Sean Upton-McLaughlin · @SeanUM_China
85 followers · 101 posts · Server newsie.social
Chris White · @Ceedave
103 followers · 119 posts · Server sciencemastodon.com

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

Chris White · @Ceedave
97 followers · 110 posts · Server sciencemastodon.com

I should have mentioned in my lead post that…

The map labels the rock at what it (and the historic map) call Babel Rock as the Babel Rock diabase. The and most current maps put Babel Rock further north, where the only mapped bedrock is granite.

This is pretty diagnostic, as there are few mafic intrusions into the felsic Quincy/Blue Hills pluton…those few are mostly dike in form and Jurassic, whereas Babel Rock is dated as Carboniferous.

Just saying.

#usgs #bluehills #quad #bedrock #topo

Last updated 2 years ago

Chris White · @Ceedave
94 followers · 96 posts · Server sciencemastodon.com

Where is Babel Rock?

The map and a show Babel Rock overlooks a pond from just north of a bend in Rd. I have been on that rock, and it's , a into the Quincy . But the USGS quad & derivatives e.g. show it adjacent to the (source of the for the monument in ).

Should a correction be proposed to USGS? Advice welcomed.

#usgs #bluehills #quad #bedrock #quincy #massachusetts #historical #map #wampatuck #diabase #mafic #intrusion #Pluton #topographic #googleearth #bunkerhill #quarry #granite #boston

Last updated 2 years ago

mbskis · @mbskis
170 followers · 553 posts · Server mindly.social

Beautiful adventure in the Blue Hills today. My friend and I playing the role of mountain goat.

#hikinggirl #hiking #OptOutside #outside #nature #bluehills #boston

Last updated 2 years ago

ConstantOrbit · @constantorbit
549 followers · 798 posts · Server hachyderm.io

About a year ago, up on Blue Hills Reservation.

#silentsunday #sunset #clouds #bluehills

Last updated 2 years ago

ConstantOrbit · @constantorbit
452 followers · 572 posts · Server hachyderm.io

@harveyparadox Would have been a great day to be up there! 🙌 Looks awesome.

(My partner has so isn't in the cards for walks we do together. But I'm up Blue Hills a lot on my own)

#Parkinsons #bluehills

Last updated 2 years ago

Alex Weech · @aweechwhobikes
32 followers · 34 posts · Server better.boston

The Region Metropolitan Planning Organization put out an interesting study on increasing access to the . They recommend adding a low-frequency shuttle around the reservation. That's probably find, and access right now is abysmal, so anything is better than nothing.

From the point of view of a resident, bringing the 238 to 30 minute frequency would be a great way to increase access on this side of the reservation.

storymaps.arcgis.com/stories/7

#boston #transit #bluehills #quincy

Last updated 2 years ago