Cyclones, Sea and Sampling Sediments IV: The Sights and Sediments of Sydney

Brooke Johnson With help from, and apologies to, Dr Rosalie Tostevin Day 8 - After checking into our hotel, and enjoying the microbial carbonates in the lobby floor, we ate and then crashed. We had opted to have our ‘day off’ in Sydney to do some light tourism, and then to take a leisurely drive... Continue Reading →

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From the Mountain to the Microscope – Part 1

Brooke Johnson The wind is warm and dry. It whips lightly over the landscape, teasing small dust devils into short frenzied dances. A long low scarp of black weathered rock pokes through the pink sand which piles up against it. Here and there, low scrubby plants sway in the wind which tussles the scarves and... Continue Reading →

A polarising view of the past

Brooke Jonson The water lapping the shore is warm and relaxing, and the Tethys ocean – which later in the year will be wracked with hurricanes that will scour the sea bed and dump new sediment along the beach – is currently calm. The sand along the shore of this small tropical island, one of... Continue Reading →

Could you survive a pyroclastic flow?

Frey Fyfe Among the many hazards posed by subduction zone volcanoes, some of the deadliest and most viscerally terrifying are pyroclastic density currents (PDCs), ground-hugging clouds of gas and fragmented magma (ash) that can reach temperatures of 1000°C. The very largest can reach speeds of up to 700 km/h and typically travel up to 15km... Continue Reading →

China’s Dusty History

Kaja Fenn Loess deposits are a type of sediment formed from tiny dust particles. They can cover hundreds of square kilometres and are found worldwide. The really cool thing about these deposits, and one of their more prominent characteristics, is their cyclicality. They alternate in colour - yellow, red, yellow, red, and so on… The... Continue Reading →

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