Abstract

Comparative studies were made of the microelement composition of rock samples from Domanik deposits of different lithologo-facial types: from Semiluki–Mendym (Domanik) deposits of the Berezovskaya area and from carbonate domanikoid deposits of the Dankovo–Lebedyan horizon of the Zelenogorskaya area of the Romashkino oilfield. These samples differ in the organic matter (OM) content and in the content and composition of petroleum hydrocarbons (HCs) and kerogen. Distinctive features of the composition and distribution of biogenic, rare earth, and radioactive microelements (MEs) in the initial rocks, rock extracts, and asphaltenes recovered from them were revealed. The Domanik carbonate–silica rock of the Berezovskaya area, in contrast to the carbonate rock of the Zelenogorskaya area, is characterized by diversity and high concentrations of all the ME groups with the highest content of V, Ti, Fe, Zn, Ni, Cu, Cr, Ba, Mo, and Mn. In the carbonate rock from domanikoid deposits of the Zelenogorskaya area, the concentration of these MEs is considerably lower, as well as the concentrations of rare earth and radioactive elements; the group of highly volatile chalcophilic MEs including Ge, Ga, As, Se, Cd, Sb, Te, Re, Hg, Tl, and Bi is virtually absent. Both types of rocks contain Sr. In the extracts and asphaltenes, V, Ni, Fe, and Zn are the most abundant MEs. The highest concentrations of V, Ni, and Zn were detected in carbenes and carboids of the Berezovskaya area. The ME composition suggests different conditions of the OM transformation and ME accumulation in rocks from Domanik deposits of different lithologo-facial types due to different intensity of the development of tectonic processes and supply of deep hydrothermal fluids into the deposit strata on the examined territory of the Romashkino oilfield.

中文翻译：

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Romashkino油田不同岩相类型Domanik矿床岩石、提取物和沥青质中微量元素的组成和分布

摘要

对来自不同岩相-相类型的 Domanik 矿床的岩石样品的微量元素组成进行了比较研究：来自别列佐夫地区的 Semiluki-Mendym (Domanik) 矿床和来自该地区 Zelenogorskaya 地区的 Dankovo-Lebedyan 层位的碳酸盐 domanikoid 矿床。罗马什基诺油田。这些样品的不同之处在于有机物 (OM) 含量以及石油烃 (HC) 和干酪根的含量和组成。揭示了原始岩石、岩石提取物和从中回收的沥青质中生物、稀土和放射性微量元素 (ME) 的组成和分布的独特特征。Berezovskaya 地区的 Domanik 碳酸盐-二氧化硅岩，与 Zelenogorskaya 地区的碳酸盐岩形成对比，其特点是所有 ME 基团的多样性和高浓度，其中 V、Ti、Fe、Zn、Ni、Cu、Cr、Ba、Mo 和 Mn 的含量最高。在来自 Zelenogorskaya 地区多马尼科沉积物的碳酸盐岩中，这些 ME 的浓度以及稀土和放射性元素的浓度要低得多；包括 Ge、Ga、As、Se、Cd、Sb、Te、Re、Hg、Tl 和 Bi 在内的高挥发性亲硫金属元素组实际上不存在。两种类型的岩石都含有 Sr。在提取物和沥青质中，V、Ni、Fe 和 Zn 是最丰富的 ME。在别列佐夫地区的卡宾和碳化物中检测到最高浓度的 V、Ni 和 Zn。