Two more theories emerged: Yeomans keyline plows with chisel implements following land contours, or Iron Age floods around the 8th century BC creating sapropel bogs. The bog idea would explain why no animal tracks accompany the ruts — mud floods could bury old tracks, forcing new routes. Both were partially challenged by the worn center between ruts. 💡
Listeners propose keyline plow and Iron Age flooding theories for cart ruts
TürkiyeTheory
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Key facts
- Yeomans keyline plow theory proposed with chisel implements drawn through soft material
- Keyline plow would follow land contours for water capture in arid conditions
- Separate theory proposed Iron Age flooding created sapropel bogs in the Phrygian valley around the 8th century BC
- Sapropel refers to lake-bottom sediment or organic matter accumulation under water
- Bog theory explains why no animal tracks accompany cart ruts in soft material
- Flood events could bury old tracks in mud, forcing new routes to be created
- Both theories were debated and partially debunked due to the worn center between paired ruts
Sources
Keyline Design - RIDGEDALE FARM ABridgedalepermaculture.com
Yeoman's described a system of slightly "off" contour sub- soil ripping to control rainfall run off and enable fast flood irrigation of undulating land without ...
An amazing you tube historical look at Keyline Design and P.A. ...permies.com
Keyline design was developed in Australia by farmer and engineer P. A. Yeomans, and described and explained in his books The Keyline Plan, The ...
Keyline Design - California Agricultural Water Stewardship Initiativeagwaterstewards.org
Keyline design was originally developed by P.A. Yeomans in the 1950s to address dwindling water supplies and soil erosion on Australian rangeland. He worked out ...
Yeomans Keyline Systems Explainedyeomansplow.com.au
Keyline planning is based on the natural topography of the land. It uses the form and shape of the land to determine the layout and position of farm dams, ...
Yeomans' Keyline Design and Scale of Permanence: Part Onepermalogica.com
Keyline Design begins with a deep understanding of the topography, the form of the landscape, where the interplay of valleys, ridges, and water ...
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