Imaggeo

Imaggeo On Monday: Desert Varnish, Antarctica Style

Martha Cary Eppes November 30, 2020

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

John Counts November 23, 2020

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

Romain Hemelsdael November 16, 2020

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]

Imaggeo On Monday: Micro and Nano composition

Liubov Kuleshova November 9, 2020

Micro and Nano compositions . Credit: Liubov Kuleshova (distributed via imaggeo.egu.eu)

This image shows benthic foraminifera species of Favulina hexagona (Williamson, 1848) together with nanofossils enclosed inside the shell hexagons. This modern foraminifera species was found in the sediment core retrieved from the western slope of the Rio Grande Rise (western South Atlantic). Description by Liubov Kuleshova, after the description on imaggeo.egu.eu. Imaggeo is the EGU ...[Read More]