Generation of high-Mg diorites and associated iron mineralization within an intracontinental setting: Insights from ore-barren and ore-bearing intrusions in the eastern North China Craton

High-Mg andesitic rocks (HMAs) are commonly generated through slab-mantle interactions in arc settings. In this study, however, we report the high-Mg diorites in the Zibo and Laiwu areas of the eastern North China Craton (NCC), which were particularly produced during lithospheric thinning within an intracontinental setting. Some of the rocks generated large-scale Fe skarn deposits (e.g., the Zibo quartz monzonite and the Laiwu Kuangshan...