Ancient oil points to 'cradle of life'
Australian scientists have discovered the world's oldest oil in rocks that date back 3.2 billion years.3.2 billion year old oil has been found in Archean rock which predates the vast majority of marine sediments. According to Wikipedia, and we all know how worthless that can be, "the majority of Archean rocks which exist are metamorphic and igneous rocks. ... The question of whether or not plate tectonic activity existed in the Archean is an active area of modern geoscientific research."
The find suggests that oil-forming micro-organisms were widespread very early in the Earth's history.
The researchers say that oil-forming bacteria may have been among the earliest inhabitants of our planet and that the sulphur-springs that formed the rocks studied by the researchers may have been the "cradle of life on Earth". ...
The scientists are now looking for molecular fossils that might be present in the oil.
Dr Birger Rasmussen, of the University of Western Australia, and Dr Roger Buick, of the University of Sydney, have published details of their work in the journal Geology.