Investigation of Island uplift of the Azores Island region

亚速尔群岛地区岛屿隆起调查

• 批准号: 193771886
• 负责人: Professorin Dr. Christine Thomas
• 金额: --
• 依托单位: School of Earth Sciences
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2011
• 资助国家: 德国
• 起止时间: 2010-12-31 至 2014-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/193771886?language=en
• 关键词: Investigation; Island; uplift; Azores; region

Volcanic ocean islands that are neither arcs nor continental fragments are common features in the oceans. Their geology records past sea level in the form of wave-cut platforms, transitions of lava flow morphologies from subaerial to submarine, and carbonate terraces. These features, accurately dated, contribute positional information for eustatic sea level curves through time. However, they can be affected by local uplift processes at the individual edifice scale due to longer-term island volcanism. To document this process better, and to understand how it arises geophysically, we are proposing a combined field work, seismological, gravity and dynamic modeling study to measure and date uplift in two islands of the Azores archipelago. The objectives are to provide uncertainty bounds on eustatic sealevel markers derived from ocean islands, and to improve our understanding of the enigmatic process of ocean island volcanism.

火山海洋岛既不是弧，也不是大陆碎片，这是海洋的共同特征。它们的地质记录以波浪切割平台的形式超越海平面，从陆上到海底的熔岩流形态转变，以及碳酸盐阶地。这些特征经过精确的年代测定，为海平面随时间的波动曲线提供了位置信息。然而，由于长期的岛屿火山作用，它们可能受到个别大厦规模的局部隆起过程的影响。为了更好地记录这一过程，并了解它是如何在地球物理学上产生的，我们提出了一项结合实地工作、地震学、重力和动态建模研究的研究，以测量亚速尔群岛两个岛屿的隆起并确定其日期。目的是提供海洋岛屿的海平面上升标志的不确定界限，并提高我们对海洋岛屿火山作用的神秘过程的理解。

项目成果

Systematics, palaeoecology and palaeobiogeography of the Neogene fossil sharks from the Azores (Northeast Atlantic)

亚速尔群岛（东北大西洋）新近纪鲨鱼化石的系统学、古生态学和古生物地理学

• DOI: 10.1016/j.annpal.2012.04.001
• 发表时间: 2012
• 期刊: Annales De Paleontologie
• 影响因子: 1
• 作者: Ávila;Ramalho
• 通讯作者: Ramalho

Coastal evolution on volcanic oceanic islands: A complex interplay between volcanism, erosion, sedimentation, sea-level change and biogenic production

• DOI: 10.1016/j.earscirev.2013.10.007
• 发表时间: 2013-12
• 期刊: Earth-Science Reviews
• 影响因子: 12.1
• 作者: R. Ramalho;R. Quartau;A. Trenhaile;N. Mitchell;C. Woodroffe;S. Ávila

Depositional processes on oceanic island shelves – Evidence from storm‐generated Neogene deposits from the mid‐North Atlantic

大洋岛架上的沉积过程——来自北大西洋中部风暴生成的新近纪沉积物的证据

• DOI: 10.1111/sed.12055
• 发表时间: 2013
• 期刊: Sedimentology
• 影响因子: 3.5
• 作者: MeirelesR;QuartauR;RamalhoR;RebeloA;MadeiraJ;ZanonV;ÁvilaS.
• 通讯作者: ÁvilaS.