Sentence examples for based on crater counts from inspiring English sources
Based on crater counts, the team reckoned that the IMPs in their collection were between 50m and 100m years old.A common feature, they found, was that IMPs are composed of two different sorts of landscape, one smooth and one rough.
These younger ages are consistent with the model ages based on crater counts from mare surfaces (Hiesinger and Head 2006).
More recent estimates based on crater counts overlap with the age range 4.1 ± 0.2 Ga (Chassefière et al. 2007) further supporting this conclusion.
The general agreement of our results for age determination for the GB secondaries of the Luna 24 area, and for craters superposed on the GB ejecta, with the age estimate based on crater count and with the mentioned exposition age of one of the Luna 24 samples, also validates the technique of Basilevsky (1976).
The cumulative plots of the CSFD, based on the crater counts on the sample region of the southern highlands including the basin (Fig. 9a, b), show the surface model age of 4.0 Ga, well consistent with previously described geological units of early Noachian southern highlands (Platz et al. 2013; Tanaka et al. 2014).
For ERCC TPM, calculations were based on ERCC counts only.
Absolute model ages are based on the crater production function of (Hartmann and Neukum 2001) with the crater chronology function from (Ivanov 2001).
Occurrence is calculated based on counts of non-hydrogen atoms.
