Diffractivity - Another attribute for the interpretation of seismic data in hard rock environment, a case study
The primary objective of seismic exploration in a hard rock environment is the detection of heterogeneities such as fracture zones, small-scale geobodies, intrusions, and steeply dipping structures that are often associated with mineral deposits. Prospecting in such environments using seismic-reflec...
Published in: | Interpretation |
---|---|
Main Authors: | , , , , |
Format: | Article in Journal/Newspaper |
Language: | unknown |
Published: |
SOC EXPLORATION GEOPHYSICISTS
2016
|
Subjects: | |
Online Access: | https://hdl.handle.net/20.500.11937/35324 https://doi.org/10.1190/INT-2016-0023.1 |
id |
ftcurtin:oai:espace.curtin.edu.au:20.500.11937/35324 |
---|---|
record_format |
openpolar |
spelling |
ftcurtin:oai:espace.curtin.edu.au:20.500.11937/35324 2023-06-11T04:15:19+02:00 Diffractivity - Another attribute for the interpretation of seismic data in hard rock environment, a case study Khoshnavaz, M Javad Bóna, Andrej Hossain, Muhammad Urosevic, Milovan Chambers, K. 2016 restricted https://hdl.handle.net/20.500.11937/35324 https://doi.org/10.1190/INT-2016-0023.1 unknown SOC EXPLORATION GEOPHYSICISTS http://hdl.handle.net/20.500.11937/35324 doi:10.1190/INT-2016-0023.1 Journal Article 2016 ftcurtin https://doi.org/20.500.11937/3532410.1190/INT-2016-0023.1 2023-05-30T19:38:40Z The primary objective of seismic exploration in a hard rock environment is the detection of heterogeneities such as fracture zones, small-scale geobodies, intrusions, and steeply dipping structures that are often associated with mineral deposits. Prospecting in such environments using seismic-reflection methods is more challenging than in sedimentary settings due to lack of continuous reflector beds and predominance of steeply dipping hard rock formations. The heterogeneities and fractal aspect of hard rock geologic environment produce considerable scattering of the seismic energy in the form of diffracted waves. These scatterers can be traced back to irregular and often sharp-shaped mineral bodies, magmatic intrusions, faults, and complex and heterogeneous shear zones. Due to the natural lack of reflectors and abundant number of diffractors, there are only a few case studies of diffraction imaging in hard rock environments. There are almost no theoretical models or field examples of diffraction imaging in prestack domain. We have filled this gap by applying a 3D prestack diffraction imaging method to image point diffractors. We calculated the diffractivity by computing the semblance of seismic data along diffraction traveltime curves in the prestack domain. The performance of the method is evaluated on a synthetic case and a field seismic data set collected over the Kevitsa mineral deposit in northern Finland. The high-resolution results obtained by the application of prestack diffraction imaging suggest that diffractivity is a robust attribute that can be used in addition to other seismic attributes for the interpretation of seismic data in hard rock environment. Article in Journal/Newspaper Northern Finland Curtin University: espace Image Point ENVELOPE(-132.002,-132.002,53.245,53.245) Interpretation 4 4 B23 B32 |
institution |
Open Polar |
collection |
Curtin University: espace |
op_collection_id |
ftcurtin |
language |
unknown |
description |
The primary objective of seismic exploration in a hard rock environment is the detection of heterogeneities such as fracture zones, small-scale geobodies, intrusions, and steeply dipping structures that are often associated with mineral deposits. Prospecting in such environments using seismic-reflection methods is more challenging than in sedimentary settings due to lack of continuous reflector beds and predominance of steeply dipping hard rock formations. The heterogeneities and fractal aspect of hard rock geologic environment produce considerable scattering of the seismic energy in the form of diffracted waves. These scatterers can be traced back to irregular and often sharp-shaped mineral bodies, magmatic intrusions, faults, and complex and heterogeneous shear zones. Due to the natural lack of reflectors and abundant number of diffractors, there are only a few case studies of diffraction imaging in hard rock environments. There are almost no theoretical models or field examples of diffraction imaging in prestack domain. We have filled this gap by applying a 3D prestack diffraction imaging method to image point diffractors. We calculated the diffractivity by computing the semblance of seismic data along diffraction traveltime curves in the prestack domain. The performance of the method is evaluated on a synthetic case and a field seismic data set collected over the Kevitsa mineral deposit in northern Finland. The high-resolution results obtained by the application of prestack diffraction imaging suggest that diffractivity is a robust attribute that can be used in addition to other seismic attributes for the interpretation of seismic data in hard rock environment. |
format |
Article in Journal/Newspaper |
author |
Khoshnavaz, M Javad Bóna, Andrej Hossain, Muhammad Urosevic, Milovan Chambers, K. |
spellingShingle |
Khoshnavaz, M Javad Bóna, Andrej Hossain, Muhammad Urosevic, Milovan Chambers, K. Diffractivity - Another attribute for the interpretation of seismic data in hard rock environment, a case study |
author_facet |
Khoshnavaz, M Javad Bóna, Andrej Hossain, Muhammad Urosevic, Milovan Chambers, K. |
author_sort |
Khoshnavaz, M Javad |
title |
Diffractivity - Another attribute for the interpretation of seismic data in hard rock environment, a case study |
title_short |
Diffractivity - Another attribute for the interpretation of seismic data in hard rock environment, a case study |
title_full |
Diffractivity - Another attribute for the interpretation of seismic data in hard rock environment, a case study |
title_fullStr |
Diffractivity - Another attribute for the interpretation of seismic data in hard rock environment, a case study |
title_full_unstemmed |
Diffractivity - Another attribute for the interpretation of seismic data in hard rock environment, a case study |
title_sort |
diffractivity - another attribute for the interpretation of seismic data in hard rock environment, a case study |
publisher |
SOC EXPLORATION GEOPHYSICISTS |
publishDate |
2016 |
url |
https://hdl.handle.net/20.500.11937/35324 https://doi.org/10.1190/INT-2016-0023.1 |
long_lat |
ENVELOPE(-132.002,-132.002,53.245,53.245) |
geographic |
Image Point |
geographic_facet |
Image Point |
genre |
Northern Finland |
genre_facet |
Northern Finland |
op_relation |
http://hdl.handle.net/20.500.11937/35324 doi:10.1190/INT-2016-0023.1 |
op_doi |
https://doi.org/20.500.11937/3532410.1190/INT-2016-0023.1 |
container_title |
Interpretation |
container_volume |
4 |
container_issue |
4 |
container_start_page |
B23 |
op_container_end_page |
B32 |
_version_ |
1768372044111544320 |