Brocks, Jochen2015-12-101872-9533http://hdl.handle.net/1885/68939Archean shales from the Pilbara in Western Australia contain biomarkers that have been interpreted as evidence for the existence of cyanobacteria and eukaryotes 2.7 billion years (Ga) ago, with far reaching implications for the evolution of Earth's earlyKeywords: alkane; Archean; aromatic hydrocarbon; biomarker; biosphere; cyanobacterium; eukaryote; hydrocarbon resource; model test; paleoenvironment; provenance; shale; source rock; spatial distribution; thermal maturity; Australia; Pilbara; Western Australia; Cyan201110.1016/j.gca.2011.03.0142016-02-24