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ggisky金蟲 (正式寫手)
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allochem怎么解釋?全化學(xué)沉積,什么意思 已有1人參與
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allochem怎么解釋?全化學(xué)沉積,什么意思 [ 來自科研家族 古環(huán)境 ] |
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至尊木蟲 (文壇精英)
安溪鐵觀音@御用品茶師
誰英文好的給翻譯一下 ![]() Allochem is a term introduced by Folk to describe the recognisable 'grains' in carbonate rocks. Any fragment from around ½mm upwards in size may be considered an allochem. Examples would include ooids, peloids, oncolites, pellets, fossil or pre-existing carbonate fragments. Fragments are still termed allochems if they have undergone chemical transformations - for example if an aragonite shell were to dissolve and be later replaced by calcite, the replacement would still be deemed an allochem.[2] The allochems are typically embedded in a matrix of micrite (lime mud) or sparry calcite |

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