Integrated stratigraphy of the Valanginian Carbon-Isotope-Excursion (Weissert event) from the Kryta Valley section, Western Carpathians (Poland): correlation with the Vocontian Basin and palaeoenvironmental implications
Jacek GrabowskiAndrzej PszczółkowskiKristalina StoykovaMargarita López‐MartínezJolanta IwańczukLeszek KrzemińskiMagdalena Sidorczuk
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Excursion
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Reflection
Glossary
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In light of the theory of modern stratigraphy,the authors analyze the standard of units from the multiple stratigaphic division.Sequence stratigraphy division is used for the Cambrian in Ruzhou area at the first time.One 1uncormity suqence surface and five 2 uncormity suqence surfaces are distinguished out in it.The Cambrian can be thought a supersequence.And depositional characteristic of different classification sequence in it is researched carefully.The relationships between the geochemical stratigraphy,the sequence stratigraphy and the tradionarl stratigraphic units are also discussed.The lithostratigraphic division units are collated and stiuplated again for the Cambrian.Finally,taking the section of Ruzhou Yangpo as an example,the authors present the application of the multiple stratigraphic division.
Sequence Stratigraphy
Sequence (biology)
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Lithostratigraphy
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The stratigraphy of Belize, north of the 17th parallel, consists of (1) a thick section of deformed and metamorphosed Carboniferous-Permian sedimentary and volcanic strata in the Maya Mountains, (2) a moderately thick section of Mesozoic strata, mostly carbonates, which are found in the subsurface and in outcrop near the Maya Mountains and along major faults, and (3) a relatively thin section of Paleocene-Pleistocene carbonates, which comprise most of the coastal plain of northern Belize. All of the stratigraphic units of Belize are informal and most lack true type sections and proper descriptions. This paper attempts to discuss and synthesize what is known of the stratigraphy of this region.
Outcrop
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Maya
Sequence Stratigraphy
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Carbon fibers
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ABSTRACT The Early Cretaceous carbonate carbon isotope stratigraphy established in pelagic limestones is marked by several pronounced excursions towards positive δ 13 C values. We investigated a biostratigraphically and palaeomagnetically calibrated Aptian section to see whether C isotope stratigraphy could be recognized in shallow‐water carbonates. The chosen carbonate platform sections are located in southern Italy and have been dated by biostratigraphy. Bulk samples, chosen from the Barremian‐Albian part of the sequence, were analysed for their O and C isotope compositions. The C isotope curve established shows two major positive excursions which can be correlated with the synchronous and globally recognized Aptian C isotope events. The data provide evidence that C isotope stratigraphy can be used as a powerful correlation tool between pelagic and shallow‐water limestone sequences.
Aptian
Carbonate platform
Chemostratigraphy
Sequence Stratigraphy
Pelagic sediment
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This chapter contains section titled: 14.1 Quaternary stratigraphy 14.2 Archeological stratigraphy 14.3 Proterozoic stratigraphy 14.4 Archean stratigraphy
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Репин Ю.С
Lithology
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Carbon fibers
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