中国构造-地层大区划分新方案

中国大陆是由泛华夏陆块群、劳亚和冈瓦纳2个大陆边缘、3个大洋(古亚洲洋、特提斯洋和太平洋)洋陆转换逐渐集合长大而成的.在中国大陆增生过程中,经历了多个大洋岩石圈板块构造向大陆岩石圈构造转换、增生、碰撞聚集,形成了以华北、塔里木、扬子为核心的3个陆块(地台)区、8个造山系(阿尔泰-兴蒙、天山-准噶尔-北山、秦-祁-昆、羌塘-三江、冈底斯、喜马拉雅、华夏、台东)镶嵌组成的复式大陆.在造山系中,还包含了大洋消亡、陆陆碰撞形成的6个对接带(额尔齐斯-西拉木伦、南天山、宽坪-佛子岭、班公湖-双湖-怒江-昌宁-孟连、雅鲁藏布、江绍-郴州-钦防).根据中国大陆的上述地史演化特点,提出按陆块区(地台区)、造山带区和对接带区不同的大地构造环境和大地构造演化阶段、造山带区洋-陆转化时间、生物古地理区系、地层类型与地层序列等9条原则进行全国构造-地层大区综合区划新方案.上述3大陆块区、6大对接带和8大造山系构成了中国大陆的17个构造-地层大区. 

New Division of Tectonic-Strata Superregion in China

Asawhole,thecontinentofChinaisgroupedbyPan-Cathaysianblocks,LaurasiaandGondwanacontinentalmarginsand3oceans(Paleo-AsianOcean,TethysOceanandPacificOcean).Indetail,thecontinentofChinaisgrewupby3blocksorplatforms(NorthChina,TarimandYangtze)and8orogenicbelts (Altai-InnerMongolia-Daxinganling,Tianshan-Junggar-Beishan,Qinling-Qilian-Kunlun,Qiangtang-Sanjiang,Gangdisê,Himalaya,Cathaysia,EasternTaiwan)duringtheprocessofdisappearingofoceaniccrustsandthecolliding-growingofcontinentalcrusts.Intheorogenicbelts,6convergentcrustalconsumptionzones(Ertix-XarMoron,SouthTianshan,Kuanping-Foziling,Bangonghu-Shuanghu-Nujiang-Changning-Menglian,Brahmaputra,Jiangshao-Chenzhou-Qinfang)havebeensubdivided.Correspondingly,thestrataofthecontinentofChinaaresubdividedinto17tectonic-stratasuperregionswhichtectonicallybelongto3blocksorplatforms,6convergentcrustalconsumptionzonesand8orogenicseries.Thisdivisionismainlybasedon9keyaspects,includingthedifferenceoftectonicenvironmentandtectonicevolutionamongblocks,convergentcrustalconsumptionzonesandorogenicbelts,thetimingwhentheoceaniccruststransferringintocontinentalcrusts,thefeatureofpaleobiogeographandthetypesofstrata,etc..