Atacama desert dating

This is much older than other hyper-arid regions, such as the Dry Valleys of Antarctica (10-11 million years) and the Namib desert in Africa (5 million years)."The origin of the aridity in the Atacama dates back to the opening of ocean pathways - the opening between South America and Antarctica, and between Australia and the Antarctic.The Atacama is well known for its lack of rainfall, but scientists are only now getting a handle on how long it has experienced low precipitation levels.Dr Tibor Dunai from Edinburgh, UK, is working in the region to date surfaces.Cosmic aid There are locations in the Atacama where not a single drop of rain has been recorded by humans, and the Edinburgh University researcher has studied dry river beds he can show have had no water running through them for 120,000 years.But it is with the general hyper-aridity conditions of the Atacama that the Scottish-based scientist is most interested.

But on July 7, 2011, when the Moderate Resolution Imaging Spectroradiometer (MODIS) on NASA’s Terra satellite acquired these images, much of the white came from a far rarer commodity: snow.

This theory proposes that the paucity of sediments running off the desert region into the ocean is denying lubrication to the Pacific and South American tectonic plates which meet just off the coast.

This causes a degree of locking and leads to greater uplift of the Andes than would otherwise be the case.

You can read more about the Chile collection sites and previous meteorite finds in the following research papers: We spent 9 days in the field and collectively recovered ~ 600 meteorite stones!

Several of these are likely paired with each other, representing different fragments of the same parent meteorite that exploded and scattered debris across a strewn field.

Leave a Reply

  1. Mexican adult roulette chat 06-Jul-2020 22:26

    But even if this is the case, the diversity of ethnicity is still off the charts.

  2. consolidating debt bad credit 26-Feb-2020 03:21

    People want to communicate face to face so that no stranger interferes with the conversation.

  3. updating bsd system 16-Apr-2020 13:13

    Klikając lub nawigując w tej witrynie, wyrażasz zgodę na gromadzenie przez nas informacji na Facebooku i poza nim przy użyciu plików cookie.

  4. Webcams free live granny mommy 13-Feb-2020 00:02

    We are always happy to have new users who will be entertained by our regular chatters and VIP members. Come chat and make a few friends to enjoy your rest of the life.

  5. Private sexy chat rooms no signup 17-Sep-2019 09:38

    so I got together with some experts, and we scoured the internet for some of the most common, yet ineffective dating advice out there right now.