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Thread: Rocks and such.

  1. #1
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    Default Rocks and such.

    Here's a start.

    I'd much rather lay in my bunk all freakin day lookin at Youtube videos .

  2. #2
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    Default Re: Rocks and such.

    Nearer to Isla....

    I'd much rather lay in my bunk all freakin day lookin at Youtube videos .

  3. #3
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    Default Re: Rocks and such.

    I've seen some rocks here and there...



    Glaciers can remove an awful lot of topsoil.

    Tom
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  4. #4
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    Default Re: Rocks and such.

    Quote Originally Posted by P.I. Stazzer-Newt View Post
    Here's a start.

    My Neolithic ancestors could have made a lot of tools from that!

    No truth in the rumour that Migmatites are fossilised midges.

  5. #5
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    Default Re: Rocks and such.

    Quote Originally Posted by birlinn View Post
    My Neolithic ancestors could have made a lot of tools from that!
    I could make a lot of tools from that. In particular some very effective arrow heads. Back when everyone was paranoid about terrorists trying to smuggle weapons onto planes, I remember thinking that someone with an inoffensive looking chunk of obsidian and a small hammerstone could literally strike off blades in one stroke that are sharper than any scalpel. I'm glad they didn't think of it. JayInOz

  6. #6
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    Default Re: Rocks and such.

    we got rocks in az

    5-chiricahua-national-monument-paul-moore.jpg

    cathedral-rock-glow.jpg

    does sandstone count?

    b0.jpg

    used to be a tree

    patrick_fuchs_pefo.jpg
    Simpler is better, except when complicated looks really cool.

  7. #7
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    Default Re: Rocks and such.

    IMG_3596.jpg


    Craters of the Moon National Monument, Idaho.

    DSC_0198.jpg

    Cambro-Ordovician Boundary, Green Point, Newfoundland. Budding Paleontologist for scale.
    Last edited by Fitz; 10-02-2022 at 05:22 PM.
    "Wherever there is a channel for water, there is a road for the canoe. " - Thoreau

  8. #8
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    Default Re: Rocks and such.

    Quote Originally Posted by birlinn View Post
    My Neolithic ancestors could have made a lot of tools from that!

    No truth in the rumour that Migmatites are fossilised midges.
    A rough out from the Langdale axe factory.


    and after polishing on the beach.


    https://en.wikipedia.org/wiki/Langdale_axe_industry
    It really is quite difficult to build an ugly wooden boat.

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  9. #9
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    Default Re: Rocks and such.

    DSC_0158.jpg

    560 to 580 million year old critters from the Endiacaran Period, Mistaken Point, Newfoundland.

    DSC_0159.jpg

    Mistaken Point, UNESCO World Heritage Site.

    https://whc.unesco.org/en/list/1497/
    "Wherever there is a channel for water, there is a road for the canoe. " - Thoreau

  10. #10
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    Default Re: Rocks and such.

    A bunch of rocks.. aka St Kilda.
    st_kilda_aerial_header_01_2021-09-20-164812_zjpc.jpg
    Just an amateur bodging away..

  11. #11
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    Default Re: Rocks and such.

    Newberry Crater - the OP - is a marvelous spot, indeed.

    Our boating group has a regular messabout there, on Paulina Lake. Great sailing spot. There's an unimproved shorline hot spring. And hikes up into the lava flows, or just around the lake, are not uncommon. Between COVID and more difficult reservation policies we've skipped the last couple of years, but I'm hoping to get back there next year.

    The same volcanic activity further North in the Cascades has left several other wonderful sites for obsidian, or for lava flows in general. And many other places as well. From Idaho, all the way down to the coast --

    Picture this (millions of years ago): a massive river of lava erupts in Idaho, so big it covers miles at a time as it marches along around 4 mph. It sears entire forests into ashes and fumes. It builds gigantic damns of molten rock that are perhaps miles long, sometime bulging up to 20 feet high. It marches its way through riverbeds and canyons, snaking its way around mountains, until it slithers its sinister, scorching heat into the ocean – some 300 miles - about seven days later.


    It’s hundreds of miles long, spewing out continuously and so fiercely that when it reaches the ocean it fills crevices and muddy areas thousands of feet deep.

    https://beachconnection.net/news/lavasca072615_656.php



    David G
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  12. #12
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    Default Re: Rocks and such.

    I'd much rather lay in my bunk all freakin day lookin at Youtube videos .

  13. #13
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    Default Re: Rocks and such.

    Here's a very interesting rock carving that is now submerged!

    Simplicity is the ultimate sophistication. Leonardo da Vinci.

    If war is the answer........... it must be a profoundly stupid question.

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  14. #14
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    Default Re: Rocks and such.

    Spent 14 years working in this sort of terrain: Wind River Range, Wyoming.



    Igneous rock: granite, quartz diorite, quartz monzonite, diabase, and also metamorphic rocks: gneiss, migmatite, etc. On the margins are remnant sedimentary formations that weathered off the rising igneous core, seen in the limestone and dolomite strata of White Rocks Mountain (L) with the igneous block of Squaretop on the right, separated by a major fault now the headwaters of the Green River.


  15. #15
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    Default Re: Rocks and such.

    There are some quite important rocks in the Cotswold.
    It really is quite difficult to build an ugly wooden boat.

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  16. #16
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    Default Re: Rocks and such.

    DSC_0180.jpg

    Gros Morne National Park, Newfoundland. This is a block of obducted mantle.

    DSC_0182.jpg

    The soils generated from the peridotite are poor, so plants like pitcher plants that feed themselves thrive.
    "Wherever there is a channel for water, there is a road for the canoe. " - Thoreau

  17. #17
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    Default Re: Rocks and such.

    Quote Originally Posted by James McMullen View Post
    Yeadon is right, of course.

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