STABLE ISOTOPIC CALIBRATION OF THE EARLIEST SKELETAL FOSSIL ASSEMBLAGES IN EASTERN SIBERIA (PRECAMBRIAN-CAMBRIAN BOUNDARY)

被引：63

作者：

BRASIER, MD

KHOMENTOVSKY, VV

CORFIELD, RM

机构：

[1] Department of Earth Sciences, University of Oxford, Oxford, OX1 3PR, Parks Road

[2] Geological Institute, Siberian Branch of the Academy of Sciences, Novosibirsk

来源：

TERRA NOVA | 1993年 / 5卷 / 03期

关键词：

D O I：

10.1111/j.1365-3121.1993.tb00253.x

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

Sections from the eastern margin of the Siberian Platform provide important reference sections for stable isotopic correlation of the newly defined Precambrian-Cambrian boundary level since they contain some of the earliest pre-Tommotian shelly fossil assemblages known, and are amenable to deltaC-13 stratigraphy. Stable isotopes are examined from the Dvortsy and Ulakhan-Sulugur sections (River Aldan), where sparse pre-Tommotian assemblages occur, and from the Uchur River region, where the putative Anabarites trisulcatus and Purella antiqua Zones of the Nemakit-Daldynian Stage are well-developed. Diagenetic resetting of delta-O-18 and deltaC-13 must be taken into account when comparing such sections. Simple corrections allow for stable isotopic correlation of basal Nemakit-Daldynian and Tommotian strata across eastern Siberia.

引用

页码：225 / 232

页数：8

共 33 条

[11] Fedonkin M.A., Paleoichnology of the Precambrian‐Cambrian transition in the Russian Platform and Siberia, Bull. N. Y. State Mus., 463, (1989)
[12] Hudson J.D., Anderson T.F., Ocean temperatures and isotopic compositions through time, Trans. R. Soc. Edinb. Earth Sci., 80, pp. 183-192, (1989)
[13] Khomentovsky V.V., Vendian, Trudy Inst. Geol. Geofis. Sib. otdel. AN SSSR. Mem., 243, (1976)
[14] Khomentovsky V.V., The Vendian System of Sibera and a standard stratigraphic scale, Geol. Mag., 123, pp. 333-348, (1986)
[15] Khomentovsky V.V., Karlova G.A., New information on the correlation of Vendian—Cambrian deposits in eastern and transitional fades regions of southern Yakutia, Late Precambrian and Early Paleozoic of Siberia, pp. 3-44, (1991)
[16] Khomentovsky V.V., Val'kov A.K., Karlova G.A., New information on the bio‐stratigraphy of transitional Vendian—Cambrian deposits in the central basin of the Aldan River, Late Precambrian and Early Paleozoic of Siberia, pp. 3-57, (1990)
[17] Kirshvink J.L., Magaritz M., Ripperdan R.L., Rozanov A.Yu., The Precambrian‐Cambrian boundary
[18] magnetostratigraphy and carbon isotopes resolve correlation problems between Siberia, Morocco and South China, GSA Today, 1, pp. 69-71, (1991)
[19] Landing E., Benus P., Myrow P., Narbonne G.M., The Placentian Series: appearance of the oldest skeletalized faunas in southeastern Newfoundland, J. Paleont., 63, pp. 739-769, (1989)
[20] Latham A., Riding R., Fossil evidence for the location of the Precambrian/Cambrian boundary in Morocco, Nature, 344, pp. 752-754, (1990)

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