Microearthquake reveals the lithospheric structure at mid-ocean ridges and oceanic transform faults

Zhiteng YU; Jiabiao LI; Weiwei DING

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Microearthquake reveals the lithospheric structure at mid-ocean ridges and oceanic transform faults

Deep Sea | Updated：2024-10-14

- Microearthquake reveals the lithospheric structure at mid-ocean ridges and oceanic transform faults
- Microearthquake reveals the lithospheric structure at mid-ocean ridges and oceanic transform faults
- 海洋湖沼学报(英文) 2024年42卷第3期页码：697-700
- Affiliations：
  
  Key Laboratory of Submarine Geosciences & Second Institute of Oceanography, Ministry of Natural Resources, Hangzhou 310012, China
- Author bio：
  
  jbli@sio.org.cn
- Funds：
  
  the State Key Program of National Natural Science of China(42330308);the Project of Donghai Laboratory(DH-2022ZY0005);the Scientific Research Fund of the Second Institute of Oceanography, Ministry of Natural Resources(QHXZ2301);the National Science Foundation for Distinguished Young Scholars of China(42025601);for Young Scientists of China(41906064);the Zhejiang Provincial Natural Science Foundation of China(LDQ24D060001)
- DOI：
  中图分类号：
- 收稿：2023-11-20，
  
  纸质出版：2024-05-01
- Accepted：
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Microearthquake reveals the lithospheric structure at mid-ocean ridges and oceanic transform faults[J]. 海洋湖沼学报(英文), 2024,42(3):697-700.

YU Zhiteng,LI Jiabiao,DING Weiwei.Perspective Microearthquake reveals the lithospheric structure at mid-ocean ridges and oceanic transform faults[J].Journal of Oceanology and Limnology,2024,42(03):697-700.
Microearthquake reveals the lithospheric structure at mid-ocean ridges and oceanic transform faults[J]. 海洋湖沼学报(英文), 2024,42(3):697-700. DOI：

YU Zhiteng,LI Jiabiao,DING Weiwei.Perspective Microearthquake reveals the lithospheric structure at mid-ocean ridges and oceanic transform faults[J].Journal of Oceanology and Limnology,2024,42(03):697-700. DOI：

摘要

Abstract

Mid-ocean ridge and oceanic transforms are among the most prominent features on the seafloor surface and are crucial for understanding seafloor spreading and plate tectonic dynamics

but the deep structure of the oceanic lithosphere remains poorly understood. The large number of microearthquakes occurring along ridges and transforms provide valuable information for gaining an in-depth view of the underlying detailed seismic structures

contributing to understanding geodynamic processes within the oceanic lithosphere. Previous studies have indicated that the maximum depth of microseismicity is controlled by the 600-℃ isotherm. However

this perspective is being challenged due to increasing observations of deep earthquakes that far exceed this suggested isotherm along mid-ocean ridges and oceanic transform faults. Several mechanisms have been proposed to explain these deep events

and we suggest that local geodynamic processes (e.g.

magma supply

mylonite shear zone

long-lived faults

hydrothermal vents

etc.) likely play a more important role than previously thought.

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references

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