近日，在文献中看到oxygen-restricted biofacies (ORB) ，很费解，不知指的是什么，请各位大侠指点迷津。 原句：the fossil record of the Kimmeridge Clay（and other black shale faunas of the British Jurassic) has been used to establish a finely-partioned, oxygen-restricted biofacies (ORB) scheme .
Chemical Geology : Palaeoenvironmental controls on the uranium ... - [ 翻译此页 ]For example, the oxygen-restricted biofacies (ORB) scheme utilises a species diversity gradient as an indication of the oxygen content of bottom waters ... linkinghub.elsevier.com/retrieve/pii/S0009254100003764
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