Cenozoic uplift of Variscan Massifs in the Alpine foreland : timing and controlling mechanisms
Cenozoic uplift of Variscan Massifs in the Alpine foreland : timing and controlling mechanisms
复制标题
高山前陆瓦里斯坎地块的新生代隆起：时间和控制机制
DOI：
10.1016/j.gloplacha.2006.12.004
复制
发表时间：
2007
影响因子：
3.9
通讯作者：
P. Dèzes
中科院分区：
文献类型：
--
作者：
P. A. Ziegler;P. Dèzes
欧洲新生代裂谷系（ECRIS）及其相关断裂系统横贯阿尔卑斯山脉前陆的所有瓦里斯坎地块。ECRIS在始新世在比利牛斯山脉和阿尔卑斯山脉的前陆被激活，以响应与碰撞相关的板内应力的积累。渐新世至新近世期间，ECRIS在不断变化的应力场下被动裂陷演化，反映了渐新世末比利牛斯山的固结和阿尔卑斯造山带与其前陆的耦合增强。ECRIS目前仍在活动，其地震活动和大地测量数据证明了这一点。中央地块和莱茵地块的隆升始于渐新世-中新世过渡时期，其主要原因是地幔岩石圈与羽流相关的热减薄。中布尔底纪西东向的伏日-黑森林拱的隆升，具有被上莱茵河地堑破坏的双重俯冲背斜的几何形状，涉及岩石圈的褶皱。波西米亚地块北部布尔迪加里亚晚期的广泛隆升反映了岩石圈的弯曲，而其边缘块体的晚中新世-上新世隆升则涉及到先前地壳不连续的跨洋再激活。横跨ECRIS的地壳延伸，总共不超过7公里，被巴黎盆地块体的有限顺时针旋转、Weald-Artois轴的向上弯曲和armoramerican剪切带的重新激活所补偿。中新世开始的美洲地块断断续续的渐进式隆升是由岩石圈的挤压变形引起的。在中新世早期形成并在上新世进一步加强的现今北西向挤压应力场作用下，阿莫里亚地块、中部地块、莱茵地块西部和波西米亚地块北部继续以1.75 mm/年的速度上升，而福日—黑森林拱则相对稳定。Variscan地块的隆升和ECRIS的发育对高寒前陆新近纪的水系演化起着重要的控制作用。
The European Cenozoic Rift System (ECRIS) and associated fault systems transect all Variscan Massifs in the foreland of the Alps. ECRIS was activated during the Eocene in the foreland of the Pyrenees and Alps in response to the build-up of collision-related intraplate stresses. During Oligocene and Neogene times ECRIS evolved by passive rifting under changing stress fields, reflecting end Oligocene consolidation of the Pyrenees and increasing coupling of the Alpine Orogen with its foreland. ECRIS is presently still active, as evidenced by its seismicity and geodetic data. Uplift of the Massif Central and the Rhenish Massif, commencing at the Oligocene–Miocene transition, is mainly attributed to plume-related thermal thinning of the mantle–lithosphere. Mid-Burdigalian uplift of the SW–NE-striking Vosges–Black Forest Arch, that has the geometry of a doubly plunging anticline breached by the Upper Rhine Graben, involved folding of the lithosphere. Late Burdigalian broad uplift of the northern parts of the Bohemian Massif reflects lithospheric buckling whereas late Miocene–Pliocene uplift of its marginal blocks involved transpressional reactivation of pre-existing crustal discontinuities. Crustal extension across ECRIS, amounting to no more than 7 km, was compensated by a finite clockwise rotation of the Paris Basin block, up warping of the Weald–Artois axis and reactivation of the Armorican shear zones. Intermittent, though progressive uplift of the Armorican Massif, commencing in the Miocene, is attributed to transpressional deformation of the lithosphere. Under the present-day NW-directed compressional stress field, that came into evidence during the early Miocene and further intensified during the Pliocene, the Armorican Massif, the Massif Central, the western parts of the Rhenish Massif and the northern parts of the Bohemian Massif continue to rise at rates of up to 1.75 mm/y whilst the Vosges–Black Forest arch is relatively stable. Uplift of the Variscan Massifs and development of ECRIS exerted strong controls on the Neogene evolution of drainage systems in the Alpine foreland.