http://greengabbro.net/2005/05/13/friday-rock-blogging-evaporites/ rock out to the apparatus Sat, 22 Nov 2008 19:13:53 +0000 http://wordpress.org/?v=2.6.3 http://greengabbro.net/2005/05/13/friday-rock-blogging-evaporites/#comment-30890 brandon blackmon Thu, 10 Apr 2008 21:16:19 +0000 http://greengabbro.net/2005/05/13/friday-rock-blogging-evaporites/#comment-30890 commonest is not a word. should be most common. good luck in the future with your crusty gunk.... commonest is not a word. should be most common. good luck in the future with your crusty gunk….

]]> http://greengabbro.net/2005/05/13/friday-rock-blogging-evaporites/#comment-2075 Friday Rock Blogging: Caliche Fri, 27 Jan 2006 18:04:00 +0000 http://greengabbro.net/2005/05/13/friday-rock-blogging-evaporites/#comment-2075 […] I’ve previously rockblogged about the crusty, water-soluble minerals known as evaporites. But you don’t need open pans or puddles to produce this kind of mineral precipitate - drying out shallow soil will work just as well*. When this happens, dissolved calcium carbonates (et al.) will coat all kinds of surfaces and infiltrate all kinds of voids within the soil, from pebbles (shown here) and fractures to partly buried tree trunks. Often, repeated cycles of wetting and drying will produce a layer of evaporated gunk that cements the soil grains together just a few inches below the surface; this layer is commonly known as hardpan, or caliche. The crusty gunk itself is also called caliche; though some people reserve the term for calcium carbonates, others don’t care. Calcite is the commonest precipitate anyway. Then there are the people in India who call it kankar, which just makes me giggle. […] […] I’ve previously rockblogged about the crusty, water-soluble minerals known as evaporites. But you don’t need open pans or puddles to produce this kind of mineral precipitate - drying out shallow soil will work just as well*. When this happens, dissolved calcium carbonates (et al.) will coat all kinds of surfaces and infiltrate all kinds of voids within the soil, from pebbles (shown here) and fractures to partly buried tree trunks. Often, repeated cycles of wetting and drying will produce a layer of evaporated gunk that cements the soil grains together just a few inches below the surface; this layer is commonly known as hardpan, or caliche. The crusty gunk itself is also called caliche; though some people reserve the term for calcium carbonates, others don’t care. Calcite is the commonest precipitate anyway. Then there are the people in India who call it kankar, which just makes me giggle. […]

]]> http://greengabbro.net/2005/05/13/friday-rock-blogging-evaporites/#comment-2074 Sister Earth Fri, 13 May 2005 19:02:00 +0000 http://greengabbro.net/2005/05/13/friday-rock-blogging-evaporites/#comment-2074 <strong>Friday Nature Blogging: Alders Over Lake</strong> And do check out Greengabbro’s Friday Rock Blogging and Dope on the Slope’s Thursday Invertebrate Blogging. Friday Nature Blogging: Alders Over Lake
And do check out Greengabbro’s Friday Rock Blogging and Dope on the Slope’s Thursday Invertebrate Blogging.

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