GeoLog

EGU Guest blogger

This guest post was contributed by a scientist, student or a professional in the Earth, planetary or space sciences. The EGU blogs welcome guest contributions, so if you've got a great idea for a post or fancy trying your hand at science communication, please contact the blog editor or the EGU Communications Officer to pitch your idea.

Imaggeo On Monday: A science outpost in midnight sun

December 7, 2020
Imaggeo On Monday: A science outpost in midnight sun
A science outpost in midnight sun . Credit: Jan-Marcus Nasse (distributed via imaggeo.egu.eu)

Photo of the air chemistry observatory of the German Neumayer III Antarctic station during Polar Day 2017. Located in a clean air sector south of the station, the observatory’s main purpose is to record continuous, year-round data records of relevant particulate and gaseous trace components of the troposphere. As one of only few stations located in the very clean troposphere of Antarctica, i ...[Read More]

Imaggeo On Monday: Desert Varnish, Antarctica Style

November 30, 2020
Imaggeo On Monday: Desert Varnish, Antarctica Style
Desert Varnish, Antarctica Style . Credit: Martha Cary Eppes (distributed via imaggeo.egu.eu)

This photograph highlights the oxidized surface of diorite boulders, which fall from the ice at the base of the Mullins Glacier in Beacon Valley, Antarctica when the ice moves directly from a solid state into a gas state, without becoming a liquid in between (a process called sublimation). The particular features (morphology) of the varnish and the desert pavement of this unique environment are re ...[Read More]

Imaggeo On Monday: Great Sand Dunes Sunset

November 23, 2020
Imaggeo On Monday: Great Sand Dunes Sunset
Great Sand Dunes Sunset . Credit: John Counts (distributed via imaggeo.egu.eu)

On a late afternoon in Colorado’s Great Sand Dunes, the sun came out from behind the clouds for a brief moment before it went behind the horizon, illuminating the stoss side of an eroding dune. Sand originated from lacustrine deposits in the San Luis Valley; the Sangre de Cristo mountains, which can be seen in the background, provided a source of some of the sand. This image therefore illust ...[Read More]

Imaggeo On Monday: Erosion and suspension

November 16, 2020
Imaggeo On Monday: Erosion and suspension
Erosion and suspension . Credit: Romain Hemelsdael (distributed via imaggeo.egu.eu)

This image shows bottomset beds from the Kerinitis Gilbert-type delta. The Pleistocene delta uplifts along the active southern margin of the Corinth rift in Greece. A bottomset bed is one where layers of sedimentary material lying along the bottom of a body of water near the point of entry of a stream are subsequently covered by foreset and topset beds in the formation of a delta. Thus in this ima ...[Read More]