Please use this identifier to cite or link to this item:
http://hdl.handle.net/2122/9945
DC Field | Value | Language |
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dc.contributor.authorall | Caracausi, A.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Palermo, Palermo, Italia | en |
dc.contributor.authorall | Paternoster, M.; Dipartimento di Scienze, Università della Basilicata, Potenza, Italy | en |
dc.date.accessioned | 2015-06-12T12:59:55Z | en |
dc.date.available | 2015-06-12T12:59:55Z | en |
dc.date.issued | 2015 | en |
dc.identifier.uri | http://hdl.handle.net/2122/9945 | en |
dc.description.abstract | Gas from mud volcanoes, dry mofettes, springs, and wells were sampled in a region of active tectonics and high seismicity in the southern Apennines (Italy), where there is a long history of disastrous earthquakes, with the latest (Ms = 6.9) occurring in 1980. The fluids consist of a mixture of mantle-derived and crust-derived volatiles, with a low atmosphere-derived contribution, as identified by the He isotope signature and He/Ne ratio measurements. One year of monthly monitoring of the He concentrations and He isotopes revealed no seasonal modifications or variations induced by low seismicity. There are extraordinary high outputs of 4He produced in the crust in the area (up to 2.5 × 1028 atoms yr 1). These outputs cannot be solely due to the whole-rock production rate and a long-lasting diffusion degassing through the crust of the produced 4He. This study explored the relation between the volume of fractured rock and the related release of He. The results support that crustal degassing can be controlled by tectonic events resulting in earthquakes. The high seismicity in this sector of the Apennines provides the conditions necessary for a massive release of He that has accumulated in the rock over a long time period. We identified that the assessed high crustal 4He output can be attributed to an intense fracturing of a calculable volume of rock, which gives new constraints on the volume of rock involved in high-magnitude earthquakes in the region. | en |
dc.language.iso | English | en |
dc.publisher.name | American Geophysical Union | en |
dc.relation.ispartof | Journal of geophysical research - solid earth | en |
dc.relation.ispartofseries | 4/120(15) | en |
dc.subject | xtraordinary high radiogenic helium flux in continental region | en |
dc.subject | Release of crustal 4He due to rock fracturing | en |
dc.subject | Relationship between rock involved in earthquake and radiogenic He flux | en |
dc.title | Radiogenic helium degassing and rock fracturing: a case study of the southern Apennines active tectonic region | en |
dc.type | article | en |
dc.description.status | Published | en |
dc.type.QualityControl | Peer-reviewed | en |
dc.description.pagenumber | 2200-2211 | en |
dc.subject.INGV | 04. Solid Earth::04.04. Geology::04.04.12. Fluid Geochemistry | en |
dc.identifier.doi | 10.1002/2014JB011462 | en |
dc.description.obiettivoSpecifico | 2T. Tettonica attiva | en |
dc.description.journalType | JCR Journal | en |
dc.description.fulltext | reserved | en |
dc.relation.issn | 0148-0227 | en |
dc.contributor.author | Caracausi, A. | en |
dc.contributor.author | Paternoster, M. | en |
dc.contributor.department | Istituto Nazionale di Geofisica e Vulcanologia, Sezione Palermo, Palermo, Italia | en |
dc.contributor.department | Dipartimento di Scienze, Università della Basilicata, Potenza, Italy | en |
item.openairetype | article | - |
item.cerifentitytype | Publications | - |
item.languageiso639-1 | en | - |
item.grantfulltext | reserved | - |
item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
item.fulltext | With Fulltext | - |
crisitem.author.dept | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Palermo, Palermo, Italia | - |
crisitem.author.dept | Università della Basilicata, Potenza, Italy | - |
crisitem.author.orcid | 0000-0003-2510-2890 | - |
crisitem.author.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
crisitem.classification.parent | 04. Solid Earth | - |
crisitem.department.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
Appears in Collections: | Article published / in press |
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File | Description | Size | Format | Existing users please Login |
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2015 Caracausi A_Paternoster M JGRB.pdf | main article | 1.02 MB | Adobe PDF |
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