Tectonic Evolution of the Antarctic Sector of the Pacific Margin: Mesozoic and Paleozoic Development of Marie Byrd Land

西南极洲的构造演化及其与东南极洲的关系是南极大陆最基本的构造问题。它与全球板块相互作用、南大洋古环流、古环境和古生物地理有关，对大陆自身的发展具有根本性的意义。美国和英国联合进行的南极西部构造项目（1983- 1988）对威德尔海地区的构造演化有了相当大的了解。美国-新西兰-英国三方计划在玛丽伯德地进行研究，以完成我们对太平洋盆地南缘构造演化的了解。它将涉及实地和实验室调查，旨在阐明玛丽伯德地地壳块体的结构和演化及其与其他南极西部地壳块体、南极东部克拉通、新西兰和太平洋盆地的关系。这项研究包括构造、古地磁和地质年代学调查，特别是前新生代的发展和玛丽伯德地。

The tectonic evolution of West Antarctica and its relationship to East Antarctica is the most fundamental tectonic problem of the Antarctic continent. It bears on global plate interaction, paleocirculation in the Southern Ocean, paleoenvironment, and paleobiogeography as well as being fundamental to the development of the continent itself. The joint United States-United Kingdom West Antarctic Tectonics Project (1983-88) has shed considerable light on the tectonic evolution of the Weddell Sea region. A tripartite United States -New Zealand-United Kingdom program of study in Marie Byrd Land is planned to complete our understanding of the tectonic evolution of the southern rim of the Pacific Ocean basin. It will involve field and laboratory investigations designed to elucidate the structure and evolution of the Marie Byrd Land crustal block and its relationship to other West Antarctic crustal block, the east Antarctic craton, New Zealand and the Pacific Ocean basin. This study involves structural, paleomagnetic and geochronologic investigations bearing particularly on the pre-Cenozoic development and Marie Byrd Land.