Latest news with #geophysics
Associated Press
4 days ago
- Business
- Associated Press
Wolfden Releases Positive Deep Survey Results at Rockland in Nevada
TORONTO, ON / ACCESS Newswire / June 3, 2025 / Wolfden Resources Corporation (WLF.V) ('Wolfden"or the"Company')is pleased to release positive results from a recent deep penetrating induced polarization (IP) geophysical survey from its Rockland Gold Project located in the Walker Lane Trend of Nevada, USA. The survey was designed to test for anomalous chargeability just below historical drill results that ended in mineralization with 146.4 metres at 1.0 g/t AuEq* in hole PG-32 and hole PG-36C drilling in the opposing direction 70 metres away with 85.4 metres at 1.0 g/t AuEq* (see Figures 3 to 5). Importantly, these holes both include intervals of higher grades and alteration that increases in intensity with depth, both indicative of a potential higher grade system at depth. A 3D inversion model of the IP survey results indicates a stronger chargeability anomaly below the altered rhyolite-hosted lower grade gold mineralization closer to surface. In addition, the anomaly is coincident with a northeast-trending structural corridor that is interpreted to extend at least 1.7 km (1.1 miles) below other positive gold bearing drill hole results and altered rhyolite domes. The Company believes that the chargeability anomaly indicates an increase in disseminated pyrite from hydrothermal-alteration, which correlates well with the gold mineralization observed along the trend. Banded quartz veins and quartz-enriched zones within the pyrite-alteration of the historic drill holes have returned elevated gold values. The Company is targeting just below the historic drilling where potential boiling occurred in the hydrothermal system that could lead to increased pyrite mineralization and higher grades. The IP survey and the previous CSAMT survey have now clearly defined similar sizable corridors that warrant testing at depth. The Company plans to commence a drill program in July to test these targets. The 1,800 metre drill program is permitted and funding is available from the Company's recent US$1.5M land sale in Maine pending final approvals from the TSXV that is expected in the coming weeks. An analogous target model is AngloGold's major new Silicon-Merlin discovery located in the Beatty Mining District further to the southeast along the Walker Lane trend, which hosts Indicated-level mineral resources of 121 mT for 3.4 million ounces of gold and Inferred mineral resources of 391 mT for 12.9 million ounces of gold1. 'The Rockland East target in our opinion represents one of the most exciting drill ready exploration targets in the Walker Lane Trend as it consists of 1) potential large gold system with material as supported by gold intercepts in two opposing holes 70 metres apart, that both returned 1.0 g/t AuEq* over 85.4 metres and 146.4 metres, the latter ending in gold mineralization, 2) new deep IP results suggesting that hydrothermal fluids upwelled and ponded, creating wide, lower grade gold mineralization that could flank a pyrite-rich, higher-grade gold vein system at depth, 3) an historic high grade Au-Ag vein mine which is part of the property package further to the west of the survey area shows that high grade gold zones occur on the property and, 4) multi-square kilometre scale, argillic to advanced argillic, rhyolite and basin-margin-debris-hosted alteration zones that are cut by quartz veins enriched in antimony, arsenic and gold,' stated Don Dudek, Senior Exploration Advisor for Wolfden. 'These are the typical characteristics exhibited by some of the high quality gold deposits in the Walker Lane Trend.' As per the terms of the earn-in agreement with Evergold Corp. (EVER.V) and the underlying claim owner ('Owner'), who are both at arm's length, Wolfden must complete US$1.175 million in exploration expenditures, including a minimum of 5,000 feet (~1,500 m) of drilling in 2025, and make cash payments of up to US$600,000 over a period of three years to earn a 51% interest in the property by March 2028. The first cash payment of US$100,000 was paid in March, 2025. Upon completion of these terms, Evergold will have earned a 100% interest in the property from the Owner less a 3% NSR of which 2% can be repurchased for US$3 million and the property title will transfer from the Owner to Wolfden. At such time, Wolfden may elect to 1) continue to earn a 75% joint venture interest in the Project by funding up to the completion a Pre-feasibility Study within 5 to 8 