Studies of basement‐bounded canyons in West Greenland show that these were long‐lasting features that extended inland for several hundreds of kilometres, acting as prominent sediment conduits sourcing the Albian–Palaeocene Nuussuaq Basin during several phases of basin evolution. The Ilulissat Icefjord canyon was the major conduit for sediment into the basin and provenance data indicate that it had a huge catchment area that extended to East Greenland. The Uparuaqqusuitsut canyon was also an important conduit for sediment in the northern part of the basin. It is suggested that the initial canyon formation occurred during uplift events in the Late Triassic and Late Jurassic when the deeply weathered basement surface formed during Early–Middle Triassic time was eroded. The recognition of these canyons as long‐lasting sediment conduits have huge implications for understanding the sediment distribution, source‐to‐sink studies and the palaeogeography of the North Atlantic basins.

中文翻译：

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遗传的地下室峡谷：对北大西洋沉积物分布的影响

对西格陵兰岛以地下为界的峡谷的研究表明，这些峡谷是长久的特征，向内陆延伸了数百公里，在盆地演化的几个阶段中充当了吸引阿尔比亚－古新世Nuussuaq盆地的重要沉积管道。伊卢利萨特（Ilulissat）冰峡湾峡谷是沉积物进入盆地的主要管道，物源数据表明它有一个巨大的集水区，延伸到东格陵兰岛。Uparuaqqusuitsut峡谷也是盆地北部沉积物的重要管道。这表明最初的峡谷形成发生在三叠纪晚期和侏罗纪晚期的隆​​升事件中，而三叠纪早期至中三叠纪时期形成的深部风化基底表面被侵蚀了。