The sedimentary succession of 51-m consisting of a thin coal seam (1 m) and oil shale with a marlstone and carbonate-mudstone matrix of the Lower Carboniferous (Viséan) Emma Fiord Formation located on the Grinnell Peninsula, Devon Island, Arctic Canada was examined. The techniques used include reflected light microscopy, and instrumental neutron activation analysis (INAA) for elemental concentration, and inductively coupled plasma emission spectrometry (ICPES) for boron concentration.

The coal and oil shale was deposited in a lacustrine, freshwater environment. Due to the climatic variation, two types of oil shale were developed based on the amount of precipitation. One with carbonate-mudstone matrix, with high calcite (75%) and low TOC (1.14–1.87%) content. The other a marlstone-dominated matrix with high aluminosilicate (64%) and TOC (16.4–53.6%) content.

Oil shale from Emma Fiord experienced a slow rate of sedimentation and terrestrial flux as determined using Th/K/ Na/K, ratios Mn/Ca ratio to Ca respectively, and compared to the oil shale of Carboniferous age deposited in a lacustrine environment with a regular rate of recharge/discharge. The redox conditions for the Emma Fiord oil shale indicate anoxic to dysoxic conditions based on the variation of Cr and V + Ni.

Thorium and U systematics indicate that U is more concentrated in oil shale with marlstone matrix and is associated with clay minerals and organic matter (OM), similar to the Carboniferous oil shale from the Big Marsh. The authigenic U is associated with TOC content and is higher for oil shale with the marlstone matrix.

The variation of U with TOC indicates both paleo-productivity and preservation and is higher for oil shale with the marlstone matrix.

The concentration of rare earth elements (REEs) is 95% due to the presence of light rare earth elements (LREEs) in both oil shale with marlstone and carbonate-mudstone matrices.

The REES were normalized to the post-Archean average shale (PAAS). The high volatile bituminous coal at the base of the oil shale sections displays a flat, featureless pattern. The oil shale with a carbonate matrix decreases slightly from light rare earth elements (LREEs) to heavy rare earth elements (HREES). In contrast, the REEs concentration for oil shale with the marlstone matrix decreases more sharply from the LREEs (La-Eu) to HREEs (Tb-Lu). It displays a weak negative Eu anomaly typical of the upper continental crust.

位于加拿大北极地区德文岛格林内尔半岛的下石炭统 (Viséan) Emma Fiord 组由薄煤层 (1 m) 和油页岩组成的 51 米沉积层序具有泥灰岩和碳酸盐泥岩基质审查。所使用的技术包括用于元素浓度的反射光显微镜和仪器中子活化分析 (INAA)，以及用于硼浓度的电感耦合等离子体发射光谱法 (ICPES)。

煤和油页岩沉积在湖泊淡水环境中。由于气候变化，根据降水量的不同，油页岩分为两类。一种具有碳酸盐泥岩基质，方解石含量高 (75%)，TOC 含量低 (1.14–1.87%)。另一种是以泥灰岩为主的基质，具有高硅铝酸盐 (64%) 和 TOC (16.4–53.6%) 含量。

来自 Emma Fiord 的油页岩经历了缓慢的沉积速率和陆地通量，分别使用 Th/K/Na/K、Mn/Ca 比与 Ca 的比值确定，并与沉积在湖相环境中的石炭纪油页岩相比正常的充电/放电率。根据 Cr 和 V + Ni 的变化，Emma Fiord 油页岩的氧化还原条件表明缺氧到缺氧条件。

Thorium 和 U 系统学表明 U 更集中在具有泥灰岩基质的油页岩中，并与粘土矿物和有机质 (OM) 伴生，类似于来自大沼泽的石炭纪油页岩。自生 U 与 TOC 含量有关，并且对于具有泥灰岩基质的油页岩更高。

U 随 TOC 的变化表明古生产力和保存性，并且对于具有泥灰岩基质的油页岩更高。

由于在具有泥灰岩和碳酸盐泥岩基质的油页岩中都存在轻稀土元素 (LREE)，稀土元素 (REE) 的浓度为 95%。

REES 被标准化为后太古代平均页岩 (PAAS)。油页岩底部的高挥发性烟煤显示出平坦、无特征的图案。具有碳酸盐基质的油页岩从轻稀土元素（LREEs）到重稀土元素（HREES）略有下降。相比之下，具有泥灰岩基质的油页岩的 REE 浓度从轻稀土 (La-Eu) 到重稀土 (Tb-Lu) 的下降幅度更大。它显示出典型的上大陆地壳的弱负 Eu 异常。