FN Archimer Export Format
PT J
TI Estimated reservoir ages of the Black Sea since the last glacial
BT 
AF KWIECIEN, O.
   ARZ, H. W.
   LAMY, F.
   WULF, S.
   BAHR, A.
   ROEHL, U.
   HAUG, G. H.
AS 1:1;2:1;3:1;4:1;5:2,3;6:2;7:1;
FF 1:;2:;3:;4:;5:;6:;7:;
C1 Geoforschungszentrum Potsdam, D-14473 Potsdam, Germany.
   Univ Bremen, Ctr Marine Environm Res, MARUM, Bremen, Germany.
   IFM, GEOMAR, Kiel, Germany.
C2 GFZ GERMAN RES CTR GEOSCI, GERMANY
   UNIV BREMEN, GERMANY
   GEOMAR, GERMANY
IF 0.781
TC 92
UR https://archimer.ifremer.fr/doc/00209/31990/30430.pdf
LA English
DT Article
CR MD 139 / ASSEMBLAGE - 1
BO Marion Dufresne
DE ;mediterranean abyssal sediments;minoan eruption;tephra layers;radiocarbon;santorini;deglaciation;history;variability;calibration;resolution
AB Accelerator mass spectrometry (AMS) radiocarbon dating of ostracod and gastropod shells from the southwestern Black Sea cores combined with tephrochronology provides the basis for studying reservoir age changes in the late-glacial Black Sea. The comparison of our data with records from the northwestern Black Sea shows that an apparent reservoir age of similar to 1450 C-14 yr found in the glacial is characteristic of a homogenized water column. This apparent reservoir age is most likely due to the hardwater effect. Though data indicate that a reservoir age of similar to 1450 C-14 yr may have persisted until the Bolling-Allerod warm period, a comparison with the GISP2 ice-core record suggests a gradual reduction of the reservoir age to similar to 1000 C-14 yr, which might have been caused by dilution effects of inflowing meltwater. During the Bolling-Allerod warm period, soil development and increased vegetation cover in the catchment area of the Black Sea could have hampered erosion of carbonate bedrock, and hence diminished contamination by "old" carbon brought to the Black Sea basin by rivers. A further reduction of the reservoir age most probably occurred contemporary to the precipitation of inorganic carbonates triggered by increased phytoplankton activity, and was confined to the upper water column, Intensified deep water formation subsequently enhanced the mixing/convection and renewal of intermediate water. During the Younger Dryas, the age of the upper water column was close to 0 yr, while the intermediate water was similar to 900 C-14 yr older. The first inflow of saline Mediterranean water, at similar to 8300 C-14 yr BP, shifted the surface water age towards the recent value of similar to 400 C-14 yr.
PY 2008
SO Radiocarbon
SN 0033-8222
PU Univ Arizona Dept Geosciences
VL 50
IS 1
UT 000254931300008
BP 99
EP 118
ID 31990
ER

EF