[The Laplace Bjerg exhumed hydrocarbon trap in East Greenland. Superb exposures of both this fault bounded horst and the tilted fault block of the Mols Bjerge have allowed detailed mapping to be carried out. Both of these exhumed hydrocarbon traps were sealed, at depth, by Cretaceus mudstones, which blanketed much of East Greenland. The identification of pyrobitumen, resulting in a dark staining in the sandstones, has allowed the distribution of the palaeohydocarbon accumulation to be assessed and intra reservoir compartmentalisation by thick, mature calcretes to be recognised. Palynological analysis has determined a Triassic age for the main reservoir units providing evidence for a further potential play in the North Atlantic petroleum system. , Abstract Previous work has demonstrated the presence of a number of exhumed hydrocarbon traps in central East Greenland. Re‐evaluation of the stratigraphy alongside detailed investigation of the occurrence of bitumen within the Mols Bjerge and Laplace Bjerg exhumed hydrocarbon traps provides new perspectives on these structures, as well as the petroleum geology of East Greenland and the wider North Atlantic. Sedimentological and stratigraphic studies, augmented with palynological and provenance investigations, have constrained the dating and correlation of the strata exposed in the Mols Bjerge and Laplace Bjerg. Petrographic analysis, alongside analysis of the bitumen identified, has highlighted a much wider distribution of hydrocarbon than previously recognized. It was previously considered that Jurassic strata formed the main reservoir interval within the Mols Bjerge and Laplace Bjerg exhumed hydrocarbon traps. It is shown here that the reservoir intervals in the Laplace Bjerg trap lie within the Late Triassic Orsted Dal and Vega Sund members, which contain up to 18% pyrobitumen and were previously misidentified as Jurassic. The Jurassic Bristol Elv Formation is the most extensively bitumen stained unit in the Mols Bjerge trap. However, occurrences of pyrobitumen (up to 3%) are recorded throughout the Triassic stratigraphy, including the Early Triassic Wordie Creek Formation. Faults, thick calcrete development and regionally continuous mudstone units play an important role in compartmentalizing the palaeohydrocarbon accumulations.]

中文翻译：

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北大西洋边缘挖掘出的碳氢化合物圈闭：地层学、古生物学、物源和沥青分布，综合方法

[Laplace Bjerg 在东格陵兰挖掘出碳氢化合物圈闭。这个断层边界地垒和 Mols Bjerge 的倾斜断层块的出色暴露使得可以进行详细的测绘。这两个开采出来的油气圈闭都被白垩纪泥岩在深处封闭，这些泥岩覆盖了东格陵兰岛的大部分地区。焦沥青的鉴定会导致砂岩中的深色染色，从而可以评估古碳氢化合物的分布，并可以识别厚厚的成熟钙质混凝土对储层内部的划分。孢粉学分析确定了主要储层单元的三叠纪时代，为北大西洋石油系统的进一步潜在作用提供了证据。, 摘要 以前的工作已经证明在东格陵兰岛中部存在许多开采的碳氢化合物圈闭。重新评估地层并详细调查 Mols Bjerge 和 Laplace Bjerg 开采的碳氢化合物圈闭内的沥青，为这些结构以及东格陵兰和更广阔的北大西洋的石油地质提供了新的视角。沉积学和地层学研究，加上孢粉学和来源调查，限制了 Mols Bjerge 和 Laplace Bjerg 中暴露地层的年代和相关性。岩相分析以及对已识别沥青的分析突出了比以前认识的更广泛的碳氢化合物分布。以前认为侏罗纪地层形成了 Mols Bjerge 和 Laplace Bjerg 开采油气圈闭内的主要储层层段。此处显示拉普拉斯 Bjerg 圈闭中的储层区间位于晚三叠世 Orsted Dal 和 Vega Sund 成员内，其中包含高达 18% 的焦沥青，并且之前被误认为是侏罗纪。Jurassic Bristol Elv Formation 是 Mols Bjerge 圈闭中沥青污染最严重的单元。然而，在整个三叠纪地层，包括早三叠纪沃迪溪组，都记录了焦沥青的出现（高达 3%）。断层、厚钙质发育和区域连续的泥岩单元在划分古油气藏方面起着重要作用。] 此处显示拉普拉斯 Bjerg 圈闭中的储层区间位于晚三叠世 Orsted Dal 和 Vega Sund 成员内，其中包含高达 18% 的焦沥青，并且之前被误认为是侏罗纪。Jurassic Bristol Elv Formation 是 Mols Bjerge 圈闭中沥青污染最严重的单元。然而，在整个三叠纪地层，包括早三叠纪沃迪溪组，都记录了焦沥青的出现（高达 3%）。断层、厚钙质发育和区域连续的泥岩单元在划分古油气藏方面起着重要作用。] 此处显示拉普拉斯 Bjerg 圈闭中的储层区间位于晚三叠世 Orsted Dal 和 Vega Sund 成员内，其中包含高达 18% 的焦沥青，并且之前被误认为是侏罗纪。Jurassic Bristol Elv Formation 是 Mols Bjerge 圈闭中沥青污染最严重的单元。然而，在整个三叠纪地层，包括早三叠纪沃迪溪地层，都记录了焦沥青的出现（高达 3%）。断层、厚钙质发育和区域连续的泥岩单元在划分古油气藏方面起着重要作用。] Jurassic Bristol Elv Formation 是 Mols Bjerge 圈闭中沥青污染最严重的单元。然而，在整个三叠纪地层，包括早三叠纪沃迪溪组，都记录了焦沥青的出现（高达 3%）。断层、厚钙质发育和区域连续的泥岩单元在划分古油气藏方面起着重要作用。] Jurassic Bristol Elv Formation 是 Mols Bjerge 圈闭中沥青污染最严重的单元。然而，在整个三叠纪地层，包括早三叠纪沃迪溪组，都记录了焦沥青的出现（高达 3%）。断层、厚钙质发育和区域连续的泥岩单元在划分古油气藏方面起着重要作用。]