摘要
<正>西南三江地区由于其特殊的构造位置,保存了古特提斯阶段演化的大量遗迹,历来是研究东特提斯演化以及冈瓦纳-劳亚大陆聚合过程的重要对象。然而,由于区内构造改造强烈,研究程度相对较弱,前人对区内构造演化的许多重大问题尚未达成一致,其中便包括古特提斯洋的俯冲极性问题。大多研究者倾向认为,古特提斯位于昌宁—孟连缝合带(Feng,2002;Metcalfe,2009;刘本培等,1 993;钟大赉,1998),或者为主支洋盆之一(Mo,1994),东向
引文
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