Luminous Landscape Forum

Equipment & Techniques => Landscape & Nature Photography => Topic started by: sdwilsonsct on August 04, 2013, 02:34:30 pm

Title: Erratics
Post by: sdwilsonsct on August 04, 2013, 02:34:30 pm

Thanks for looking.

Title: Re: Erratics
Post by: Isaac on August 04, 2013, 04:46:03 pm

Are they actually erratics?

Without a fresh surface it's difficult to see any difference with the country rock.

Title: Re: Erratics
Post by: churly on August 06, 2013, 12:24:13 am

I like this a lot.  Nicely composed.

Title: Re: Erratics
Post by: SunnyUK on August 06, 2013, 06:27:56 am

Quote from: Isaac on August 04, 2013, 04:46:03 pm

Are they actually erratics?

What is an erratic?

Title: Re: Erratics
Post by: Chairman Bill on August 06, 2013, 06:32:05 am

Quote from: SunnyUK on August 06, 2013, 06:27:56 am

What is an erratic?

Erratics are rocks that are out of place with the local geology, and usually indicate past passage by a glacier. The glacier picks up rock as it scours the underlying geology, then deposits some of that rock at later stages in its path. Once the glacier has melted, you get left with rocks that seemingly have no relationship with the surrounding geology.

Title: Re: Erratics
Post by: SunnyUK on August 06, 2013, 10:02:48 am

Quote from: Chairman Bill on August 06, 2013, 06:32:05 am

Erratics are rocks that are out of place with the local geology, and usually indicate past passage by a glacier. The glacier picks up rock as it scours the underlying geology, then deposits some of that rock at later stages in its path. Once the glacier has melted, you get left with rocks that seemingly have no relationship with the surrounding geology.

Thanks Bill. Much appreciated.

Title: Re: Erratics
Post by: Isaac on August 06, 2013, 12:52:03 pm

iow an erratic is a boulder with a question mark - How did that get there?

Title: Re: Erratics
Post by: sdwilsonsct on August 06, 2013, 03:55:29 pm

Thanks, Chuck.

Isaac -- I just shoot. I leave the explanations to others.  :)

Title: Re: Erratics
Post by: Isaac on August 06, 2013, 04:43:37 pm

So, Untitled :-)