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在乔治王岛的古地磁研究中,从八个采点上采集了二十九个定向钻芯和十七个定向手标本,这些标本属于埃斯库拉湾群、菲尔德斯半岛群的第三纪安山岩熔岩流、第三纪的花岗闪长岩侵入体以及被认为属于晚侏罗世火山群的玄武岩墙和熔岩流。对这些标本共进行了十个钾-氩年龄的测定,每个采点上至少有一个年龄测定。埃斯库拉湾群、菲尔德斯半岛群以及花岗闪长岩侵入体所测年龄介于58-46百万年之间。晚侏罗世火山群由于受交代蚀变的影响,其视年龄的含义还不清楚。 早第三纪地层单元的六个采点中,有五个采点获得了可利用的古地磁资料,他们可用来进行平均地磁极位置的计算。由其计算出的早第三纪地磁极位于南纬81°,西径73°,与以前从菲尔德斯半岛群所测得结果的一致性很好。由晚侏罗世火山群所测得的两个虚地磁极位置与东部南极的侏罗纪地磁极位置非常一致;但由于这些样品的年龄不确定,这种一致性的含义还不清楚,虽然从南设得兰的所有可利用资料计算出的早第三纪平均地磁极(南纬77°,西径78°)与通过联结大洋洲与南极洲以及利用大洋洲的地磁极所推测的东部南极的早第三纪地磁极位置具有很好的一致性,但由于南设得兰群岛的数据具有很大的离散度,这种明显的一致性并不是可靠的。即使这次研究所得的平均地磁极位置是准确的,尽管这样,但还是可能有两种解释:要么从早第三纪以来南极就作为一个独立的板块开始运动;要么自从早第三纪以来南设得兰群岛在接近于现代南地磁极的位置上作了一点旋转。
In the paleomagnetic study of King George Island, 29 directional drill cores and 17 directional hand specimens were collected from eight sites, belonging to the third Eskulah Group and the third to the Filders Peninsula The Jurassic lava flows, the Tertiary granodiorite intrusions and the basalt walls and lava flows that are considered to belong to Late Jurassic volcanic groups. A total of ten potassium-argon age determinations were performed on these specimens, with at least one age determination at each sampling point. The Eskulawan, Filders Peninsula, and granodiorite intrusions range in age from 58 to 46 million years. Late Jurassic volcanic groups due to the impact of alteration alteration, its meaning as the age is unclear. Of the six acquisitions of early Tertiary stratigraphic units, five acquired available paleomagnetism data that they could use to calculate the average magnetic pole position. The early Tertiary geomagnetic poles calculated at this station are located at 81 ° S and 73 ° West with good agreement with the results previously obtained from the Filders Peninsula. The locations of the two virtual Earth’s magnetic poles measured by the Late Jurassic volcanic group are in good agreement with the Jurassic geomagnetic polar position of the eastern Antarctic; however, the meaning of this consistency is unclear due to the uncertain age of these samples, though The early Tertiary average geomagnetic poles (77 ° S, 78 ° West) calculated from all the available data in South Shetland and the preponderance of the eastern Antarctic predicted by the geomagnetic poles connecting Oceania with Antarctica and with Oceania Tertiary geomagnetic pole positions are well-congruent, but the apparent consistency is not reliable due to the large degree of dispersion of data in the South Shetland Islands. Even though the average magnetic pole position obtained in this study is accurate, nevertheless there are two possible explanations, either since the Antarctica began moving as a separate plate since the early Tertiary or since the early Tertiary The Shetland Islands rotated a bit closer to the poles of the modern south.