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将研究来自太平洋板的现有DSDP和ODP玄武岩核心，以更新这些核心的白垩纪古磁数据。来自Ontong Java高原的玄武岩核心的最新结果表明它们是一致的，但与其他太平洋地区的玄武岩核心不符。这可能是因为来自许多太平洋钻孔的短玄武岩核心的测量很差或根本没有测量，并且PI提议进行新的测量。此外，许多较旧的研究都在二十年前使用的方法比当今可用的方法较少详细且歧视方法。 PI将研究来自ODP/DSDP站点1184、807、800、800、802、303-304、289、462、164、164、166、167、167、169和170的玄武岩核。如果这些核心可以在广泛的领域提供一致的结果，那么研究将为各种构成各种构造的综合行为而有很大的融合，使得各种构造的行为会造成多种混乱的行为。