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本文应用沉积层系制图法分析了阿拉斯加北部和加拿大西北部晚泥盆世到现代的地质演变和烃类生聚地。共鉴别出8个沉积巨层系,每一个都记录了盆地演变过程中的一个独立而重要的阶段。三个最古老的巨层系命名为埃尔斯米尔(Elle-smerian),它反映了不断下沉的褶皱带之上的沉积作用。其后的两个早像罗世到阿普第期的巨层系称作波弗特(Beaufortian)。它记录了从侏罗纪天折裂谷幕到接着于欧特里夫期开始的成功裂谷幕之间这段约达一亿年的扩张期。这一扩张导致了大洋性的加拿大盆地的张开。最后的三个巨层系记录了布鲁克(Brookian)造山幕在不同地理位置上的脉动。已证实的重要烃类生聚地出现于阿拉斯加北部的巴罗(Barrow)隆起。这是一个容量很大但在很大程度上又受到限制的含烃区,它是由于波弗特裂谷与布鲁克造山构造之间的建设性干扰而发育起来的。还发现了另外两个相对较小的含烃区,即加拿大西北部的麦肯齐(Machenzie)三角洲和克格马里特(Kugmallit)槽地,它们发育在恰位于布鲁克造山隆起影响之外的一个被动沉降盆地内。
In this paper, we use sediment mapping to analyze the geological evolution and hydrocarbon accumulation of the Late Devonian to modern times in northern Alaska and northwestern Canada. A total of 8 sedimentary giant beds were identified, each of which recorded an independent and important stage in the evolution of the basin. The three oldest megalospheres, named Elle-smerian, reflect the sedimentation on the continuously subsided fold belt. The next two, like the Beaufortian, are called the Beaufortian. It documents the expanse of about 100 million years between the Jurassic days of rift and the success of the Rift Valley, which began in the Ordévez period. This expansion led to the opening of the oceanic Canadian basin. The last three megalodonts record the pulsations of the Brookian orogen in different geographical locations. Confirmed hydrocarbons are clustered in the Barrow uplift in northern Alaska. This is a large but largely restricted hydrocarbon zone developed due to the constructive interference between the Beaufort Rift and the Brucker orogeny. Two other relatively smaller hydrocarbon-bearing areas were also discovered, the Machenzie Delta and Kugmallit troughs in northwestern Canada, which developed at a site just outside of the Brook uplift Passive settlement basin.