Please use this identifier to cite or link to this item: http://hdl.handle.net/2122/9836
DC FieldValueLanguage
dc.contributor.authorallEtiope, G.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italiaen
dc.contributor.authorallDrobniak, A.en
dc.contributor.authorallSchimmelmann, A.en
dc.date.accessioned2015-06-09T11:58:00Zen
dc.date.available2015-06-09T11:58:00Zen
dc.date.issued2013en
dc.identifier.urihttp://hdl.handle.net/2122/9836en
dc.description.abstractNatural hydrocarbon gas seeps are surface expressions of Petroleum Seepage Systems, whereby gas is ascending through faults from pressurized reservoirs that are typically associated with sandstones or limestones. A spectacular “eternal flame” in western New York State marks a gas macroseep of dominantly thermogenic origin emanating directly from deep shale source rocks, which makes this a rare case in contrast to most Petroleum Seepage Systems where gas derives from conventional reservoirs. The main flaming seep releases about 1 kg of methane per day and may feature the highest ethane and propane (C2 þ C3) concentration ever reported for a natural gas seep (w35 vol. %). The same gas is also released to the atmosphere through nearby invisible and diffuse seepages from the ground. The synopsis of our data with available gas-geochemical data of reservoir gases in the region and the stratigraphy of underlying shales suggests that the thermogenic gas originates from Upper Devonian shales without intermediation of a conventional reservoir. A similar investigation on a second “eternal flame” in Pennsylvania suggests that gas is migrating from a conventional sandstone pool and that the seep is probably not natural but results from an undocumented and abandoned gas or oil well. The large flux of the emitted shale gas in New York State implies the existence of a pressurized gas pool at depth. Tectonically fractured shales seem to express “naturally fracked” characteristics and may provide convenient targets for hydrocarbon exploration. Gas production from “tectonically fracked” systems might not require extensive artificial fracking.en
dc.language.isoEnglishen
dc.publisher.nameElsevier Scienceen
dc.relation.ispartofMarine and petroleum geologyen
dc.relation.ispartofseries/43 (2013)en
dc.subjectgas seep, methane, shale-gas, hydrocarbonsen
dc.titleNatural seepage of shale gas and the origin of “eternal flames” in the Northern Appalachian Basin, USAen
dc.typearticleen
dc.description.statusPublisheden
dc.type.QualityControlPeer-revieweden
dc.description.pagenumber178-186en
dc.subject.INGV03. Hydrosphere::03.04. Chemical and biological::03.04.05. Gasesen
dc.identifier.doi10.1016/j.marpetgeo.2013.02.009en
dc.description.obiettivoSpecifico7A. Geofisica di esplorazioneen
dc.description.journalTypeJCR Journalen
dc.description.fulltextrestricteden
dc.relation.issn0264-8172en
dc.relation.eissn1873-4073en
dc.contributor.authorEtiope, G.en
dc.contributor.authorDrobniak, A.en
dc.contributor.authorSchimmelmann, A.en
dc.contributor.departmentIstituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italiaen
item.openairetypearticle-
item.cerifentitytypePublications-
item.languageiso639-1en-
item.grantfulltextrestricted-
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
item.fulltextWith Fulltext-
crisitem.author.deptIstituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Roma2, Roma, Italia-
crisitem.author.orcid0000-0001-8614-4221-
crisitem.author.parentorgIstituto Nazionale di Geofisica e Vulcanologia-
crisitem.classification.parent03. Hydrosphere-
crisitem.department.parentorgIstituto Nazionale di Geofisica e Vulcanologia-
Appears in Collections:Article published / in press
Files in This Item:
File Description SizeFormat Existing users please Login
Etiope et al 2013 MPG shaleseep.pdf1.95 MBAdobe PDF
Show simple item record

WEB OF SCIENCETM
Citations

31
checked on Feb 10, 2021

Page view(s)

133
checked on Mar 27, 2024

Download(s)

25
checked on Mar 27, 2024

Google ScholarTM

Check

Altmetric