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[½»Á÷] ¡¾Ô­´´¡¿how many ranges subduction in Eastern China since Permian?

̫ƽÑó°å¿é(¿ÉÄܽдíÁË)ÔÚµØÇòÑÝ»¯Ê·ÉÏËÆºõ°çÑÝןÜÖØÒªµÄ½ÇÉ«,È绷̫ƽÑóµÄÔìɽ´øÓëÆä×ÅÓÐǧϸÍòÂÆµÄ¹ØÏµ.¶ø¹ÅÑÇÖÞÑóÔÚµØÊ·ÉÏÊǷֳɼ¸¿éµÄÄØ?¿´ÎÄÏ×ʱ·¢ÏÖ̫ƽÑóÔÚÕû¸ö̫ƽÑóÇøÓòÉÏ´æÔÚÐí¶àСµÄ´óÑó°å¿é,ÈçFalalon°å¿é, Izanagi°å¿é,̫ƽÑó°å¿é,Kula°å¿éµÈ.¶øÇÒÕâ¸ö°å¿éÖ®¼ä´æÔÚ×ÅÑóÖм¹.ËùÒÔËæ×ÅÕâЩ´óÑó°å¿éÓë´ó½·¢Éú¸©³åʱ,°éËæ×ÅÑ󼹵ĸ©³å,¾Í²úÉúÁËÐí¶àµÄÇé¿ö.
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ºÙºÙ.ÎÒÀϰå×î½üÔÚ¸úÎÒÃÇÁÄÌìµÄʱºò,Ò²Ìá³ö˵,Èý½­³É¿ó´øÓ¦¸ÃÉϸúÑ󼹸©³åÓйØÏµµÄ. ÎÒÄÇÌì¿´ÁËÒ»ÏÂÈ«¹úµØÐÍͼ,¸Ð¾õÑ󼹵ķ½ÏòÊDZ±¶«¶«ÏòµÄ.¶øÄÇÌõ³É¿ó´øÊÇÄϱ±ÏòµÄŶ.Ææ¹Ö. ÄѵÀ¸©³åÏÂÈ¥µÄÄDz¿·ÖÑó¼¹ÊÇÄϱ±ÏòµÄ?
8Â¥2009-09-02 14:44:42
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¿´¿´Î÷̫ƽÑóÄDZßÊÇÈçºÎÒ»ÖÖÇé¿öÄØ? ÓÐEndnote×·Ë÷ÎÄÏ×ʱ,·¢ÏÖÓÐÁ½¸öµØ·½¾ÓȻͬʱ³öÀ´ÁËRange subduction. one is in AlasKa in 50-52Ma(Cole, 2006, GSA), ²»¹ýÑóÖм¹ÊÇÏò¶«ÄÏ·½ÏòÒÆ¶¯. left of the range is Kula plate. ÓұߵÄδ±êʶ³öÀ´.
another one is in Western North America(Breistsprecher, 2003, Geology). ×÷ÕßÔò»­³öÁËrange subduntion still in ca. 50Ma. so question came out. which one is right?
2Â¥2009-08-31 11:32:17
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Maruyama(1997)ÔÚËûµÄÎÄÕÂÃèÊöÁËÈÕ±¾µºµÄÑÝ»¯ÀúÊ·,µ±È»ÊÇ´ÓÕû¸öµÄµØ¿ÇÔ˶¯ÑÝ»¯Ê·¿ªÊ¼µÄ.µ±È»,Ò²ÈøøÎÒÃÇÌṩÐí¶àÆäËüµÄÐÅÏ¢.¶øÎÒÃÇËù¹Ø×¢µÄÊÇËû´ÓÓ¡Ö§ÆÚ¿ªÊ¼µ½ÏÖÔڵĻ,¸ü¿´ÖеÄÊÇÆäÑóÖм¹µÄλÖÃ(ÒòΪǰ¶Îʱ¼äÒ»Ö±±»ÀϰåÌáµ½µÄrange subductionËùÎüÒý). ºÜÆæ¹Ö,Ò²Ðíµ±Ê±µÄ¹ÅÑÇÖÞÑó±»¼¸¸öÑóÖм¹Ëù·Ö¿ª,´ÓÀ´Óз¨À­Â¢°å¿é,ÓÐIzanagi°å¿é,»¹ÊÇPacific°å¿é.Ó¡Ö§ÆÚʱ,ÊÇFarallon plate and Izanagi plate with range subduction to SE China. Then,µ½ÑàɽÆÚʱ, ±íÏÖΪIzanagi plate and Pacific plate with range subduction to SE China. at least, ÎÒÃÇÄÜ¿´µ½ÔÚ¹Å̫ƽÑó°å¿éÉÏ´æÔÚ×ÅÕâÈý¿é°å¿é.
3Â¥2009-08-31 11:32:43
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ÁíÍâÒ»¸öÎÊÌâÒ²¾ÍËæÖ®¶øÉúÁË,¼´: ÕâЩ°å¿éÊÇÒòºÎ¶ø·Ö¿ªµÄ. ÓÐÈË˵ÊǵØá£Öù»òÕ߯äËü,ÕâÎÒ²»ÖªµÀ.µ«ÊÇÎÒÃÇ¿ÉÒÔ×·ËÝËûÃǵÄÒÆ¶¯·½Ïò. ËïÎÀ¶«ÔÚ2007ÄêEPSLÉϾÍдÁËһƪÎÄÕÂÊǹØÓÚ̫ƽÑ󸩳åÓëÖйú´ó½֮¼äµÄ¹ØÏµ,ÆäÖÐËûÌáµ½ÁË¿ÉÒÔÓôóÑóµºÁ´À´Ê¶±ðµ±Ê±Ñó¿ÇÆ¯ÒÆ·½Ïò. ºÜºÃµÄÏë·¨. ¶ÔÓÚ´óÑ󵺻¡,´ó¼ÒÓ¦¸Ã»òÕߴ󲿷ÖÈÏΪÊÇÓÉÓÚµØá£Öù²úÉúµÄ.ÒÔÏÄÍþÒĵºÁ´ºÍ»ÊµÛµºÁ´µÈ×îÎªÖøÃû¡£ÕâЩµºÁ´Ï²¿ÓÉÓÚÎȶ¨²»¶¯µÄµØá£ÖùÒ»Ö±ÉÏÓ¿£¬¶øÑó¿ÇÔÚ·¢ÉúÒÆ¶¯,ËùÒÔÕâÑù¾Í¿ÉÒÔÃ÷ÏԵĿ´³öÀ´´óÑóÑó¿ÇÊÇÈçºÎ·¢ÉúÔ˶¯µÄÁË.
4Â¥2009-08-31 11:39:38
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