Microbial methane from in situ biodegradation of coal and shale: A review and reevaluation of hydrogen and carbon isotope signatures

Earth and Planetary Sciences

• Methane 100%
• Methanogenesis 27%
• Coal 27%
• Signature 18%
• Bed 18%
• Carbon 14 13%
• Microbial Community 13%
• Nuclides 13%
• Hydrogen Isotopes 13%
• In Situ 9%
• Characterization 9%
• Fractionation 9%
• Datum 9%
• Water 9%
• Value 9%
• Oxide 4%
• Oxidation 4%
• Water Interaction 4%
• Isotope Effect 4%
• Structural Basin 4%
• Biodegradation 4%
• Inorganic Carbon 4%
• Methanogens 4%
• Natural Gas 4%
• Investigation 4%
• Environment 4%
• Complexity 4%
• Knowledge 4%
• Document 4%
• Gas 4%
• Show 4%
• Cause 4%
• Stable 4%
• Implication 4%
• Balance 4%
• Input 4%
• Stable Isotope 4%
• Shale Gas 4%

INIS

• methane 100%
• hydrogen isotopes 22%
• carbon isotopes 22%
• coal 22%
• shales 22%
• carbon 13 18%
• communities 13%
• data 9%
• water 9%
• reviews 9%
• values 9%
• reduction 9%
• metabolic pathways 9%
• fractionation 9%
• range 4%
• interactions 4%
• environment 4%
• oxides 4%
• signals 4%
• oxidation 4%
• gases 4%
• carbon dioxide 4%
• carbon 4%
• precursor 4%
• sulfates 4%
• natural gas 4%
• mass balance 4%
• stable isotopes 4%
• coal gas 4%
• shale gas 4%
• isotope effects 4%
• biodegradation 4%
• formation water 4%