Friday Field Foto #28: Thin-bedded turbidites
It’s not quite Friday yet, but close enough…15 minutes to go.
Check out these strikingly rhythmic turbidite beds. I’m not a fan of the term ‘rhythmites’ because that implies, to me anyway, that the deposits are the result of a rhythmic process. Just because the response appears rhythmic doesn’t mean that the process was.
Anyway, this is a pretty beautiful example of the expression of thin-bedded turbidites. This package is in between two very thick (>50 m) successions of coarse sand and some conglomerate beds (some individual beds getting up to ~8 m thick). These are so well exposed because this entire outcrop is along the coast and washed nicely by wave action.
This is up north of here near the town of Gualala (apparently Ron did some of his graduate work there…maybe we can bug him to post about that someday).
See all the Friday Field Fotos here.
The Jacob Staff (the “jake”) at right is 1.5 m tall.