Atlas of sediments

Continually under construction!

Scroll down to access image categories. There are about 1000 images so far; more to come.

Trough and planar-tabular crossbeds interpreted as subaqueous dunes in a tidal channel - associated with other indicators of tidal current asymmetry and periodic exposure. Paleoproterozoic Rowatt Fm. Belcher Islands. — Trough and planar-tabular crossbeds interpreted as subaqueous dunes in a tidal channel – associated with other indicators of tidal current asymmetry and periodic exposure. Paleoproterozoic Rowatt Fm. Belcher Islands.

Over the years I have collected 1000s of geological images: Black and white prints from negatives (does anyone remember these?), that morphed to 35mm colour slides, and thence to various digital formats. I have displayed some of the better images here – better in the sense of what they convey scientifically, and their aesthetic appeal. They are organised according to broad environmental categories, and each category includes modern analogues and ancient examples. Each has a brief explanation – more expansive explanations can be found in the linked articles listed below.

The Atlas is a living document – I will add (or delete) images as they come to hand.

Feel free to use these images in your school-university projects, blogs, or whatever takes your fancy, BUT they are NOT to be used for remunerative or commercial gain without permission. I hope students of geology – earth sciences find them useful.

If you would like a higher resolution for an image, get back to me at brian.ricketts@geological-digressions.com

The Atlases, as are all blogs, are a publication. If you use the images please acknowledge their source (it is the polite, and professional thing to do).

Included here are links to methods of description and classification, detailed descriptions in outcrop, fluid flow and the formation of sedimentary structures, lithofacies, concepts in stratigraphy and sequence stratigraphy, and fossil descriptions.

Describing sedimentary rocks

Stratigraphy and sedimentology

Lithofacies

Sequence stratigraphic principles

Paleontology for sedimentologists

Sediments in outcrop

Volcanics in outcrop

Soils and weathering

Thanks. Brian Ricketts