Jonathan O'Neil of the University of Ottawa telling the story of the Hadean mantle and crust from the few scraps of rocks left to us from that time. Short- and long-lived isotopic systems constrain the timing and processes of the Earth's first crust. The second keynote at the Geotop annual meeting, hosted at ÉTS.
#UOttawa #ETS_Montreal #Geotop #UQAM #Hadean #EarthsMantle #Geochemistry
#ClassicDoctorWho - The Third Doctor
Season 7 Episode 19 - Inferno (Pt. 1)
1970 · 25 min
Sci-Fi · Adventure · Fantasy
"UNIT are at a project run by Professor Stahlman who intends to penetrate Earth’s crust."
https://tubitv.com/tv-shows/200029874/s07-e19-inferno-pt-1
2023: Scientists extract a kilometer of rock from #EarthsMantle in record-breaking mission
By Ben Turner
published June 8, 2023
2024: Are #geothermal power plants safe?
By: Dave Roos | Updated: Apr 16, 2024
"Unfortunately, #geothermal power plants may have an unintended and potentially dangerous side effect: #earthquakes. Whenever you drill miles into the Earth and remove material, whether it's steam, water or hot rock, you release pressure that causes the ground above the geothermal pocket to shift and subside. Even worse, the most abundant geothermal energy sources are located in areas of high seismic activity. In fact, some experts actually believe that drilling into the rocks around a fault line could trigger quakes."
https://science.howstuffworks.com/environmental/energy/geothermal-power-plants-safe.htm
#BigOilAndGas #DoctorWho #DrillBabyDrill #MantleDrilling #DeepSeaMining #DoctorWhoWarnedUs
