GeoLog

Geochemistry, Mineralogy, Petrology & Volcanology

Imaggeo on Mondays: A fold belt within a grain

May 25, 2015
Imaggeo on Mondays: A fold belt within a grain
A fold belt within a grain. Credit: Sina Marti (distributed via imaggeo.egu.eu)

Tiny crinkly folds form the main basis of today’s Imaggeo on Mondays. Folding can occur on a number of scales; studying folds at all scales can reveal critical information about how rocks behave when they are squeeze and pinched, as described by Sina Marti, from the University of Basel. Although many geoscientists have seen such fold structures many times before, if you noticed the scale bar in th ...[Read More]

GeoTalk: How hydrothermal gases change soil biology

May 15, 2015

The biosphere is an incredible thing – whether you’re looking at it through the eye of a satellite and admiring the Amazon’s vast green landscape, or looking at Earth’s surface much more closely and watching the life that blossoms on scales the naked eye might never see, you are sure to be inspired. Geochemist, Antonina Lisa Gagliano has been working on the slopes of Pantelleria Island in an effor ...[Read More]

Iceland’s Bárðarbunga-Holuhraun: a remarkable volcanic eruption

May 8, 2015
Iceland’s Bárðarbunga-Holuhraun: a remarkable volcanic eruption
Heiturpottur. Credit: Morgan Jones (distributed via imaggeo.egu.eu)

A six month long eruption accompanied by caldera subsidence and huge amounts of emitted gasses and extruded lavas; there is no doubt that the eruption of the Icelandic volcano in late 2014 and early 2015 was truly remarkable. In a press conference, (you can live stream it here), which took place during the recent EGU General Assembly, scientists reported on the latest from the volcano. Seismic act ...[Read More]

Imaggeo on Mondays: Finger Rock

April 27, 2015
Finger
Finger Rock. Credit: Dmitry Demezhko (distributed via imaggeo.egu.eu)

Standing proud amongst the calm waters of Golovnina Bay is ‘The Devil’s Finger’, a sea stack composed of volcanic sediments. Located on the Pacific coast of Kunashir Island -which is controlled by Russia but claimed by Japan – the stack is testament to the volcanic nature of the region. The island itself is formed of four active volcanoes which are joined together by low-lying geothermally active ...[Read More]