The Scandinavian mountain chain: deep processes (TopoScandiaDeep)

斯堪的纳维亚山脉：深层过程 (TopoScandiaDeep)

• 批准号: 71431489
• 负责人: Professor Dr. Joachim Ritter
• 金额: --
• 依托单位: Institut for Geoscience
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2008
• 资助国家: 德国
• 起止时间: 2007-12-31 至 2010-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/71431489?language=en
• 关键词: Scandinavian; mountain; chain; deep; processes

Mountains form mostly at convergent or strike-slip margins and are not expected to form in intraplate settings. Uplift occurred, however, in various places around the northeast Atlantic after continental break-up took place in the earliest Eocene. Several dome-like structures have been identified along the continental margins in northern Europe (northern and southern Norway, Scotland), Spitzbergen, Greenland (Japsen and Chalmers, 1999; Japsen et al., 2006). Identification of uplift at the continent-ocean transition led to a number of early dynamic models relating the uplift directly to the North Atlantic rifting event at around 60 Ma (Chery et al., 1992; Clift et al., 1998). However, there is a growing body of evidence indicating that much of the observed uplift post-dates rifting by several 10’s of Ma and probably occurred in several stages (Japsen and Chalmers, 1999; Japsen et al., 2006; Rohrmann and van der Beek, 1996). Moreover, the fact that uplift is not uniform along the margins (Japsen and Chalmers, 1999; Lundin and Dore, 2002) but instead is concentrated into discrete dome-like structures suggests that there is no simple 1-to-1 correspondence between rifting and uplift. None of the suggested models (e.g. climatic forcing, emplacement of mantle plume material underneath the lithosphere, possibly in relation to the Icelandic hotspot, magmatic underplating, intraplate compression or flexural coupling to the uplifted, thinned rift itself) has firm support from existing data. In order to understand the mechanisms of Neogene uplift, we need to know how the topographic load is supported, i.e., isostatically, dynamically, or flexurally. If the support is by isostatic compensation, where is the corresponding buoyancy located? (In the crust, lithosphere, or sub-lithospheric mantle?). In this proposal, we will concentrate on analysing the two domes located in Scandinavia, the Northern and Southern Scandinavian mountain ranges (Scandes).

山脉主要形成于会聚或走滑边缘，预计不会形成于板内环境。然而，在最早的始新世大陆分裂之后，在大西洋东北部的许多地方都发生了不稳定。在北方（挪威北方和挪威南部、苏格兰）、斯匹茨卑尔根、格陵兰岛的大陆边缘发现了几个沿着圆顶状结构（Japsen和查尔默斯，1999年; Japsen等人，2006年）。对大陆-海洋过渡期隆起的识别导致了许多早期动力学模型，这些模型将隆起直接与大约60 Ma的北大西洋裂谷事件联系起来（Chery等人，1992; Clift等人，1998年）。然而，越来越多的证据表明，所观察到的大部分隆起发生在几十年前的裂谷之后，可能发生在几个阶段（Japsen和查尔默斯，1999年; Japsen等人，2006; Rohrmann和货车der比克，1996）。此外，沿边缘的隆起并不是沿着均匀的（Japsen和查尔默斯，1999; Lundin和Dore，2002），而是集中在离散的圆顶状结构中，这一事实表明，裂谷和隆起之间并不存在简单的一一对应关系。没有一个建议的模型（例如气候强迫，地幔柱物质在岩石圈下的就位，可能与冰岛热点，岩浆底侵作用，板内压缩或弯曲耦合到隆起，变薄的裂谷本身）有坚定的支持，从现有的数据。为了理解新近纪隆升的机制，我们需要知道地形载荷是如何支撑的，即，均衡地、动态地或弯曲地。如果支撑是均衡补偿的，那么相应的浮力在哪里？(In地壳、岩石圈或亚岩石圈地幔？在本提案中，我们将集中分析位于斯堪的纳维亚半岛的两个圆顶，即斯堪的纳维亚半岛的北方和南方山脉（斯堪的纳维亚山脉）。

项目成果

New constraints on the 3D shear wave velocity structure of the upper mantle underneath Southern Scandinavia revealed from non-linear tomography

非线性断层扫描揭示了斯堪的纳维亚半岛南部下方上地幔 3D 剪切波速度结构的新约束

• DOI: 10.1016/j.tecto.2012.12.033
• 发表时间: 2013
• 期刊: Tectonophysics
• 影响因子: 2.9
• 作者: Wawerzinek;Ritter;J.R.R.
• 通讯作者: J.R.R.

Complex deep seismic anisotropy below the Scandinavian Mountains

斯堪的纳维亚山脉下方复杂的深层地震各向异性

• DOI: 10.1007/s10950-012-9325-4
• 发表时间: 2013
• 期刊: Journal of Seismology
• 影响因子: 1.6
• 作者: Ritter;J.R.R.
• 通讯作者: J.R.R.

The deep structure of the Scandes and its relation to tectonic history and present-day topography

斯坎德山脉的深层结构及其与构造历史和现今地形的关系

• DOI: 10.1016/j.tecto.2013.03.010
• 发表时间: 2013
• 期刊: Tectonophysics
• 影响因子: 2.9
• 作者: Maupin;Agostini;Artemieva;Balling;Beekman;Ebbing;England;Frassetto;Gradmann;Jacobsen;Köhler;Kvarven;Medhus;Mjelde;Ritter;Sokoutis;Stratford;Wawerzinek
• 通讯作者: Wawerzinek