The Lord's Pink Ocean

Short sci-fi read focused on the relations between two uneducated families, and some visitors, in a little oasis amid a world that's been destroyed by a red tide. There was a weird focus on miscegenation, but I wasn't around in the 70's to know if that was a reflection/rebuke of real-world sentiments. The patriarchs of either family were also uncomfortably boorish, but luckily the POV switches to the children later on. Overall, somewhat interesting, but you're not missing much if you skip it (although it is very short - I'm a slow reader and I managed to get through it in an evening).