
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
(2022)
Article
Geosciences, Multidisciplinary
Shuang-Shuang Chen, Duo-Yang Wu, Rui Gao, Qiuming Cheng, Jia-Qi Liu
Summary: In this study, we analyze the major and trace element compositions, as well as the Sr isotopic compositions, of Leiqiong basaltic rocks to understand the source of the EM2-like reservoir beneath Southeast Asia. The olivine and plagioclase crystals show heterogeneity, suggesting the incorporation of multiple components. The calculated melts and the presence of OIB-type enriched compositions indicate the involvement of the Hainan mantle plume. The isotopically heterogeneous mantle source and the influence of recycled subduction-related fluids/melts are confirmed by the disequilibrium of Sr isotopic ratios.
FRONTIERS IN EARTH SCIENCE
(2023)
Article
Geosciences, Multidisciplinary
Shaohong Xia, Chaoyan Fan, Dawei Wang, Jinghe Cao, Fang Zhao
Summary: This study reveals the crustal structure of the Qiongdongnan Basin and the possible influence of the Hainan mantle plume. The results show slight to moderate crustal thinning in the Northern and Southern Rises of the basin, while the Central Depression exhibits hyperextension. The upper and lower crusts undergo brittle and ductile thinning, respectively. Furthermore, low-velocity conduits in the form of magmatic footprints of the Hainan mantle plume are identified in certain areas.
SCIENCE CHINA-EARTH SCIENCES
(2022)
Article
Geochemistry & Geophysics
Peng Guo, Ting Yang, Wen-Liang Xu, Bin Chen
Summary: ML models trained with major oxide data of experimental peridotite and pyroxenite melts can accurately predict the lithology of mantle sources for basaltic rocks. The study in Northeast China shows that pyroxenite dominates the mantle source of intraplate Cenozoic basaltic rocks in certain areas, while peridotite dominates in others, consistent with previous studies using different methods. These ML models have the potential to be applied to infer mantle source lithologies of basaltic rocks in other regions worldwide.
GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS
(2021)
Article
Geosciences, Multidisciplinary
Bin Wang, Chao-Ming Xie, Chris Yakymchuk, Yong-sheng Dong, Yu-hang Song, Meng-long Duan
Summary: Through petrography, whole-rock geochemistry, and U-Pb zircon geochronology, we divided the ultramafic-mafic rocks in the Tangjia-Sumdo greenstone belt into four groups based on their geochemical characteristics: depleted and tholeiitic mafic rocks, transitional mafic rocks, enriched and alkaline mafic rocks, and picritic ultramafic rocks. The crystallization ages of these rocks range from -272 Ma to -250 Ma. We propose that the depleted and tholeiitic mafic rocks represent normal oceanic crust, while the other three groups are fragments of an oceanic plateau formed by mid-late Permian mantle plume activity in the Sumdo Paleo-Tethys Ocean. We further suggest that the majority of the Tangjia-Sumdo greenstone belt represents a middle-late Permian oceanic plateau.
GEOSCIENCE FRONTIERS
(2023)
Article
Geochemistry & Geophysics
Yuanyuan Hua, Dapeng Zhao, Yi-Gang Xu
Summary: A detailed 3-D model of P wave velocity and azimuthal anisotropy beneath SE Asia is obtained through joint inversion of local earthquake arrival times and teleseismic relative travel-time residuals. The results reveal the penetration of the high-velocity subducting Australian slab through the mantle transition zone (MTZ), the existence of the Hainan mantle plume as a low-velocity anomaly beneath the MTZ, and the interaction between the Hainan plume and the stagnant slab in the MTZ. The findings provide important new insights into the complex mantle structure and dynamics of the SE Asian region.
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
(2022)
Article
Geography, Physical
Shengfa Liu, Hui Zhang, Aimei Zhu, Kunshan Wang, Min-Te Chen, Somkiat Khokiattiwong, Narumol Kornkanitnan, Xuefa Shi
QUATERNARY INTERNATIONAL
(2019)
Review
Geosciences, Multidisciplinary
Kui Wu, Jinnan Tong, Ian Metcalfe, Lei Liang, Yifan Xiao, Li Tian
EARTH-SCIENCE REVIEWS
(2020)
Article
Geosciences, Multidisciplinary
Xingquan Sun, Shengfa Liu, Xisheng Fang, Jingrui Li, Peng Cao, Guangtao Zhao, Somkiat Khokiattiwong, Narumol Kornkanitnan, Xuefa Shi
GEOLOGICAL JOURNAL
(2020)
Article
Environmental Sciences
Ying Wang, Xinqing Zou, Cong Peng, Shuqing Qiao, Teng Wang, Wenwen Yu, Somkiat Khokiattiwong, Narumol Kornkanitnan
MARINE POLLUTION BULLETIN
(2020)
Article
Geosciences, Multidisciplinary
I Metcalfe, J. L. Crowley
JOURNAL OF ASIAN EARTH SCIENCES
(2020)
Article
Geosciences, Multidisciplinary
Jingrui Li, Shengfa Liu, Xuefa Shi, Min-Te Chen, Hui Zhang, Aimei Zhu, Jingjing Cui, Somkiat Khokiattiwong, Narumol Kornkanitnan
PROGRESS IN EARTH AND PLANETARY SCIENCE
(2020)
Article
Geography, Physical
Yun Huang, Jule Xiao, Rong Xiang, Shengfa Liu, Somkiat Khokiattiwong, Narumol Kornkanitnan, Jiawei Fan, Ruilin Wen, Shengrui Zhang, Jianguo Liu
QUATERNARY INTERNATIONAL
(2020)
Article
Geography, Physical
Shengfa Liu, Wenxing Ye, Min-Te Chen, Hui-Juan Pan, Peng Cao, Hui Zhang, Somkiat Khokiattiwong, Narumol Kornkanitnan, Xuefa Shi
Summary: Studying marine sedimentary archives from the Indian Ocean has revealed the relationship between Indian monsoons, millennial-scale climate variability from Greenland ice cores, and the role of Atlantic meridional overturning circulation (AMOC) changes. The study presents evidence of sea surface temperature, salinity-driven changes, and age models from core samples in the Bay of Bengal, showing gradual surface warming and cooling during different periods. The research also suggests a link between weakened Indian Summer Monsoon and Northern Hemisphere cooling events, supporting the dynamic role of AMOC in driving teleconnections between the North Atlantic and Indian Ocean monsoon regions.
