The stage scale of the Cambrian System | Geological Magazine | Cambridge Core (original) (raw)

Abstract

A stage subdivision of the Cambrian System is proposed. In the lower series four stages are distinguished (the Tommotian, Atdabanian, Botomian, Tojohnian); in the middle series, two (the Amga and Maya stages); in the upper series, three (the Ayusakkanian, Sakian, and Aksayan stages). The stratotypes of the stages of the lower and middle series are located on the Siberian Platform, while the stratotypes of the stages of the upper series are found in Kazakhstan (the Maly Karatau). The lower boundary of the Cambrian is drawn along the bottom of the Al. sunnaginicus Zone, the lower boundary of the middle series along the Schistocephalus Zone, and that of the upper series along the Cormagnostus simplex Zone. The Cambrian–Ordovician boundary is not quite clear yet, but it is most likely to be drawn along the bottom of the C. proavus Zone.

References

Apollonov, M. K. & Chugayeva, M. N. 1984. Problema Granitsy Kembriya i Ordovika. In The Lower Palaeozoic Stratigraphy and Palaeontology of Kazakhstan (ed. Apollonov, M. K, Bamdaletov, S. M and Ivshin, N. K), pp. 16–25. Alma-Ata: Izdatel'stvo Nauka. (The Problem of the Cambrian–Ordovician Boundary.)Google Scholar

Apollonov, M. K., Dubinina, S. V., Ergaliev, G. H. & Chugayeva, M. N. 1984. Potentsialnij Stratotip Granitsy Kembriya i Ordovika v Malom Karatau. XXVII IGC, Abstracts, v. 1, Sections 01 to 03, 10, Moscow: Izdatel'stvo Nauka. (Potential Cambrian–Ordovician Boundary Stratotype in the Maly Karatau.)Google Scholar

Egorova, L. I., Shabanov, Yu. Ya., Pegel, T. V., Savitsky, V. E., Suchov, S. S. & Tchernysheva, N. E. 1982. Mayskij Yarus Stratotipitcheskoj Mestnosti. 148 pp. Moscow: Izdatel'stvo Nauka. (Maya Stage of the Stratotypic Location (The Middle Cambrian of the Southeastern Part of the Siberian Platform).)Google Scholar

Egorova, L. I., Shabanov, Yu. Ya., Rozanov, A. Yu., Savitski, V. Ye., Tchernysheva, N. Ye. & Shishkin, B. B. 1976. Yelanskij i Kuonamskij fatsiostratotipy nizhnej granitsy srednego kembriya Sibiri. Trudy Sibirskogo Nautchno-issledovatel'skogo Instituta Geologii, Geofiziki i Mineral'nogo syrja 211, 167 pp. Moscow: Izdatel'stvo Nedra. (Elanka and Kuhonamka faciostratotypes of the lower boundary of the Middle Cambrian in Siberia.)Google Scholar

Ergaliev, G. H. 1980. Trilobity srednego i verkhnego kembriya v Malom Karatau.(ed. Sokolov, B. S, Pokrovskaya, I. V), 208 pp. Alma-Ata: Nauka Kazakhskoj SSR. (Trilobites of the Middle and Upper Cambrian of the Maly Karatau.)Google Scholar

Ergaliev, G. H. 1984. Granitsa Kembriya i Ordovika v Yuzhnom Kazakhstane i Ulutau. In The Lower Palaeozoic Stratigraphy and Palaeontology of Kazakhstan (ed. Apollonov, M. K, Bandaletov, S. M and Ivshin, N. K), pp. 8–15. Alma-Ata: Nauka Kazakhskoj SSR. (The Cambrian–Ordovician Boundary in Southern Kazakhstan and Ulutau.)Google Scholar

Khomentovski, V. V. & Repina, L. N. 1965. Niznij kembriy stratotipitcheskogo razreza Sibiri (ed. Sokolov, B. S), 199 pp. Moscow: Izdatel'stvo Nauka. (Stratotype Section of the Lower Cambrian of Siberia.)Google Scholar

Palmer, A. R. 1979. Cambrian. In Treatise on Invertebrate Paleontology. Part A (ed. Moore, R. C, Teichert, C and Robison, R. A), pp. A119–A135. Lawrence, Kansas: Geological Society of America and University Kansas Press.Google Scholar

Pokrovskaya, N. V. 1954. Stratigrafija kembriyskick otlozhenij yuga Sibirskoj Platformy. In Voprosy Geologii Azii, Vol. 1, pp. 444–65, Izdatel'stvo Akademii Nauk SSSR. (Stratigraphy of the Cambrian Sediments of the Southern Part of the Siberian Platform.)Google Scholar

