Category: The (really) Ancient Earth

September 12, 2022

Laminated lower plane bed and upper plane bed sandstone lithofacies Use this link to read

August 24, 2022

Lenticular bedding, flaser bedding, and interference ripples Most crossbeds and their associated bedforms cannot be

May 31, 2022

Some basic gastropod morphology to assist sedimentological interpretations This is a companion post to bivalve

May 14, 2022

The utility of lithic grains as provenance indicators The composition of terrigenous sandstone is usually

November 12, 2021

19th century experiments that helped quantify the nature of fluid flow, surface waves, and bedforms.

June 20, 2021

Allochthonous terranes, suspect terranes, exotic terranes. In 1972 James Helwig introduced the concept of orogenic

May 13, 2021

Companion glossaries Sedimentary facies and processes Sedimentary structures Sedimentary basins and tectonics Glossary of sequence

May 13, 2021

Companion glossaries Ablation: The removal of ice and snow by melting, evaporation, wind erosion, sublimation

January 30, 2021

The rationale for classification of sedimentary basins The formulation of plate tectonic theory in the

January 19, 2021

The mechanical behaviour, or rheology of the lithosphere. Sedimentary basins are regions of long-term