岩圆顶和在挪威边缘启动海洋过程
1Department of Geosciences, Norwegian University of Science and Technology (NTNU), Trondheim, Norway. gwenn.peron-pinvidic@ntnu.no.
Scientific reports
|October 8, 2025
概括
威尔逊周期描述了大陆的分裂,但其早期阶段尚不清楚. 新的地震数据揭示了中挪威边缘的岩结构,为裂向漂流过渡提供了洞察力.
科学领域:
- 地质地质地质地质地质地
- 构造学 构造学 构造学 构造学
- 地质物理学 地质物理学
背景情况:
- 威尔逊周期解释了大陆的组装和解体,但大陆裂变的精确机制和海洋扩散的开始仍然不太清楚.
- 观察海洋积聚的初始阶段和确定海洋扩散脊开始的确切几何标记是具有挑战性的.
研究的目的:
- 为了研究在大陆裂变结束时受到不良约束的石质层解体过程.
- 识别和描述与从大陆裂变到海洋扩散的过渡相关的新型地质几何.
主要方法:
- 对高分辨率,深度透的地震反射数据集的分析.
- 详细地图和解释地震特征在中挪威裂痕边缘的外部领域.
主要成果:
- 识别了一系列系统的岩相关特征.
- 描述特定的几何形状,包括潜在的岩圆顶,辐射断层和堤系统,侵入物和岩流.
结论:
- 观察到的与岩相关的几何结构为石质层解体过程提供了新的见解.
- 这些发现有助于更好地了解从大陆裂变 (裂变) 到海底扩散 (漂移) 的过渡.
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