Ancient stromatolites can provide key insights into the early evolution of life on Earth.
Neoarchean fenestrate stromatolites from the∼ 2520 Ma Upper Nauga Formation …

Cadmium (Cd) isotopes are an emerging proxy for biological controlled metal and nutrient
cycling in the modern oceans, but its potential as a geochemical proxy in ancient …

Exceptionally preserved fossil biotas of the Burgess Shale and a handful of other similar
Cambrian deposits provide rare but critical insights into the early diversification of animals …

Precambrian stromatolites record the origin and occurrence of life. The interpretation and
understanding about these ancient rocks are mostly focused on the studies of morphological …

Laser-Raman imagery is a non-intrusive, non-destructive analytical technique, recently
introduced to Precambrian paleobiology, that can be used to demonstrate a one-to-one …

Isotopic compositions of Mn-carbonate and organic carbon from the same individual
samples and sulfur isotopic compositions of pyrites in the basal Datangpo Formation were …

Carbonate precipitation is a major process in the global carbon cycle. It was recently
proposed that authigenic carbonate (carbonate precipitated in situ at the sediment–water …

Sturtian cap carbonate deposits, previously unknown in South China, are documented in
this study from the base of the Datangpo Formation in the Nanhua Basin (Guizhou …

Describing, characterizing and interpreting the nearly infinite variety of carbonate rocks are
conundrums–intricate and difficult problems having only conjectural answers–that have …

Mudstones and siliceous concretions in the middle Cambrian Conasauga Formation,
northwestern Georgia, contain body and trace fossils showing nonmineralized preservation …