Independent Magma System Underneath Micro Non-Transform Discontinuity: Geochemical Evidence of Magma from Daxi Area, Carlsberg Ridge

Hang Hu; Xiqiu Han; Yejian Wang; Zhongyan Qiu; Tong Zong; Jiqiang Liu; Honglin Li; Xing Yu

doi:10.1007/s12583-024-0043-y

Volume 37 Issue 5

Oct 2026

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Journal of Earth Science > 2026 > 37(5): 2069-2081.

Hang Hu, Xiqiu Han, Yejian Wang, Zhongyan Qiu, Tong Zong, Jiqiang Liu, Honglin Li, Xing Yu. Independent Magma System Underneath Micro Non-Transform Discontinuity: Geochemical Evidence of Magma from Daxi Area, Carlsberg Ridge. Journal of Earth Science, 2026, 37(5): 2069-2081. doi: 10.1007/s12583-024-0043-y

Citation:

Hang Hu, Xiqiu Han, Yejian Wang, Zhongyan Qiu, Tong Zong, Jiqiang Liu, Honglin Li, Xing Yu. Independent Magma System Underneath Micro Non-Transform Discontinuity: Geochemical Evidence of Magma from Daxi Area, Carlsberg Ridge. Journal of Earth Science, 2026, 37(5): 2069-2081. doi: 10.1007/s12583-024-0043-y

Citation:

Hang Hu, Xiqiu Han, Yejian Wang, Zhongyan Qiu, Tong Zong, Jiqiang Liu, Honglin Li, Xing Yu. Independent Magma System Underneath Micro Non-Transform Discontinuity: Geochemical Evidence of Magma from Daxi Area, Carlsberg Ridge. Journal of Earth Science, 2026, 37(5): 2069-2081. doi: 10.1007/s12583-024-0043-y

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Independent Magma System Underneath Micro Non-Transform Discontinuity: Geochemical Evidence of Magma from Daxi Area, Carlsberg Ridge

doi: 10.1007/s12583-024-0043-y

Hang Hu^{1, 2
,},
Xiqiu Han^{1, 2
,
,
,},
Yejian Wang^{1, 2
,},
Zhongyan Qiu^1
,,
Tong Zong^3
,,
Jiqiang Liu^1
,,
Honglin Li^1
,,
Xing Yu^{1, 2
,
,
,}

1.
State Key Laboratory of Submarine Geoscience, and Second Institute of Oceanography, Ministry of Natural Resources, Hangzhou 310012, China
2.
Ocean College, Zhejiang University, Zhoushan 316021, China
3.
College of Architectural Engineering, Weifang University, Weifang 261061, China

More Information

Corresponding author: Xiqiu Han, xqhan@sio.org.cn; Xing Yu, yuxing@sio.org.cn
Received Date: 27 Dec 2023
Accepted Date: 30 Jul 2024

Available Online: 19 Oct 2026

Issue Publish Date: 30 Oct 2026

Abstract

Abstract

The discontinuities of a ridge, defined by the geophysical properties, often coincide with geochemical variations in lava, highlighting the relationship between ridge discontinuity and the underlying magmatic system. This study presents bathymetric, geophysical, and basaltic geochemical data from the Daxi-non transform discontinuity (NTD) and adjacent segments. The Daxi-NTD is a typical micro-NTD, with an offset less than 15 km. Within the NTD, a neo-volcanic ridge has emerged, with an active hydrothermal system suggesting an underlying magmatic system. The study examines mantle composition, melting degree, crystallization pressure, and melt extraction processes beneath Daxi-NTD. Comparative analysis reveals that basalts in the Daxi area undergo extensive differentiation, characterized by higher crystallization pressure and lower melting degree compared to the adjacent segments. We propose that Daxi-NTD hosts an independent magmatic system, where melt migrates vertically through the magmatic system rather than laterally from the adjacent segment center. This approach aids in understanding the magmatism along slow-spreading ridges and provides insights into the geodynamics and tectonic evolution of younger ridge systems.
- geochemical characteristics,
- non-transform discontinuity,
- magmatic process,
- independent magma system,
- Carlsberg Ridge,
- geochemistry

Electronic Supplementary Materials: Supplementary materials (crystallization pressure calculation method;method for correcting major elements; modeling of the partial melting for lithological heterogeneous mantle; Figures S1 to S4; Tables S1–S2) are available in the online version of this article at https://doi.org/10.1007/s12583-024-0043-y.
Conflict of Interest
The authors declare that they have no conflict of interest.

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References(52)

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Independent Magma System Underneath Micro Non-Transform Discontinuity: Geochemical Evidence of Magma from Daxi Area, Carlsberg Ridge

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Independent Magma System Underneath Micro Non-Transform Discontinuity: Geochemical Evidence of Magma from Daxi Area, Carlsberg Ridge

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