The Jalal Abad magmatic rocks are located at the southeastern edge of the Kashmar-Kerman tectonic zone, which includes Cadomian magmatic rocks and sedimentary strata intruded by several Silurian alkaline plutons and associated dikes. They have typical alkaline kaersutite and alkaline to per-alkaline pyroxene and are characterized geochemically by enrichment in LREE, Nb and Ta, and high concentrations of incompatible trace elements, demonstrating alkaline features with typical ocean island basalt signatures. Chondrite-normalized REE and multi-element spider diagrams along with High ²⁰⁶Pb/²⁰⁴Pb ratios (18.46–19.83) for the Jalal Abad gabbro, diorite, and dibasic dikes indicate involvement of an OIB-like source during the formation of these rocks. Modeling of bulk–rock trace elements and Sr–Nd isotopes suggest that magmas were generated by a pair of HIMU-EM1- like mantle source, consistent with a plume mantle origin in a within-plate rift zone. The melting took place in garnet stability field and the fractional crystallization played a major role in magmatic evolution of the mantle-derived parental magma. The Jalal Abad mafic rocks have U–Pb zircon ages of 425.5 ± 8.6 Ma and along with other Ordovician to Silurian rocks in different parts of the Iranian plate are related to the extensional tectonic regime responsible for the rifting of Cadomian fragments from northern Gondwana and the opening of Paleo-Tethys. Our findings indicate that the rifting and seafloor spreading of Paleo-Tethys and the formation of its oceanic crust were intensely influenced by a mantle plume activity in the early Paleozoic.

Jalal Abad岩浆岩位于Kashmar-Kerman构造带的东南边缘，包括Cadomian岩浆岩和由几个志留纪碱性岩体和相关堤防侵入的沉积地层。它们具有典型的碱性玄武岩和碱性至过碱性的辉石，其地球化学特征是富含LREE，Nb和Ta，以及高浓度的不相容微量元素，具有典型的海洋岛玄武岩特征，表现出碱性特征。球粒石归一化REE和多元素蜘蛛图以及高²⁰⁶ Pb / ²⁰⁴贾拉勒·阿巴德辉长岩，闪长岩和二元堤坝的铅比（18.46–19.83）表明，在这些岩石的形成过程中涉及到了OIB类源。块状岩石痕量元素和Sr-Nd同位素的模型表明，岩浆是由一对HIMU-EM1类地幔源产生的，与板内裂谷带中的羽状地幔起源一致。熔化发生在石榴石稳定场中，分步结晶在地幔衍生的母岩浆的岩浆演化中起主要作用。贾拉勒阿巴德铁镁质岩的U–Pb锆石年龄为425.5±8.6 Ma，并且与伊朗板块其他地区的其他奥陶纪至志留纪岩体有关，该构造构造机制负责从冈瓦纳北部和北部的卡多米亚断层裂谷。特提斯古城开幕。