Extended Data Fig. 2: Testing collisional models.
From: Delayed and variable late Archaean atmospheric oxidation due to high collision rates on Earth
a) Model impactor SFDs (red curves as in Fig. 2b) compared with Monte Carlo retrieval of impactor SFDs from spherule layers for the minimum number of independent layers (Extended Data Table 1). Meaning of symbols and colors as in Fig. 2b. b) Best-fit collisional model. The figure shows the model impactor SFDs (blue curves) for γbest = 10γmax. The green and yellow lines are the impactor SFDs reconstructed from spherule layers (see Fig. 2b), but now impactors sizes are reduced by a factor fbest = 1.5 (see text). The red shaded area indicates the range of impactor SFDs for γmax, as in Fig. 2b.
