GeoLog

National Park

Imaggeo on Mondays: Fairy chimneys in Love Valley

Imaggeo on Mondays: Fairy chimneys in Love Valley

Every year tourists from around the world flock to Love Valley in Göreme National Park in the Cappadocia region of central Turkey to marvel at the region’s peculiarly pointy geological features. These cone-shaped formations, known as ‘fairy chimneys’ or hoodoos, dominate the park’s skyline, with some rocky spires extending up to 40 metres towards the sky.

While the name ‘fairy chimney’ suggests mythical origins, these rocks began to take shape millions of years ago, when many active volcanoes dominated the region. “The deposits of [volcanic] ash, lava and basalt laid the foundations for today’s landscape,’ commented Alessandro Demarchi in the photo’s description, who captured the stunning photograph featured today. The volcanic material consolidated into a soft rock known as ‘tuff.’ Then over the years, natural weathering forces like wind and water eroded weaker parts of the rock away, leaving behind the pinnacles we see now.

Around the 4th century, during the reign of the Roman empire, many Christian pilgrims traveled to Cappodocia to flee persecution. They built their new life into the region’s rocks, carving out a network of homes and churches from the towers of tuff. If you look closely at background of the image, you can even spot remnants of their handiwork.

The region was named a UNESCO World Heritage Site in 1985, and today you can enjoy the extraordinary geological formations, as well as their cultural history, either from the ground or up in the air through hot air balloon tours.

Imaggeo is the EGU’s online open access geosciences image repository. All geoscientists (and others) can submit their photographs and videos to this repository and, since it is open access, these images can be used for free by scientists for their presentations or publications, by educators and the general public, and some images can even be used freely for commercial purposes. Photographers also retain full rights of use, as Imaggeo images are licensed and distributed by the EGU under a Creative Commons licence. Submit your photos at http://imaggeo.egu.eu/upload/.

Imaggeo on Mondays: Corno Grande, tallest peak of the Apennines

Imaggeo on Mondays: Corno Grande, tallest peak of the Apennines

In the middle of the Apennines lays the Gran Sasso d’Italia mountain chain, a picturesque collection of mountains situated in the heart of Italy.

Featured here is one of the chain’s peaks, called the Corno Grande, meaning ‘Big Horn,’ coloured with a faint reddish light of a late-winter sunset. Sitting at 2,912 metres, this summit is easily the highest mountain in the Apennines.

The areas surrounding Corno Grande is enclosed in the Gran Sasso e Monti della Laga National Park, located in the hinterland of Italy’s Abruzzo region. The park, established in 1991, encompasses 2,015 square kilometres, making it one of the largest natural reserves in Europe.

Moreover, from an ecological standpoint, the region is one of the most biologically diverse areas in Europe, with more than 2,000 plant species, many of which can only be found in the park, and many rare animals.

The landscape that surrounds Corno Grande still shows traces of glacial erosion from the Quaternary Period, which began 2.6 million years ago. The region’s smooth highlands and U-shaped valleys are engravings of the slow glacial processes that occurred on these lands. The Corno Grande is even still host to a glacier today, as you can find the Calderone glacier, Western Europe’s southernmost glacier, beneath the mountain’s peak.

Sketch of the geodynamic setting of the Gran Sasso (Credit: Cardello and Doglioni, 2015)

The Apennine Mountains were built by a paradoxical geologic process, sometimes referred to as ‘syn-orogenic extension,’ where thickened crust spreads out while, at the same time, a belt of Earth’s crust is compressed, forming a chain of mountains. In the case of the Apennines, compression took place east of the range while extension occurred to the west.

“This synchronous processes of such different motions in the convergent belts is still an issue that must be unraveled for a better understanding of the mountain ridge formation,” said Alex Righetti, a PhD student studying marine geology at the Faculty of Sciences of the University of Lisbon, in Portugal, who captured this shot.

By Olivia Trani, EGU Communications Officer and Alex Righetti, FCUL

Imaggeo is the EGU’s online open access geosciences image repository. All geoscientists (and others) can submit their photographs and videos to this repository and, since it is open access, these images can be used for free by scientists for their presentations or publications, by educators and the general public, and some images can even be used freely for commercial purposes. Photographers also retain full rights of use, as Imaggeo images are licensed and distributed by the EGU under a Creative Commons licence. Submit your photos at http://imaggeo.egu.eu/upload/.