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
(2021)
Article
Geosciences, Multidisciplinary
Jingrui Li, Shengfa Liu, Xuefa Shi, Hui Zhang, Peng Cao, Xiaoyan Li, Hui-Juan Pan, Somkiat Khokiattiwong, Narumol Kornkanitnan
Summary: This study found that chemical weathering indexes reflect the control of Indian summer monsoon on weathering at millennial scales, but fail to accurately reflect the actual chemical weathering dynamics during the Holocene, possibly due to other factors such as grain size effect and regional differences.
FRONTIERS IN EARTH SCIENCE
(2021)
Article
Geosciences, Multidisciplinary
Shengfa Liu, Wenxing Ye, Peng Cao, Hui Zhang, Min-Te Chen, Xiaoyan Li, Jingrui Li, Hui-Juan Pan, Somkiat Khokiattiwong, Narumol Kornkanitnan, Xuefa Shi
Summary: The study reveals that climatic changes in the tropical Indian Ocean respond well to both regional monsoon and global climate changes, with atmospheric CO2, solar insolation, and AMOC playing crucial roles in these responses.
Article
Paleontology
G. R. Shi, Ian Metcalfe, Sangmin Lee, Daoliang Chu, Huiting Wu, Tinglu Yang, Yuri D. Zakharov
Summary: This study describes marine macroinvertebrate fossils from two petroleum exploration cores, identifying two separate assemblages. The age of one assemblage is interpreted as Changhsingian, while the other is considered to be of the earliest Triassic (Griesbachian) age.
Article
Geosciences, Multidisciplinary
Timothy Chapman, Luke A. Milan, Ian Metcalfe, Phil L. Blevin, Jim Crowley
Summary: This study presents a detailed record of a late Permian volcanic event in eastern Australia, which lasted for approximately 4.21 million years and involved the eruption of a significant amount of silicic magma. The researchers also found that the timing of the volcanic activity coincided with a decline in species abundance and the disappearance of Glossopteris forests, suggesting that these global volcanic eruptions triggered the late Permian mass extinction event.
Article
Geochemistry & Geophysics
Bin Wu, Xiaodan Wu, Shuqing Qiao, Xuefa Shi, Limin Hu, Jinming Song, Xuegang Li, Shengfa Liu, Jihua Liu, Yazhi Bai, Jun Zhang, Aimei Zhu, Narumol Kornkanitnan, Somkiat Khokiattiwong
Summary: Anthropogenic Pb emissions from coal-petroleum combustion have greatly affected the concentration and isotopic composition of lead in the global oceans. The Yellow Sea is heavily impacted by coal-petroleum combustion sources, while the Gulf of Thailand is affected by mining activities and coal combustion. The pathways of Pb contamination also differ between the two regions.
Article
Geochemistry & Geophysics
Wenxing Ye, Shengfa Liu, Jingrui Li, Hui Zhang, Peng Cao, Xiaoyan Li, Somkiat Khokiattiwong, Narumol Kornkanitnan, Dejiang Fan, Xuefa Shi
Summary: This study investigates the sedimentary response to climate change in the Bay of Bengal since the Last Glacial Maximum. The findings reveal changes in sediment provenance, with terrigenous material input from the Himalayas and increased contribution from the Indian subcontinent. The study also highlights the impact of the Indian summer monsoon on sediment transport in the Bay of Bengal. Analysis of sensitive grain-size fraction and chemical indicators shows a strong correlation with the variation of the Indian summer monsoon, providing evidence for the evolution history of the monsoon in the Bay of Bengal.
Article
Geosciences, Multidisciplinary
I. Metcalfe
Summary: This article describes the late Kungurian conodonts from the Kanthan Limestone in Perak, Peninsular Malaysia and the Sibumasu Terrane of the Malay Peninsula for the first time. The study provides insights into the biogeography and paleogeographic location of the fauna, and proposes a new scheme for distinguishing species of the hindeodid genera.
GEOLOGICAL MAGAZINE
(2023)
