The sulfur biogeochemical cycle integrates the metabolic activity of multiple microbial
pathways (eg, sulfate reduction, disproportionation, and sulfide oxidation) along with abiotic …

Abstract The Ediacaran-Cambrian transition, which incorporates the radiation of animals,
lacks a robust global temporal and spatial framework, resulting in major uncertainty in the …

Water plays a critical role in erosion and sediment transport and this relationship is most
evident in the hyperarid Atacama Desert of Northern Chile, a region characterized by …

Two distinct evolutionary pulses, represented by the Vendian Ediacaran fauna and
Cambrian small shelly faunas, are generally thought to characterize the emergence of …

Reefs containing abundant calcified metazoans occur at several stratigraphic levels within
carbonate platforms of the terminal Proterozoic Nama Group, central and southern Namibia …

The oceans at the start of the Neoproterozoic Era (1,000–541 million years ago, Ma) were
dominantly anoxic, but may have become progressively oxygenated, coincident with the rise …

When each of the Avalon-, Ediacara-, and Nama-type fossil assemblages are tracked
through geological time, there appear to be changes in species composition and diversity …

ABSTRACT The Longmen Shan Foreland Basin developed as a flexural foredeep during
the Late Triassic Indosinian orogeny, spanning the time period c. 227–206 Ma. The basin fill …

Drawing on a combination of modern occurrences and likely ancient counterparts, this atlas
is a treatise of mat-related sedimentary features that one may expect to see in ancient …

The first appearance of skeletal metazoans in the late Ediacaran (∼ 550 million years ago;
Ma) has been linked to the widespread development of oxygenated oceanic conditions, but …