Abstarct: In this study, basaltic magmatism of the Padeha and Khoshyeilagh Formations (belongs to Devonian) in north of Shahrood (Nekarman and Meyqan) have been studied for the first time. The main lithology of the Padeha Formation consists of white quartz arenaite sandstone, red shale and siliceous clastic rocks with interbeded carbonates. For this, Padeha Formation has been deposited in a continental environment includes alluvial fan, the areas away from alluvial fan and in the lake and its margin. However, the main lithology of Khoshyeilagh Formation is carbonates (marine). baxsed on the lithology, sedimentary structures, microscopic features, textural characteristics and fossil contents in the studied sections, five sequences of facies in this Formation have been identified. These sequences of facies have been deposited in dry (river) to marine (carbonate platform ramps) environments. Unlike previous reports, it is believed that Devonian magmatism was widespread in these formations, so that the magmatic rocks with basaltic composition as basaltic lavas, microgabroic dikes and sills have been outcroped in the Padeha and Khoshyeilagh formations. Studied igneous rocks are basalt, olivine basalt and microgabbro. Plagioclase and clinopyroxene (augite type) are the main minerals of the basaltic samples. The most important accessory minerals of these rocks which can be noted include olivine and opaque minerals (magnetite and pyrite). Extent of olivine alteration is too high that the primary mineral has lost their mineralogical features and is replaced completely by calcite and iron oxide. Due to saussuritization plagioclases have been converted to epidote, calcite and chlorite minerals. The most important textures of basaltic and olivine basaltic rocks include microlitic, microliticporphyry, glomero-porphyritic, intersertal, ophitic, subophitic, intergeranular and amigdaloidal textures. In the microgabroic rocks, the main minerals include plagioclase and clinopyroxene (augite). The most important accessory minerals in these rocks are apatite, sphene and opaque minerals (magnetite and pyrite). In these rocks, secondary minerals such as chlorite, calcite and epidote have been formed by alteration of plagioclase and clinopyroxene. The dominant textures of these rocks are intergranular and ophitic textures. baxsed on the geochemical studies, these igneous rocks are alkaline in nature. baxsed on the tectonic discrimination diagrams, these rocks are situated in the field of the alkali basalts of the intracontinental rift. This pattern is compatible with alkaline nature of the magma and alkaline intercontinental rifting nature of Soltanmeydan basaltic complex in this region. Primitive mantle and chondrite normalized diagrams show enrichments in LREE, and no depletions in HFSE. Parallel trends in spider diagrams, represents a common parental magma for the studied rocks and the role of fractional crystallization as the main process in the evolution of magma. High amounts of P and Ti represent that magam forming of these rocks originated from partial melting of a deep mantle plume or from an enriched asthenospheric mantle (like source of OIB). This magma has been resulted by 5 to 11:partial melting of a garnet peridotite mantle at depths of 111 to 111 km, and during its ascent through continental crust it has not been contaminated.