Postanovlenija Mezhvedomstvennogo Stratigrafitcheskogo Komiteta i yego postoyannykh komissij. 1983, vyp. 21, 22–31, Leningrad: Vsesoyuznyi Ordena Lenina Nautchno-issledovatel'skij Geologitcheskij Institut im. A. P. Karpinskogo (VSEGEI). (Decrees of the Interdepartment Stratigraphical Committee of the USSR.). 1973. 118 pp. Moscow – Yakutsk. (Guidebook of the Excursion of the Aldan and Lena Rivers (International Excursion on the Problem of the Precambrian–Cambrian Boundary).)Google Scholar

Repina, L. N., Khomentovski, V. V., Zhuravleva, I. T. & Rozanov, A. Yu. 1964. Biostratigrafija Nizhnego Kembriya Sayano-Altajskoj Skladtchatoj Oblasti (ed. Sokolov, B. S), 364 pp. Moscow: Izdatel'stvo Nauka. (Biostratigraphy of the Lower Cambrian in the Altai–Sayan folded region.)Google Scholar

Rozanov, A. Yu. 1973. Zakonomernosti morfologitcheskoj evolutsii arkeotsiat i voprosy yarusnogo rastchleneniya nizhnego kembriya (ed. Keller, B. M and Meyen, S. V). Trudy Geologitcheskogo instituta AN SSSR, vyp. 241, 164 pp. Moscow: Izdatel'stvo Nauka. (Regularities of the Morphological Evolution of Archeocyathids and the Issues of Stage Subdivision of the Lower Cambrian.)Google Scholar

Rozanov, A. Yu. 1984. The Precambrian–Cambrian Boundary in Siberia. Episodes. 7 (1), 20–4.Google Scholar

Rozanov, A. Yu. & Missarzhevski, V. V. 1966. Biostratigrafija i i fauna nizhnikh gorizontov kembriya (ed. Raaben, M. E). Trudy Geologitcheskogo Instituta AN SSSR, N 148, 126 pp. Moscow: Izdatel'stvo Nauka. (Biostratigraphy and fauna of the lower horizons of the Cambrian.)Google Scholar

Rozanov, A. Yu., Missarzhevski, V. V., Volkova, N. A., Voronova, L. G., Krylov, I. N., Keller, B. M., Korolyuk, I. K., Lendzion, K., Michniak, R., Pykhova, N. G. & Sidorov, A. D. 1969. Tommotskij Yarus i Problema Nizhnej Granitsy Kembrija (ed. Raaben, M. E). Trudy Geologitcheskogo Instituta AN SSSR, vyp. 206, 380 pp. Moscow: Izdatel'stvo Nauka. (The Tommotian Stage and the Cambrian Lower Boundary Problem.) (English translation edited by M. E. Raaben published 1981 for the U.S. Department of the Interior and the National Science Foundation (Washington, D.C.) by Amerind Publishing Co., New Delhi, India, 1981, 359 pp.)Google Scholar

Rozanov, A. Yu. & Sokolov, B. S. (eds) 1984. Stage Subdivision of the Lower Cambrian. Stratigraphy. Moscow: Nauka. 184 pp.Google Scholar

Spizharski, T. N., Ergaliev, G. H., Zhuravleva, I. T., Repina, L. N. Rozanov, A. Yu. 1983. Yarusnaja shkala kembroyskoj sistemy. Sovetskaya Geologiya, No. 8, 57–72 (Stage Scale of the Cambrian System).Google Scholar

Suvorova, N. P. 1954. O Lenskom yaruse nizhnego kembriaja Yakutii. Voprosy Geologii Azii 1, 466–83. Moscow: Izdatel'stvo AN SSSR. (On the Lenian Stage of the Lower Cambrian in Yakutija.)Google Scholar

Tchernysheva, N. E. 1961. Stratigrafija kembrija Aldanskoi anteklizy i paleontologitcheskoy obosnovaniye vydeleniya Amginskogo yarusa (ed. Sokolov, B. S). Trudy Vsesoyuznogo ordena Lenina Nautchnoissledovatel'skogo Geologitcheskogo Instituta im. Karpinskogo. Vol. 49, 347 pp. Leningrad: Gostoptechizdat. (Stratigraphy of the Cambrian of the Aldan Anteclise and Paleontological Grounding of Distinguishing the Amega Stage).Google Scholar

Zhuravleva, I. T., Korshunov, V. I. & Rozanov, A. Yu. 1969. Atdabanian Stage and its Grounding by Archeocyathids in the Stratotypic Section. In Biostratigraphy and Paleontology of the Lower Cambrian in Sibera and the Far East, pp. 5–60. Moscow; Izdatel'stvo Nauka.Google Scholar