EGU Guest blogger

In Gobustan, Azerbaïdjan, gases such as methane or carbon dioxide are emitted in the underground. They lower the density of the overlying sediments which are pushed upwards by buoyancy. Fingering instabilities occur, where more mobile and lighter sediments form vents and mud volcanoes with upwards moving material. Many small scale cones are deposited when the conduits reach the surface, depositing ...[Read More]

Scientists have combed through the mysteries offered by this ridge for a long time. This is an aerial image of the linear north-south ridge in South-Eastern Utah. First mapped by modern geoscientists in the late 19th century, the ridge is home to numerous Puebloan cliff dwellings and petroglyphs. It is a National Natural landmark and home to the only fossils of a mammal-sized cynodonts (tritylodon ...[Read More]

This picture was taken from the N.B. Palmer ice breaker during the PIPERS expedition in the austral winter of 2017. Two researchers and a marine technician were drilling cores in the sea ice of the Ross Sea. The ice was too thin and started to crack (see the fault in the background), so the team had to drill from the basket. Photo by Célia Julia Sapart, description from imaggeo.egu.eu.   Imag ...[Read More]

The drying out of the soil leads to the hazard of flash floods in the wadis of the Dead Sea Valley during sparse but strong rain events. During longer precipitation-free periods and extreme low relative humidity, driven by mesoscale wind, the soil crust ultimately tends to break into piece. Photo by Stefan Schmitt, description from imaggeo.egu.eu.   Imaggeo is the EGU’s online open access geo ...[Read More]