Graded-bedding lithofacies
Historical context The name graded bedding was coined by E. Bailey in 1930 to describe the gradual, vertical change in […]
Evolving tempestite lithofacies models
This is the third of three posts on tempestites: The recognition of hummocky crossbeds by Harms et al., (1975) was
Storm surges and tempestites
This is the second of three posts on tempestites: 1 Storms and storm surges: Forces at play 3 Evolving tempestite
Storms and storm surges: Forces at play
This is the first of three posts on tempestites: 2 Storm surges and tempestites 3 Evolving tempestite lithofacies models
How do we identify a basin margin?
Some thoughts on how we record and identify sedimentary basins margins. Any discussion about depositional systems and sedimentary basins will
The three pycnals: hypo-, homo-, & hyper
The delivery of sediment to sedimentary basins It is estimated that 95% of the terrigenous sediment load supplied to sedimentary
Graptolite morphology for sedimentologists
For good reason, Early Paleozoic hemichordate fossils derive their name from the Greek graptos, and the Latin version graptolithus meaning
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.