@TheHistoryGuy07 @AiG You misunderstand at least two concepts there. First, "fossil" does not always mean petrified. Newer fossils - from tens or hundreds of thousands of years ago - are still comprised of organic matter. Second, *all* fossils *could* co
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@TomKirby169 @SamLowryEsq Try this one https://t.co/uYCJb6o2ZU
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@LJElkins @lithospheric @theIUGS It seems that the more common recent trend is to reserve acidic and basic for descriptions of reactivity and to use terms like silicic, felsic, or mafic to describe the composition of rocks. https://t.co/WKs1DGd0cP
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RT @Helen_E_MC: Ok, this may be my fave new bit of info from the #EleCup21 so far https://t.co/o1JedZMKBX