years or 2) elect to continue as the operator of a joint venture with its initial 51% interest. In either scenario, if Evergold is ever diluted to a 20% interest or less, it will convert its interest to a 2% NSR where Wolfden can repurchase 1.5% from Evergold for C$2.25 million. Under either election, all NSR buyback rights and first rights of refusal to purchase all interests and NSR's shall apply and be held by Wolfden and or the joint venture. The earn-in agreement was announced on October 29, 2024 and is considered a fundamental acquisition for the Company, as defined in Policy 5.3, and as such is subject to certain conditions having been met under Section 5.7 of Policy 5.3, including the review by the TSX Venture Exchange of a technical report prepared in compliance with National Instrument 43-101 (Standards of Mineral Disclosure) that was submitted in May. Technical Details The IP survey was carried out in April, 2025. It was designed to penetrate to 400 metres below the surface which is well beyond the previous IP survey and below hole PG-32 that ended in gold-bearing disseminated pyrite mineralization, but still above where both the boiling zone of the hydrothermal system, where higher gold grades are interpreted to occur. This new IP survey was expanded from the previously surveyed area to investigate newly interpreted disseminated sulphide zones and provide insight into the relationship between increased chargeability and coincident CSAMT anomalies (controlled source audio magnetic telluric). The IP survey indicates that there is a 1.7 km long ridge of higher chargeability that is related to the area where historic drill holes returned gold values (Figures 2 and 3). A CSAMT, resistivity high correlates with at least 50% of the IP trend as does the IP resistivity, which also correlates with the chargeability. The resistivity highs are interpreted to be related to silicification which appears be related to gold mineralization. Figure 3, also shows proposed drill holes with one hole to test down dip of the intercept in Hole PG-32 and another hole, if warranted, to cover the rest of coincident chargeability and resistivity trends. Figures 3 to 5, also presents an intercept in hole PG-36C of 1.0 g/t AuEq over 85.4 metres. This intercept, and the one in PG-32, are 70 metres apart at their closest point, which suggests that there is a decent volume potential of ~ 1 g/t AuEq mineralization, and that may also extend further to surface. The IP survey also picked up a new, 1.2 km, northeast-trending chargeability anomaly in the northwest part of the survey area (Figure 2). Approximately 50% of the anomaly (west half) correlates with a weak resistivity high. In addition, 34 grab samples, collected down-slope of the IP anomaly, returned from 0.24 to 30.3 g/t Au and until this survey was completed, a possible source of these mineralized boulders had not been located. It is evident that that a nearby hole would have missed testing the chargeability anomaly. This target cannot not be tested in the current program as a new work permit is required. A third weaker chargeability anomaly occurs just south of the above anomaly (Figure 2). This area is one of the priority targets as it is testing a new target area along a northerly trending CSAMT anomaly, a strong interpreted structure, a structural splay feature and highly anomalous arsenic, antimony and silver, in nearby holes. The high chargeability in the northeast part of the survey grid is likely related to the combined effect of conductive sediments and the altered volcanics with the sediment response overwhelming the chargeability response of the altered rhyolites. Strongly altered rhyolites have been mapped to the 2nd line to the northeast; however metal chemistry indicates that these altered rhyolites are more distal from the core of a mineralized system than the rocks to the west of this area. QA/QC Comment All grades over drilled length were calculated from a validated drill database that includes work from several different companies. Holes 13 to 27 were completed in 1995 by a well-known international company and although there is no QA/QC documentation available, it is assumed that the work and the laboratory used would have been of good industry standards and practices. Holes 30 to 38C were drilled in 2006 and 2007 with a complete QA/QC program that included reverse circulation samples of 9 kilograms on average, collected at five-foot intervals from a wet splitter. Occasional duplicate samples were taken in the same way. Control samples including