Publication Date:
2023-06-27
Description:
A stable-isotope stratigraphy was established for planktonic and benthic foraminifers from upper Miocene-lower Pliocene pelagic sediments from the Mid-Atlantic Ridge. A correlation of stable-isotope and biostratigraphic data with magnetostratigraphic age revealed the following: (1) the late Miocene carbon-isotope shift in the South Atlantic bottom waters was minute compared with the shift reported for other deep-sea locations (Haq et al., 1980), (2) a significant cooling or continental ice-volume increase occurred between 5.7 and 5.2 Ma, and (3) a period of warming or ice-volume decrease followed, with the rate of warming increasing beginning at 4.5 Ma and reaching a climax at 4.3 Ma. The timing of these paleoceanographic events is correlated with the onset and termination of the Messinian salinity crisis in the Mediterranean Sea.
Keywords:
3-16; 73-519; 73-521; AGE; Deep Sea Drilling Project; DEPTH, sediment/rock; DRILL; Drilling/drill rig; DSDP; DSDP/ODP/IODP sample designation; Elevation of event; Event label; Glomar Challenger; Latitude of event; Leg3; Leg73; Longitude of event; Mass spectrometer VG Micromass 903; Nuttallides umbonifera, δ13C; Nuttallides umbonifera, δ18O; Orbulina universa, δ13C; Orbulina universa, δ18O; Oridorsalis umbonatus, δ13C; Oridorsalis umbonatus, δ18O; Planulina wuellerstorfi, δ13C; Planulina wuellerstorfi, δ18O; Sample code/label; South Atlantic/HILL; South Atlantic/RIDGE
Type:
Dataset
Format:
text/tab-separated-values, 373 data points
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