中国东部大同、山东、安峰山-平名山、房山、牛头山、崇仁地区玄武岩三价铁/全铁（Fe3+/∑Fe值）及氧同位素数据（2024）

（1）数据内容：Fe³⁺/∑Fe比值作为反映地幔氧化程度的关键指标，在中国东部新生代板内玄武岩中检测到显著高值；
（2）数据来源及加工方法：基于中国东部新生代板内玄武岩的实地采样与分析，整合了岩石地球化学（包括Fe³⁺/∑Fe比值）和氧同位素数据；
（3）数据质量：包含原始Fe³⁺/∑Fe值及其校正值（corrected Fo₉₀）；
（4）应用成果：
① 提出地幔过渡带碳酸盐熔体氧化机制，成功解释高氧化玄武岩的成因；
② 量化了深部碳储存对全球碳循环的贡献，建立了俯冲板块停滞与长期气候调节的关联；
研究前景：
① 指导全球深部碳循环模型的构建，完善对地质历史中气候事件的解释；
② 为碳中和研究提供地质学依据，揭示地球深部碳封存的自然过程；
③ 需进一步开展全球其他地区玄武岩及俯冲带研究，验证该机制的普适性。

(1) Data Content: The Fe³⁺/∑Fe ratio, a key indicator reflecting the oxidation degree of the Earth's mantle, was detected with significantly high values in Cenozoic intraplate basalts from eastern China.
(2) Data Source and Processing Method: Based on field sampling and analysis of Cenozoic intraplate basalts from eastern China, this dataset integrates petrogeochemical data (including Fe³⁺/∑Fe ratio) and oxygen isotope data.
(3) Data Quality: The dataset contains both original Fe³⁺/∑Fe values and their corrected values (corrected Fo₉₀).
(4) Applied Achievements:
① An oxidation mechanism of carbonate melts in the mantle transition zone was proposed, which successfully explained the genesis of highly oxidized basalts;
② The contribution of deep carbon reservoirs to the global carbon cycle was quantified, and the link between stagnant subducting slabs and long-term climate regulation was established.
Research Prospects:
① Guide the construction of global deep carbon cycle models and improve the interpretation of climate events in geological history;
② Provide geological evidence for carbon neutrality research and reveal the natural processes of deep carbon sequestration in the Earth;
③ Further studies on basalts and subduction zones in other global regions are required to verify the universality of this mechanism.

搜集汇总

背景与挑战

背景概述

该数据集包含中国东部大同、山东等多个地区新生代板内玄武岩的三价铁/全铁比值（Fe³⁺/∑Fe）及氧同位素数据，时间范围覆盖71.9百万年。数据揭示了高Fe³⁺/∑Fe比值，支持地幔过渡带碳酸盐熔体氧化机制的提出，用于解释高氧化玄武岩成因并量化深部碳储存对全球碳循环的贡献。