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Chris White · @Ceedave
106 followers · 128 posts · Server sciencemastodon.com
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Now the more facies of the

The Quincy granite was a prized architectural stone, most famously used in the Monument in . Current dating suggests it was intruded into before it glommed onto as and were assembled. Today’s set comes from a walk around the eponymous Bunker Hill Quarry. I’ll post more about the history later. Captions!

#riebeckite #Paleozoic #quincy #granite #bunkerhill #boston #massachusetts #avalonia #laurentia #laurasia #pangea #photo #fujifilm #xh1 #igneous #intrusive #newengland

Last updated 2 years ago
Original post

Chris White · @Ceedave
106 followers · 128 posts · Server sciencemastodon.com
Open media

Now the more facies of the

The Quincy granite was a prized architectural stone, most famously used in the #Hill Monument in . Current dating suggests it was intruded into before it glommed onto as and were assembled. Today’s set comes from a walk around the eponymous Bunker Hill Quarry. I’ll post more about the history later. Captions!

#riebeckite #Paleozoic #quincy #granite #bunker #boston #massachusetts #avalonia #laurentia #laurasia #pangea #photo #fujifilm #xh1 #igneous #intrusive #newengland

Last updated 2 years ago
Original post

Chris White · @Ceedave
103 followers · 119 posts · Server sciencemastodon.com
Open media

Quincy or
An alkaline, nonorogenic granite intruded into in the / as it cruised from peri- to , before assembling in the (). It’s coarse, with the of amphiboles(?) (possibly riebeckite?)…I’m no petrologist. From@the Eaton’s Pond conservation area@at the border. My photos.

#bluehills #porphyry #granite #avalonia #silurian #Ordovician #gondwana #laurentia #pangea #acadian #orogeny #devonian #phenocrysts #braintree #quincy #geology #igneous #massachusetts #boston #newengland #fujifilm #photo

Last updated 2 years ago
Original post