Sentences with phrase «of ancient riverbeds»

Not exact matches

Soil and conditions are typical of AVAs with alluvial ancient riverbed cobbled clay.

Ancient riverbed deposits of mud rock — rocks containing bits of clay and silt smaller than grains of sand — began increasing around 458 million years ago, around the time that rootless plants became common across Earth, researchers say.

One of Curiosity's first major findings after landing on the Red Planet in August 2012 was an ancient riverbed at its landing site.

Rose's team of archaeologists and geologists gathered more than 800 artifacts from ancient riverbeds in the Dhofar Mountains of southern Oman.

If the features are lined with residual salts, as one would expect of ancient, dried - up lakes or riverbeds, NASA may target them as future landing sites.

Further missions studied the Earth from above, such as one that used of a type of radar to probe below the surface — discovering ancient riverbeds beneath the Sahara Desert, for example.

Each summer, archaeologist Sarah Hlubik treks rutted dirt tracks to a dry riverbed in Kenya, following, approximately, in the footsteps of ancient hominins who camped there about 1.6 million years ago.

A series of robotic missions, from Viking in the 1970s to the Spirit rover still roaming Mars today, have observed ancient riverbeds and polar ice caps storing enough water to submerge the entire planet in an ocean 40 feet deep.

Extensive systems of fossilised riverbeds have been discovered on an ancient region of the Martian surface, supporting the idea that the now cold and dry Red Planet had a warm and wet climate about 4 billion years ago, according to UCL - led research.

Rather than ancient snow pack, only an empty rock - strewn riverbed remains: the glacier has lost 320 vertical feet of ice mass in the intervening years in what researchers describe as a striking effect of global warming.