For example, the fossils contain significant traces of a low-temperature flavor of the mineral dolomite, an almost certain fingerprint of microbial activity. Allwood says these new fossils may ...

The fossils allowed the scientists to confirm the exact origin of the dolomite. "These quarries, lost over a century ago, are located in Redueña in the province of Madrid," researcher David M.

The unusual fossil, described by paleontologist Olivier Lambert and colleagues, is encased in a chunk of exceptionally-hard dolomite. The stone is so resilient, in fact, that preparing the rock ...

The fossils are 3.4 billion years old ... They also contain a rock called low-temperature dolomite, which is often laid down in the presence of microorganisms. Chemical traces suggested the ...

Conditions were ideal for fossil formation. Primitive animals such as corals secreted hard shells. Many were preserved in the dolomite which forms our bedrock. Understand that the bedrock in our ...

"As these systems are very limited in space, there is an explanation gap for geologists for the widespread presence of fossil dolomite," explains Dr. Stefan Krause, Geomicrobiologist at GEOMAR ...

"Here the geological formation of the dolomite (a sedimentary rock similar to limestone) known as Castrojimeno presents characteristic features, such as a layer containing fossils that do not ...