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Using near infrared spectroscopic data collected by the European Space Agency's Mars Express orbiter, Horgan and Bell found widespread weathered volcanic glass covering the surface of the Martian lowlands.
"The
volcanic glass was created when hot magma reacted explosively
with ice or water," says Horgan. "The same sort of thing happens in Iceland , where
volcanoes erupt under glaciers. The interaction with the ice and the water
causes the magma to become super-explosive, creating tons of sand sized black
particles…"We see these dark plains and enormous glassy sand dune fields
up in the northern Martian polar regions"
Horgan and Bell also found evidence
of dips in the spectrum consistent with weathering caused by the glass being
exposed to acidic water.
Their
finding, which appear in the journal Geology, represents the first detection of
widespread surface weathering during the Amazonian epoch -- the most recent of
the three Martian geologic periods. Click HERE to read about it in the Huffington Post
Mars may have glass, but what it needs is a more feminine touch. |
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