Late Weichselian and Holocene Relative Sea-level History of Bröggerhalvöya, Spitsbergen

1987 ◽  
Vol 27 (1) ◽  
pp. 41-50 ◽  
Author(s):  
Steven L. Forman ◽  
Daniel H. Mann ◽  
Gifford H. Miller
Keyword(s):  
Sea Level ◽  
Barents Sea ◽  
Relative Sea Level ◽  
Norwegian Sea ◽  
Depositional Processes ◽  
Before And After ◽  
History Of ◽  
Ice Conditions ◽  
Late Weichselian ◽  
Raised Beaches

AbstractRadiocarbon-dated whalebones from raised beaches record a relative sea-level history for Bröggerhalvöya, western Spitsbergen that suggest a two-step deglaciation on Svalbard at the end of the late Weichselian glaciation. The late Weichselian marine limit was reached at about 13,000 yr B.P. and was followed by relatively slow emergence until about 10,000 yr B.P. either in response to ice unloading in the Barents Sea, initial retreat of local fjord glaciers, or some combination of the two. Rare whale skeletons dating between 13,000 and 10,000 yr B.P. indicate that the Norwegian Sea was at least seasonally ice free during that interval. Deglaciation of Spitsbergen is recorded by the rapid emergence of Bröggerhalvöya after 10,000 yr B.P. This was followed by a transgression during the mid-Holocene, here named the Talavera Transgression, and another in modern times. Raised beach morphologies suggest striking differences in nearshore depositional processes before and after 10,000 yr B.P. that are probably related to changes in the rate of uplift and in sea-ice conditions.

scholarly journals New relative sea-level insights into the isostatic history of the Western Mediterranean

2018 ◽  
Vol 201 ◽  
pp. 396-408 ◽  
Author(s):  
Matteo Vacchi ◽  
Matthieu Ghilardi ◽  
Rita T. Melis ◽  
Giorgio Spada ◽  
Matthieu Giaime ◽  
...  
Keyword(s):  
Sea Level ◽  
Western Mediterranean ◽  
Relative Sea Level ◽  
History Of

scholarly journals Lack of marine entry into Marmara and Black Sea-lakes indicate low relative sea level during MIS 3 in the northeastern Mediterranean

2019 ◽  
Author(s):  
Anastasia G. Yanchilina ◽  
Celine Grall ◽  
William B. F. Ryan ◽  
Jerry F. McManus ◽  
Candace O. Major
Keyword(s):  
Sea Level ◽  
Black Sea ◽  
Global Ocean ◽  
The Black Sea ◽  
Marmara Sea ◽  
Independent Data ◽  
Relative Sea Level ◽  
Mis 3 ◽  
History Of ◽  
Marine Isotope Stage 3

Abstract. The Marine Isotope Stage 3 (MIS 3) is considered a period of persistent and rapid climate and sea level variabilities during which eustatic sea level is observed to have varied by tens of meters. Constraints on local sea level during this time are critical for further estimates of these variabilities. We here present constraints on relative sea level in the Marmara and Black Sea regions in the northeastern Mediterranean, inferred from reconstructions of the history of the connections and disconnections (partial or total) of these seas together with the global ocean. We use a set of independent data from seismic imaging and core-analyses to infer that the Marmara and Black Seas remained connected persistent freshwater lakes that outflowed to the global ocean during the majority of MIS 3. Marine water intrusion during the early MIS-3 stage may have occurred into the Marmara Sea-Lake but not the Black Sea-Lake. This suggests that the relative sea level was near the paleo-elevation of the Bosporus sill and possibly slightly above the Dardanelles paleo-elevation, ~80 mbsl. The Eustatic sea level may have been even lower, considering the isostatic effects of the Eurasian ice sheet would have locally uplifted the topography of the northeastern Mediterrranean.

Mid-Cretaceous onlap history of the Market Weighton structural high, northeast England

1999 ◽  
Vol 136 (6) ◽  
pp. 681-696 ◽  
Author(s):  
C. J. UNDERWOOD ◽  
S. F. MITCHELL
Keyword(s):  
Sea Level ◽  
High Frequency ◽  
Sedimentary Facies ◽  
Relative Sea Level ◽  
Western Margin ◽  
Level Curves ◽  
History Of ◽  
Tectonic Settings ◽  
Global Sea Level ◽  
Structural High

The mid-Cretaceous sediments of northeast England were deposited at the western margin of the southern North Sea Basin, with sedimentation occurring in a range of tectonic settings. Detailed analysis of the areal distribution and sedimentary facies of Aptian to earliest Cenomanian sediments has allowed the pattern of onlap onto the Market Weighton structural high and changes in relative sea level to be documented. Successive onlap episodes during the Early Aptian, Late Aptian and Early Albian culminated in the final flooding of the structure during the Late Albian (varicosum Subzone). Sea-level curves generated from coastal onlap patterns are difficult to relate to published ‘global’ sea-level curves due to the high frequency of the fluctuations in relative sea level observed. Despite this, detailed correlation and analysis of sedimentological events suggest that even the most expanded, basinal succession is relatively incomplete. This study has also shown that the change from dominantly syn-tectonic to dominantly post-tectonic sedimentation style occurred in the late Early Albian.

Holocene relative sea-level history of Franz Josef Land, Russia

1997 ◽  
Vol 109 (9) ◽  
pp. 1116-1133 ◽  
Author(s):  
Steven L. Forman ◽  
Richard Weihe ◽  
David Lubinski ◽  
Gennady Tarasov ◽  
Sergey Korsun ◽  
...  
Keyword(s):  
Sea Level ◽  
Relative Sea Level ◽  
Franz Josef Land ◽  
History Of
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