2025-12-22 – Weekly Geology News : Etna’s tremor bump this morning

Last week in the forum saw an engaging blend of technical discussions and practical insights. Members delved into the intricacies of geological processes, with a significant focus on field techniques and mineral analysis. A recurring theme was the application of geoscience in environmental contexts, particularly concerning contaminants and their management. The community also shared updates on recent seismic activities, sparking conversations about monitoring technologies.


This Week’s Hot Topics

Carlsbad twinning on a roadside feldspar
This thread explores the fascinating occurrence of Carlsbad twinning in feldspar samples found by the roadside, a reminder of the complexity and beauty of mineral formations.
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From outcrop to Outlook calendar
A practical discussion on integrating fieldwork findings with digital tools, streamlining the process from geological exploration to project management.
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Why do some dolostones fluoresce orange
This question has sparked a lively exchange about the mineralogical reasons behind the fluorescence in dolostones, a curious phenomenon for many geologists.
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Phase II scope creep with PFAS
The conversation focuses on the challenges of managing scope creep in environmental projects dealing with PFAS contamination, highlighting regulatory and technical hurdles.
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Soft clay: rigid inclusions or piles
Geotechnical engineers discuss the merits of using rigid inclusions versus piles in soft clay soils, weighing the pros and cons for stabilization.
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Etna’s tremor bump this morning
An update on Etna’s recent seismic activity, with experts weighing in on potential implications and monitoring techniques.
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Arguing with a sand body in Petrel
A technical dive into challenges faced when modeling sand bodies using Petrel software, a must-read for those in reservoir characterization.
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Choosing recorders for 48-hour aftershock sweeps
This thread shares advice on selecting the best recording equipment for aftershock monitoring, a crucial aspect of seismic data accuracy.
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Pathfinders for Carlin-type gold
A discussion on identifying pathfinder elements for Carlin-type gold deposits, offering insights into exploration strategies.
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Getting reliable pXRF numbers in wet soils
Members share techniques for obtaining accurate portable XRF readings in challenging wet soil conditions, a common fieldwork hurdle.
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Looking forward to seeing more of your contributions and discussions. Have a great week ahead.

1 Like

“48-hour aftershock sweeps” We’ve had the best results running 100 Hz on 24‑bit nodes with low gain and a GPS resync at hour 24 — this morning’s Etna tremor bump clipped anything hotter. If you’re budget‑capped, the under‑$1k units are fine, but plant 2–5 m off trails to dodge footfall noise.

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On Etna this summer we kept the morning tremor from clipping by planting nodes about 10 cm into compact scoria and capping with a flat rock for thermal/footfall damping; @matthew93 low‑gain helped, but without that shallow burial we still saw overranges.

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