The Paleozoic magmatism of the Tighza Mining District (Central Morocco Massif) is of the polyphaser, emplaced during the Upper Carboniferous to the Middle Permian. It is expressed by granitic intrusions and their swarm dikes extending over several kilometers in length. The petro-structural and geochemical studies applied to this magmatic complex, has revealed the presence of several events: (i) A hypo-volcanic complex, formed from dikes, intermediate to felsic composition of microdiorite, microgranodiorite, microgranites, and rhyolites, composed of biotite, plagioclase, quartz, and K-feldspar. Apatite, zircon, and iron oxides form accessory minerals. The whole is affected by a strong hydrothermal alteration, particularly chlorite-micaceous, with parallel development of oxides and carbonates, generated by the (ii) emplaced of granitic intrusions. These, circumscribed and independent intrusions, outcropping following meridian alignment within a contact metamorphic aureole, generated by a buried granite, revealed by gravimetry. (iii) The porphyritic microtonalites with biotite, quartz, orthoclase, and plagioclase (An_30-55), presented by occurrences of veins oriented in two conjugated directions NW-SE and NE-SW, intersect the granite and are relatively little altered. (iv)The microleucogranite lenses finish the magmatic activity of the region, emplaced in the sinistral shear zone, porphyritic microgranular to rhyolitic texture, with quartz, plagioclase (An_<15) and primary muscovite, showing plastic deformation structures, intersected and offset by secondary quartz and muscovite veinlets. The chemical analyses in major elements and traces of the different petrographic groups of Tighza, make it possible to specify the aluminous character of this magmatism (A/CNK>1 and A/NK>1) with strong crustal participation. The hypo-volcanic complex with granitic stocks describes a calc-alkaline signature, which tends towards a win aluminum-potassic tendency which is well emphasized by microleucogranites. The focus of this magmatism in a deep crustal rupture that is activated at the end of the Variscan compression explains the syn- to post-collisional character of this magmatism as reproduced in the geotectonic diagrams.

Tighza矿区（摩洛哥中部地块）古生代岩浆作用为多相岩浆作用，侵位于上石炭统至中二叠世。它表现为花岗岩侵入体及其延伸数公里长的群堤。应用于该岩浆复合体的岩石结构和地球化学研究揭示了几个事件的存在：(i) 由岩脉形成的次火山复合体，由微闪长岩、微花岗闪长岩、微花岗岩和流纹岩组成的中间至长英质成分，由黑云母、斜长石、石英和钾长石。磷灰石、锆石和氧化铁形成副矿物。整体受到强烈的热液蚀变的影响，特别是绿泥石云母，伴随着氧化物和碳酸盐的平行发展，由 (ii) 花岗岩侵入产生。这些外接和独立的侵入体，在接触变质光环内的子午线排列后露头，由埋藏的花岗岩产生，通过重力测量揭示。(iii) 含黑云母、石英、正长石和斜长石的斑状微斜长岩（An_30-55），由在 NW-SE 和 NE-SW 两个共轭方向上定向的脉的出现呈现，与花岗岩相交并且变化相对较小。(iv)微淡色花岗岩透镜体完成了该地区的岩浆活动，位于左旋剪切带，斑状细粒至流纹质结构，含石英、斜长石(An < ₁₅) 和原生白云母，显示出塑性变形结构，与次生石英和白云母细脉相交和抵消。对 Tighza 不同岩相群的主要元素和痕量的化学分析，可以明确地壳参与强烈的岩浆作用（A/CNK>1 和 A/NK>1）的铝质特征。具有花岗岩储量的次火山复合体描述了一种钙碱性特征，它倾向于铝钾趋势，微淡花岗岩很好地强调了这一点。这种岩浆作用集中在深部地壳破裂中，在 Variscan 压缩结束时被激活，解释了这种岩浆作用的同步到后碰撞特征，如大地构造图中再现的那样。