Porphyritic
Visible crystals occur within a finer-grained groundmass.
THOR IN 3D · DEEP MAGMATIC ARCHITECTURE
I-1 Intrusive.A buried body at
the roots of Thor.
A deep, resistive body beneath Thor is interpreted from magnetotellurics and clues preserved in lamprophyre-hosted rock fragments. Its possible connection to the epithermal system is a central exploration hypothesis.
- Surface exposure
- None known
- Primary mapping
- MT resistivity
- Upper model
- ~500 mASL
- Direct drill test
- Future target
01 · SYSTEM VIEW
A deep body beside the Silver Cup Anticline.
The modeled I-1 feature sits beneath the known Thor system and approaches the Silver Cup Anticline. A string of EM responses occupies the corridor between the intrusive interpretation and the epithermal deposit.
Integrated geological model
I-1 within the district architecture.
The dark-green I-1 volume is shown below the epithermal trend and beside the Silver Cup Anticline. The circled EM-anomaly corridor is one line of evidence used to evaluate a possible connection to Thor.
02 · ROCK EVIDENCE
Fragments carried upward by a younger dyke.
Some Thor lamprophyre contains porphyritic fragments aligned within its magnesium-rich matrix. Taranis interprets these fragments as possible samples of the otherwise buried I-1 body.
Gary’s Corner
Aligned fragments.
Pale fragments sit within darker lamprophyre and are oriented broadly parallel to the dyke margins.
Centimetre scale
Porphyritic texture.
The interpreted xenolith contains abundant pale feldspar phenocrysts, reported as albite, together with quartz eyes.
Feldspar-rich
Numerous pale phenocrysts are interpreted as albite.
Quartz-bearing
Rounded quartz eyes are reported in some fragments.
Calc-alkaline
The working interpretation is a porphyritic dioritic composition.
03 · RELATIVE TIMING
The fragment relationship establishes a sequence.
If the fragments came from I-1, their enclosure inside lamprophyre makes the source rock older than the dyke. Linking that older intrusive to epithermal mineralization remains an interpretation to be tested.
I-1 crystallizes
A porphyritic intrusive body forms at depth and develops the feldspar- and quartz-bearing texture now inferred from fragments.
Thor system evolves
Epithermal mineralization and associated alteration develop above the deeper magmatic architecture; their exact relationship to I-1 remains under evaluation.
Lamprophyre crosscuts
A younger dyke cuts the older intrusive, entrains fragments and transports them upward into the preserved Thor rock record.
What the sample demonstrates: fragments predate their host dyke. What it does not independently prove: that the fragments came from the modeled I-1 volume or that I-1 supplied the Thor mineralizing fluids.
04 · MAPPING THE BODY
A resistive volume resolved through MT.
I-1 is not exposed anywhere at Thor. Its location and form are inferred principally from magnetotelluric resistivity, supported by the xenolith interpretation and the spatial pattern of EM anomalies.
Resistivity interpretation
A circular body continuing to depth.
The modeled I-1 volume begins near an elevation of approximately 500 mASL and extends below the resolved model.
TARGET RATIONALE
Three datasets converge.
The I-1 concept gains relevance where independent evidence aligns spatially, but the body requires direct drill testing.
- 01MT geometry
A deep, broadly circular resistive feature is interpreted beneath Thor.
- 02Transported fragments
Porphyritic xenoliths may provide a physical sample of the buried source rock.
- 03EM corridor
Conductive responses trend between I-1, the Silver Cup Anticline and the epithermal system.
A possible deep source for Thor.
The northeast side of the interpreted I-1 body approaches the Silver Cup Anticline near EM responses that project toward the epithermal deposit. This geometry motivates the hypothesis that I-1 may be related to the deeper mineralizing system and supports future drill evaluation from the main access-road area.