Maestro Ventures Ltd. - Green Springs

Green Springs - Geology

The geology of the Green Springs property is dominated by Devonian to Mississippian sedimentary rocks exposed in two major north-south trending anticlines. The oldest unit is the Guilmette Formation, a massive light gray thick bedded limestone where definitively identified.

Above the Guilmette is the Pilot Shale, which is actually dominated by dolomitic to calcareous siltstone with minor shale. The Pilot Shale may be the most important potential gold host on the property. At its base is a 6.6- to 10-foot (2- to 3 meter) thick dark brown calcareous sandstone with some argillaceous limestone just above that. Wilson, Cox and Lance (1991) report a thickness of 174 feet (53 meters) for the Pilot on the property. In one exposure on the north side of Cathedral Canyon on the northwest side of the property, the Pilot Shale is only a few meters thick, presumably as a result of tectonic thinning.

The Joanna Limestone sits conformably above Pilot Shale. It consists of a medium-gray thick-bedded coarse limestone with common crinoids fragments. It also contains approximately 1% dark gray chert pods 5 to 15 cm thick. It forms bold outcrops and local cliffs. Much of the property is composed of essentially a dip-slope exposure of Joanna limestone with local thin scabs of jasperoid. The Joanna Limestone is reported to be 260 to 295 feet (80 to 90 meters) thick. Mapping by Zimmerman (2004) indicates the Joanna is 150 to 200 feet (46 meters to 61 meters) thick.

On top of the Joanna is the Chainman formation. The lower portion of the Chainman is less than 100 feet (30 meters) thick of thin-bedded dark gray silty to sandy argillaceous limestone. It also contains crinoids, but they are much less abundant than in the Joanna. Above this limestone unit, the Chainman consists of shale with some siliceous and calcareous sandstone and siltstone. The Chainman is not resistant and weathers to slope-forming relief with small outcrops. The Chainman is reported to be 1,480 feet (450 meters) thick in the range to the west (Carden, 1991). The uppermost Paleozoic unit on the property is the Diamond Peak Formation, 590 feet (180 meters) of sandstone and conglomerate, gradational to the underlying Chainman Formation. It is not exposed within the property boundary but was mapped by Wilson, Cox and Lance (1991), possibly from drill intercepts.

© MAESTRO VENTURES LTD. All Rights Reserved. Home \| Company \| Projects \| Investor Relations \| Press Releases \| Contact Us	Web Design by Crystal Eye Design
Maestro Ventures Ltd. is a leading gold stock investment opportunity for those looking to invest in quality gold mining stocks, or those who simply want to add the best gold stocks to their diversified portfolio.