Long-lived connection between the North China and North Australian cratons in supercontinent Nuna: paleomagnetic and geological constraints

• 来源期刊: 科学通报（英文版）
• 年，卷（期）: 2019,（13）
• 页码范围: 873-876
• 页数: 4页
• 语种: 英文

摘要

It has been proposed by Zhang et al.[1] that the northern part of the North China Craton (NCC) was connected to the north-western part of the North Australian Craton (NAC) in the Proterozoic,mainly based on the radial geometry of correlative ～1.32 Ga dyke swarms in the two cratons (Fig.1a).While the hypothetical connection between the NCC and the NAC was thought to be paleomagnetically permissible at ～1.80-1.78Ga but with a slightly different configuration [2],the exact duration of either configuration is uncertain (e.g.,[2,3]).Here we present a comparison of up-to-date paleomagnetic poles,together with a detailed comparison of the geological records,of both cratons to evaluate a potential long-lasting connection between the NCC and the NAC throughout the Proterozoic.