Naked Science Forum

Non Life Sciences => Geology, Palaeontology & Archaeology => Topic started by: jcdostie on 09/02/2016 00:36:00

Title: Unidentify rock found in northern part of Canada
Post by: jcdostie on 09/02/2016 00:36:00

Hello,
I'm new here and french speaking, most of the time ;-)
Look at those pictures, we have found this rock at those coordinates, about 20' from the shoreline of the Rupert River
51° 21.919'N
77° 46.903'W

(https://www.thenakedscientists.com/forum/proxy.php?request=http%3A%2F%2Fwww.jcdostie.com%2Fmission%2Froche_texte.jpg&hash=840157b7a567f0d2d787678909ddab22)

(https://www.thenakedscientists.com/forum/proxy.php?request=http%3A%2F%2Fwww.jcdostie.com%2Fmission%2Froche.jpg&hash=1134955c9ad8a67121b164635b79f989)

(https://www.thenakedscientists.com/forum/proxy.php?request=http%3A%2F%2Fimg11.hostingpics.net%2Fpics%2F325922001.jpg&hash=d7a2d2b4f75ccb0e7c2d1f3e718584d1)

And we made a video of the discovery

Any help would be appreciate

Thanks
JC

Title: Re: Unidentify rock found in northern part of Canada
Post by: Atomic-S on 09/02/2016 06:49:15

I have no idea. The depth of carving suggests this is not the work of a weekend graffitist. It should be looked at by someone learned in indigenous artifacts.

Title: Re: Unidentify rock found in northern part of Canada
Post by: RD on 17/02/2016 07:53:46

It's a fossil rather than an artefact.

Cross-section of tubular sponge ?

(https://www.thenakedscientists.com/forum/proxy.php?request=http%3A%2F%2Fwww.kgs.ku.edu%2FExtension%2Ffossils%2Fjpegs%2FAmblysiphonella1.jpg&hash=6f4f53fa66c508050911f338baf5bd22)
http://www.kgs.ku.edu/Extension/fossils/sponge.html

(https://www.thenakedscientists.com/forum/proxy.php?request=http%3A%2F%2Fmarilynfenn.com%2Fwp-content%2Fgallery%2Forganic-inspiration-spikey-and-tubular-things%2Fsponge.jpg&hash=298d0cddff605dca6fd60f935647e8a3)

Try ... http://www.thefossilforum.com/index.php?/forum/14-fossil-id/

Title: Re: Unidentify rock found in northern part of Canada
Post by: Colin2B on 17/02/2016 09:02:56

Neat, it really did look carved.
Thanks for the link

Title: Re: Unidentify rock found in northern part of Canada
Post by: Ophiolite on 18/02/2016 11:19:42

While I don't rule out the possibility that RD's explanation is correct, I have serious doubts. The rock appears to be a basic igneous rock, possibly a basalt - not the normal environment for tubular sponges! Now it could be a medium grained sandstone, but without a much closer view I should not like to give a definitive answer.

Title: Re: Unidentify rock found in northern part of Canada
Post by: jcdostie on 18/02/2016 12:46:56

Thanks all for the replies.
I spoke with a geologist and he told me it might be a Stromatolite

I think the tubular sponge is much more similar from what I can see

Quote from: Ophiolite on 18/02/2016 11:19:42

The rock appears to be a basic igneous rock, possibly a basalt - not the normal environment for tubular sponges! Now it could be a medium grained sandstone, but without a much closer view I should not like to give a definitive answer.

I don't think it's a sandstone. It's very hard. What other pictures do you need ?

JC

Title: Re: Unidentify rock found in northern part of Canada
Post by: RD on 18/02/2016 12:47:34

Quote from: Ophiolite on 18/02/2016 11:19:42

I have serious doubts. The rock appears to be a basic igneous rock, possibly a basalt ...

How about a thin [grey] coating of basalt on sandstone ? , ( coating is weathering-off ) ...

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Title: Re: Unidentify rock found in northern part of Canada
Post by: jcdostie on 18/02/2016 12:56:11

HUM !!! Very interesting.
I will have a closer look this week-end.
The rock is at my friend's house now and it's cover with snow.

JC

Title: Re: Unidentify rock found in northern part of Canada
Post by: RD on 18/02/2016 13:28:34

Fingers-crossed from some angle it looks like the cookie-monster  :¬)

(https://www.thenakedscientists.com/forum/proxy.php?request=http%3A%2F%2Fi.dailymail.co.uk%2Fi%2Fpix%2F2013%2F09%2F23%2Farticle-2428961-18297DFD00000578-92_634x419.jpg&hash=0e87533b19a2301e1685415090a492e8)(https://www.thenakedscientists.com/forum/proxy.php?request=http%3A%2F%2Fi.dailymail.co.uk%2Fi%2Fpix%2F2013%2F09%2F22%2Farticle-0-18297CEF00000578-775_634x426.jpg&hash=73d646bcea5a5d044682222d9f8fb2a8)
http://www.dailymail.co.uk/sciencetech/article-2428961/Want-cookie-Amazing-picture-underwater-animal-looks-like-Sesame-Street.html

Title: Re: Unidentify rock found in northern part of Canada
Post by: Bass on 02/03/2016 21:27:46

Try putting some hydrochloric acid on the rock- it may well be limestone (you'll get fizzy bubbles).