How to make lunar layers

How to make lunar layers
How to make lunar layers Formation scenarios for stratified lunar terrain based on Zanetti et al. LPSC 42 (2011). Scenario A is alternating pyroclastic and flood basalts. Scenario B is flood basalts followed by regolith formation. Scenario C (the preferred hypothesis) is dark glass crust formation on the top surface of flood basalts. Mike Malaska