Latest news with #geophysics
The Australian
6 days ago
- Business
- The Australian
Koonenberry IP survey identifies six priority drill targets along Sunnyside Shear Zone
Koonenberry's IP surveying maps >2km strike of Sunnyside Shear Zone at its Enmore project Survey identifies six priority drill targets with coincident gold and arsenic in soil anomalism Same survey technique expected to help unlock 30km of prospective zones across project Special Report: Fresh from defining bulk tonnage gold potential at the Sunnyside prospect, Koonenberry Gold has completed induced polarisation geophysics that identified six high-priority drill targets along the Sunnyside Shear Zone in NSW. The survey mapped the Sunnyside Shear Zone as a linear resistivity low within the granite, which is the preferred host rock to the extensive gold mineralisation intersected at Sunnyside. Koonenberry Gold (ASX:KNB) said the Sunnyside Shear Zone was interpreted to pinch and swell along its >2km strike length, potentially providing dilational sites for gold mineralisation where the structure opened up. The six drill targets are identified along first and second order structures, which are considered important fluid pathways for gold mineralisation, with coincident gold and arsenic in soil anomalism. Use of IP surveys in mapping first and second order structures is expected to help with exploration of the more than 30km of prospective shear zones at the broader Enmore project in northern NSW. It can also assist with ranking targets identified at the district scale. 'We have completed an electrical geophysical survey at Enmore, which has added to our understanding of the structures that are controlling mineralisation at Sunnyside,' KNB managing director Dan Power said. 'Extrapolating away from known mineralisation at Sunnyside we have identified several priority targets that are lined up along the Sunnyside Shear Zone. 'These occur within the preferred granite host rock and are supported by robust gold and arsenic anomalies in soil geochemistry. This data highlights prospectivity to the east of Sunnyside where we see the potential for extensions and repetitions to the gold mineralisation. 'A +2km long prospective zone is shown along the Sunnyside Shear Zone at the contact between the granite and sediments with coincident gold and arsenic in soils and high-grade rock chip results highlighting six priority drill targets which remain untested.' Survey analysis and forward plan KNB initially carried out the gradient array IP survey on a 400m by 400m area covering the main area of drilling at the Sunnyside prospect. It was designed to map any chargeable features from sulphides observed in the drilling and/or resistivity contrast to map changes in geology and alteration. This found the resistivity was mapping the shear structures, geology and other cross-cutting structures with a significant level of detail, leading the company to extend the survey towards the east before a separate survey was planned and completed at Hand in Hand. While dipole-dipole IP surveying was found to be unsuitable for drill targeting at Sunnyside, the results indicated that GAIP might be suitable for mapping first and second order structures which are considered important fluid pathways for gold. The company is planning +10,000m of drilling to follow-up on its successful maiden drilling at Sunnyside. This will test the continuity and extensions to mineralisation at Sunnyside as well as test the Sunnyside Shear Zone, particularly to the east where the company has identified a ~2km strike length of highly prospective granite associated with gold and arsenic soil anomalies. Wide-spaced, relatively shallow historical drilling in this area contained anomalous gold, adding further to the prospectivity of this zone. Additional soil sampling has also been conducted along the Borah Fault, a parallel fault to the Sunnyside Fault with encouraging results that will require drill testing. This article was developed in collaboration with Koonenberry Gold, a Stockhead advertiser at the time of publishing. This article does not constitute financial product advice. You should consider obtaining independent advice before making any financial decisions. Sponsored The US Centers for Medicare & Medicaid Services has approved EBR's WiSE CRT System for Medicare inpatients under new technology add-on payment. Sponsored Rumble Resources is set to unlock significant critical minerals value at its Western Queen project, with high-grade assays confirming a major tungsten system.
Arab News
17-07-2025
- Climate
- Arab News
Magnitude 5.8 earthquake hits off Indonesia's East Nusa Tenggara
JAKARTA: A magnitude 5.8 earthquake hit off Indonesia's East Nusa Tenggara province on Thursday, with a 10-kilometer (6.2-mile) depth and no tsunami potential, the country's geophysics agency said. There were no immediate reports of damage.
Al Arabiya
17-07-2025
- Climate
- Al Arabiya
Magnitude 5.8 earthquake hits off Indonesia's East Nusa Tenggara, agency says
A magnitude 5.8 earthquake hit off Indonesia's East Nusa Tenggara province on Thursday, with a 10-kilometre (6.2-mile) depth and no tsunami potential, the country's geophysics agency said. There were no immediate reports of damage. Developing
Yahoo
15-07-2025
- Science
- Yahoo
Sound of Earth's Flipping Magnetic Field Haunts Again From 780,000 Years Ago
In 2024, researchers transformed readings of an epic upheaval of Earth's magnetic field flipping 41,000 years ago into an eerie, auditory experience. Now a team containing some of those same scientists has sonified an even earlier flip, from epochs ago. The resulting cacophony is an unnerving translation of geological data on the Matuyama-Brunhes reversal, a switching of the planet's magnetic poles that took place roughly 780,000 years ago. Geophysicists Sanja Panovska and Ahmed Nasser Mahgoub from the Helmholtz Centre for Geosciences (GFZ) created a global model of Earth's magnetic field during the event, based on ancient magnetic data in sediments from drill cores around the world. This data was then visualized by Maximilian Arthus Schanner and sonified by Klaus Nielsen and Schanner. Related: Earth's magnetic field is generated by the roiling liquid metals deep beneath the crust. Extending tens to hundreds of kilometers into space, the field deflects atmosphere-stripping particles, keeping us all safe below. The bombardment of solar radiation that leaks through during reversals raises levels of beryllium-10 in Earth's atmosphere, which in turn can be preserved in ice core samples. Measuring fluctuations in these isotopes then serves as a handy measure of the field's weakening. The data shows that when Earth's magnetic poles get restless, they don't just cleanly trade places, but stagger about in slow motion, splitting into blobs and drunkenly merging. The resulting random bubbling of numerous magnetic polarities across the planet is aptly visualized in the animation. Our early human ancestors, such as Homo erectus, lived through this event, which was thought to last up to 22,000 years (although this estimate is still debated). It's likely there were some kinds of consequences to our ancient relatives and other life on Earth at the time, since the magnetosphere protects us from cosmic and solar radiation. Other magnetic field wanderings have been linked to dramatic changes in climate. But the exact consequences from almost 800,000 years ago remain unclear, as anthropological records around this time are sparse. Boldly etched into the flow of solidifying lava across Earth, the Matuyama-Brunhes event is used by geologists as a marker of the beginning of the Middle Pleistocene. In sound form, it's a haunting song that set the stage for the emergence of modern humans. Extreme Conditions of Early Universe Recreated in Collider Experiment Dark Matter Search Could Lead Us to a New Kind of Star 3D Time Could Solve Physics' Biggest Problem, Says Bizarre New Study
RNZ News
14-07-2025
- Climate
- RNZ News
Magnitude 6.7 earthquake strikes Indonesia
File photo Photo: An earthquake of magnitude 6.7 has struck off the coast of Indonesia's Tanimbar Islands region, but there are no tsunami warnings. The quake hit at a depth of 98 km, the country's geophysics agency said. The German Research Centre for Geosciences (GFZ) reported that the quake was of 6.8 magnitude and at a depth of 10 km. Tremors were felt in several small towns in eastern Indonesia, the agency said. There was no immediate reports of damage, said Indonesia's disaster mitigation agency. Indonesia straddles the so-called Pacific Ring of Fire, a highly seismically active zone which includes New Zealand, where different plates on the Earth's crust meet and create a large number of earthquakes and volcanic activity. - Reuters
