PERITIDAL AND SUBAERIAL EXPOSURE FACIES OF LATE VALANGINIAN TO LATE HAUTERIVIAN PLATFORM-INTERIOR CARBONATES, MLJET ISLAND, CROATIA
The Hauterivian parasequences are dominated by subtidal facies and consist of, from base to top, (1) transgressive fenestral laminites (rare, resting on rooted horizons with karstic tops) or transgressive lags of microbial-lump and pisoid wackestone-packstone to floatstone, or thin dark-colored, coarse ooid rudstone with broken-and-rehealed ooids; (2) well developed subtidal units of peloid lime mudstone-wackestone to floatstone with gastropods, clams, benthic foraminifera and calcareous algae, and branching, cm-wide peloid-filled burrows; (3) regressive fenestral laminites (upper intertidal/supratidal); and (4) karstified tops with incipient breccia of granule-to-pebble-size angular clasts in lime mudstone matrix or dolomitic green shale (emergence horizons); underlying facies commonly are rooted-disrupted and may have branching rootlets and leached mollusks infilled with green shaly dolomite. Some parasequences are completely dolomitized. Some upward deepening parasequences capped by paleosols are suggestive of Fischer’s original Lofer cycles. The facies strongly suggest deposition under dominantly humid climate, and the abundant paleosols suggest significant repeated exposure events.