Erosion of continental margins in the Western Mediterranean due to sea-level stagnancy during the Messinian Salinity Crisis
Erosion of continental margins in the Western Mediterranean due to sea-level stagnancy during the Messinian Salinity Crisis
复制标题
墨西拿盐度危机期间海平面停滞导致西地中海大陆边缘侵蚀
DOI:
10.1007/s00367-010-0213-z
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发表时间:
2011
影响因子:
2.1
通讯作者:
Reicherter
中科院分区:
文献类型:
--
作者:
Hübscher;Betzler;Lüdmann;Reicherter
High-resolution multi-channel seismic data from continental slopes with minor sediment input off southwest Mallorca Island, the Bay of Oran (Algeria) and the Alboran Ridge reveal evidence that the Messinian erosional surface is terraced at an almost constant depth interval between 320 and 380 m below present-day sea level. It is proposed that these several hundred- to 2,000-m-wide terraces were eroded contemporaneously and essentially at the same depth. Present-day differences in these depths result from subsidence or uplift in the individual realms. The terraces are thought to have evolved during one or multiple periods of sea-level stagnancy in the Western Mediterranean Basin. According to several published scenarios, a single or multiple periods of relative sea-level stillstand occurred during the Messinian desiccation event, generally known as the Messinian Salinity Crisis. Some authors suggest that the stagnancy started during the refilling phase of the Mediterranean basins. When the rising sea level reached the height of the Sicily Sill, the water spilled over this swell into the eastern basin. The stagnancy persisted until sea level in the eastern basin caught up with the western Mediterranean water level. Other authors assigned periods of sea-level stagnancy to drawdown phases, when inflowing waters from the Atlantic kept the western sea level constant at the depth of the Sicily Sill. Our findings corroborate all those Messinian sea-level reconstructions, forwarding that a single or multiple sea-level stagnancies at the depth of the Sicily Sill lasted long enough to significantly erode the upper slope. Our data also have implications for the ongoing debate of the palaeo-depth of the Sicily Sill. Since the Mallorcan plateau experienced the least vertical movement, the observed terrace depth of 380 m there is inferred to be close to the Messinian depth of this swell.
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DOI:
--
发表时间:
1978
期刊:
影响因子:
--
作者:
W. Ryan;M. Cita
通讯作者:
M. Cita
DOI:
--
发表时间:
1996
期刊:
影响因子:
--
作者:
M. Esteban;J. Braga;J. Martín;C. Santisteban
通讯作者:
C. Santisteban
DOI:
--
发表时间:
1978
期刊:
影响因子:
--
作者:
A. Rizzini;F. Vezzani;V. Cococcetta;G. Milad
通讯作者:
G. Milad
DOI:
--
发表时间:
1994
期刊:
影响因子:
--
作者:
L. Pomar;W. Ward
通讯作者:
W. Ward
DOI:
--
发表时间:
1984
期刊:
影响因子:
--
作者:
Z. Garfunkel;G. Almagor
通讯作者:
G. Almagor