English term
after 1 My
The source of my text:
https://books.google.com.eg/books?id=YKkw-Bre-kAC&pg=PA219&lpg=PA219&dq=%22HI+minerals,+after+1+My%22&source=bl&ots=69ms80AHT8&sig=L3RBvuL2d5--maBL2PikM4PIlFA&hl=ar&sa=X&ved=0ahUKEwjx4KmBiJ_PAhWCURoKHc-lDOQQ6AEIGjAA#v=onepage&q=%22HI%20minerals%2C%20after%201%20My%22&f=false
Context:
Old soils show high kaolinite and often gibbsite in the C horizons.
In soils of the Coastal Southeastern United States one finds a loss of A horizon 2:1 minerals, essentially HI minerals, after 1 My, where the soils of older age show, rather abruptly, a loss of significant amounts of 2:1 minerals, a change which was accompanied by a change in bulk composition of the soils (Howard et al., 1993).
3 +7 | after one million years | philgoddard |
Non-PRO (1): Edith Kelly
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