维普中文期刊产品整合服务
2篇 您的检索式:作者名="JonDobson"
    题名 作者 年代 出处 被引量
1华南板块的旋转运动显示文摘80年代以来,对扬子地区进行了较大范围的古地磁学研究,月前已获得了一大批显生宙各主要时期的数据,据此建立了APW曲线。然而,东南地区尚极少见已发表的资料。为进一步确定华南地区板块构造的格局与中生代造山作用之前的演化历史,我们于1989年12月在位于华南板块的广东省连县附近(112.4°E,24.9°N),采集了(?)_3-T_1的古地磁样品。陈海泓 孙枢 李继亮 许靖华 FriedrichHeller JonDobson 1992科学通报1992,37,8:5
2Permo-Triassic Magnetostratigraphy in Wulong Area, Sichuan, China显示文摘The Permo-Triassic boundary in Wulong area, Sichuan Province, South China lies in a continuous marine carbonate succession with abundant fossil records. Two well-exposed sections were sampled for magnetostratigraphic studies. The experimental results of rock magnetism reveal that the samples from the Triassic limestones contain only magnetites among which 70% are multi-domain. The ChRM direction is carried by remaining 30% of single-domain magnetite. The Permian limestone samples are dominated by single-domain to superparamagnetic magnetites with little ChRM direction due to their fine-grained texture. Nevertheless, the polarity determination is still possible based on the NRM vector changes during thermal demagnetization. A Permo-Triassic polarity profile in Wulong area is established in the paper, and a tentative correlation with other known profiles is pursued. The authors suggest that the Illawarra reversal starts at the upper part of Wujiapingian, while some normal polarity events may exist in陈海泓 孙枢 李继亮 FriedrichHeller JonDobson Friedrich Heller and Jon Dobson 1994Science China Chemistry1994,37,2:1
返回顶部 每页显示:
共1页 首页 上一页 第1页 下一页 末页 /1 跳转

网站首页 | 关于我们 | 联系我们 | 产品服务 | 客服中心 | 广告服务 | 版权声明 | 网站联盟 | 友情链接 | 售卡网点

版权所有© 渝B2-20050021-1 渝公网安备 50019002500403号 违法和不良信息举报中心

互联网出版许可证 新出网证(渝)字10号 全国400电话 - 免长途话费