Consiglio Nazionale delle Ricerche

Tipo di prodottoArticolo in rivista
TitoloA new Alpine geo-lithological map (Alpine-Geo-LiM) and global carbon cycle implications
Anno di pubblicazione2020
Autore/iMarco Donnini and Ivan Marchesini and Azzurra Zucchini
Affiliazioni autoriCNR IRPI, Perugia, Italy - CNR IRPI, Perugia, Italy - University of Perugia, Perugia, Italy
Autori CNR e affiliazioni
  • inglese
AbstractThe chemical composition of river waters gives a measure of the atmospheric CO2 fixed by chemical weathering processes. Since the dominating factors controlling these processes are lithology and runoff, as well as uplift and erosion, we introduce a new simplified geo-lithological map of the Alps (Alpine-Geo-LiM) that adopted a lithological classification compliant with the methods most used in literature for estimating the consumption of atmospheric CO2 by chemical weathering. The map was used together with published alkalinity data of the 33 main Alpine rivers (1) to investigate the relationship between bicarbonate concentration in the sampled waters and the lithologies of the corresponding drained basins, and (2) to quantify the atmospheric CO2 consumed by chemical weathering. The analyses confirm (as known by the literature) that carbonates are lithologies highly prone to consuming atmospheric CO2. Moreover, the analyses show that sandstone (which could have a nonnegligible carbonate component) plays an important role in consuming atmospheric CO2. Another result is that in multilithological basins containing lithologies more prone to consuming atmospheric CO2, the contribution of igneous rocks to the atmospheric CO2 consumption is negligible. Alpine-Geo-LiM has several novel features when compared with published global lithological maps. One novel feature is due to the attention paid in discriminating metamorphic rocks, which were classified according to the chemistry of protoliths. The second novel feature is that the procedure used for the definition of the map was made available on the Web to allow the replicability and reproducibility of the product.
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RivistaThe Geological Society of America bulletin (Online)
Attiva dal 1961
Editore: Geological Society of America - [Boulder, CO]
Paese di pubblicazione: Stati Uniti d'America
Lingua: inglese
ISSN: 1943-2674
Titolo chiave: The Geological Society of America bulletin (Online)
Titolo proprio: The Geological Society of America bulletin (Online)
Titolo abbreviato: Geol. Soc. Am. bull. (Online)
Titolo alternativo: GSA bulletin (Online)
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Verificato da refereeSì: Internazionale
Stato della pubblicazionePublished version
Indicizzazione (in banche dati controllate)-
Parole chiaveCarbon cycle, Alps, lithology
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Strutture CNR
  • IRPI — Istituto di ricerca per la protezione idrogeologica
Moduli/Attività/Sottoprogetti CNR-
Progetti Europei-
A new Alpine geo-lithological map (Alpine-Geo-LiM) and global carbon cycle implications (documento privato )
Tipo documento: application/pdf