The Magmatic Plumbing Beneath the Wudalianchi Volcanic Region, Northeast China, is recharged by Magma Reservoirs under Keluo Volcano as discovered by Full-Waveform Ambient Noise Tomography
A collaborative study undertaken by researchers from the ITU, Liaoning Technical University of China, China National Disaster Institute, Chinese Academy of Sciences, and Tohoku University of Japan has unveiled hitherto unobserved and significant details concerning the magma reservoir configuration beneath the potassium-rich Wudalianchi volcanic region. Utilising advanced technology; a high-resolution three-dimensional shear wave velocity model of the upper crust and mantle was obtained, providing a more comprehensive view of the region than the conventional low-resolution crustal tomography model. This study utilised advanced three-component broadband earthquake stations installed in the region to collect new data, enabling the identification of significant anomalies beneath the Nuominhe and Keluo volcanoes. These anomalies are believed to be the result of magma ascent paths connecting fluid reservoirs in the Earth's crust and other sources in the mantle. Furthermore, the magmatic migration pathway that carries potassium-rich melts in the middle and lower crustal levels has also been revealed.
Prof. Dr. Tuncay Taymaz has stated that the findings revealed that the Wudalianchi volcano was re-fed by deeper and larger magma reservoirs under the Keluo volcano. The faculty member further emphasized that the data obtained from this research in China can contribute to a better understanding of the volcanoes located in the Eastern Anatolia Region and around Lake Van in our country, which are likely to become active, and to reduce the disaster damages they may cause.
Title: The Magmatic Plumbing Beneath the Wudalianchi Volcanic Region, Northeast China, is recharged by Magma Reservoirs under Keluo Volcano as discovered by Full-Waveform Ambient Noise Tomography
Authors: Yazarlar: Ziqiang Lü, Jianshe Lei, Dapeng Zhao, Yi-Gang Xu, Lijun Liu, Changqing Sun, Yinshuang Ai, Tuncay Taymaz
Article Info: Nature Communications earth & environment | Vol. 5, Manuscript No. 575(2024), https://doi.org/10.1038/s43247-024-01748-2
Summary— The intraplate magmatic systems of the Wudalianchi potassic volcanic region in northeast China have historically exhibited eruption activity, and there is evidence that they retain the potential for future eruptions. However, the characteristics of this complex volcanic region remain debated and poorly understood due to the relatively low resolution of existing crustal tomography. Here we present a high-resolution shear-wave velocity model of the crust and uppermost mantle obtained by applying full-waveform ambient noise tomography to data recorded at 106 recently deployed broadband seismic stations. Our results reveal two vertical low-velocity anomalies discovered beneath the Nuominhe and Keluo volcanoes, which appear to be magma ascending pathways connecting a mantle source and crustal reservoirs. A horizontally interconnected low-velocity zone in the middle-lower crust indicates a magmatic migration pathway transporting potassium-rich melts directly among the potassic volcanic units. In addition, the Wudalianchi volcano is likely recharged by deeper and larger crustal magma reservoirs under the Keluo volcano. The unique geometries of the magmatic plumbing systems provide valuable seismic evidence for the volcanic eruption dynamics and potential volcanic hazards.
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Figure. Tectonic setting of northeast China and the distribution of seismic stations (Lü et al., 2024).
Figure. A schematic diagram of trans-crustal magmatic systems beneath the potassic intraplate volcanoes in northeast China (Lü et al., 2024).
Figure. A photo frame taken when Prof. Dr. Tuncay Taymaz was explaining his latest work. (source: https://haberler.itu.edu.tr/haberdetay/2024/10/25/ogretim-uyemizden-cin-deki-karmasik-yanardag-sistemine-isik-tutan-arastirma)