WOOD GROUP
ANALYSIS AND INTERPRETATION OF A MULTISENSOR AIRBORNE
SURVEY
The
WOOD GROUP represents 60 square kilometers of mineral claims. 100% owned and
operated on a 50/50 basis by
The
following information is based on results of a 1993 Airborne Geophysical Survey
carried out by the Geological Survey of Canada over the Ironmask
Batholith area of
The
multisensor airborne survey covers a large portion of the WOOD
GROUP. The data from this survey has been analyzed and interpreted for
Robert B.K. Shives,
Head Radiation Geophysics Section,
Geological Survey of
Wood Group
Property
Based on the
1993 airborne survey, more than a dozen eTh/K ratio lows appear within the Wood
Group property (Figure 2). These lows are generally coincident with 11 zones of
interest identified by the companies, and with a “MINFILE” occurrence west of
zone D (small purple triangle in Figure 2). Due to positional inaccuracies,
some of the zones may actually have a closer spatial relationship to the
airborne eTh/K lows than depicted in the figures. However, for discussion
purposes and future reference, ten airborne anomalies have been defined, and labeled 1 to 10 in Figure 3.
Previously
flown regional aeromagnetic patterns show that the two northeastern Wood Group
property corners flank the regional magnetic high associated with the Iron Mask
Batholith, located north of the property. In these areas, Zones A, B and C, and
Anomalies 2, 9 and 10 offer geophysical targets that are similar to the typical
known
The effect of
topography (Figure 4) on the magnetic total field values must also be
considered, as the effective distance from magnetic sources within the Nicola
volcanic rocks increases, to the south. Thus, magnetic features at depth may
generate less obvious airborne anomalies in the southern property areas.
A summary of the zones and the airborne
anomalies is provided in Table 1, along with a crude prioritization based on
geophysical characteristics. The priority indicated in the table is subjective,
and is based on relative intensity of the airborne eTh/K ratio low combined
with the relative intensity of associated residual magnetic total field
anomaly. While this ranking may help prioritize follow-up, it must be combined
with all available geological, geophysical, and geochemical information.
Table 1.
Summary
of Zone (a) and
Anomaly (b) characteristics, with prioritization based on airborne
signature. See explanatory note at
bottom of table.
|
(a)
Zone |
GRS |
MAG |
Zone
Description* |
Priority** |
|
A |
low eTh/K |
on SE flank of strong local high, within regional
“Ironmask” high |
MMI: Au, Co, Cu IP: N and NW trends dd:
fractures, dykes, alteration A-star is shown east of the actual zone location |
1+ |
|
B |
local eTh/K high |
directly over weak E-W linear mag
high extending from regional “Ironmask” high |
EM conductors dd:
alteration, Cu |
1 |
|
C |
mod. eTh/K |
|
VLF: N-S conductor MMI: Cu, Au (east side) |
1 |
|
D |
|
|
IP: high Soil geochem: Cu dd:
3 holes west of IP, cut native Cu |
2 |
|
E |
|
|
MaxMin:
1 strong trend parallel to Cherry Creek + 2 weaker trends |
2 |
|
F |
|
|
dd: diatreme,
volcanic breccia associated with native copper
(0.33%/0.5m assays) over 275 m downhole, 10.5 m
zone of quartz filled fractures with epidote
alteration. IP: anomalous MMI: Au, Pd, Ag |
3 |
|
G |
|
|
IP + soil geochem dd:
native Cu in several sections, epidote + silicification in intrusive margin. |
|
|
H |
|
|
Soil Cu anomalous (1100ppm) |
1 |
|
I |
|
|
Soil Cu anomalous |
3 |
|
J |
|
|
Soil Cu anomalous |
3 |
|
K |
|
|
Airborne eTh/K low |
? |
|
(b)
Anomaly |
GRS |
MAG |
Airborne
Anomaly Notes |
Priority** |
|
1 |
Deep eTh/K low |
Flanks weak high to west |
This is probable location of Zone K |
1 |
|
2 |
low eTh/K, mod. K, |
diffuse, along broad NE arch |
|
2 |
|
3 |
low eTh/K |
on N-side of elliptical high |
good combination of
GRS and flank of circular mag feature. |
1 |
|
4 |
low eTh/K |
on W-side of elliptical high |
coincidence with Zone H soil copper |
1 |
|
5 |
Deep eTh/K low |
Flanks circular high to east |
|
2 |
|
6 |
low eTh/K |
large low area |
coincident
Minfile occurrence, zones D and E near |
2 |
|
7 |
low eTh/K |
S. flank of weak E-W high |
|
3 |
|
8 |
low eTh/K |
N. flank of weak E-W high |
|
3 |
|
9 |
Deep eTh/K low |
flank mod.E-W high |
Both lie along projection SW from Afton Mine,
along Cherry Creek |
1 |
|
10 |
1 |
|||
|
* Zone descriptions derived from Summary
Report on Target Areas, by David G. Mark, dated ** All zones/targets listed may warrant
additional follow-up. The priority indicated is subjective, and is based on
relative intensity of the airborne eTh/K ratio low combined with the relative
intensity of associated residual magnetic total field anomaly. (Caution must
be exercised when using the ratio data, which may generate false anomalies in
areas where count rates are extremely low, such as over lakes or swamps.)
While this ranking may help prioritize follow-up, it must be combined with
all available geological, geophysical, and geochemical information. |
||||
Patterns resulting from a
multisensor airborne geophysical survey in the area north of the Wood Group
Property have been shown to provide direct vectoring to known,
intrusion-related, economic mineralization. Similar patterns are evident within
the Wood Group Property, suggesting potential for similar styles of
intrusion-related mineralization, in areas identified as zones A, B, C and
anomalies 9 and 10 particular.
Airborne equivalent
thorium/potassium ratio lows elsewhere on the Property have also been identified.
These lack the strong aeromagnetic signatures that typify the known Afton-style
deposits, but do have several less intense aeromagnetic features, such as
linear, circular and elliptical highs. The known presence of altered,
mineralized intrusions, pyritic zones, extensive
native copper in drill core, conductive zones, conventional and MMI soil
geochemical anomalies (including base, precious metal and palladium anomalies)
offer high potential for mineral exploration success on the Property. The airborne
anomalies may provide significant initial focus for new exploration, using the
suggested prioritization as a guide.
Local Wood Group Property Scale
Figure 1.
Wood Group property location. Heavy black square delineates location of airborne data figures, which follow.

Figure 2.
Airborne eTh/K patterns over Wood Group claims, with the company-defined zones indicated..
eThorium/Potassium

Figure 3.
Existing zones (lettered) and ten airborne anomalies
(circles labeled 1 to 10) overlain onto the eTh/K map. Note that
the close proximity of some of the zones with the airborne anomalies suggests
they may be considered as the same areas. For example, Zone H = Anomaly 4; Zone
D = Anomaly 6.
eThorium/Potassium

Figure 4.
Topography of the Wood Group claims.
Topographic Map
