The gradual discovery that late Neoproterozoic ice sheets extended to sea level near the
equator poses a palaeoenvironmental conundrum. Was the Earth's orbital obliquity> …

The mineralogy of terrestrial planets evolves as a consequence of a range of physical,
chemical, and biological processes. In pre-stellar molecular clouds, widely dispersed …

Glacial deposits of Sturtian and Marinoan age occur in the well-studied Neoproterozoic
successions of northern Namibia, South Australia, and northwestern Canada. In all three …

Sr and C isotopic data obtained on stratigraphic suites of well-preserved marine limestone
from Siberia, Namibia, Canada, Svalbard and East Greenland provide a relatively detailed …

Dropstone-bearing glaciomarine sedimentary rocks of the Ghaub Formation within
metamorphosed Neoproterozoic basinal strata (Swakop Group) in central Namibia contain …

A first study of REE+ Y distribution in a variety of Neoproterozoic (Cryogenian and
Ediacaran) carbonates from different settings in the Saldania, Gariep, Damara and West …

The limited availability and low resolution of biostratigraphic and radiometric data in the
Precambrian necessitate using marine chemostratigraphy to correlate and integrate the …

Detailed correlations of ancient glacial deposits, based on temporal records of carbon and
strontium isotopes in seawater, indicate four (and perhaps five) discrete ice ages in the …

Abstract The Chemical Index of Alteration (CIA) is the most accepted of available weathering
indices. Past conditions of physical and chemical weathering can be reliably inferred if …

A thick Neoproterozoic carbonate and glaciogenic succession of the southern Congo craton
has yielded δ13C and 87Sr/86Sr records through the later Cryogenian (ca. 750–600 Ma) …