JFC

The detailed measurements on everything is just *chef's kiss*

I love all my sock dreams socks!!!

Excellent...I'm not up on the opening age, so this is very helpful! 👍

On the continental shelf most likely. The division between continental/ocean crust occurs fairly far out around New England....we have a pretty broad continental shelf, which is part of why we have such vibrant fisheries (well, HAD).

(thanks, all my good figures are on paper, 😂😂😂)

I mean, the orogenies *created* what we now know as the east coast. It didn't exist before the Iapetus closed. So yes, Baltimore used to be the seafloor about 500 M years ago. I haven't studied that particular area, but my entire field camp was on the Taconic in Newfoundland/Atlantic Canada.

I think there's a small body near Windham, but not much else.

Yep that's right!

NGL now that I think about it, it was very Dead Marshes-like from LotR 😅

There's very little serpentinite in NH (I'm from there)....it's mostly granites and pegmatites up there.

bsky.app/profile/hell...

The best part is the crust-mantle boundary at Table Mt is mostly hidden under a massive bog lol. There's a couple exposures of the gabbro/harzburgite contact but the big one is under a bog. 🙃

Mid Atlantic states/region.

The seafloor sediment/rock was emplaced above sea level....the only way you're doing that is uplift (in this case via basin closure and compression/uplift of the accretionary wedge)

So the Taconic-Appalachian-Allghenian orogenies occurred successively from N to S along the E coast of Canada/US as the basin closed. An island arc was essentially plowing into Laurentia. The seafloor sediment in between was folded/uplifted. The compressive/collison force also helped build mtns.

Whoops sorry misread this.....I don't think they closed/opened in the same place necessarily....but I'm not super familiar with any recent work on this.

No, the Iapetus was closing during the Taconic orogeny. The Atlantic ocean didn't open until ~150 Ma. The Taconic sequence began at ~480Ma &completed by ~440Ma if I remember right. It was followed by the Appalachian & Alleghenian orogenies, which occurred progressively southward as the basin closed.

Take the ferry over to Labrador and you can see in situ archaeocyathids (the earliest reef-forming organisms) preserved on the coast at Red Bay.

Yes, you too can walk on the mantle at Table Mountain (harzburgite) and see pillow lavas at Green Gardens!

Further south towards the Port au Port peninsula there's stromatolite mounds that were uplifted and gypsum deposits left over from the evaporation of the last dregs of a closed ocean basin.

If you ever get the chance to travel to Newfoundland, the western coastline is littered with the remnants of the Taconic...folded sedimentary structures, sulfide deposits from ancient hydrothermal vents, and even an ophiolite sequence at Gros Morne (a UNESCO site!).

How did we get seafloor emplacement/uplift in the Mid-Atlantic? Well, you can thank the Taconic-Appalachian-Alleghenian orogenic sequence that started during the Ordovician for that.

The closure of the Iapetus ocean fundamentally controlled the formation of what we now know as the US East coast.

What's *really* neat (and not shown here) is that the pressure gauges we have deployed in the CORKs well below the seafloor on the JdF flank will also have recorded this earthquake!

I need to resolve my lack of MATLAB, then I can de-tide things again....

Nice article about the quake off the coast of Japan and the subsequent advisory. 🧪

This is essentially true for all of federally funded science at this point. 🙃

And it really is a multi-decade thing.

Reminder that today is BOGO free entrees at Chipotle if you wear a hockey jersey (after 3 pm)!!

Yep I was right, didn't get this either. :/

137 applicants for 4 berths (according to PIs) is absolutely fuckin insane tho.

Extra savage wearing my CWS ring to a rematch of that championship. 😎 #Umiami #stanford

A report from the House Science Democrats documents how, at OMB direction, NASA attempted to execute the president’s FY26 budget request rather than follow Congressional appropriations