Precambrian/Cambrian boundary problem: Carbon isotope correlations for Vendian and Tommotian time between Siberia and Morocco

Journal Article · Thu Aug 01 00:00:00 EDT 1991 · Geology; (United States)

DOI:https://doi.org/10.1130/0091-7613(1991)019<0847:PCBPCI>2.3.CO;2· OSTI ID:5877521

Magaritz, M ^[1]; Kirschvink, J L ^[2]; Latham, A J ^[3]; Zhuravlev, A Yu; Rozanov, A Yu ^[4]

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1. Weizmann Inst. of Science, Rehovot (Israel)
2. California Inst. of Tech., Pasadena, CA (United States)
3. Univ. of Wales College of Cardiff (England)
4. Paleontological Inst., Moscow (USSR)

At least three distinctive cycles are preserved in the carbon-isotope patterns for the Vendian/Tommotian interval for the Siberian platform and the Anti-Atlas Mountains of Morocco. In Siberia, and early Tommotian carbon cycle provides the first detailed test of correlations based on archaeocyathid biostratigraphy between classic sequences on the Aldan and Lena rivers, and demonstrates that the Early Cambrian zone boundaries are reasonably good time lines. The carbon signal is preserved in both limestone and dolomite and across regional facies variations. The {delta}{sup 13}C results from the late Vendian section in Morocco display a pattern similar to that found in Siberia, suggesting that carbon isotopes can be used to test stratigraphic correlations on an intercontinental scale.

• OSTI ID: 5877521
• Journal Information: Geology; (United States), Vol. 19:8; ISSN 0091-7613
• Country of Publication: United States
• Language: English

Related Subjects

58 GEOSCIENCES
CAMBRIAN PERIOD
BOUNDARY CONDITIONS
GEOLOGIC FORMATIONS
STRATIGRAPHY
MOROCCO
PRECAMBRIAN ERA
SIBERIA
CARBON 13
CORRELATIONS
DOLOMITE
GEOLOGIC STRATA
GEOLOGY
ISOTOPE RATIO
LIMESTONE
AFRICA
ASIA
CARBON ISOTOPES
CARBONATE MINERALS
CARBONATE ROCKS
DEVELOPED COUNTRIES
DEVELOPING COUNTRIES
EUROPE
EVEN-ODD NUCLEI
GEOLOGIC AGES
GEOLOGIC STRUCTURES
ISOTOPES
LIGHT NUCLEI
MINERALS
NUCLEI
PALEOZOIC ERA
ROCKS
SEDIMENTARY ROCKS
STABLE ISOTOPES
USSR
580000* - Geosciences