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Pregled bibliografske jedinice broj: 525531

Tufa as a Karst phenomena: environmental and palaeoclimate conditions of tufa formation


Horvatinčić, Nada
Tufa as a Karst phenomena: environmental and palaeoclimate conditions of tufa formation // Rendiconti online della Societa Geologica Italiana / Enrico Capezzuoli, Andrea Brigi, Marianna Ricci, Adle Bartini (ur.).
Rim, 2011. str. 21-21 (pozvano predavanje, nije recenziran, sažetak, znanstveni)


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Naslov
Tufa as a Karst phenomena: environmental and palaeoclimate conditions of tufa formation

Autori
Horvatinčić, Nada

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
Rendiconti online della Societa Geologica Italiana / Enrico Capezzuoli, Andrea Brigi, Marianna Ricci, Adle Bartini - Rim, 2011, 21-21

Skup
International School of travertine and tufa

Mjesto i datum
Abbadia San Salvatore, Italija, 5-9.09.2011

Vrsta sudjelovanja
Pozvano predavanje

Vrsta recenzije
Nije recenziran

Ključne riječi
tufa; Dinaric karst; isotopes; calcite precipitation; palaeoclimate
(ufa; Dinaric karst; isotopes; calcite precipitation; palaeoclimate)

Sažetak
Tufa is a product of calcium carbonate precipitation under open-air conditions from ambient temperature waters in areas of carbonate bedrock, i.e. karst areas. The carbonate is precipitated in association with a biofilm which is a by-product of the microbial metabolic activity of diatoms, bacteria and/or cyanobacteria. Tufa formation is favoured where well-developed plants exist in streams and waterfalls and this results in different morphological forms. This process is very sensitive to physico-chemical or biological changes in the water and also to seasonal fluctuation, e.g. temperature change. Physico-chemical conditions of tufa precipitation will be presented and compared with conditions of speleothem formation. Geochemistry of tufa formation involves also the isotopic exchange processes of carbon and oxygen isotopes between dissolved inorganic carbon and atmospheric CO2 and by the decisive role of biota. Assuming isotopic equilibrium during calcite precipitation then terrestrial carbonates such as tufa, speleothem or lacustrine sediment can provide a record of environmental and climatic information. Results of investigation of tufa deposits from the Dinaric Karst in terms of the conditions of formation, using physical and chemical parameters in conjunction with isotopic measurements (14C, δ13C and δ18O) will be presented. Variations of growth frequency of tufa deposits based on 14C and 230Th/234U dating demonstrate that the formation of calcite deposits was stimulated by changing climate, e.g. during interglacial periods with warm and humid conditions.

Izvorni jezik
Engleski

Znanstvena područja
Geologija



POVEZANOST RADA


Projekti:
098-0982709-2741 - Prirodni radioizotopi u istraživanju krških ekosustava i datiranju (Horvatinčić, Nada, MZOS ) ( POIROT)

Ustanove:
Institut "Ruđer Bošković", Zagreb

Profili:

Avatar Url Nada Horvatinčić (autor)

Poveznice na cjeloviti tekst rada:

Pristup cjelovitom tekstu rada

Citiraj ovu publikaciju:

Horvatinčić, Nada
Tufa as a Karst phenomena: environmental and palaeoclimate conditions of tufa formation // Rendiconti online della Societa Geologica Italiana / Enrico Capezzuoli, Andrea Brigi, Marianna Ricci, Adle Bartini (ur.).
Rim, 2011. str. 21-21 (pozvano predavanje, nije recenziran, sažetak, znanstveni)
Horvatinčić, N. (2011) Tufa as a Karst phenomena: environmental and palaeoclimate conditions of tufa formation. U: Enrico Capezzuoli, Andrea Brigi, Marianna Ricci, Adle Bartini (ur.)Rendiconti online della Societa Geologica Italiana.
@article{article, author = {Horvatin\v{c}i\'{c}, N.}, year = {2011}, pages = {21-21}, keywords = {tufa, Dinaric karst, isotopes, calcite precipitation, palaeoclimate}, title = {Tufa as a Karst phenomena: environmental and palaeoclimate conditions of tufa formation}, keyword = {tufa, Dinaric karst, isotopes, calcite precipitation, palaeoclimate}, publisherplace = {Abbadia San Salvatore, Italija} }
@article{article, author = {Horvatin\v{c}i\'{c}, N.}, year = {2011}, pages = {21-21}, keywords = {ufa, Dinaric karst, isotopes, calcite precipitation, palaeoclimate}, title = {Tufa as a Karst phenomena: environmental and palaeoclimate conditions of tufa formation}, keyword = {ufa, Dinaric karst, isotopes, calcite precipitation, palaeoclimate}, publisherplace = {Abbadia San Salvatore, Italija} }

Časopis indeksira:


  • Scopus





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