I was thinking more of Tiamat’s breakup in near space. There must have been rocky bits of all sizes and shapes scattered around, smashing into each other, sometimes breaking, sometimes joining. All the water released during the collision would have been turned into ice by space-cold. With less mass than stony material, the ice would have been the last major layer to accumulate on anything, mostly becoming water vapor passing through an atmosphere. I don’t recall the story’s details—was Tiamat completely destroyed in the collision? There probably was a chunk big enough left to retain some atmosphere and thus some liquid water. Any idea where that chunk went? Did that chunk become the major component of Earth? Seems unlikely as the spacing of the rest of Sol’s family probably was much the same then as now, meaning an Earth existed at the time.
Thanks!
John Keebaugh
"Deep within the Earth under southern Africa, there exists a dense region of matter known as the 'African Large Low Shear Velocity Province'. Seismological data suggests that this dense region lies in between the Earth's mantle and its hot liquid outer core. The latter contains the turbulent molten iron which is thought to generate the Earth's magnetic flux. If the dense chunk of matter moves between the layers, bobbing up and down on the welling liquid sea that makes up the core, then that may affect local magnetic conditions and thus create the observed anomaly.
Which brings us back to Theia, or at least what may remain of this proto-planet.
In a paper submitted to the 52nd Lunar and Planetary Science Conference, scientists from Arizona State University have suggested that the remnants of the impactor planet Theia are one and the same as the deep, dense chunk lying deep below the African continent ( https://www.hou.usra.edu/meetings/lpsc2021/pdf/1980.pdf ). This would work if the remnants of the impactor planet were iron rich, and therefore capable of sinking deep through the proto-planet Earth's bulk silicate mantle."
I was thinking more of Tiamat’s breakup in near space. There must have been rocky bits of all sizes and shapes scattered around, smashing into each other, sometimes breaking, sometimes joining. All the water released during the collision would have been turned into ice by space-cold. With less mass than stony material, the ice would have been the last major layer to accumulate on anything, mostly becoming water vapor passing through an atmosphere. I don’t recall the story’s details—was Tiamat completely destroyed in the collision? There probably was a chunk big enough left to retain some atmosphere and thus some liquid water. Any idea where that chunk went? Did that chunk become the major component of Earth? Seems unlikely as the spacing of the rest of Sol’s family probably was much the same then as now, meaning an Earth existed at the time.
Thanks!
John Keebaugh
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