Diatom-based tidal-level transfer functions as an aid in reconstructing Quaternary history of sea-level movements in the UK

1999 ◽  
Vol 14 (2) ◽  
pp. 153-167 ◽  
Author(s):  
Yongqiang Zong ◽  
Benjamin P. Horton
Keyword(s):  
Sea Level ◽  
Transfer Functions ◽  
Tidal Level ◽  
History Of ◽  
Quaternary History ◽  
The Uk

Note preliminaire sur le niveau marin de 3 m et les series dunaires de l'extreme sud de Madagascar

1957 ◽  
Vol S6-VII (1-3) ◽  
pp. 83-90
Author(s):  
Rene Battistini
Keyword(s):  
Sea Level ◽  
Preliminary Report ◽  
Present Knowledge ◽  
Dune Systems ◽  
History Of ◽  
Quaternary History

Abstract A preliminary report on Quaternary shore lines and dune systems of the extreme southern part of Madagascar. Consolidated beach deposits three meters above present sea level are attributed to a stillstand (here named the Karimbolian) which occurred prior to the pre-Flandrian regression. This three-meter level acts as a marker zone for identifying periods of dune formation. Present knowledge of the Quaternary history of the region is summed up in a table correlating climates, cycles of erosion and continental sedimentation, shore lines, and phases of dune formation.

The physical geography and geology of the estuary and Firth of Forth, Scotland

1987 ◽  
Vol 93 (3-4) ◽  
pp. 235-244 ◽  
Author(s):  
Michael A. E. Browne
Keyword(s):  
Sea Level ◽  
Late Quaternary ◽  
Physical Geography ◽  
Glacial Till ◽  
Estuarine Sediments ◽  
Volcanic Origin ◽  
Quaternary Glaciation ◽  
History Of ◽  
Quaternary History ◽  
Firth Of Forth

SynopsisThe Upper Palaeozoic bedrock, which is of sedimentary and volcanic origin, is briefly described. The origin of the Forth as a series of depressions in the bedrock surface probably owes much to erosion of a pre-existing Tertiary landscape during phases of Quaternary glaciation. The late Quaternary history of the area is described, relating the distribution of the sediments deposited in the Forth to climatic events and changes in relative sea-level. Since the acme of the last main glaciation about 20,000 years ago, late Devensian marine and estuarine sediments have been deposited on the underlying glacial till sheet at altitudes ranging from more than 120 m below O.D. to at least 46 m above O.D. Similarly, raised and buried beaches and their deposits occur at altitudes from 40 m above O.D. down to around 10 m below O.D. in the estuary. During the Flandrian, sea-level has fluctuated, reaching its maximum (about 11 to 15 m above O.D.) about 6500 years ago. The typical deposit of this period is the carse clay which forms a series of extensive, fertile raised mudflats around the estuary. The calcareous marine faunas of the carse clay and older deposits are outlined.

Retracing the Quaternary history of sea-level changes in the Spanish Mediterranean–Atlantic coasts: Geomorphological and sedimentological approach

Geomorphology ◽  
2013 ◽  
Vol 196 ◽  
pp. 36-49 ◽  
Author(s):  
C. Zazo ◽  
J.L. Goy ◽  
C.J. Dabrio ◽  
J. Lario ◽  
J.A. González-Delgado ◽  
...  
Keyword(s):  
Sea Level ◽  
Sea Level Changes ◽  
History Of ◽  
Quaternary History

Chapter 7 Quick clay behaviour in sensitive Quaternary marine clays – a UK perspective

2020 ◽  
Vol 29 (1) ◽  
pp. 205-221 ◽  
Author(s):  
David Peter Giles
Keyword(s):  
Shear Strength ◽  
Depositional Processes ◽  
Velocity Flow ◽  
Highly Sensitive ◽  
Quick Clay ◽  
Flow Slides ◽  
History Of ◽  
Quaternary History ◽  
The Uk ◽  
Marine Clays

AbstractThe term quick clay has been used to denote the behaviour of highly sensitive Quaternary marine clays that, due to post depositional processes, have the tendency to change from a relatively stiff condition to a liquid mass when disturbed. On failure these marine clays can rapidly mobilise into high velocity flow slides and spreads often completely liquefying in the process. For a clay to be defined as potentially behaving as a quick clay in terms of its geotechnical parameters it must have a sensitivity (the ratio of undisturbed to remoulded shear strength) of greater than 30 together with a remoulded shear strength of less than 0.5 kPa. The presence of quick clays in the UK is unclear, but the Quaternary history of the British islands suggests that the precursor conditions for their formation could be present and should be considered when undertaking construction in the coastal zone.

