Seismic and thermal measurements on the Nova Scotia slope

新斯科舍省斜坡的地震和热测量

• 批准号: 387217-2010
• 负责人: Louden, Keith
• 金额: $ 15.48万
• 依托单位: Dalhousie University
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Ship Time
• 财政年份: 2010
• 资助国家: 加拿大
• 起止时间: 2010-01-01 至 2011-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=464088
• 关键词: Seismic; thermal; measurements; Nova; Scotia

Two primary classes of rifted continental margins, volcanic and non-volcanic, have been recognized based on the amount of volcanism that occurs during lithospheric extension. The Nova Scotia margin is located in a unique position bounding volcanic margins to its south and non-volcanic margins to its north, providing an opportunity to study the nature of the transition between the two margin types. Major structures within crystalline basement offshore Nova Scotia have been imaged on multi-channel seismic reflection profiles, recently made available to us, that may be related to this transition. The volcanic to non-volcanic margin boundaries, in addition, are coincident with significant changes in sedimentary structures. We propose to conduct geophysical measurements, including two seismic refraction lines and the completion of four marine heat flow transects, on profiles across and along the Nova Scotia continental slope to better understand the nature of the transitional structures, including their potential influence on the generation of hydrocarbon resources. These data are directly related to our Discovery Grant research awards and are specifically required by two other joint research projects that have been funded.

根据岩石圈伸展过程中火山活动的数量，裂陷大陆边被分为火山型和非火山型两大类。新斯科舍省的边缘位置独特，南部为火山边缘，北部为非火山边缘，因此有机会研究两种边缘类型之间的过渡性质。最近提供给我们的多道地震反射剖面对新斯科舍省近海结晶基底内的主要结构进行了成像，这可能与这种过渡有关。此外，火山与非火山边缘的边界与沉积构造的重大变化相吻合。我们提议对横跨新斯科舍省大陆坡和沿着大陆坡的剖面进行地球物理测量，包括两条地震折射线和完成四条海洋热流剖面，以更好地了解过渡结构的性质，包括其对油气资源生成的潜在影响。这些数据与我们的发现补助金研究奖直接相关，并且是其他两个已资助的联合研究项目所特别要求的。