GeoLog

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GeoSciences Column: Don’t throw out that diary – medieval journals reveal the secret of lightning

December 8, 2017
GeoSciences Column: Don’t throw out that diary – medieval journals reveal the secret of lightning
‘Lightning Below the Summit’, 36 Views of Mt Fuji, Hokusai c. 1830 (Wikimedia Commons)

When 17th century Japanese princess Shinanomiya Tsuneko took note of an afternoon storm in her diary one humid Kyoto summer, she could not have imagined her observations would one day help resolve a longstanding scientific conundrum. Statistical analysis of her journals has revealed a link between lightning strikes and the solar wind – proving that your teenage diary could contain good scien ...[Read More]

Imaggeo on Mondays: Autumnal Larch

December 4, 2017
Imaggeo on Mondays: Autumnal Larch
Leaf colouration of larch trees . Credit: Yann Vitasse (distributed via imaggeo.egu.eu).

For a fantastically picturesque train ride, consider travelling by rail between Lanquart and Davos (in Switzerland). You’ll be rewarded with stunning Alpine views, especially in autumn when the Larches, surrounded by Spruces, turn yellow and cast pretty reflections in the waters of the mountain lakes. Seen here is Schwartzsee, located only a few meters from ‘Davos Laret’ train station. Imaggeo is ...[Read More]

Imaggeo on Mondays: Angular unconformity

November 27, 2017
Imaggeo on Mondays: Angular unconformity
Angular unconformity. Credit: Daniele Penna (distributed via imaggeo.egu.eu)

It is not unusual to observe abrupt contacts between two, seemingly, contiguous rock layers, such as the one featured in today’s featured image. This type of contact is called an unconformity and marks two very distinct times periods, where the rocks formed under very different conditions. Telheiro Beach is located at the western tip of the Algarve; Portugal’s southernmost mainland region and the ...[Read More]