Estimating cover thickness using seismic refraction in the southern Thomson Orogen - An UNCOVER application

James Goodwin; Tony Meixner; Sarlae McAlpine; Malcolm Nicoll

doi:10.1071/ASEG2016ab130

25th International Conference and Exhibition – Interpreting the Past, Discovering the Future

ISSN: 2202-0586
E-ISSN:

oa Estimating cover thickness using seismic refraction in the southern Thomson Orogen - An UNCOVER application
Authors James Goodwin^a, Tony Meixner^b, Sarlae McAlpine^c and Malcolm Nicoll^d
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^a Geoscience Australia, GPO Box 378 Canberra, , ACT, , 2601, [email protected] ^b Geoscience Australia, GPO Box 378 Canberra, , ACT, , 2601, [email protected] ^c Geoscience Australia, GPO Box 378 Canberra, , ACT, , 2601, [email protected] ^d Geoscience Australia, GPO Box 378 Canberra, , ACT, , 2601, [email protected]
Publisher: Australian Society of Exploration Geophysicists
Source: ASEG Extended Abstracts, Volume 2016, Issue 25th International Conference and Exhibition – Interpreting the Past, Discovering the Future, Dec 2016, p. 1 - 4
DOI: https://doi.org/10.1071/ASEG2016ab130
- Published online: 01 Dec 2016

Abstract

The Southern Thomson Project was established to develop a better understanding of the geology and mineral potential of the southern Thomson Orogen. One way in which the Southern Thomson Project is improving this understanding is through the collection of seismic refraction data at 16 greenfields sites to assess the cover thickness (i.e. the amount of regolith and sedimentary basin cover overlying the basement geology). Seismic refraction data were collected using a standard linear array with 48 geophones and a 40 kg propelled weight drop as the energy source. An estimate of the cover thickness was produced from the refraction data using the time-term inversion method. This resulted in the creation of a three-layer model for each site, which accounts for the layers associated with the regolith, sedimentary basin cover and the basement geology.

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References

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Article Type: Research Article

Keyword(s): cover thickness; seismic refraction; Southern Thomson Project; time-term inversion; UNCOVER

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