试评A－俯冲带术语在中国大地构造学中应用

A REVIEW ON THE TERMINOLOGY OF A-SUBDUCTION IN THE GEOTECTONICS OF CHINA

Ａ－俯冲带术语，在中国大地构造学中广为应用，若考虑其沿革、应用状况较为岐乱。作者从各家厘定Ａ－俯冲带涵意进行评述，并提出Ｃ－俯冲（中国型俯冲）的８点特征与Ａ－俯冲对比和区别。本文最后建议Ｂ、Ａ、Ｃ俯冲用在造山带形成的不同阶段来解决这一矛盾。

The terminology of A-subduction is rather confusion in the geotectonics of Chinathough it is popularly used by Chinese geologists for a long period.After making reviewson the various definitions and expressions of this teetonic term,the author of this paperput forward the conception of C-subduction(Chinese-type subduction)with eight geologi-cal characters which have been compared with those of A-subduction. Consequently,it issuggested that three B,A,and C subductions should be expressed different orogenic stagesof plate subduction, continental collision and intracontinental sequence, respectively.