i'll preface this by saying i'm not 100% sure, and i may be 100% wrong...
i'm too lazy to really do any sort of comprehensive search, but do companies even make 1" carbon forks anymore? i thought carbon forks with 1" steerers went out some years ago. if so, that may be an older carbon fork.
as andypants said, that's definitely a threadless fork/headest. if it was a threadless adapter you'd still have the locknut up top.