在近地表生成,埋葬再结晶和碳酸盐平台多洛米特的结构重印
Gaurav Siddharth Gairola1, Samuel T Thiele2, Pankaj Khanna3,4
1Energy Resources and Petroleum Engineering, Physical Science and Engineering, King Abdullah University of Science and Technology (KAUST), Jeddah, Saudi Arabia. gaurav.gairola@kaust.edu.sa.
Scientific reports
|January 11, 2026
概括
超光谱分析揭示了碳酸盐岩中复杂的多洛米化,受重复的流体流和埋葬事件的影响. 这项研究整合了多个数据集,详细介绍了多洛米特形成和变化的过程和时间.
科学领域:
- 地质化学和石矿学
- 沉积物学和平流图学
- 地质物理学和遥感技术
背景情况:
- 碳酸盐岩石表现出复杂的基因变化,特别是多洛米化,影响水库特性.
- 了解多洛米特的空间分布和纹理异质性对于碳化合物勘探至关重要.
- 数字外模型和高光谱分析提供了先进的工具来描述大规模的地质构造.
研究的目的:
- 将高光谱数据与地化学,断裂和热史相结合,以限制多洛米化过程.
- 在厘米尺度上分析多洛米特的组成和纹理异质性.
- 确定阿拉伯-D成员国dolomitization的时间和控制因素.
主要方法:
- 碳酸盐岩石的高光谱分析和数字浮标建模.
- 地质化学数据的整合,包括稳定同位素 (例如,聚合同位素).
- 断裂分析,构造历史和热历史的重建.
主要成果:
- 多洛米化发生在表面附近 (~30°C) 的回归系统通道中,通过轻微蒸发的海水的反复反流.
- 交替的多洛米特/石层分是与高频循环相关的多个反流事件造成的.
- 用热的深层流体 (~80°C+) 进行埋葬再结晶和重印,通过晚白时期的断裂道,增强了孔隙性和透性.
结论:
- 多罗米化是一个多阶段的过程,而不是单一的事件,涉及早期的反流和后来的埋葬改变.
- 晚白纪的构造事件显著影响了流体通道和多洛米特水库的最终成熟.
- 综合的高光谱和地质数据为了解多洛米特水库异质性提供了前所未有的细节.
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