Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Inorganic Geochemistry of Crude Oils of Northern Eurasia After ICP-MS Data as a Clear Evidence for Their Deep Origin

Version 1 : Received: 23 June 2021 / Approved: 24 June 2021 / Online: 24 June 2021 (09:02:00 CEST)

How to cite: Ivanov, K.S.; Erokhin, Y.V.; Kudryavtsev, D.A. Inorganic Geochemistry of Crude Oils of Northern Eurasia After ICP-MS Data as a Clear Evidence for Their Deep Origin. Preprints 2021, 2021060596 (doi: 10.20944/preprints202106.0596.v1). Ivanov, K.S.; Erokhin, Y.V.; Kudryavtsev, D.A. Inorganic Geochemistry of Crude Oils of Northern Eurasia After ICP-MS Data as a Clear Evidence for Their Deep Origin. Preprints 2021, 2021060596 (doi: 10.20944/preprints202106.0596.v1).

Abstract

Emerging of mass-spectroscopy with inductively-coupled plasma (ICP-MS) made possible to study the microelement composition of crude oil and its derivatives (with the limit of detection at the ppt level). We have studied the crude oil composition of some West Siberian and Tatarstan oilfields with the ICP-MS method to detect 50 rare, rare-earth, and other microelements. The elemental composition is reasonably comparable to their concentrations in ultrabasites whereas the contents of most of the elements are low to the limit. On the diagrams of rare-earth elements, one can see the prevalence of light lanthanides and positive europium anomaly. The study shows that crude oils have a specific microelement composition that stands out from other geological systems.

Subject Areas

North Eurasia; crude oil; geochemistry; ICP-MS method; microelement composition; rare-earth elements

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