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229- Lost city
P1 - The discovery of the "Lost City"
An expedition mapping Atlantis Massif came across a pillar of a white rock of 20-storybuilding tall.
Researchers determined the white pillar was emitting heated seawater.
They discovered a field of undersea hot springs they named the Lost City.
P2 - The history of undersea hydrothermal
The black smoker system are the most familiar
/ they occur at mid-ocean ridges
/ water at the vents reach temperatures>400 degrees
/PH<7, leaches S, Fe, Cu and Zn
/ Metal Sulfides produced a mix looks like black smoke
/ areas surrounding teem with animals
P3 - The Lost City are tranquil
/the vent atop the Atlantic massif is too distant for rising magma to heat the water
/heated by warm rock below to 90 degree
/ 9<PH<11, does not produce the metal sulfide, but Ca
/ CaCO3 forms giant white chimneys
P4 - Russian bio chemist AO，British biologist JBSH suggested the primitive atmosphere of Earth might ave been rick in reduced gases => chemical ingredients required for life might have ormed sponaneously
Lost Cit is a natural lab to test.
Chemist GP published a paper demonstrating the hydrothermal fluids at LC contain organic compounds.
Other work suggests LC also produce small organic acids
=> the reduced conditions at the LC vents could support to create organic compounds from inorganic compounds
P5 - The findings from LC also bolster hypotheses about where else in the solar system life might exist.
Any planet/moon containing both peridotite and liquid water could support life-forms
Evidence of these components is strongest on Mars and Jupiter's moon Europa.
revelation 启示 eerily 令人恐惧的
hydrothermal 热水 massif 山峦
tectonic 地壳的 alkaline 碱性的
precipitate 析出 plume 漂浮物
symbiotic 共生的 peridotite 橄榄岩
emanate 放射
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发表于 2023-1-16 10:46:08
