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Herein you will find posts on Earth and planetary sciences, especially geology, the science of climate change (rather than the hyperbole),  Art and Science, Scicomm and other digressions.  Post categories-topics are linked to the navigation bar, and also the Compendium of Posts, or just head to the latest additions listed below. Peruse the Atlas for images of different geological environments and processes, modern and ancient.


The How to…  provides outlines of method and theory for some of the basic tasks that geologists undertake in the field and lab. They are directed primarily at beginning and undergraduate geology students and anyone else wanting a reminder or primer.

Latest Posts

How to… The mineralogy of sandstones: matrix and cement

How to…The mineralogy of sandstones: Quartz grains

How to…The mineralogy of sandstones: Feldspar grains

How to…The mineralogy of sandstones: lithic fragments

How to… Classification of sandstones

How to… Some controls on grain size distributions

How to… Describing sedimentary rocks – some basics

How to… Grain size of clastic rocks and sediments

How to… Analysis of sediment grain size

How to… The kinematics of deformed rock

How to…Cleavage and cleavage-bedding intersections 

How to… Stereographic projection – poles to planes

How to… Using S and Z folds to decipher large-scale structures

How to… Folded rock; some terminology

Atlas of modern coral reefs

How to… The Rule of Vs in geological mapping

How to… Measuring a stratigraphic section

How to… The hydraulics of sedimentation: Flow Regime

How to… Crossbedding – some common terminology

How to … measure and graphicall represent paleocurrents.  Three more posts in the How to.. series dealing with stratigraphy and paleocurrents.

How to… Measure dip and strike  A How to… series for field and lab tasks, directed mainly at beginning geology students

Io; Zeus’s fancy and Jupiter’s moon – an Update

Beneath the ice; Greenland’s bedrock

Marie Tharp and the mid-Atlantic rift; a prelude to Plate Tectonics


Atlas of soils and weathering


Beach microcosms and river analogues


Difficulty breathing: the Atacama salt lakes


Witness to an impact


Crossing the harbour bar


Bits of North America that were left behind


There are more exoplanets than stars in the universe


Tidal waves; prisoners of celestial forces

Atlas of Unconformities


The Moine Thrust:An idea that unravelled mountains


Atlas of the Dalradian from Scotland and Ireland


The Pink and White Terraces, Magic Lanterns, and 19th century narratives


Crème brûlée, jelly sandwich, and banana split; the manger a trois of layered earth models


A chance encounter with James Ussher, circa 1650


Bishop James Ussher and the beginning of everything


An Atlas of sediments and sedimentary structures

So far 950 images illustrate beach, tidal flat, estuary, lagoon, aeolian, alluvial fan, fluvial deposits, deltas, fan deltas, the shelf, the slope – shelfbreak gullies, submarine canyons, sediment texture and fabric, synsedimentary deformation, and syntectonic sedimentation, stromatolites, volcanic rocks, Cool-water carbonates, and many more.


Submarine mud flows and landslides modified Kaikoura canyon during the November 2016 M7.8 earthquake


Jet Streams


Deciphering a volcano’s moods; predicting volcanic eruptions


In the field: Windows into two billion year-old rocks


Rip currents – you have been warned


Polar bears do not live in Antarctica, there are no Penguins in the Arctic; the asymmetry of the poles


Class 5: The Toba eruption – how a super volcano almost stopped humanity in its tracks












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