The composite Santana do Ipanema batholith is made up of several Cryogenian-Ediacaran granitic plutons in the Pernambuco-Alagoas (PEAL) Domain of the Borborema province, northeastern Brazil. The individual plutons in this batholith are high-K calc-alkalic to shoshonitic, metaluminous to peraluminous quartz syenites to granites that belong to magnetite-series and magnesian Cordilleran-type granitoids. They carry comagmatic microgranular mafic enclaves with evidence of magma mixing. Their chemical compositions overlap, and they exhibit enrichment in some incompatible and depletion in HFS elements, with variable initial ⁸⁷Sr/⁸⁶Sr ratios that range from 0.70511 to 0.71071. The εNd_(0.6Ga) values cluster into two groups, in which plutons with ages ≥ 625 Ma exhibit slightly negative to slightly positive εNd values (average −1.6), in contrast with the younger plutons that have more negative ones (average −8.7), pointing out that mantle contribution to the source decreased with time, while recycled ancient crust augmented. Geochronological data from the literature indicate that the batholith has been constructed by continuous amalgamations of successive magma pulses via diking for ~30 m.y., with no large crystallization age gap among the plutons. A magma supply rate of 0.003 m³/year is estimated considering this batholith together with two other nearby composite batholiths of similar age in the PEAL Domain, and low volcanic-plutonic ratio. This rather high magmatic addition rate episode has been probably triggered by extensive and repeated basaltic underplating stalled in the lower crust in the magmatic arc formed during the convergence of the São Francisco craton and the Pernambuco-Alagoas block in the course of the western Gondwana amalgamation.

复合 Santana do Ipanema 基岩由巴西东北部 Borborema 省 Pernambuco-Alagoas (PEAL) 域的几个低温纪-埃迪卡拉纪花岗岩岩体组成。该基岩中的单个岩体为高钾钙碱性至钾长石质、金属铝质至过铝质石英正长岩至属于磁铁矿系列和镁质 Cordilleran 型花岗岩的花岗岩。它们携带具有岩浆混合证据的彗形微颗粒基性飞地。它们的化学成分重叠，并且它们在一些不相容的 HFS 元素中表现出富集和消耗，初始⁸⁷ Sr/ ⁸⁶ Sr 比率可变，范围从 0.70511 到 0.71071。εNd _(0.6Ga)值聚集成两组，其中年龄 ≥ 625 Ma 的岩体表现出略负到略正的 εNd 值（平均 -1.6），而年轻的岩体则具有更多的负值（平均 -8.7），指出地幔贡献随着时间的推移，源头减少，而回收的古地壳增加。文献中的地质年代学数据表明，基岩是由连续岩浆脉冲通过围堰连续合并形成约 30 米，岩体之间没有大的结晶年龄差距。岩浆供给率为 0.003 m ³/年是考虑到该基岩以及附近两个 PEAL 域中年龄相近的复合基岩和低火山-深成岩比的估计值。这种相当高的岩浆添加率事件可能是由于在冈瓦纳西部合并过程中圣弗朗西斯科克拉通和伯南布哥-阿拉戈斯地块汇聚期间形成的岩浆弧中的下地壳中停止了广泛和重复的玄武质底床。