Is Spa Water a Fossil of Water? Uncover the Real Ultra-Deep Water Cycles | Research News - University of Tsukuba
The water in aquifers holds a special place in creationist mythology because, despite the fact that there isn't nearly enough of it, they will claim it's where the water that flooded Earth to a depth sufficient to cover the highest mountains (29,000 feet) during their favourite mass murderer's genocidal flood came from and went back to. If that were remotely true, of course, it couldn't possibly be more than 10,000 years old, because that was when Earth was magicked out of nothing, so the tale goes.
However, in yet another science paper that casually refutes creationism, two scientists from the University of Tsukuba, Japan, have dated the water in natural spas in central Japan and found it to be 1.5-5 million years old. Not only does it predate creationism's mythical flood, but it predates creationism's mythical 'Creation Week' when they claim their magic god magicked the universe out of nothing, having first self-assembled out of nothing using a design it made before it existed (I'm not making this up, but you can see why its trivially easy to refute creationism and why most people grow out of it eventually!).
Like the vast majority of the history of Earth, this water entered the aquifers in that immense period of pre-'Creation' history.
First, a brief AI background to the dating method. Creationists should note that this is not radiometric dating, so their traditional dismissal modes don't apply, so they need to ask their cult leaders how best to misrepresent the science:
How can the age of lithospheric water be determined using isotopes of hydrogen (^2H) and oxygen (^18O)? The age of lithospheric water can be determined using isotopes of hydrogen (^2H, also known as deuterium) and oxygen (^18O) through a method called stable isotope analysis. Water molecules with different isotopic compositions can provide information about the origin and history of the water. Here's a brief explanation of how the age determination process works:How the scientists made this discovery is the subject of a paper in the Journal of Hydrology, and a press release from Tsukuba University:It's important to note that this method provides an estimate of the average age of the water in a particular system, and the accuracy can be influenced by various factors, including the local geological conditions and the complexity of water-rock interactions. Additionally, combining multiple isotopic systems and other geochemical tracers can enhance the precision of age determination.
- Isotope Fractionation:
- Isotope fractionation occurs during various processes like evaporation and condensation.
- Lighter isotopes tend to evaporate more readily than heavier ones. For example, in the water cycle, water with lighter isotopes of hydrogen and oxygen is preferentially evaporated, leaving heavier isotopes behind.
- Isotope Ratios:
- The ratio of heavy to light isotopes in a water sample can be measured. For example, the ratio of ^18O to ^16O and ^2H to ^1H (or deuterium to hydrogen).
- Meteorological Processes:
- Different meteorological processes can influence the isotopic composition of water. For instance, precipitation tends to have a characteristic isotopic signature based on temperature, altitude, and other factors.
- Lithospheric Water Age Determination:
- The isotopic composition of water in the lithosphere can be compared to known meteoric water lines or regional meteoric water lines.
- Over time, water interacts with rocks, minerals, and other geological materials. This interaction can affect the isotopic composition of water. By analyzing the isotopic ratios in the lithospheric water, scientists can estimate the age of the water based on these interactions.
- Modeling and Interpretation:
- Isotope hydrologists and geochemists often use mathematical models and statistical methods to interpret the isotopic data and estimate the age of the water.
- The age determination is based on the understanding of how isotopic ratios change over time due to geological processes.