Graptolite morphology for sedimentologists
For good reason, Early Paleozoic hemichordate fossils derive their name from the Greek graptos, and the Latin version graptolithus meaning […]
Interpreting ancient environments
Fluid flow: Stokes Law and particle settling
Stokes Law and the terminal or settling velocity of particles in suspension The experiments conducted by Shields and Hjulström examined
Fluid flow: Shields and Hjulström diagrams
Getting sedimentary grains moving in a flowing medium Formation of granular sedimentary layers and many of the bedforms within requires
Coral morphology for sedimentologists
A description of the common skeletal elements of hard, stony corals Hard corals are essential components of nearly all limestones.
A geological life
Preview (opens in a new tab) Not really a CV, more a precis 1969 and about to begin a BSc
The lithofacies of colluvium
Colluvium – the source for most of Earth’s alluvium Colluvium is a sedimentary deposit that occurs as a thin layer
Glossary: Paleontology
Modern and fossil critters, trace fossils, shell morphology Many, but not all the terms included here are associated with articles
The lithofacies of mountain streams
Mountain streams – the ultimate source of sediment for many fluvial systems The idea for writing this brief arose whilst
Debris flow lithofacies
A post on debris flows, mud flows, hyperconcentrated flows, mud torrents, gravel flows slurry flows, lahars. General considerations – the
Beach and shoreface gravels
Pebble, cobble and boulder beaches and their shoreface equivalents. The swimmability of a beach, if it was a popularity contest,