standard pulps and crushed marble blanks were inserted into the sample sequence about one every 10 samples. The samples were prepared and fire assayed for gold and multi-element analysis by ALS Chemex at their laboratory in Sparks, Nevada. All drill core was HQ in size, photographed, logged, including RQD measurements and recovery, prior to sampling. Sample intervals were typically chosen to follow actual core block/run intervals to a maximum of five feet of sample. Control samples including standard pulps and crushed marble blanks were inserted randomly in the sample number sequence to check and verify lab accuracy. The control samples were inserted at least one every tenth sample and more frequently in well mineralized zones. The grab samples were collected by at least four different exploration teams, including those that had completed the drilling. It is believed that the prospecting grab sample data noted in this release, accurately reflect the gold content of the rocks, especially since different groups returned anomalous assays from the same area and that at least one of the groups, had an active, documented drill sample QAQC program in 2006 and 2007. About Wolfden Wolfden is a North American exploration and development company focused on high-margin metallic mineral deposits including precious, base, and critical metals. It has two nickel sulphide deposits in Manitoba and one of the highest-grade polymetallic projects in the USA (Zn, Pb, Cu, Ag, Au) that represent significant development projects with the potential to produce domestic supply of strategic metals. For further information please contact Ron Little, President & CEO at (807) 624-1136. The information in this news release has been reviewed and approved by Ron Little, President and CEO, who is a Qualified Persons under National Instrument 43-101. * True widths unknown. Calculation of AuEq uses gold price of US$2000/oz and silver price of US$25/oz. The gold to silver ratio is approximately 9:1. 1 Silicon/Merlin discovery - meant only as a target comparison and not to imply that future work at Rockland will return similar results Cautionary Statement Regarding Forward-Looking Information This press release contains forward-looking information (within the meaning of applicable Canadian securities legislation) that involves various risks and uncertainties regarding future events, including the potential for projects to be domestic sources of ethically produced base and critical metals for the expansion of renewable energy in North America. Such forward-looking information includes statements based on current expectations involving a number of risks and uncertainties and such forward-looking statements are not guarantees of future performance of the Company, and include, without limitation, metal price assumptions, cash flow forecasts, permitting, land transactions, community and other regulatory approvals, and the timing and completion of exploration programs in the USA, Manitoba, New Brunswick and the respective drill results. There are numerous risks and uncertainties that could cause actual results and the Company's plans and objectives to differ materially from those expressed in the forward-looking information in this news release, including without limitation, the following risks and uncertainties: (i) risks inherent in the mining industry; (ii) regulatory and environmental risks; (iii) results of exploration activities and development of mineral properties; (iv) risks relating to the estimation of mineral resources; (v) stock market volatility and capital market fluctuations; and (vi) general market and industry conditions. Actual results and future events could differ materially from those anticipated in such information. This forward-looking information is based on estimates and opinions of management on the date hereof and is expressly qualified by this notice. Risks and uncertainties about the Company's business are more fully discussed in the Company's disclosure materials filed with the securities regulatory authorities in Canada at The Company assumes no obligation to update any forward-looking information or to update the reasons why actual results could differ from such information unless required by applicable law. Neither TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release. Figure 1. Rockland Property Location Map Figure 2. Rockland Chargeability Plan Map at a vertical depth of 200 m below surface including gold-bearing surface grab samples Figure 3. Rockland Chargeability Cross Section A-A' including hole PG-32 that stopped short of the new target Figure 4. Rockland Resistivity Cross Section A-A' including hole PG-32 Figure 5. Rockland CSAMT Survey Section A-A' including hole PG-32 SOURCE: Wolfden Resources Corp. press release
