Abstract
The paper discusses new data resulting from petrographic examination of the composition and structure of Cenozoic sediments penetrated by Well 10 to a depth of 2350 m in the Upper Telekai oil-and-gas field within the Anadyr Basin. An alluvial-deltaic sedimentation environment of tuffaceous-sedimentary and terrigenous producing Lower Miocene rocks was found and their secondary alterations examined, including formation of clay minerals, carbonates, and zeolite. The vitrinite reflectance indices allowed determination of the catagenic zoning of the Miocene succession, and a significant catagenic unconformity related to pre-Pliocene erosion was recorded at its top.
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Additional information
Original Russian Text © E.E. Karnyushina, N.I. Korobova, E.V. Kozlova, N.V. Pronina, G.G. Akhmanov, 2007, published in Vestnik Moskovskogo Universiteta. Geologiya, 2007, No. 4, pp. 55–62.
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Karnyushina, E.E., Korobova, N.I., Kozlova, E.V. et al. Cenozoic complex in the Upper Telekai oil-and-gas field in the Chukchi Peninsula (results of petrographic examination of the succession penetrated by well 10). Moscow Univ. Geol. Bull. 62, 269–276 (2007). https://doi.org/10.3103/S0145875207040084
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DOI: https://doi.org/10.3103/S0145875207040084