Rotliegend sediment distribution: a result of late Carboniferous movements
Rotliegend sediment distribution: a result of late Carboniferous movements
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Rotliegend 沉积物分布：晚石炭世运动的结果
DOI：
10.1144/gsl.sp.1990.055.01.06
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发表时间：
1990
期刊：
影响因子：
--
通讯作者：
K. Glennie
中科院分区：
文献类型：
--
作者：
K. Glennie
摘要 西北欧Rotliegend沙漠砂岩的分布主要是石炭纪或更早时期的四次地质事件的结果。 (1) 威斯特伐利亚向北移动的劳俄罗斯与快速移动的冈瓦纳大陆之间的碰撞达到顶峰，形成了东西走向的瓦里斯坎山脉，该山脉是前弧后前陆后续盆地的罗特利根德河流沉积物的主要来源。 (2) 在劳俄罗斯和冈瓦纳大陆最终交汇期间，西部瓦里斯坎山坡可能充当楔子，使劳俄罗斯陷入张张状态，并利用苏格兰-格陵兰岛和挪威喀里多尼德群岛之间的旧薄弱线、土卫八缝合线和托恩奎斯特线，启动了NW-SE和共轭NE-SW的地堑系统。 (3) 造山运动晚期，劳俄罗斯和冈瓦纳大陆之间的相对运动也引起了走滑断层作用，导致瓦里斯坎山脉的快速塌陷，以及下罗特利根火山喷发穿过瓦里斯坎前陆的部分地区。火山活动结束后，二叠纪盆地发生热沉降，其中许多盆地的热沉降速度超过了沉积速度。 (4) 劳俄罗斯向北漂移将欧洲西北部从石炭纪煤炭沉积的赤道带带到了北半球信风沙漠的纬度，在那里它位于瓦里斯坎山脉的雨影区。
Abstract The distribution of Rotliegend desert sandstones in Northwest Europe was mainly the outcome of four geological events that originated in the Carboniferous or earlier. (1) Westphalian culmination of collision between north-moving Laurussia and the faster moving Gondwana resulted in the E-W trending Variscan Mountains, which were to be the main source of Rotliegend fluvial sediment over successor basins to the former back-arc foreland. (2) During final convergence between Laurussia and Gondwana, the western Variscan orocline probably acted as a wedge that put Laurussia into transtension and, utilizing old lines of weakness, the Iapetus Suture between the Scottish-Greenland and Norwegian Caledonides and the Tornquist Line, initiated NW-SE and conjugate NE-SW systems of grabens. (3) Late orogenic relative movement between Laurussia and Gondwana also caused strike-slip faulting, related rapid collapse of the Variscan Mountains and the extrusion of Lower Rotliegend volcanics through parts of the Variscan foreland. The end of volcanism was followed by thermal subsidence of the Permian basins, many of them at rates that exceeded those of sedimentation. (4) The northward drift of Laurussia carried NW Europe from the equatorial zone of Carboniferous coal deposition to the latitude of a northern hemisphere trade-wind desert, where it lay in the rain shadow of the Variscan Mountains.