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Lost Ocean's Echo: Ancient Seas Shaped Central Asian Mountains
18 May
Summary
- Central Asian landscapes were shaped by a long-lost ocean.
- Tectonic activity and climate played minor roles in mountain building.
- Research used thermal history models spanning over 30 years.
Geological research indicates that the expansive mountain ranges of Central Asia were primarily sculpted by the influence of the ancient Tethys Ocean, rather than by tectonic forces or climatic shifts. Scientists analyzed hundreds of thermal history models compiled over three decades of geological studies in the region.
These models, derived from thermochronology, track how rocks cool during uplift and erosion, reconstructing Earth's past. The study combined these models with plate-tectonic data for the Tethys Ocean's evolution, precipitation records, and mantle convection.
The Tethys Ocean, which vanished over the last 250 million years, with the Mediterranean Sea as its sole remnant, exerted a significant influence. Extensions in this ocean are thought to have reactivated ancient geological zones, creating ridges in Central Asia, far from major collision sites.
This research method, successfully applied to Central Asia, is now being used to investigate other geological puzzles, such as Australia's separation from Antarctica approximately 80 million years ago. The findings were published in Nature Communications Earth and Environment.
