No idea what this is

[dave5898]

Found this while using a stone rake on a tractor today, thot it was concrete but it looks like granite.its approx 70lbs and about 20 inches long.i found it in ontario canada. I did hit it with the rake so it is scratched up.. sorry for the picture quality, it is dark out and all i had was my phone.. also i apologize if this is posted in the wrong spot

[Mahnmut]

4 hours ago, dave5898 said:

concrete but it looks like granite.

 

Hello Dave and welcome to the forum!

Could it be both? I do not recognize a fossil here, which does not mean there isnt one.

But I could imagine this to be a boulder (granite maybe) that had been put upright into a concrete base as an ornament. 

That would be of course only plausible if you are at a spot with recent but not to recent building activity, to have a chance for the thing to get lost and found again.

Best Regards,

J

[FranzBernhard]

1 hour ago, Mahnmut said:

ornament. 

Or boundary stone / landmark?

Franz Bernhard

[Ludwigia]

Whatever it is, it's not a fossil.

[dave5898]

no previous structures just field after field. And it doesn't appeat to be concrete on the end.. i will say it is an odd formation.. thank you for your knowledge, it will go in my rock garden.

[Rockwood]

This looks like the work of a much larger rake. An ice sheet. The bulbous end being a layer that was slightly more resistant to the abuse. Till teeth is what I call them. Smaller versions are relatively common in glacial material.   

[Tidgy's Dad]

Looks like limestone to me. 

Does it fizz slightly if you appy some vinegar? 

Though I suppose concrete or cement would fizz too? 

Edited May 11, 2023 by Tidgy's Dad

[dave5898]

I will clean it up and try that this evening.thank you

[doushantuo]

differential clast weathering,something along the line postulated by Rockwood("drumstick"):

some roman milestones near Brescia look somewhat similar

for "roman" read: Roman(as in "Roman antiquity")

Edited May 11, 2023 by doushantuo

[dave5898]

So its not limestone or concrete.. it turns out to be all granite 73lbs worth, Rockwood may be right.it cleaned up very nice and is quite a unique looking addition to the flower bed. Thanx everyone

[supertramp]

looks like a contact between aplitic granite (vein?) and gneiss;

ciao

https://www.earth.ox.ac.uk/~oesis/rocks/met5.html

https://www.reddit.com/r/geology/comments/6yx6ly/contact_granite_and_migmatitic_gneiss_from/

 

 

 

 

 

 

[dave5898]

Thanx so much.. very informative.