The alteration of carbonate, caused by organic acid release during hydrocarbon generation,
is usually neglected in carbonate chemistry, since the unaltered carbonate, which may …

Deep‐marine levées are areally extensive features that experience high rates of
sedimentation, making them ideal sites for significant carbon burial and preservation …

The concentrations of redox-sensitive trace elements, such as uranium (U), vanadium (V),
molybdenum (Mo), cobalt (Co), chromium (Cr) and rare earth elements (REE+ Y) were …

A global rise in oxygen levels has been proposed to coincide with the Ediacaran to
Cambrian radiation of animals, yet the precise timing and nature of this change remains …

Carbonate concretions provide unique records of ancient biogeochemical processes in
marine sediments. Typically, they form in organic‐rich mudstones, where a significant …

Abstract Changes in oceanic chemical conditions are frequently invoked as a primary driver
of biodiversification and mass extinction events in Earth history. During the Ediacaran …

The microstructure of HF-etched samples of Early Archaean banded iron formations (BIFs)
and cherts from the> 3.7 by-old Isua Greenstone Belt (southwestern Greenland) was …

Abstract The Spence Shale Lagerstätte is a middle Cambrian (Miaolingian Series; Wuliuan
Stage) fossil deposit in northern Utah and southern Idaho, USA. At present, it is known to …

Abstract The exceptionally preserved Chengjiang Biota (Yunnan, China) is significant for
understanding the rapid development of complex animal-rich ecosystems during the …

Abstract The Chengjiang and Guanshan fossil Lagerstätten of Yunnan represent key fossil
deposits to understand and reconstruct early metazoan evolution. Despite extensive studies …