气候变化领域集成服务门户(CCPortal): A new Alpine geo-lithological map (Alpine-Geo-LiM) and global carbon cycle implications

CCPortal

DOI	10.1130/B35236.1
	A new Alpine geo-lithological map (Alpine-Geo-LiM) and global carbon cycle implications
	Donnini M.; Marchesini I.; Zucchini A.
发表日期	2020
ISSN	167606
起始页码	2004
结束页码	2022
卷号	132 期号:2021-09-10
英文摘要	The 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. © 2019 Geological Society of America.
语种	英语
来源期刊	Bulletin of the Geological Society of America
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/184727
作者单位	Istituto di Ricerca per la Protezione Idrogeologica, Consiglio Nazionale delle Ricerche (CNR), Perugia, I-06128, Italy; Dipartimento di Fisica e Geologia, Università degli Studi di Perugia, Perugia, I-06123, Italy
推荐引用方式 GB/T 7714	Donnini M.,Marchesini I.,Zucchini A.. A new Alpine geo-lithological map (Alpine-Geo-LiM) and global carbon cycle implications[J],2020,132(2021-09-10).
APA	Donnini M.,Marchesini I.,&Zucchini A..(2020).A new Alpine geo-lithological map (Alpine-Geo-LiM) and global carbon cycle implications.Bulletin of the Geological Society of America,132(2021-09-10).
MLA	Donnini M.,et al."A new Alpine geo-lithological map (Alpine-Geo-LiM) and global carbon cycle implications".Bulletin of the Geological Society of America 132.2021-09-10(2020).