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Hidden Copper Clues: Multi-stage fluid history at Nifty revealed by apatite and monazite chronology

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  • Two major copper-bearing fluid events identified: ca. 810 Ma and ca. 640 Ma, revealing a complex, multi-phase mineralisation history at the Nifty Cu deposit.
  • Hydrothermal apatite chemistry suggests Cu-mobilising alkaline, low-salinity fluids enriched in medium rare earth elements—similar to Olympic Dam.
  • Monazite textures and ages show late-stage Cu remobilisation, potentially linked to regional granitic magmatism during the Ediacaran (ca. 640 Ma).

Ribeiro, B.V., Kirkland, C.L., Hartnady, M.I.H., Martin, E.L., West, E. & Polito, P. (2023). Multi-stage alteration at Nifty copper deposit resolved via accessory mineral dating and trace elements. Precambrian Research, 388, 107018. https://doi.org/10.1016/j.precamres.2023.107018.

Geochemistry
Geochronology
Resource Geoscience

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Earth's Permian magnetic memory

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  • An extensive Permian paleomagnetic dataset from Moroccan basins yields primary magnetizations in 9/10 basins, anchored by radiometric ages and magnetic reversals.
  • Results place the Meseta block near the paleo-equator ca. 280 million years ago and show minimal inclination shallowing, strengthening reliability of red-bed records.
  • Based on the new data large continental overlap and an alternative ''Pangea B'' configuration is not required.

Weissbrodt, V., Bachtadse, V., Kirscher, U., Saber, H., Liu, Y. & Ronchi, A. (2024). Tectonic imprints in Permian paleomagnetic data of Morocco. Earth-Science Reviews, 254, 104787. https://doi.org/10.1016/j.earscirev.2024.104787.

Magnetism and Palaeomagnetism

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Tracking heat and time in the Grenville Orogen through rutile

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  • Rutile U–Pb dating reveals three distinct cooling events (ca. 1158, 1069–1056, and 936–910 Ma) in a Grenville anorthosite complex, highlighting episodic magmatic emplacement.
  • Zirconium-in-rutile temperatures trace higher apparent temperatures (> 800 °C) in earlier events, capturing a complex crustal thermal evolution.
  • Findings support a lithospheric architecture enabling bottom-up magma ascent and top-down hydrothermal fluid flow.

Liebmann, J., Barham, M. & Kirkland, C.L. (2023). Rutile ages and thermometry along a Grenville anorthosite pathway. Geochemistry, Geophysics, Geosystems, 24, e2022GC010330. https://doi.org/10.1029/2022GC010330.

Geochemistry
Geochronology

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Mineral Geochronology
Mineral Geochronology
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Mineral Trace Element Analysis
Petrochronology
Petrochronology
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Safeguarding Coastal Aquifers: Understanding freshwater–seawater exchange

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  • Groundwater discharge into the oceans is vast but difficult to quantify due to complex density and recirculation effects.
  • Seawater intrusion depends on vertical and lateral hydraulic connectivity near shorelines, not simply average aquifer properties or groundwater throughflow.
  • Simple analytical models and uncorrected water levels can provide a misleading representation of seawater intrusion; correct groundwater pressure measurements and near‑shore hydraulic properties allow credible, decision‑grade estimates.

Costall, A.R., Harris, B.D., Teo, B., Schaa, R., Wagner, F.M. & Pigois, J.P. (2020). Groundwater throughflow and seawater intrusion in high quality coastal aquifers. Scientific Reports, 10, 9866. https://doi.org/10.1038/s41598-020-66516-6.

Environmental Geoscience

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Multi-hazards Risk Assessment
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Cosmogenic krypton in zircon reveals million-year sediment journeys and landscape stability

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  • Cosmogenic krypton measured in detrital zircon records million-year near-surface residence times, extending landscape evolution analysis far beyond conventional cosmogenic dating limits.
  • Southern Australia’s Eocene hinterland experienced exceptionally low long-term denudation, indicating tectonically stable landscapes with prolonged sediment storage and recycling.
  • Shifts from mature to less mature heavy mineral sands track changes in uplift and sea level, linking sediment quality directly to landscape dynamics and transport efficiency.

Dröllner, M., Barham, M., Kirkland, C. L., Scharf, T., Niemeyer, S. & Dunai, T. J. (2026). Ancient landscape evolution tracked through cosmogenic krypton in detrital zircon. Proceedings of the National Academy of Sciences, 123(3), e2516058122. https://doi.org/10.1073/pnas.2516058122

Geochronology
Regolith and Sedimentology
Resource Geoscience

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U–Pb Geochronology
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Isotopic Fingerprinting

From Space to Street: Satellite solutions for smarter, cooler cities

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  • Satellite-derived land surface temperature now reaches up to 10 m spatial and 15 min temporal resolution using open-access data.
  • Combining open satellite data enables daily, high-detail thermal mapping to support energy, health, and planning.
  • Machine learning and regression-based methods enhance urban heat detection across complex cityscapes.

Andriambololonaharisoamalala, R., Helmholz, P., Ivanová, I., Jones, E., Soon, S., Bulatov, D. & Song, Y. (2025). Enhancing the spatial and temporal resolution of satellite-derived land surface temperature in urban environments: A systematic literature review. Urban Climate, 60, 102345. https://doi.org/10.1016/j.uclim.2025.102345.

Geoinformatics and Geocomputing

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