Opawica Uses Advanced 2D Seismic Techniques to Identify Buried Gold Targets
Suite 488- 625 Howe Street, Vancouver, BC Canada V6C 2T6
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Opawica Uses Advanced 2D Seismic Techniques to Identify Buried Gold Targets
Vancouver, B.C. – November 17 th, 2022 - Opawica Explorations Inc. (TSXV: OPW) (FSE:
A2PEAD) (OTC: OPWEF) (the “Company” or “Opawica”) is pleased to announce it has received
the 2D Seismic data from the Arrowhead Property in the Rouyn Noranda camp of the Abitibi in
Quebec.
A two dimensional (2D) seismic survey is an exploration method used to create a map of the
structures beneath Earth’s surface by sending energy waves into the Earth. Different rock
formations reflect the waves back to the surface where they are recorded over a period of time
and then converted into a seismic image. The objective of the 2D seismic survey is to define
bedding domains to assist in selecting target definition drill holes to test various geologic domains
under the cover rock. The depth of cover at Arrowhead is estimated at ~100m and it is important
to image stratigraphy to a depth of ~500 to 700m. See Figure 1 for the location of the survey,
Figure 2 shows an identified anticline feature in the middle of the seismic line as indicated on the
land streamer section. Figure 3 displays the results of the tomographic inversion of the first breaks
(refraction technique) using the fixed receiver shot records. The correspondence with the anticline
in the middle of the line and a number of high velocity areas may be indicative of mineralization
which would have higher velocities than the host rocks. These anomalies do correspond
somewhat with the anomalies highlighted on the land streamer data in Figure 2.
The downhole sonic logs were helpful in understanding the depths of the seismic reflectors
observed. The sonic logs indicate rock velocities are in the range of 5,200- 6,200m/s, which
correlates to seismic reflectors are ~1km deep.
Blake Morgan, C hief Executive Officer of Opawica stated, “The 2D Seismic survey has been
extremely useful on the Arrowhead Property in identifying buried targets. 2D Seismic is a cost -
effective use of active seismic reflection profiling in mineral exploration. We now know what to do
next and that is drill deeper. Our modelling has shown a direct resemblance to Agnico Eagles La
Rhonde mine right next door. The large -scale gold mine is now down to around 3kms in depth.
Shafts were initially started around the 500m level and that is what we are now seeing on Opawica
Arrowhead project with the seismic data. The Opawica team will now define high priority drill
targets and move towards a phase two drill program that will test the system at depth.”
The 2D Survey was a high-resolution reflection 2D line with 271 wireless receivers spaced at 12m
and a single 15,000lb Envirovibe energy source to obtain high frequency data. Survey positioning
was obtained real-time within the Vibrosies unit using very high-resolution GPS positioning (15cm
lateral and 50cm vertical). The fixed receiver spread consisted of 271 X 3- component channels
with max offset of 1,524m to ensure capture of the steeply dipping faults to be imaged even at
shallow (less than 500m) depths. With this approach image faults and steeply dipping events from
depth right to surface. The high- resolution shallow seismic spacing of 12m (20ft) and Energy
source at 6m (20ft) enables 40-fold data capable of resolving layers and faults down to as little as
8m (25ft.) in thickness. Frequencies obtained with an accelerated weight drop are typically 60-70
Hz peak frequency and these frequencies cannot be tuned. By using an Envirovibe it was possible
to “tune” the sweeps for these machines to increase high frequency content, sometimes as high
as 180 HZ in shallow geologic sections which enables the vertical resolution of thinner layers as
per the diagram below.
- 2 -
Figure 1 Location of 2D Seismic in the Arrowhead Property
- 3 -
Figure 2 Anticline feature in the middle of the seismic line
Figure 3 Tomographic Inversion
Echo Geotech provides subsurface profiles acquired using their no surface Land Streamer
equipment, and processes and interpreted using state-of-the-art seismic technology with reveals
much more about the complexity of the subsurface. Echo Geotech will process and interpret data,
thus providing Opawica with images and data that are decision ready. The multi-component land
streamer system design allows Echo Geotechnical to simultaneously employ multiple techniques
to extract subsurface physical properties.
Derrick Strickland, P. Geo (OGQ No. 35402), is the qualified person for Opawica Explorations,
and has reviewed and approved the technical content of this news release.
- 4 -
About Opawica Explorations Inc.
Opawica Explorations Inc. is a junior Canadian exploration company with a strong portfolio of
precious and base metal properties within the Rouyn- Noranda region of the Abitibi Gold Belt in
Québec and in Central Newfoundland and Labrador. The Company’s management has a great
track record in discovering and developing successful exploration projects. The Company’s
objective is to increase shareholder value through the development of exploration properties using
cost effective exploration practices, acquiring further exploration properties, and seeking
partnerships by either joint venture or sale with industry leaders.
FOR FURTHER INFORMATION CONTACT:
Blake Morgan
President and Chief Executive Officer
Opawica Explorations Inc.
Telephone: 604-681-3170
Fax: 604-681-3552
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the policies of the TSX Venture Exchange) accepts responsibility for the adequacy of accuracy of
this news release.
Forward-Looking Statements
This news release contains certain forward -looking statements, which relate to future events or
future performance and reflect management’s current expectations an d assumptions. Such
forward-looking statements reflect management’s current beliefs and are based on assumptions
made by and information currently available to the Company. Readers are cautioned that these
forward-looking statements are neither promises nor guarantees, and are subject to risks and
uncertainties that may cause future results to differ materially from those expected including, but
not limited to, market conditions, availability of financing, actual results of the Company’s
exploration and ot her activities, environmental risks, future metal prices, operating risks,
accidents, labor issues, delays in obtaining governmental approvals and permits, and other risks
in the mining industry. All the forward-looking statements made in this news release are qualified
by these cautionary statements and those in our continuous disclosure filings available on SEDAR
at www.sedar.com. These forward -looking statements are made as of the date hereof and the
Company does not assume any obligation to update or revise them to reflect new events or
circumstances save as required by applicable law.