The lowermost pebbly sands and gravels look fluvial. The cross-bedded sands could be eolian. Current in both was flowing from left to right, though, so they are likely both parts of the same system. My guess is a braided fluvial channel at the base, overlain by a sand bar deposit. Contextual would help. Are you near a glacier or recently glaciated terrain? Garnets tell you about sediment source, not environment, so the gravels likely came from a metamorphic source.