Common brachiopod shell characteristics to help identification Tray upon tray of brachiopods, molluscs, trilobites, and
Our knowledge of how ammonoids and nautiloids functioned is based almost entirely on a single
Some basic gastropod morphology to assist sedimentological interpretations This is a companion post to bivalve
Some basic bivalve morphology to assist sedimentological interpretations Ok, you’re not a paleontologist but during
The term neomorphism is reserved for recrystallization of a mineral and its polymorphs to new
Outcrop expression of maximum regressive, maximum flooding, and ravinement surfaces Six stratigraphic surfaces define the
Outcrop expression of subaerial unconformities and regressive surfaces of marine erosion Six stratigraphic surfaces define
Pyroclastic surges, are dilute, ground-hugging turbulent flows of hot, juvenile volcanic particles and a fluid
I have been under the (mistaken) impression that accretionary aggregates, including accretionary lapilli, are occasional
Block and ash flows – a hot pyroclastic flows that transport big chunks of rock
