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| Messages 1 - 11 of total 11 in this topic |
PaulC
Social climber
Traffic Jam Ledge
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Topic Author's Original Post - Jun 14, 2011 - 04:01pm PT
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Any insights?
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PaulC
Social climber
Traffic Jam Ledge
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Topic Author's Reply - Jun 14, 2011 - 04:19pm PT
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Google Image Search is not available yet. The above rock was found in the Virgin River near Zion National Park.
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Spider Savage
Mountain climber
SoCal
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Jun 14, 2011 - 04:27pm PT
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Nice! Most geologists lay and object in for scale such as a hammer or loose change.
Interesting task to imagine the forces at work to create this formation. I'm guessing percolating water like from an underwater spring tossing lighter particles, a flood carrying the dark particles comes in then within a few seconds the whole mass buried by lighter material. (Complete conjecture) Magnetism may have been involved with the formation of the hematite.
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PaulC
Social climber
Traffic Jam Ledge
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Topic Author's Reply - Jun 14, 2011 - 04:34pm PT
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Sorry. In my haste, I failed to add an item for scale. In the two dimensions that are shown, it is about 10cm (max) by 8cm (max).
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healyje
Trad climber
Portland, Oregon
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Jun 14, 2011 - 04:40pm PT
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Pretty find. It does happen...
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kev
climber
A pile of dirt.
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Jun 14, 2011 - 04:50pm PT
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paging Minerals
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PaulC
Social climber
Traffic Jam Ledge
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Topic Author's Reply - Jun 14, 2011 - 05:01pm PT
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Correct scale (a blue Camalot):
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PaulC
Social climber
Traffic Jam Ledge
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Topic Author's Reply - Jun 14, 2011 - 08:21pm PT
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I'm going with Tami's answer. Her work is always awesome.
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Pakdong
climber
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Jun 14, 2011 - 08:31pm PT
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not hematite.
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mcreel
climber
Barcelona
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Jun 15, 2011 - 04:13am PT
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My grandfather used to take rocks like that and carve away the soft stuff, exposing the hard black stuff. I did a few myself, back in my youth. The black stuff is really hard, like iron (which may be what it is). The end result is a nice work of art which can make a great element in a bonsai setting. For example, plant the little tree, maybe a juniper pine, in a hole carved through the rock, if the hard black stuff allows it.
So, in my experience, the black stuff typically extends to the interior, and may go all the way through.
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| Messages 1 - 11 of total 11 in this topic |
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