作者: Wolfgang Oschmann
DOI: 10.1007/978-3-662-04036-2_16
关键词: Bacteria 、 Chemistry 、 Environmental chemistry 、 Organic matter 、 Anoxic waters 、 Pyrite 、 Cold seep 、 Metabolic waste 、 Metabolic pathway 、 Anaerobic exercise
摘要: Black shales, in general, form under low oxic to anoxic conditions, where microbes have evolved a variety of metabolic pathways. Modern oxygen-depleted environments typically contain anaerobic heterotrophic bacteria, aerobic chemolithoautotrophic bacteria (which partly live mutualistic relationship with certain metazoa) and photoautotrophic bacteria. These mainly degrade but also organic matter. Their pathways their preservational potential the fossil record are discussed here. In many cases only waste products, e.g. pyrite, bacterial derived biomarkers preserved. Relicts microbials mats occur as rare exceptions.