The tholeiitic series is a sequence of igneous rocks that range from basalt to rhyolite, characterized by low potassium content and a specific pattern of mineral crystallization. This series is significant in petrology for understanding the evolution of basaltic magmas, mid-ocean ridge processes, and the geochemistry of volcanic arcs.
Source Winter, J. D. (2010). “Principles of Igneous and Metamorphic Petrology.” Pearson.