uu.seUppsala University Publications
Change search
ReferencesLink to record
Permanent link

Direct link
A finite-difference modeling analysis of mode-converted scattering from massive sulfide deposits, Bathurst mining camp, Canada
Geological Survey of Canada.
Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences, Geophysics.
GNS Science.
2012 (English)Conference paper, Abstract (Refereed)
Abstract [en]

We present elastic finite-difference modeling results over a geologically realistic 2D representation of the Halfmile Lake volcanic-hosted massive sulfide deposit, New Brunswick, Canada. The model is constrained by geological information from surface mapping and boreholes whereas petrophysical properties are provided by wireline logging data acquired in two boreholes intersecting different parts of the deposit. We analyzed the P-P, P-S, S-P, and S-S responses of the Lower and Deep mineralized zones and assessed some compositional effects by substituting massive sulfides with gabbro properties in the model. Finite-difference modeling results predict complex scattering including P-P, P-S, S-P, and S-S waves generally having strongest amplitudes in the stratigraphy down-dip direction. The P-S, S-P, and S-S scattered waves if properly recorded on multi-component data, represent useful signal that could help the targeting of deep sulfide mineralization. Finite-difference simulations further reveal phase-reversals on P-P wavefields scattered at the massive sulfide zones. The phase reversals are not observed for gabbro inclusions, suggesting that this signature could be used to discriminate gabbro units from sulfide mineralization. The FD simulation successfully reproduces many events of the VSP data, in particular P-S and S-S events on the radial component and P-P and S-P events on the vertical component.

Place, publisher, year, edition, pages
2012. 1-5 p.
Series
, SEG Technical Program Expanded Abstracts, ISSN 1949-4645
National Category
Geophysics
Identifiers
URN: urn:nbn:se:uu:diva-291348DOI: 10.1190/segam2012-0069.1OAI: oai:DiVA.org:uu-291348DiVA: diva2:925320
Conference
2012 SEG Annual Meeting, 4-9 November 2012, Las Vegas, Nevada, USA
Available from: 2016-05-01 Created: 2016-05-01 Last updated: 2016-06-20Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full text

Search in DiVA

By author/editor
Malehmir, Alireza
By organisation
Geophysics
Geophysics

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 128 hits
ReferencesLink to record
Permanent link

Direct link