sediments

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 Mondays: The odd ‘living’ rocks

Laura Roberts-Artal October 17, 2016

Huepac stromatolites . Credit: Hugo Beraldi (distributed via imaggeo.egu.eu)

Microbialites – structures which result from the interaction between microbes and sediments – have existed in the rock record since 3700 Ma ago until the present day. The presence of microbes in environments where mineral precipitation is prevalent, usually derives in the development of such chemical sedimentary structures. This can take place in marine, non-marine, and subterranean environm ...[Read More]

Geoscience hot topics – Part II: the Earth as it is now and what its future looks like

Laura Roberts-Artal December 11, 2015

The Waxing Earth from a Geostationary Perspective. Credit: Maximilian Reuter (distributed via imaggeo.egu.eu)

What are the most interesting, cutting-edge and compelling research topics within the scientific areas represented in the EGU divisions? Ground-breaking and innovative research features yearly at our annual General Assembly, but what are the overarching ideas and big research questions that still remain unanswered? We spoke to some of our division presidents and canvased their thoughts on what the ...[Read More]

Imaggeo on Mondays: A voyage through scales – The Badlands National Park, South Dakota.

Laura Roberts-Artal June 22, 2015

Badlands national park, South Dakota, USA. Credit: Iain Willis (distributed via imaggeo.egu.eu)

Layer upon layer of sand, clay and silt, cemented together over time to form the sedimentary units of the Badlands National Park in South Dakota, USA. The sediments, delivered by rivers and streams that criss-crossed the landscape, accumulated over a period of millions of years, ranging from the late Cretaceous Period (67 to 75 million years ago) throughout to the Oligocene Epoch (26 to 34 million ...[Read More]