Copper, Uranium and REE Mineralisation in an Exhumed Oil Reservoir, Southwest Orkney, Scotland
Copper, Uranium and REE Mineralisation in an Exhumed Oil Reservoir, Southwest Orkney, Scotland
复制标题
DOI：
10.3390/geosciences13050151
复制
发表时间：
2023-05
期刊：
影响因子：
2.7
通讯作者：
E. Heptinstall;J. Parnell;J. Armstrong;A. Schito;T. O. Akinsanpe
中科院分区：
文献类型：
--
作者：
E. Heptinstall;J. Parnell;J. Armstrong;A. Schito;T. O. Akinsanpe
铜、铀和稀土元素(REE)矿化产于苏格兰奥克尼西南部含油气的泥盆纪陆相砂岩中。风成Yesnaby砂岩组和河流相Harra Ebb砂岩组是石油侵位后的矿化产物。富含稀土的APS矿物闪长岩尤其与沥青结核共生，其中许多结核含有褐铜矿。随后，热液铜和其他硫化物以及重晶石在~190°C的温度下进一步矿化了油藏。随着石炭-二叠纪的隆升，石油的生物降解发生在晚些时候。该产出证实了沉积盆地中温度相对较低的铜-APS成矿作用是可能的。
Copper, uranium, and rare earth element (REE) mineralisation occurs in hydrocarbon-bearing Devonian continental sandstones in southwest Orkney, Scotland. The aeolian Yesnaby Sandstone Formation and fluvial Harra Ebb Sandstone Formation were mineralised following oil emplacement. The REE-bearing APS mineral florencite is particularly associated with bituminous nodules, many of which contain brannerite. Subsequently hydrothermal copper and other sulphides, and barite, further mineralised the oil reservoir at a temperature of ~190 °C. Oil was mobilised through mineralised fractures at this stage. Biodegradation of the oil occurred later, following the Carboniferous-Permian uplift. The occurrence confirms that Cu-APS mineralisation is possible in relatively low-temperature regimes in sedimentary basins.