Depositional systems and systems tracts
Depositional systems and systems tracts are central to the construction of sequence stratigraphic profiles. Stand back and observe an active, […]
In the field
Stratigraphic condensation – condensed sections
Condensed sections record multifarious interactions of physical, biological, and geochemical processes played out over long time spans, all condensed into
Stratigraphic lapout geometry
This post about lapouts (onlap, toplap, downlap, offlap, truncation) is a companion to Clinoforms and clinothems An important part
Clinoforms and clinothems
Earth’s surface is a time plane. It is a plane of deposition and erosion, of chemical precipitation and dissolution, domicile to countless
Stratigraphic trends and stacking patterns
Stratigraphic trends in outcrop and core, and the role they play in identifying parasequence stacking patterns. Recognition of stratigraphic trends,
Shorelines and shoreline trajectories
A brief look at identifying shoreline trajectories in stratigraphic successions. This post is part of the How To…series on Stratigraphy
Parasequences
Parasequences are the building blocks of shallow marine systems tracts. The stratigraphy of ancient, shallow marine deposits is commonly
How to do things, In the field, Interpreting ancient environments
Sequence stratigraphic surfaces
A brief look at the key stratigraphic surfaces that help us construct sequence stratigraphic models. Look at any pile of
Stratigraphic cycles: What are they?
Stratigraphic repetition, stratigraphic cycles, and stratigraphic trends We know with reasonable certainty that the sun will rise tomorrow. We know
Autogenic or allogenic dynamics in stratigraphy?
Or why the distinction between allogenic and autogenic dynamics is not as straight forward as we might think! Stratigraphic analysis