isotope age造句怎么写

Study on geochemical composition and isotope ages of the Malasongduo porphyry associated with Cu-Mo mineralization.

The research on geochemical characteristics and isotope age suggests that the deposit belongs to a magma-metasomatic pegmatite type deposit related to Fufang and Huitong granitic mass in genesis.

The four zirconic U-Pb isotope ages have been determined for quartz monzonitic granite, biotite monzonitic granite, syenogranite and alkaline granite, which belong to four units from the Laoshan granitoids.