The Brazeau Lake slide, Jasper National Park, Alberta
The Brazeau Lake slide, Jasper National Park, Alberta
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布拉佐湖滑梯，贾斯珀国家公园，艾伯塔省
DOI：
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发表时间：
1982
期刊：
影响因子：
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通讯作者：
D. Cruden
中科院分区：
文献类型：
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作者：
D. Cruden
一次历史性的大型岩石滑坡使约翰-约翰溪向北改道，进入现在的河道，流入阿尔伯塔碧玉国家公园落基山脉的布劳湖。滑坡碎片从“莫拉德山”东北面的悬崖向东北移动，莫拉德山是大布劳的平岭东北部的一座无名山峰。碎片到达布劳湖岸边，平面面积为0.9平方公里，平均宽度为500米。 碎片的平均厚度估计为5米，因此移动的物质的体积为4.5 × 106立方米。 从滑动冠到碎片尖端的角度约为18°。对滑坡的消耗和堆积的近似重建表明，23°是滑坡碎屑摩擦角的下限。滑坡的暴露破裂面是中寒武统皮卡组下部的层面，向东北倾斜27°。来自皮卡组的白云岩、石灰岩和页岩形成了滑坡碎屑。The slide si.
An historic major rockslide has diverted John-John Creek northwards to its present channel flowing into Brazeau Lake in the Main Ranges of the Rockies in Jasper National Park, Alberta.The slide debris moved northeastwards from cliffs on the northeastern face of "Molard Mountain," an unnamed peak northeast of Flat Ridge in the Grand Brazeau. It reached the shores of Brazeau Lake.The debris occupies a plan area of 0.9 km2 with an average width of 500 m. An estimated average debris thickness of 5 m gives a volume of the displaced mass of 4.5 × 106 m3. The angle from the slide crown to the tip of the debris is about 18°. An approximate reconstruction of the depletion and accumulation of the slide suggests 23° as a lower bound for the angle of friction of the slide debris.The exposed rupture surface of the slide, a bedding plane in the lower portion of the Middle Cambrian Pika Formation, dips at 27° to the northeast. Dolostones, limestones, and shales from the Pika Formation form the slide debris. The slide si...