Zircon SHRIMP U-Pb dating of granites from the Da Qaidam area in the north margin of Qaidam basin,NW China.;

Both the Da Qaidam eclogite and Xi tieshan eclogite are a part of the north Qaidam basin marginal high-pressure-ultrahigh-pressure metamorphic belt;comparison of the two eclogites,howev er,in-dicates that there are appre ciable differences in their petro graphic features,P-T condi tions and com posi-tional zoning of garnets in the eclog ites.

Characteristics of ductile shear zone in the Dapucahe area, Jilin province;