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Category Archives: rocks & minerals
New at Erratics: the mysterious iron ore of Bell Island, Conception Bay, Newfoundland
We’re pleased to welcome our latest contributer to Earth Science Erratics: Tim Sherry, a graduate student at McGill University. His first entry (cross-posted from Tim’s newly created geoblog, Up-Section), gives an account of a memorable stop on a recent field … Continue reading
New at Erratics: Chalk is weird
The theme for the upcoming Accretionary Wedge is ‘weird geology’. In his contribution, Simon Wellings takes a look at what might superficially appear to be an unlikely subject: the chalk that forms the rolling hills of southern England: No texture, … Continue reading
New at Erratics: more adventures in copper mineralisation
Nina Fitzgerald, our latest Earth Science Erratics contributor, continues and concludes her run of guest posts with two more articles on copper mineralisation. In the first, she explains the role of hydrothermal sulphide mineralisation in forming copper ore: Still wondering … Continue reading
New at Erratics: from lahar to suevite
In his second post at Earth Science Erratics Simon Wellings reveals a rather interesting deskcrop, collected from Scotland in his youth: Since it was picked up, this rock has changed identities: what was once thought to be a mud flow … Continue reading
Using rock cubes to learn about hydrogeology
Dunking rocks in water – and doing some measurements and calculations – helps my students get a hands-on understanding of porosity. Continue reading
Glacial deposits new and old in the Scottish isles
Islay – one of the birthplaces of the Snowball Earth. And good whisky. Continue reading
Standing up for serpentinite
The presence of serpentinite is like a big red flag telling geologists “interesting tectonic stuff here!”. But in California, that might not be the only red flag that you will be seeing in the future, if the state government have their way. Continue reading
2 concordant zircons
On the 2nd day of Christmas my true love sent to me…
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Earth Science Week Challenge Day 4: Rocks rocks rocks
Will the geoblog readers put rocks in elementary kids’ stockings?
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