c89a5c28_mical_Sediments_and_Landscapes__1
[0] Not just a few samples [2] Individual studies involve only a very few sites, due to the expenses involved, but cumulative observations have a wide distribution [3] This model has been applied globally and is consistent with Liu's VML observations of over 104 micro-sedimentary basins. [4] The model is too new to have been assessed at sites globally or articulated to the VML data set. [1] 
The model's discussion in the literature has been fit to only a few site contexts.
Rock Varnish Chapter 8 in Geochemical Sediments and Landscapes
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