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Microbially induced sedimentary structures recording an ancient ecosystem in the ca. 3.48 billion-year-old Dresser Formation, Pilbara, Western Australia.
A suite of MISS is described from some of the oldest well-preserved sedimentary rocks in the geological record, the early Archean Dresser Formation, Western Australia, which spans almost 3.5 billion years. Expand
Comparative crystal chemistry
Cradle of Life: The Discovery of Earth's Earliest Fossils
One of the greatest mysteries in reconstructing the history of life on Earth has been the apparent absence of fossils dating back more than 500 million years. We have long known that fossils ofExpand
A new window into Early Archean life: Microbial mats in Earth's oldest siliciclastic tidal deposits (3.2 Ga Moodies Group, South Africa)
Newly discovered sedimentary structures produced by ancient microbial mats in Early Archean sandstones of the 3.2 Ga Moodies Group, South Africa, differ fundamentally in appearance and genesis fromExpand
Bulk modulus—volume relationship for cation-anion polyhedra
A bulk modulus—volume relationship is demonstrated for cation coordination polyhedra in a variety of structure types including oxides, silicates, halides, sulfides, phosphides, and carbides: KpExpand
An actualistic perspective into Archean worlds - (cyano-)bacterially induced sedimentary structures in the siliciclastic Nhlazatse Section, 2.9 Ga Pongola Supergroup, South Africa.
A study location is described that displays a unique assemblage with a multitude of exceptionally preserved MISS in the 2.9-Ga-old Pongola Supergroup, South Africa, which is consistent with similar features constructed today by benthic cyanobacteria. Expand
Effects of temperature and pressure on the crystal structure of forsterite
The crystal structure of synthetic forsterite has been studied as a function of temperature and pressure. Crystal structures have been refined from three-dimensiona l diffraction data collected atExpand
Phase E: A high pressure hydrous silicate with unique crystal chemistry
AbstractThe unique cation-disordered crystal structures of two samples of phase E, a non-stoichiometric, hydrous silicate synthesized in a uniaxial, split-sphere, multi-anvil apparatus at conditionsExpand