CBC
4 days ago
- Climate
- CBC
Massive ash cloud erupts from Sicily's Mount Etna in fiery volcanic show
Social Sharing Sicily's Mount Etna put on a fiery show on Monday, sending a cloud of smoke and ash several kilometres into the air. Although the eruption sent some tourists scrambling, officials said the activity posed no danger to the population. The level of alert was raised at the Catania airport due to the volcanic activity, but no immediate interruptions were reported. An official update declared the ash cloud emission had ended by the afternoon. Video and photos of the eruption show a sudden cascade of material and billowing ash running down the flank of the summit, appearing as though the volcano was splitting in half. Footage shared on social media shows tourists running along a path on the flank of the vast volcano as smoke swirled some distance in the background. Excursions are popular on Etna, which is some 3,300 metres high, with a surface area of some 1,200 square kilometres. Italy's INGV National Institute of Geophysics and Volcanology said the spectacle on Europe's most active volcano was caused when part of the southeast crater collapsed, resulting in hot lava flows and accompanying clouds of ash. The volcanic clouds reached a height of 6,500 metres at one point, according to observations recorded by the institute. It was the 14th eruptive phase in recent months. The area of danger was confined to the summit of Etna, which was closed to tourists as a precaution, according to Stefano Branca, an INGV official in Catania. The southeast crater sits about 2,800 metres above sea level. Sicily's president, Renato Schifani, said lava flows emitted in the eruption had not passed the natural containment area, "and posed no danger to the population." Dramatic fits are common at Mount Etna, which is Europe's most active volcano. The volcano drew eyes in mid-May when it shot plumes of lava and clouds of ash up into the sky, feeding two modest lava flows near its active southeast crater. Tremors from Monday's eruption were widely felt in the towns and villages on Mount Etna's flanks, Italian media reported.
Al Arabiya
4 days ago
- Climate
- Al Arabiya
Massive plume of ash, gas spews from Italy's Mount Etna
A huge plume of ash, gas and rock spewed forth Monday from Italy's Mount Etna, Europe's largest active volcano, after a portion of its southeastern crater likely collapsed, authorities said. Images showed a massive grey cloud billow forth from the volcano on the island of Sicily, beginning about 11:24 am local time (0924 GMT), according to the National Institute of Geophysics and Volcanology (INGV). Surveillance cameras showed 'a pyroclastic flow probably produced by a collapse of material from the northern flank of the Southeast Crater,' the agency said. A pyroclastic flow occurs when volcanic rock, ash and hot gasses surge from volcanos. They are extremely dangerous. The explosive activity 'had transitioned to a lava fountain,' INGV said, with the plume of ash expected to dissipate towards the southwest. A red alert issued for aviation authorities said the height of the volcanic cloud was estimated at 6.5 kilometers (more than four miles). The nearby Catania airport was still in operation.
Arab News
4 days ago
- Climate
- Arab News
Massive plume of ash, gas spews from Italy's Mount Etna
ROME: A huge plume of ash, gas and rock spewed forth Monday from Italy's Mount Etna, Europe's largest active volcano, after a portion of its southeastern crater likely collapsed, authorities said. Images showed a massive grey cloud billow forth from the volcano on the island of Sicily, beginning about 11:24 am local time (0924 GMT), according to the National Institute of Geophysics and Volcanology (INGV). Surveillance cameras showed 'a pyroclastic flow probably produced by a collapse of material from the northern flank of the Southeast Crater,' the agency said. A pyroclastic flow occurs when volcanic rock, ash and hot gasses surge from volcanos. They are extremely dangerous. The explosive activity 'had transitioned to a lava fountain,' INGV said, with the plume of ash expected to dissipate toward the southwest. A red alert issued for aviation authorities said the height of the volcanic cloud was estimated at 6.5 kilometers (more than four miles). The nearby Catania airport was still in operation.
