Naked Science Forum

Non Life Sciences => Geology, Palaeontology & Archaeology => Topic started by: ebromb on 24/02/2016 18:06:25

Title: what is this very heavy rock found in the ocean in NYC?
Post by: ebromb on 24/02/2016 18:06:25

 [ Invalid Attachment ] VERY heavy for the size (about a small fist). Not magnetic.

Title: Re: what is this very heavy rock found in the ocean in NYC?
Post by: chris on 24/02/2016 18:13:47

Can you do some close-ups of the surfaces please? It's a bit hard to see clearly in those pictures.

Title: Re: what is this very heavy rock found in the ocean in NYC?
Post by: ebromb on 24/02/2016 18:17:59

see attached

Title: Re: what is this very heavy rock found in the ocean in NYC?
Post by: ebromb on 24/02/2016 18:19:22

one more

Title: Re: what is this very heavy rock found in the ocean in NYC?
Post by: chris on 24/02/2016 18:33:51

It looks like part of a conduit, possibly a lump of black smoker or similar, I would speculate with my untrained eye...

Title: Re: what is this very heavy rock found in the ocean in NYC?
Post by: RD on 25/02/2016 00:25:25

It could be man-made, e.g. lead used to seal an iron-pipe ...
(https://upload.wikimedia.org/wikipedia/commons/thumb/e/e6/Lead_electrolytic_and_1cm3_cube.jpg/800px-Lead_electrolytic_and_1cm3_cube.jpg)
https://en.wikipedia.org/wiki/Lead
 
[ It (http://www.thenakedscientists.com/forum/index.php?action=dlattach;topic=65938.0;attach=21040;image) has vesicles (https://en.wikipedia.org/wiki/Vesicular_texture) , so you can rule-out meteorite ].

Title: Re: what is this very heavy rock found in the ocean in NYC?
Post by: Bass on 02/03/2016 21:20:30

My guess is some sort of industrial slag.

Title: Re: what is this very heavy rock found in the ocean in NYC?
Post by: chris on 03/03/2016 20:08:22

Quote from: Bass on 02/03/2016 21:20:30

My guess is some sort of industrial slag.

I'm glad you came by!