Sea-level change in the Irish Sea since the Last Glacial Maximum: constraints from isostatic modelling

2001 ◽  
Vol 16 (5) ◽  
pp. 497-506 ◽  
Author(s):  
Kurt Lambeck ◽  
Anthony P. Purcell
Keyword(s):  
Sea Level ◽  
Last Glacial Maximum ◽  
Sea Level Change ◽  
Glacial Maximum ◽  
Irish Sea ◽  
Last Glacial ◽  
Level Change ◽  
The Irish Sea ◽  
The Last Glacial Maximum ◽  
The Last Glacial

A model study of the effect of climate and sea-level change on the evolution of the Antarctic Ice Sheet from the Last Glacial Maximum to 2100

2014 ◽  
Vol 45 (3-4) ◽  
pp. 837-851 ◽  
Author(s):  
M. N. A. Maris ◽  
J. M. van Wessem ◽  
W. J. van de Berg ◽  
B. de Boer ◽  
J. Oerlemans
Keyword(s):  
Sea Level ◽  
Last Glacial Maximum ◽  
Sea Level Change ◽  
Antarctic Ice Sheet ◽  
Last Glacial ◽  
Level Change ◽  
Model Study ◽  
The Antarctic ◽  
The Last Glacial Maximum ◽  
The Last Glacial

scholarly journals The Croker Carbonate Slabs: extensive methane-derived authigenic carbonate in the Irish Sea—nature, origin, longevity and environmental significance

2019 ◽  
Vol 40 (4) ◽  
pp. 423-438 ◽  
Author(s):  
Alan Judd ◽  
Tamsyn Noble-James ◽  
Neil Golding ◽  
Andrew Eggett ◽  
Markus Diesing ◽  
...  
Keyword(s):  
Last Glacial Maximum ◽  
Glacial Maximum ◽  
Authigenic Carbonate ◽  
Irish Sea ◽  
Surficial Sediments ◽  
Glacial Sediments ◽  
Last Glacial ◽  
The Irish Sea ◽  
The Last Glacial Maximum ◽  
The Last Glacial

Abstract The Croker Carbonate Slabs, in the UK sector of the Irish Sea, has shallow (70 to 100 m) water, strong (> 2 knot) tidal currents, coarse mobile surficial sediments and the most extensive methane-derived authigenic carbonate (MDAC) known in European waters. Multi-disciplinary studies (2004 to 2015) were commissioned specifically to document the benthic habitat, and have resulted in the designation of this site as a Marine Protected Area (MPA) under the European Commission’s Habitats Directive as an example of “Submarine structures formed by leaking gases”. However, this paper is focussed on the geoscience aspects of the site: the mineralogy and isotopic composition of the MDAC, its formation and age. It considers the implications of these findings with respect to the timing of the deglaciation of the area since the Last Glacial Maximum (LGM), and the environmental implications of the seepage of methane from the site over a period of at least 17,000 years. Carbon isotope ratios (δ13 C − 34 to − 54‰) confirm that the carbonate minerals (high-Mg calcite and aragonite) result from the anaerobic oxidation of methane. Widespread shallow gas within post-glacial sediments is sourced from underlying coal-bearing Carboniferous strata. Geophysical (side-scan sonar and multi-beam echo sounder) and visual surveys show that the MDAC occurs as isolated lumps, continuous pavements, and cliffs < 6 m tall, which post-date the post-glacial sediments, but are in places covered by a veneer of coarse mobile surficial sediments. U-Th dates (17,000 ± 5500 to 4000 ± 200 BP) suggest continual MDAC formation since the last glacial maximum, and constrain the postglacial sea level rise in this part of the Irish Sea; the site must have been submarine before MDAC formation started, whether or not methane was escaping. Visual and acoustic evidence of gas seepage is limited, but methane concentrations in the water are high (< 21.4 nmol l−1) and suggest present-day export to the atmosphere. It is also implied that significant methane release to the atmosphere occurred immediately after the retreat of the ice that covered the site during the LGM until 21.9 to 20.7 ka BP.

scholarly journals Sea-level evolution of the Laptev Sea and the East Siberian Sea since the last glacial maximum

arktos ◽  
2015 ◽  
Vol 1 (1) ◽  
Author(s):  
Volker Klemann ◽  
Birgit Heim ◽  
Henning A. Bauch ◽  
Sebastian Wetterich ◽  
Thomas Opel
Keyword(s):  
Sea Level ◽  
Last Glacial Maximum ◽  
Glacial Maximum ◽  
Laptev Sea ◽  
Last Glacial ◽  
East Siberian Sea ◽  
The Last Glacial Maximum ◽  
The Laptev Sea ◽  
The Last Glacial

Reappraisal of sea-level lowstand during the Last Glacial Maximum observed in the Bonaparte Gulf sediments, northwestern Australia

2016 ◽  
Vol 397 ◽  
pp. 373-379 ◽  
Author(s):  
Takeshige Ishiwa ◽  
Yusuke Yokoyama ◽  
Yosuke Miyairi ◽  
Stephen Obrochta ◽  
Takenori Sasaki ◽  
...  
Keyword(s):  
Sea Level ◽  
Last Glacial Maximum ◽  
Glacial Maximum ◽  
Last Glacial ◽  
Northwestern Australia ◽  
The Last Glacial Maximum ◽  
The Last Glacial
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