岩石和矿化液体的异步转移在一个浮动 - 亚火山 - 火山管道系统中
Gabriele Paoli1,2, Andrea Dini3, Simone Vezzoni4
1Dipartimento di Scienze Della Terra, Università di Pisa, Pisa, Italy. gabriele.paoli@unipi.it.
Scientific reports
|December 5, 2025
概括
坎皮利亚火山复合体显示了一个双循环的岩系统 (5.4-4.4亿年),与斯卡恩沉积物形成有关. 岩转移和矿化液体异步运行,影响了矿石的起源.
科学领域:
- 地质化学 地质化学
- 伊格尼岩石学 伊格尼岩石学
- 经济地质学 地质学
背景情况:
- 在托斯卡纳的Campiglia火山复合体中,存在Cu-Pb-Zn(-Ag) 斯卡尔纳矿床.
- 岩活动发生在540万年至440万年前,涉及地和地幔衍生的岩.
研究的目的:
- 为了研究岩转移和矿化液体之间的地球时代-地球化学相互作用.
- 重建岩管道系统及其在斯卡恩沉积物起源中的作用.
主要方法:
- U-Pb CA-ID-TIMS 石测年法,以确定精确的时间表.
- 对岩石和矿化液体进行地质化学分析.
主要成果:
- 重建了一个两周期的岩场景,每个周期持续约50万年.
- 第一个循环涉及双模性岩储,导致Zn-Pb(-Ag) 和Fe-Cu矿石的形成.
- 第二个周期的特点是一个独立的水库与相互作用的地和地幔融化,以石喷发的高潮.
结论:
- 在岩系统养和矿化液体活动之间存在显著的异步.
- 早期结晶的石的回收发生在顺序提取的融体内.
- 在地和地幔衍生的火性单位之间观察到有限的相互作用.
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