GeoLog

Regular Features

Imaggeo on Mondays: A window to ice and fire

Imaggeo on Mondays: A window to ice and fire

Brown Bluff is a basalt tuya located on the Tabarin Peninsula of northern Antarctica. This site supports a breeding colony of about 20,000 pairs of adelie penguins and about 550 pairs of gentoo penguins. Geologically speaking, Brown Bluff is simply fascinating. The towering bluffs were the result of an explosive volcanic eruption under ice. Large …[Read More]

Imaggeo on Mondays: Azerbaijan Mud Volcano

Imaggeo on Mondays: Azerbaijan Mud Volcano

Azerbaijan one of the best places in the world to find mud volcanoes, because of the number that are in the country. Mud volcanoes are broadly spread across Azerbaijan. About 350 of approximate 800 mud volcanoes in the world are found in the Azerbaijani Republic.   This includes both underground and submarine mud volcanoes, which …[Read More]

Imaggeo on Mondays: Red triassic sandstone

Imaggeo on Mondays: Red triassic sandstone

As child growing up on the south coast of Devon in the UK, I never really realised that our beaches were unusual. A glorious, glowing orange-red colour, the cliffs that you can see in this photograph by Sarah Weick produced similarly red sand beaches and warm ochre soils. The bright colour is the result of …[Read More]

Imaggeo On Mondays: Psychedelic Foraminifera

Imaggeo On Mondays: Psychedelic Foraminifera

This is a transmitted light microscope image of a thin section – a 50-micron thick sliver of rock. This sample was collected from Jebel Hafit, a mountain which straddles the United Arab Emirates and Oman border. Jebel Hafit is approximately 900 m high and is made up of Eocene to Miocene age carbonate rocks which …[Read More]

Imaggeo On Mondays: Sulphur volcano

Imaggeo On Mondays: Sulphur volcano

This photograph was taken in 2012 on a guided tour to Whakaari/White Island, an active volcano 50 km off the east coast of the North Island of New Zealand. The volcano lies on the northern end of the Taupo Volcanic zone and has possibly been active for the past 150,000 years. How dangerous this island …[Read More]

Imaggeo on Mondays: The mirror of the volcano

Imaggeo on Mondays: The mirror of the volcano

Lascar volcano is located in the Antofagasta Region of Chile. This stratovolcano (a conical volcano built up over time through successive eruptions of lava, tephra and ash) of the Central Volcanic Zone of the Andes is the most active volcano of the region, with a height of 5.592 m (18,34 ft). The last phase of …[Read More]