The dark contrast of the fossilized cell walls suggests that a light element (low atomic number), perhaps carbon, is still present.
However, this technique only provides an external morphological description of putative fossilized cells and is incapable of distinguishing between abiotic fossils of similar morphologies.
These methods, especially in relation to the theory of frames, have imported a new interest into a subject which was in danger of becoming fossilized.
The resulting structures (stromatolites) often undergo only moderate diagenesis and fossilize with characteristic biofabrics.
In the case of fossilized, older, adult learners this may be true.
It is quite impossible, then, to give a principled reason why one part of the cluster would fossilize and another would not.
The mat-forming microorganisms were healthy when fossilized (by silicification) and showed no morphological signs of stress.
The prediction, then, is that successful resetting is impossible, and the interlanguage grammar of every learner will fossilize at the nontargetlike value.
