Territory Stories

Renison Goldfields Consolidated Limited, Pine Creek Project. Groundwater Investigation Stage 2, Establishment of Borefield and Management Studies. Report H114/3-AA.

Details:

Title

Renison Goldfields Consolidated Limited, Pine Creek Project. Groundwater Investigation Stage 2, Establishment of Borefield and Management Studies. Report H114/3-AA.

Creator

Coffey & Partners Pty Ltd

Collection

E-Publications; E-Books; PublicationNT; Report no. 87/1984

Date

1983-11-01

Notes

Date:1983-11

Language

English

Publisher name

Northern Territory Government

Place of publication

Darwin

Series

Report no. 87/1984

File type

application/pdf

Use

Attribution International 4.0 (CC BY 4.0)

Copyright owner

Northern Territory Government

License

https://creativecommons.org/licenses/by/4.0/

Parent handle

https://hdl.handle.net/10070/228435

Citation address

https://hdl.handle.net/10070/674167

Page content

Technical Report WRD84087 Viewed at 14:07:14 on 29/07/2010 Page 107 of 167. I I I I I 9. All soundings are readily matched by 3 layer models comprising an upper resistive layer 0verlying an intermediate low resistivity layer above a highly resistive basal layer. These results confirm the general interpretation reported by Furness 1983 (Table 1) with the exception of higher surface layer resistivities due to extreme dryness. The greatest thickness of geoelectric layer 2 and the lowest bedrock resistivity is indicated by VES 5. This sounding was located by intprpretation of a type I anomaly on Traverse 7. VES 3 is the only other sounding located by a type I anomaly and also indicates a relatively low bedrock resis tivity. now0 ver, only half the thickness of layer 2 is implied. Of the soundings carried out in Area lover type II anomalies, VES 2 indicates a substantially lower bedrock resistivity. Th's site is conSidered to offer higher ground"' water potential than the site of VES 1 although laye:t2,:::: Rpppars thinner at VES 2. ('-.co. ~ In Area 2, VES 6 was sited over borehole ~7. ~!odel rpsu1 ts impJ.y resistive bedrock wi th only mOd~e dev """<::1' ~ "'" ~ t:>-d ~"'l"l p]opmE'nt of tilp intermediate weathered layer. 4 CONCLUSIONS AND RECOMMI 'iDATIO:,S Pole-dipole profiling in three areas~cent to Pine Creek has defined several zones of low appa~ resist ivity. These anomalies are thought to imply either a thicken log of the weathered bedrock layer or a lowering of the bed rock resistivity (possibly due to fracturing), and as a consequence the anomalous zones have higher groundwater pot enti a 1. The anomalies have bE'en divided into two groups, type I and type II, nn the basis of anomaly magnitude and extent. These results are summarised in Table 2. Type I anom alies are considered primary groundwater exploration targets. Of the three regions investigated, Areas 2 and 3 are considered the most prospective, each with three type I