"Initials" by "Florian Körner", licensed under "CC0 1.0". / Remix of the original. - Created with dicebear.comInitialsFlorian Körnerhttps://github.com/dicebear/dicebearPH
Phys.org 3w ago
Jump
Geologists discover mysterious subduction zone beneath Pacific, reshaping understanding of Earth's interior

cross-posted from: https://lemmy.world/post/20023406

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play.google.com

cross-posted from: https://lemmy.world/post/19125777 > Lovecraft’s Untold Stories is an action roguelike with RPG elements.

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What kind of stone is this mantle? [SOLVED]
  • "Initials" by "Florian Körner", licensed under "CC0 1.0". / Remix of the original. - Created with dicebear.comInitialsFlorian Körnerhttps://github.com/dicebear/dicebearCU
    Cuzscience
    2mo ago 100%

    A lot of heat and a lot of pressure would be a start, but then there’s a time factor as well. The heat and pressure mess around with the rocks mineral constituents, but the real “magic” begins as those minerals start recrystallizing. In time (geologic time) that recrystallization makes a much harder rock.

    I honestly don’t know if the process can be sped up. I’m thinking of something like firing bricks, but bricks are made with specific ingredients and certain impurities are specifically excluded because they hurt the manufacturing. When you start with shale, lord knows what mother nature threw into that specific specimen and how she arranged it.

    I guess the easiest way to get shale harder might be to crush it finely, mix it with water and bake it. If you’re lucky the clay minerals will find each other and form a strong matrix. It wouldn’t be slate, or even a rock anymore, but bricks are handy sometimes.

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  • What kind of stone is this mantle? [SOLVED]
  • "Initials" by "Florian Körner", licensed under "CC0 1.0". / Remix of the original. - Created with dicebear.comInitialsFlorian Körnerhttps://github.com/dicebear/dicebearCU
    Cuzscience
    2mo ago 100%

    Shale is not a good building material, it’s too friable (crumbly). Slate starts off as the same rock ans shale except it undergoes a bunch of heat and pressure which makes it much less friable and an excellent material for things like roofing tiles and mantles.

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  • I saw this on the news and my mind took me to Thebes.

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    cross-posted from: https://sopuli.xyz/post/15565315

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    What is this bug I saw in Texas?
  • "Initials" by "Florian Körner", licensed under "CC0 1.0". / Remix of the original. - Created with dicebear.comInitialsFlorian Körnerhttps://github.com/dicebear/dicebearCU
    Cuzscience
    4mo ago 100%

    iNaturalist is definitely a good suggestion, but it is NOT an assassin bug, wrong markings and body form. It looks to be in the genus Alysus. Here’s what iNaturalist gave me as a likely hit. Also, I’d recommend the Seek app (it’s associated with iNaturalist) over iNaturalist app for casual users as it gives quick likely identifications through real-time image matching and does not require engaging the broader iNaturalist community.

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  • Waiting for the gang to leave for their nightly feed. They didn’t leave until after sunset this evening.

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    www.ksat.com

    The Mexican Free-tailed bats have already started heading south for the winter, but we had local press come by to say hi and help spread the word about bat conservation.

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    www.ksat.com

    We’ve finally gone live on the Bracken Cave cams. It took several years to finally get a reliable internet connection close enough to get the equipment connected. Hopefully they’ll stay functional for a while. Recently the bats have been starting their emergence anywhere from 7:30-8:30 pm CDT so 12:30-1:30 am UTC, but they do their own thing and sometimes it can vary by hours from one day to another. The emergence is usually pretty steady and last roughly 3 hours but much is in the dark. You can usually still hear the cool sounds of millions of bat wings in flight. The morning returns are hit and miss as the bats return in spurts anywhere from 5 am to 10am with outliers before and after. The link is to a local TV station covering the cams with useful background.

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    The little guy tries an evasive maneuver against the hawk.

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    Most every night, raptors line up for the bat buffet at Bracken Cave Preserve. The bats pour out of the cave for about 3 hours. he bats exiting is a swarming defense strategy to not getting eaten. When you see a young or sick bat stray from the main cloud of bats, the raptors take advantage of the opportunity. Here is one of several hawks that feeds daily before dusk. After dusk, the owls own the skies here in our little Texas wildlife preserve.

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    Here’s a happy snap from a recent emergence at Bracken Cave Preserve. These are Mexican Free-tailed bats that are part of the maternal colony that summers here in the Texas hill country. We host the colony of approximately 20 million bats from spring to fall. It takes 3+ hours for colony to leave the cave and they’re pretty orderly about it.

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