Paleolatitudes of the Pacific Plate in the Cretaceous: Comparative Paleomagnetic Investigation on ODP and DSDP Basaltic Cores

白垩纪太平洋板块的古纬度：ODP和DSDP玄武岩核的古地磁对比研究

• 批准号: 0327431
• 负责人: Xixi Zhao
• 金额: $ 24.74万
• 依托单位: University of California-Santa Cruz
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2004
• 资助国家: 美国
• 起止时间: 2004-02-01 至 2008-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0327431&HistoricalAwards=false
• 关键词: Paleolatitudes; Pacific; Plate; Cretaceous; Comparative

The PI will investigate existing DSDP and ODP basalt cores from the Pacific Plate to update the Cretaceous paleomagnetic data from these cores. Recent results from basalt cores from the Ontong Java Plateau show them to be consistent but discrepant from basalt cores from other Pacific locations. This may be because short basalt cores from many Pacific boreholes have been measured poorly or not at all, and the PI proposes to make new measurements. In addition, many older studies are over two decade ago using less detailed and discriminating methodologies than those available today. The PI will study basalt cores from ODP/DSDP Sites 1184, 807, 800, 802, 303-304, 289, 462, 164, 166, 167, 169 and 170. If these cores can provide consistent results over a broad area, then the study will go a long way to clearing up a much of confusion about various hypotheses about paleomagnetic behavior.

PI将调查来自太平洋板块的现有DSDP和ODP玄武岩岩心，以更新这些岩心的白垩纪古地磁数据。最近的结果显示，从翁东爪哇高原玄武岩岩芯，他们是一致的，但不一致的玄武岩岩芯从其他太平洋地区。这可能是因为许多太平洋钻孔的短玄武岩岩心测量得很差或根本没有测量，PI建议进行新的测量。此外，许多较早的研究是二十多年前的，使用的方法不如今天的详细和有区别。 PI将研究ODP/DSDP站点1184、807、800、802、303-304、289、462、164、166、167、169和170的玄武岩岩心。 如果这些岩心能够在一个广阔的区域提供一致的结果，那么这项研究将大大有助于澄清关于古地磁行为的各种假设的混乱。