Frontiers in Earth Science ( IF 2.0 ) Pub Date : 2020-08-04 , DOI: 10.3389/feart.2020.00363 Maurice Kwékam , Victor Talla , Eric Martial Fozing , Jules Tcheumenak Kouémo , István Dunkl , Eammanuel Njonfang
The Batié granitic massif in western Cameroon is NE–SW elongated, follows the regional foliation, and is parallel to the Kekem–Fotouni shear zone, which is the southwestern extension of the Tcholliré–Banyo Fault (TBF). This massif comprises two petrographic units: biotite granite and amphibole granite. Major, trace, REE, Sr–Nd isotopic, and new U–Pb data are used to constrain their nature and origin. The results indicate that they are high-K alkali-calcic with shoshonite affinity. The amphibole granite is metaluminous, whereas biotite granite is weakly peraluminous. Both granites are high-temperature I-type granites and crystallized under oxidizing conditions. Initial (87Sr/86Sr)620
中文翻译:
喀麦隆西部巴蒂地区的泛非高K型I型花岗岩:年龄,成因和构造意义
喀麦隆西部的Batié花岗岩地块是NE–SW延长的,遵循区域性叶状,并与Kekem–Fotouni剪切带平行,后者是Tcholliré–Banyo断层(TBF)的西南延伸。该地块包括两个岩石学单元:黑云母花岗岩和角闪石花岗岩。主要的,痕量的,REE,Sr-Nd同位素和新的U-Pb数据用于约束其性质和起源。结果表明,它们是具有高钾钠石亲和力的高钾碱钙。闪石花岗岩为金属质,而黑云母花岗岩为弱铝质。两种花岗岩均为高温I型花岗岩,并在氧化条件下结晶。初始(87 Sr / 86 Sr)620