| | Journal (article/letter/editorial) | 315-333, 1983 Petrogenesisof the Concord gabbusyenite complex, North Carolina BnnsnRA A. Orsr,Nr. Hanny Y...Massachusetts 02139 Abstract The Concord intrusive complex, Cabamrs County, North Carolina, consists of a large gabbro...envelopedby a horseshoe-shapedsyenite ring dike. The complex is clearly delineated from surrounding rocks by...isotopic compositionsof gabbro and syenite in this complex overlap, suggesting the two rock types may be related...quartz, Fe-Ti oxides, pyrite, apatite, zircon and monazite. Mafic mineral compositions in gabbro and syenite |
|