Dear colleagues
Good day to you all. The old conventional depth of 150km for the diamond stability field has several times been updated to lower values (in particular to 75, 80, 100, 110, 120, 135 and 140km) by a number of diamond geologists. Which is the correct (official) depth for diamond formation today (especially for subduction zones)?
Best regards
Ioannis Kamvisis
Based on my knowledge, there isn't an "official" singular depth at which diamond formation occurs. This is because diamond formation depends on a combination of pressure, temperature, and the presence of specific ingredients (primarily carbon), and these conditions can vary within Earth's mantle.
The conventional understanding is that most natural diamonds form in the Earth's mantle at depths between 150 and 200 kilometres, in a region called the "diamond stability zone." However, these depths are estimates and are not strictly fixed; there can be variations.
More recent research suggests that diamond formation can occur at shallower depths, even as low as 75-80 km, especially under specific geodynamic settings such as subduction zones. Subduction zones are places where one tectonic plate is forced under another, leading to high-pressure, high-temperature conditions favourable for diamond formation.
Given the varying reports, it's likely that the depth at which diamond forms can differ based on specific geological conditions, including the geothermal gradient, pressure, temperature, and the availability of carbon-bearing fluids.
For the most accurate, up-to-date information, please consult recent scientific literature or a geology professional specialising in diamond formation. Please note that diamond formation processes remain a topic of active research, and our understanding could change with new findings.
I hope this helps.
Goodluck
DEAR JOSHUA
GOOD MORNING. THANK YOU FOR YOUR COMPREHENSIVE REPLY. IT IS HELPFUL. I WILL FOLLOW UP TO DATE BIBLIOGRAPHY.
BEST REGARDS
IOANNIS
- Badges
- Science topic
- Similar topics
- Filing