Details

Autor(en) / Beteiligte

• Chen, Daogong
• Wang, Xiang
• Deloule, E.
• Li, Binxian
• Xia, Qunke
• Cheng, Hao
• Wu, Yuanbao

Titel

Zircon SIMS ages and chemical compositions from Northern Dabie Terrain: Its implication for pyroxenite genesis

Ist Teil von

• Chinese science bulletin, 2001-06, Vol.46 (12), p.1047-1050

Ort / Verlag

Department of Earth and Space Sciences, University of Science and Technology of China,%Department of Earth Sciences, Nanjing University,%CRPG-CNRS, Nancy 54501, France

Erscheinungsjahr

2001

Beschreibungen/Notizen

• P3; We present the results of a detailed micro-scale investigation of zircons from pyroxenites, Daoshicong Northern Dabie using a combination of SIMS and ICPMS. The SIMS measurements gave ages of 134-159 Ma. Its average of (144.5±6.2) Ma is interpreted as the best estimate of the pyroxenite intrusion. The crystallization of zircons continued for quite a long time and underwent slow cooling. The py-roxenites are products of post-collision magmatism. The REE pattern is HREE-enriched, and its HREE concentra-tions fall between the magmatic and metamorphic range of gneissic zircons from the Dabie area, which indicate the involvement of crust material in its mantle source.