Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1130/B31869.1 |
Assessing mantle versus crustal sources for non-volcanic degassing along fault zones in the actively extending southern Apennines mountain belt (Italy) | |
Ascione, Alessandra1; Ciotoli, Giancarlo2,3; Bigi, Sabina4; Buscher, Jamie5,6; Mazzoli, Stefano1; Ruggiero, Livio4; Sciarra, Alessandra3; Tartarello, Maria Chiara4; Valente, Ettore1 | |
2018-09-01 | |
发表期刊 | GEOLOGICAL SOCIETY OF AMERICA BULLETIN
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ISSN | 0016-7606 |
EISSN | 1943-2674 |
出版年 | 2018 |
卷号 | 130页码:1697-1722 |
文章类型 | Article |
语种 | 英语 |
国家 | Italy; Chile |
英文摘要 | The actively extending axial zone of the southern Apennine mountain belt of Italy is characterized by a substantial flow of non-volcanic gas to the surface. In this study, we have analyzed the correlation between the active tectonic framework of the Matese Ridge area and the high gas emissions found to the southwest, which includes large amounts of CO2 (up to 99 vol %), CH4 (up to 0.55 vol %), and He (up to 52 ppmv). We measured CO2 and CH, fluxes of up to 34000 g d(-1) and 2000 g d(-1), respectively, from zones of focused degassing (gas vents and associated strong diffuse emission). This anomalously high flux of CO2 (advective plus diffusive) indicates that the study area has one of the largest non-volcanic natural emissions of CO2 ever measured on Earth. The isotope composition of C in CO2 and CH4 shows there is a dominant crustal contribution of emissions (as opposed to a source from the mantle), indicating that thermometamorphism of the buried Apulian Platform carbonates is probably the main cause of CO2 production. This process has likely been enhanced by Quaternary magmatism, which provides an additional local source of heat triggering decarbonation of Apulian Platform limestones and dolostones at depth. The advective flux is concentrated at gas vents located along active fault segments located at the western tip of a major crustal structure, the South Matese fault zone. We believe that the very high gas emission in the Matese Ridge area is the result of both the presence of a dense network of active fault strands, which provides efficient pathways for fluid flow toward the surface, and the dramatically reduced thickness of the clay-rich melange zone acting elsewhere in the southern Apennines as a top seal overlying the buried Apulian Platform carbonates. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000443133000016 |
WOS关键词 | STRESS-FIELD ; CARBON-DIOXIDE ; TECTONIC EVOLUTION ; SEISMIC SEQUENCE ; HISTORICAL EARTHQUAKES ; GEOCHEMICAL EVIDENCE ; TEMPORAL EVOLUTION ; IRPINIA EARTHQUAKE ; REGIONAL AQUIFERS ; FUMAROLIC FLUIDS |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/24636 |
专题 | 地球科学 |
作者单位 | 1.Univ Naples Federico II, Dept Earth Environm & Resources Sci DiSTAR, I-80126 Naples, Italy; 2.Natl Res Council Italy, Inst Environm Geol & Geoengn IGAG, I-00015 Rome, Italy; 3.INGV, I-00143 Rome, Italy; 4.Univ Rome Sapienza, Dept Earth Sci, I-00185 Rome, Italy; 5.Univ Chile, CEGA, Santiago 8370450, Chile; 6.Univ Chile, Dept Geol, Fac Ciencias Fis & Matemat, Santiago 8370450, Chile |
推荐引用方式 GB/T 7714 | Ascione, Alessandra,Ciotoli, Giancarlo,Bigi, Sabina,et al. Assessing mantle versus crustal sources for non-volcanic degassing along fault zones in the actively extending southern Apennines mountain belt (Italy)[J]. GEOLOGICAL SOCIETY OF AMERICA BULLETIN,2018,130:1697-1722. |
APA | Ascione, Alessandra.,Ciotoli, Giancarlo.,Bigi, Sabina.,Buscher, Jamie.,Mazzoli, Stefano.,...&Valente, Ettore.(2018).Assessing mantle versus crustal sources for non-volcanic degassing along fault zones in the actively extending southern Apennines mountain belt (Italy).GEOLOGICAL SOCIETY OF AMERICA BULLETIN,130,1697-1722. |
MLA | Ascione, Alessandra,et al."Assessing mantle versus crustal sources for non-volcanic degassing along fault zones in the actively extending southern Apennines mountain belt (Italy)".GEOLOGICAL SOCIETY OF AMERICA BULLETIN 130(2018):1697-1722. |
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