Late Quaternary history of the Mackenzie–Beaufort region, Arctic Canada, from modelling of permafrost temperatures. 1. The onshore–offshore transition

1996 ◽  
Vol 33 (1) ◽  
pp. 52-61 ◽  
Author(s):  
Alan E. Taylor ◽  
Scott R. Dallimore ◽  
S. I. Outcalt
Keyword(s):  
Sea Level ◽  
Late Quaternary ◽  
Marine Transgression ◽  
Thermokarst Lakes ◽  
History Of ◽  
Quaternary History ◽  
Deep Temperature ◽  
Depth Gradients ◽  
Drill Holes ◽  
Temperature Depth

Five offshore drill holes northeast of Richards Island reveal permafrost conditions, which are interpreted in terms of the sea-level and paleoenvironmental history of the Canadian Beaufort Shelf. The top of ice-bonded permafrost lies 76–88 m below the seabed within 12 km of the shore, 11 m below the seabed 20 km offshore, and at 60 m some 50 km offshore. The base of permafrost is 500 m to over 700 m deep. Temperature–depth gradients are negative or nearly isothermal, and permafrost is degrading. Geothermal modelling of the temperatures and permafrost observations indicates that the sites were subaerially exposed throughout most of the Wisconsinan, and during the early Holocene. Three sites 2–10 km from the present shoreline experienced inundation at 3.5–4.0 ka. These times support dates of marine transgression predicted by the sea-level curve, but the sites may have been occupied by thermokarst lakes prior to transgression. In contrast, the site 20 km offshore with shallow ice bonding was inundated about 0.4 ka; this area may have persisted as an island until recently. Shoals observed nearby may be analogues of this process, being outliers that are now being eroded below sea level. Marine transgression occurred about 6 ka some 50 km offshore.

The Film World’s Cooperative Store: Institutions and Films of the 1930s and 1940s

2018 ◽  
Author(s):  
C. Claire Thomson
Keyword(s):  
World War Ii ◽  
Meat Products ◽  
Public Information ◽  
Early History ◽  
World War ◽  
International Context ◽  
German Occupation ◽  
History Of ◽  
The Uk ◽  
The Impact

This chapter traces the early history of state-sponsored informational filmmaking in Denmark, emphasising its organisation as a ‘cooperative’ of organisations and government agencies. After an account of the establishment and early development of the agency Dansk Kulturfilm in the 1930s, the chapter considers two of its earliest productions, both process films documenting the manufacture of bricks and meat products. The broader context of documentary in Denmark is fleshed out with an account of the production and reception of Poul Henningsen’s seminal film Danmark (1935), and the international context is accounted for with an overview of the development of state-supported filmmaking in the UK, Italy and Germany. Developments in the funding and output of Dansk Kulturfilm up to World War II are outlined, followed by an account of the impact of the German Occupation of Denmark on domestic informational film. The establishment of the Danish Government Film Committee or Ministeriernes Filmudvalg kick-started aprofessionalisation of state-sponsored filmmaking, and two wartime public information films are briefly analysed as examples of its early output. The chapter concludes with an account of the relations between the Danish Resistance and an emerging generation of documentarists.

Phanerozoic Oxygen

2017 ◽  
Author(s):  
Donald Eugene Canfield
Keyword(s):  
Oxygen Consumption ◽  
Organic Carbon ◽  
Sea Level ◽  
Time Scale ◽  
Atmospheric Oxygen ◽  
Sea Level Change ◽  
Oxygen Production ◽  
Level Change ◽  
History Of ◽  
Geologic Processes

This chapter discusses the modeling of the history of atmospheric oxygen. The most recently deposited sediments will also be the most prone to weathering through processes like sea-level change or uplift of the land. Thus, through rapid recycling, high rates of oxygen production through the burial of organic-rich sediments will quickly lead to high rates of oxygen consumption through the exposure of these organic-rich sediments to weathering. From a modeling perspective, rapid recycling helps to dampen oxygen changes. This is important because the fluxes of oxygen through the atmosphere during organic carbon and pyrite burial, and by weathering, are huge compared to the relatively small amounts of oxygen in the atmosphere. Thus, all of the oxygen in the present atmosphere is cycled through geologic processes of oxygen liberation (organic carbon and pyrite burial) and consumption (weathering) on a time scale of about 2 to 3 million years.

Sign in / Sign up

Export Citation Format

Share Document