Downhole Surveying - Soil and Groundwater Information

Articles & Whitepapers

Update on the geophysical expression of the Abra sedimentary replacement Pb-Ag-Cu-Au deposit, Western Australia

Summary The Abra sedimentary replacement Pb-Ag-Cu-Au deposit is located in the Paleoproterozoic Edmund Basin, 900km NNE of Perth. Mineralisation at Abra has no surface expression and the deposit was discovered in 1981 by drill testing coincident magnetic and gravity anomaly highs. The deposit is hosted within siliciclastic and carbonate deposits of the Edmund Group and consists of a stratabound ...

Determining the design of Buried foundations case study

Foundation Mapping Determining the three-dimensional design of foundations for telecommunications towers, buildings and road signs can be impractical and sometimes nearly impossible using ...

Release of New Borehole Geophone String for S-Wave Tomography

Alternatively to the digital MBAS-D system the analog version of a borehole geophone string (MBAS-A) is available on the market. MBAS-A - Analogue Multistation Borehole Aqcuisition System The instrument can be used for S-wave borehole tomography or ...

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Borehole Geophone

The borehole geophone BGK5 is used to receive P- and S-waves in dry or water filled boreholes. The borehole geophone BGK5 consists of four horizontal sensors, separated by 45° intervals, and one vertical sensor. The geophone is coupled to the borehole wall by a pneumatic clamping system (inflatable bladder). Air is supplied to the BGK5 through an electro-pneumatic hybrid cable with a Kevlar ...