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#pillowbasalt — Public Fediverse posts

Live and recent posts from across the Fediverse tagged #pillowbasalt, aggregated by home.social.

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  1. Bill Minarik @silicatefondue ·

    @Anthro @Ceedave The 4.3 Ga age is from coupled Nd-Sm systems (short and long lived); the mafic rocks do not have zircons. The younger age is from zircons in cross-cutting felsic units. This is the work of Jonathan O'Neil (now at ) mcgillnews.mcgill.ca/s/1762/ne

    en.wikipedia.org/wiki/Nuvvuagi

    Some of the rind remains and is compositionally distinct. Recent work has used triple oxygen to constrain seawater chemistry (sciencedirect.com/science/arti)

    #uottawa #hadean #mcgiluniversity #pillowbasalt
  2. Bill Minarik @[email protected] ·

    @Anthro @Ceedave The 4.3 Ga age is from coupled Nd-Sm systems (short and long lived); the mafic rocks do not have zircons. The younger age is from zircons in cross-cutting felsic units. This is the work of Jonathan O'Neil (now at #uottawa) mcgillnews.mcgill.ca/s/1762/ne

    en.wikipedia.org/wiki/Nuvvuagi

    Some of the rind remains and is compositionally distinct. Recent work has used triple oxygen to constrain seawater chemistry (sciencedirect.com/science/arti)
    #Hadean #McGilUniversity #PillowBasalt

    #uottawa #hadean #mcgiluniversity #pillowbasalt
  3. Chris White @[email protected] ·

    @allochthonous @silicatefondue @geo_garver

    Fabulous #pillowBasalt image, and I’m happy to have visited your website. Please keep the cross cutting relationship animation up, I’ll refer my #EarthScience class at #UMassBoston to it. Super!

    #pillowbasalt #earthscience #umassboston
  4. Chris White @[email protected] ·

    @allochthonous @silicatefondue @geo_garver

    Fabulous #pillowBasalt image, and I’m happy to have visited your website. Please keep the cross cutting relationship animation up, I’ll refer my #EarthScience class at #UMassBoston to it. Super!

    #pillowbasalt #earthscience #umassboston
  5. Bill Minarik @silicatefondue ·

    Compare the Nuvvuagittuq Greenstone Belt pillows with those from the 3.5 billion year old Barberton Greenstone Belt, South Africa, visited by @allochthonous

    all-geo.org/highlyallochthonou

    or the pillows of @geo_garver from the 57 Ma Resurrection Peninsula Ophiolite, Alaska.
    fosstodon.org/@geo_garver@mast 2/2

    #pillowbasalt
  6. Bill Minarik @[email protected] ·

    Compare the Nuvvuagittuq Greenstone Belt pillows with those from the 3.5 billion year old Barberton Greenstone Belt, South Africa, visited by @allochthonous

    all-geo.org/highlyallochthonou

    or the pillows of @geo_garver from the 57 Ma Resurrection Peninsula Ophiolite, Alaska.
    fosstodon.org/@geo_garver@mast #PillowBasalt 2/2

    #pillowbasalt
  7. Bill Minarik @silicatefondue ·

    The pillow rinds have preferentially weathered, outlining the basalt pillows formed at least 3.75 and perhaps as long ago as 4.3 billion years ago. Now metamorphosed to amphibolite grade. In the Ujaraaluk unit of the Nuvvuagittuq Greenstone Belt, near , northern . University 1/2

    #inukjuak #quebec #mcgill #earthsystemscience #pillowbasalt #hadean
  8. Bill Minarik @[email protected] ·

    The pillow rinds have preferentially weathered, outlining the basalt pillows formed at least 3.75 and perhaps as long ago as 4.3 billion years ago. Now metamorphosed to amphibolite grade. In the Ujaraaluk unit of the Nuvvuagittuq Greenstone Belt, near #Inukjuak, northern #Quebec. #McGill University #EarthSystemScience #PillowBasalt #Hadean 1/2

    #inukjuak #quebec #mcgill #earthsystemscience #pillowbasalt #hadean