3th International Congress of Speleology 4th Speleological Congress of Latin América and Caribbean 26th Brazilian Congress of Speleology Brasília DF, 15-22 de julho de 2001 Luminescent Growth Banding and Stable Isotope Stratigraphy in a Stalagmite from No
Abstract Luminescent organic matter in a stalagmite from northern Norway is found to display characteristic patterns of annual and sub-annual bands for the period AD 1734 to 955 BC. The stable isotope stratigraphy, with a temporal resolution of 10 to 30 years/mm, shows large-scale fluctuations with...
| Main Authors: | , , , , |
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| Format: | Text |
| Language: | English |
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| Online Access: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.1040.9042 http://www.cavernas.org.br/anais26cbe/26CBE_057-060.pdf |
| Summary: | Abstract Luminescent organic matter in a stalagmite from northern Norway is found to display characteristic patterns of annual and sub-annual bands for the period AD 1734 to 955 BC. The stable isotope stratigraphy, with a temporal resolution of 10 to 30 years/mm, shows large-scale fluctuations with time similar to the variation in annual band width. Preliminary results suggest that, in one annual layer, the main luminescent lamina is deposited in the spring in relation to flushing of organic matter from the soil zone during snowmelt, and that minor laminae (of lower intensity and thickness) are formed during the autumn. Moreover, this indicates a strong relation between summer soil zone conditions and stalagmite growth rate, thus information from studies of annual bands are expected to improve the understanding of stable isotopes in high latitude speleothems. |
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