The Government has offered Australia's three mobile operators, and vividwireless, renewal of their existing spectrum allocated on 15 year licences in the late 90s and early 2000s at set prices, while the Government expects to rake in $3 billion.
A photograph of the surface is found on LiveScience.com. Its description says, "Desert pavement formed long ago in an area that is extremely flat and arid,
where tectonic activity is low and rocks are highly resistant to weathering. A
pencil is shown for scale."
The age of the surface was determined by measuring the concentration of 10Be, an isotope, which is produced when a material is exposed to Earth’s atmosphere.
The isotope 10Be is a beryllium isotope that is produced in the Earth’s atmosphere by the interaction of the elements oxygen and nitrogen with cosmic rays coming in from outer space.
The isotope accumulates in soils but decays gradually (half-life of 1.51 million years) into 10B, a boron isotope.
Dr. Matmon stated, "The surface we dated most likely represents large areas in the Sahara and Arabia Deserts. We hope to be able to collect samples from other locations in the Sahara and Arabia Deserts and establish the global extent of these old surfaces."
LiveScience.com quoted Dr. Matmon: "Since the initial formation of desert pavement (the material we dated) is ... related to the age of the surface, we dated the surface itself. We did not choose the outstanding anomalous rocks on the surface." [“Oldest Surface on Earth Discovered”]
David Bass
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