Daily Mail
29-05-2025
- Climate
- Daily Mail
Scientists warn Italy's supervolcano is showing signs of awakening
A powerful series of earthquakes at Campi Flegrei, a massive supervolcano in Italy, has raised fresh concerns among scientists about the risk of a major eruption. In May, the Phlegraean Fields near Naples was shaken by a magnitude 4.4 earthquake, the strongest in 40 years. Over the past six months, scientists have recorded more than 3,000 smaller quakes, known as tremors, a figure far above normal seismic activity for the area. Adding to the alarm, carbon dioxide emissions from Campi Flegrei have surged, with Italy's National Institute of Geophysics and Volcanology (INGV) reporting daily levels between 4,000 and 5,000 tons. Experts say increased gas emissions often mean magma is moving closer to the surface, putting more pressure on the volcano. According to Italy's National Institute of Geophysics and Volcanology (INGV), magma is now just a few miles below the surface, a shallow depth that raises more concern. If pressure continues to build, it could trigger an eruption with little warning, especially with all the recent quakes and gas releases. Christopher R. J. Kilburn, leading volcanologist of IGNV said: 'Distinguishing between gas emissions caused by magma movement versus those resulting from natural rock interactions is absolutely critical.' Campi Flegrei poses a serious threat to over four million people living in the metropolitan area of Naples. If it erupts, the damage could be widespread. Buildings could be destroyed by lava flows, ash clouds, and fast-moving hot gases. Roads, power, and water supplies might be cut off, making life dangerous and chaotic. The city of Naples and nearby towns like Pozzuoli sit close to the Campi Flegrei, putting many lives and homes in the danger zone. A new study led by Gianmarco Buono, a PhD student at University of Naples Federico II shows that about 80 percent of the carbon dioxide released from the Solfatara crater comes directly from magma beneath the Earth's surface. This means the magma is letting out gases, which is a strong sign it might be moving closer to the surface. The other 20 percent of the gas comes from hot fluids reacting with underground rocks, a natural process that doesn't always mean an eruption is coming. Scientists watch these gas releases along with ground swelling and thousands of small earthquakes because they are key warning signs for future eruptions. When magma moves up, it pushes gases out, building pressure inside the volcano. Too much pressure can cause cracks and trigger a dangerous eruption. Campi Flegrei means 'burning fields.' It's a big volcanic crater formed when a massive eruption thousands of years ago made the ground above the magma chamber collapse. Campi Flegrei's last eruption was in 1538. While it doesn't erupt often, major eruptions happen every few thousand years, the volcano has shown signs of unrest in recent decades. Scientists say it's not possible to predict exactly when the next eruption will happen, but the recent activity means it could come sooner rather than later. Since 2005, the ground in the area has been slowly rising and falling in a process called bradyseism. This happens when magma and gas build up underground, pushing the surface up or letting it sink back down. For example, in the nearby town of Pozzuoli, the ground has risen by about 4.7 feet during the current phase. This is like the Earth's surface gently swelling like a balloon as magma pushes from below. Using a mechanical failure model, commonly applied in structural engineering, they studied how the rock beneath Campi Flegrei is responding to stress. Their findings suggest the crust is shifting from simply bending to cracking, a change that often precedes eruptions. 'We are seeing a clear progression toward a state where rupture is more likely,' the scientists noted. Since rising warning signs began in 2005, officials raised the volcano's alert level from green to yellow in 2012. Authorities have developed comprehensive evacuation plans for the millions living in the metropolitan area of Naples, but the challenge remains in ensuring these plans can be executed swiftly and effectively should an eruption become imminent. Campi Flegrei's threat is not just local. About 40,000 years ago, Campi Flegrei erupted with such force that it caused one of the worst volcanic disasters in Earth's history, triggering major changes in the global climate. If a similar eruption happened today, its impact would reach far beyond Italy. Ash clouds could blanket much of Europe, grounding flights, damaging crops, and cutting power. Volcanic gases could block sunlight, causing years of cooler temperatures and unpredictable weather that would threaten food supplies worldwide.
