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New insights into tectonics and evolution of the Amerasia Basin

机译:亚美尼亚盆地构造和演化的新见解

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摘要

Two alternative tectonic models for the formation of the Amerasia Basin are presented. The models provide a series of paleoreconstructions based on comprehensive analysis of bathymetry, gravity, and magnetic fields of the Arctic region, combined with available seismic survey and geological data. The two equally probable alternatives for the kinematics behind the early stage formation of the proto-Canada Basin, rely on three alternative age models for the timing of the tectonic events. The first two models date the opening of the central, oceanic part of the Canada Basin to before or after similar to 124 Ma. The third model considers that the formation of the entire basin, including the lateral parts, occurred after similar to 125 Ma.
机译:提出了两种可供选择的构造模式,用于形成亚美尼亚盆地。这些模型在对北极地区的测深法,重力和磁场进行综合分析的基础上,结合可用的地震勘测和地质数据,提供了一系列古构造。加拿大原始盆地早期形成背后的两个运动学上同样可能的替代方法,是根据三个年龄模型来确定构造事件的时间。前两个模型将加拿大盆地中部海洋部分的开放日期定为大约124 Ma之前或之后。第三个模型认为整个盆地(包括侧面部分)的形成是在类似于125 Ma之后发生的。

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