Baselevel, base-level, and base level
Baselevel is a datum. This is part of the How To…series on Stratigraphy and Sequence Stratigraphy Baselevel is a datum. […]
How to do things
All the Stratigraphies
Preamble: This post outlines the development of formal stratigraphy, focusing on Chronostratigraphy. Entire books have been devoted to this topic; one of the most entertaining and enlightening is Martin Rudwick’s excellent account of the conduct of 19th century gentlemen who argued the case for the Devonian. My account is woefully brief, but there you have […]
A timeline of stratigraphic principles; 1950-77
This is the third of three posts that look briefly at the development of stratigraphic concepts and the people responsible
A timeline of stratigraphic principles; 19th C-1950
This is the second of three posts that look briefly at the development of stratigraphic principles and the characters responsible
A timeline of stratigraphic principles; 15th-18th C
This and the following two posts look briefly at the development of stratigraphic concepts and the characters responsible for them.
Volcanics in outcrop: Pyroclastic fall deposits
A look at volcaniclastics – pyroclastic fall deposits in outcrop This is part of the How To… series on describing
Mineralogy of carbonates: Stromatolite reefs
An example of a Paleoproterozoic stromatolite reef This is part of the How To…series on carbonate rocks Reefs are the
Sedimentary structures: Stromatolites
A look at stromatolites and cryptalgal laminates in outcrop This is part of the How To…series on describing sedimentary rocks
Volcanics in outcrop: Secondary Volcaniclastics
A look at reworked volcaniclastics in outcrop This is part of the How To… series on describing rocks that in
Volcanics in outcrop: Lava flows
A look at lava flows in outcrop This is part of the How To… series on describing rocks – in