High sediment yields and cool, wet winters: Test of last glacial paleoclimates in the northern Mediterranean
- 1 January 2000
- journal article
- Published by Geological Society of America in Geology
- Vol. 28 (11), 999-1002
- https://doi.org/10.1130/0091-7613(2000)28<999:hsyacw>2.0.co;2
Abstract
Opposing models have been proposed for last glacial paleoclimates in the Mediterranean area. To discriminate between the alternative models, we calculate variations in sediment yield within a high-resolution stratigraphic framework developed for the Alkyonides basin, central Greece. Latest Quaternary highstand deposits are distinguished from lowstand Lake Corinth deposits on the basis of seismic reflection data and micropaleontological and palynological analyses of drop cores. After depth conversion and calculation of solid sediment masses in successive time slices, sediment discharge rates during the last glacial lowstand interval (ca. 70–12 ka) are shown to have exceeded discharge rates during the preceding interglacial highstand interval (ca. 128–70 ka) by ≥ 60%, implying enhanced seasonality during the glacial period, with cool, dry summer and wet winter conditions in the region. Sediment yield calculations can thus provide an empirical test of paleoclimate models and offer input to sequence stratigraphic models.Keywords
This publication has 18 references indexed in Scilit:
- Paleoseismicity of the 1981 Corinth earthquake fault: Seismic contribution to extensional strain in central Greece and implications for seismic hazardJournal of Geophysical Research, 1998
- Climate and biome simulations for the past 21,000 yearsQuaternary Science Reviews, 1998
- A HIGH-RESOLUTION RECORD OF THE LAST DEGLACIATION IN THE CENTRAL MEDITERRANEAN SEA: PALAEOVEGETATION AND PALAEOHYDROLOGICAL EVOLUTIONQuaternary Science Reviews, 1998
- European lakes as palaeohydrological and palaeoclimatic indicatorsQuaternary Science Reviews, 1993
- Influence of insolation and glaciation on atmospheric circulation in the North Atlantic sector: Implications of general circulation model experiments for the Late Quaternary climatology of EuropeQuaternary Science Reviews, 1992
- Atmospheric response to Ice Age conditions: Climatology near the Earth's surfaceJournal of Geophysical Research: Solid Earth, 1990
- Chronology of expansion and contraction of four great Basin lake systems during the past 35,000 yearsPalaeogeography, Palaeoclimatology, Palaeoecology, 1990
- The influence of continental ice, atmospheric CO2, and land albedo on the climate of the last glacial maximumClimate Dynamics, 1987
- Seismicity, normal faulting, and the geomorphological development of the Gulf of Corinth (Greece): the Corinth earthquakes of February and March 1981Earth and Planetary Science Letters, 1982
- The Climate, Environment and Industries of Stone Age Greece: Part IIProceedings of the Prehistoric Society, 1966