Was platetectonics occurring when life first formed on Earth? UofR NatureComms
We measured zircon-melt partition coefficients of Sr, Nb, Th, Y, Dy, and Yb, at five Ts between 1300 °C and 975 °C and 1 GPa, where the silicate melt was peraluminous and HO-bearing. The temperature was chosen to be high enough to produce synthetic zircon crystals that are large enough to be measured by LA-ICP-MS.
; our experimental mix was made more alkali and water-rich. We wanted to evaluate whether temperature, pressure, water, and alkali-content of the melt could yield different D values for the selected elements.. This mix was prepared by first mixing alkali carbonates and ZrO. Then we decarbonated the mix by holding it at 850 °C for 5 h in a muffle furnace. This mix was then held at 1350 °C in a muffle furnace overnight and then dropped into water to be quenched into glass.
. The experiments were conducted by first pressurizing the assembly to 1 GPa, displayed on a 20 cm Heise pressure gauge, and heated up to the temperature of interest at 100 °C/min. The temperature was monitored using a W
United States Latest News, United States Headlines
Similar News:You can also read news stories similar to this one that we have collected from other news sources.
Future Indian Ocean warming patterns - Nature CommunicationsStrong negative climatological air-sea interactions effectively damp warming over the eastern Indian Ocean, resulting in weakening of the winds therein. This, in turn, changes the strength of ocean currents, which is considered as the primary mechanism responsible for modulating warming patterns.
Read more »
Italian parliament bill would ban English words in official communicationsItalian officials better start pronouncing 'bruschetta' correctly or they could face up to a six-figure fine.
Read more »
Viruses of a key coral symbiont exhibit temperature-driven productivity across a reefscape - ISME CommunicationsISME Communications - Viruses of a key coral symbiont exhibit temperature-driven productivity across a reefscape
Read more »
Mutation in glutamate transporter homologue GltTk provides insights into pathologic mechanism of episodic ataxia 6 - Nature CommunicationsEpisodic ataxias (EAs) are rare neurological conditions that cause motor impairment. Here the authors investigated the molecular mechanism of such a pathological condition caused by a mutation of a conserved proline into arginine residue.
Read more »
SA Zoo looks to expand nature school model as demand surgesThe Will Smith Zoo School, which opened its current Alamo City campus in 2018, now has a waiting list of more than 8,000 families.
Read more »
Use of mobile diagnostics and digital clinical trials in cardiology - Nature MedicineUse of mobile diagnostics and digital clinical trials in cardiology. Comment from Sinje Gehr, Nandha Kumar Balasubramaniam & Christoph Russmann, Health Campus Goettingen, harvardmed. Published as part of our series - Rethinking Evidence in Medicine.
Read more »