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Gradstein, Felix M; Huang, Zehui; Merrett, Doug; Ogg, James G (1992): Correlation of Late Jurassic and Early Cretaceous zonation events in ODP and DSDP Atlantic and Indian Ocean sites (Table 5). PANGAEA,, Supplement to: Gradstein, FM et al. (1992): Probabilistic zonation of early Cretaceous microfossil sequences, Atlantic and Indian Oceans, with special reference to Leg 123. In: Gradstein, FM; Ludden, JN; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 123, 759-777,

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A database was built of 378 stratigraphic events, including first and last stratigraphic occurrences (FO/LO) of calcareous nannofossils, foraminifers, and dinocysts, and geomagnetic reversal occurrences in Latest Jurassic through Early Cretaceous deep-marine strata of 10 Atlantic and three Indian Ocean drilling sites. A total 136 different events are included, about one-third of which are unique to either ocean; however, this number may decrease when more Indian Ocean ODP sites become available for study. Using the complete data set, with the quantitative stratigraphy methods STRATCOR and RASC, we calculated closely comparable optimum sequences of average first and last occurrence positions. The preferred zonal solution, based on the STRATCOR method, includes 56 events, each of which occurs in 3 or more sites and comprises 6 geomagnetic reversal events, 25 nannofossils, 5 planktonic and 8 benthic foraminifers, and 12 dinocysts. Eight assemblage zones of Tithonian through Albian age have been recognized that correlate most of these sites. The nannofossil events, Cruciellipsis cuvillieri FO, Tubodiscus verenae FO, Rucinolithus wisei LO, and Chiastozygus litterarius FO, in the Atlantic Ocean are half a stage or more older than those in the Indian Ocean. Stratigraphic ranges of the benthic foraminifers Haplophragmium inconstans, Trochammina quinqueloba, and Dorothia praehauteriviana, differ significantly among sites. The same is true for the dinocyst events Phoberocysta neocomica LO and Druggidium apicopaucicum LO, rendering these taxa less useful for zonation and correlation.
Median Latitude: 19.481077 * Median Longitude: -11.446431 * South-bound Latitude: -19.932000 * West-bound Longitude: -84.516200 * North-bound Latitude: 40.960000 * East-bound Longitude: 117.892700
Date/Time Start: 1970-05-13T00:00:00 * Date/Time End: 1988-10-26T00:00:00
Minimum DEPTH, sediment/rock: 276.15 m * Maximum DEPTH, sediment/rock: 76366.00 m
11-105 * Latitude: 34.895300 * Longitude: -69.173300 * Date/Time: 1970-05-13T00:00:00 * Elevation: -5251.0 m * Penetration: 633 m * Recovery: 195.9 m * Location: North Atlantic/HILL * Campaign: Leg11 * Basis: Glomar Challenger * Device: Drilling/drill rig (DRILL) * Comment: 43 cores; 363 m cored; 0 m drilled; 54 % recovery
123-765 * Latitude: -15.976000 * Longitude: 117.575200 * Date/Time Start: 1988-09-07T00:00:00 * Date/Time End: 1988-10-18T00:00:00 * Elevation: -5728.0 m * Penetration: 2564 m * Recovery: 732.7 m * Location: South Indian Ridge, South Indian Ocean * Campaign: Leg123 * Basis: Joides Resolution * Device: Composite Core (COMPCORE) * Comment: 134 cores; 1265.9 m cored; 0 m drilled; 57.9% recovery
123-766 * Latitude: -19.932000 * Longitude: 110.454100 * Date/Time Start: 1988-10-19T00:00:00 * Date/Time End: 1988-10-26T00:00:00 * Elevation: -4008.0 m * Penetration: 527.2 m * Recovery: 347.5 m * Location: South Indian Ridge, South Indian Ocean * Campaign: Leg123 * Basis: Joides Resolution * Device: Composite Core (COMPCORE) * Comment: 55 cores; 527.2 m cored; 0 m drilled; 65.9% recovery
Sediment depth is the measured depth per site of the actually observed record.
#NameShort NameUnitPrincipal InvestigatorMethodComment
1Event labelEvent
2CodeCodeGradstein, Felix M
3Ageprofile Datum DescriptionAgeprof dat desGradstein, Felix MFO = first occurrence, LO = last occurrence, N = calcareous nannofossils, PF = planktonic foraminifer, M = geomagnetic polarity reversal event, P = dinocysts (palynomorph), BF = benthic foraminifer
4DEPTH, sediment/rockDepthmGeocode
5Depth, sediment revisedDepth revisedmGradstein, Felix Minterpolated depth for the event in the FCSS (Final composite Standard Sequence)
1467 data points

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