The Eburonian (german: Eburon or ''Eburonium''), or, much less commonly, the Eburonian Stage, is a glacial complex in the Calabrian age of the

Pleistocene The Pleistocene ( , often referred to as the ''Ice age'') is the geological Epoch (geology), epoch that lasted from about 2,580,000 to 11,700 years ago, spanning the Earth's most recent period of repeated glaciations. Before a change was fina ...

epoch In chronology and periodization, an epoch or reference epoch is an instant in time chosen as the origin of a particular calendar era. The "epoch" serves as a reference point from which time is measured. The moment of epoch is usually decided by ...

and lies between the

Tegelen Tegelen ( li, Tegele) is a village in the municipality of Venlo, situated in the Netherlands. It was an independent municipality until 2001, when it was merged into the municipality of Venlo. Tiglian The name of the glacial stage of Tiglian (pa ...

and the

Waalian interglacial The Waalian interglacial (german: Waal-Warmzeit or ''Waal-Interglazial'') or Waalian Stage was an interglacial period of the Early Pleistocene in north-west Europe. It was preceded by the Eburonian Stage and succeeded by the Menapian Stage. It co ...

. The transition from the Tegelen to the Eburonian started about 1.78 million years ago, lasted 480,000 years (to 1.3 million years ago). In geologic strata, at its base, from its startpoint, the

Neogene The Neogene ( ), informally Upper Tertiary or Late Tertiary, is a geologic period and system that spans 20.45 million years from the end of the Paleogene Period million years ago ( Mya) to the beginning of the present Quaternary Period Mya. ...

underlies different

Gelasian The Gelasian is an age (geology), age in the international geologic timescale or a stage (stratigraphy), stage in chronostratigraphy, being the earliest or lowest subdivision of the Quaternary Period/System and Pleistocene Epoch/Series. It spans ...

deposits starkly in much of the

Netherlands ) , anthem = ( en, "William of Nassau") , image_map = , map_caption = , subdivision_type = Sovereign state , subdivision_name = Kingdom of the Netherlands , established_title = Before independence , established_date = Spanish Netherl ...

.Hey, R. W. ''The Plio-Pleistocene of England and Iceland'' in Van Couvering, John A. (editor), (1997) ''The Pleistocene Boundary and the Beginning of the Quaternary'', Cambridge, Cambridge University Press, p. 183. .

Discovery

As early as the 1920s, the names of the three well known glaciations - the

Elster Elster may refer to: Places * Black Elster (''Schwarze Elster''), a river in Germany * White Elster (''Weiße Elster''), a river in Germany and the Czech Republic ** Elster Viaduct, a railway bridge over the White Elster ** Elster Viaduct (Pirk) ...

, the

Saale The Saale (), also known as the Saxon Saale (german: Sächsische Saale) and Thuringian Saale (german: Thüringische Saale), is a river in Germany and a left-bank tributary of the Elbe. It is not to be confused with the smaller Fränkische Saale, ...

and the

Weichselian The Weichselian glaciation was the last glacial period and its associated glaciation in northern parts of Europe. In the Alpine region it corresponds to the Würm glaciation. It was characterized by a large ice sheet (the Fenno-Scandian ice sheet) ...

- had become established at the recommendation of Konrad Keilhack and Paul Woldstedt. After Penck & Brückner successfully identified a fourth glaciation in the

Alps The Alps () ; german: Alpen ; it, Alpi ; rm, Alps ; sl, Alpe . are the highest and most extensive mountain range system that lies entirely in Europe, stretching approximately across seven Alpine countries (from west to east): France, Sw ...

, there were many attempts to find traces of this ice age in the northern Central Europe. Investigations in the

, into both

sedimentology Sedimentology encompasses the study of modern sediments such as sand, silt, and clay, and the processes that result in their formation (erosion and weathering), transport, deposition and diagenesis. Sedimentologists apply their understanding of mo ...

and

vegetation Vegetation is an assemblage of plant species and the ground cover they provide. It is a general term, without specific reference to particular taxa, life forms, structure, spatial extent, or any other specific botanical or geographic character ...

, revealed that the number of cold and warm periods must have been considerably greater. In 1957 Zagwijn expanded the hitherto known

glacial A glacial period (alternatively glacial or glaciation) is an interval of time (thousands of years) within an ice age that is marked by colder temperatures and glacier advances. Interglacials, on the other hand, are periods of warmer climate betw ...

s and

interglacial An interglacial period (or alternatively interglacial, interglaciation) is a geological interval of warmer global average temperature lasting thousands of years that separates consecutive glacial periods within an ice age. The current Holocene in ...

s (the

Eemian The Eemian (also called the last interglacial, Sangamonian, Sangamonian Stage, Ipswichian, Mikulin, Kaydaky, penultimate,NOAA - Penultimate Interglacial Period http://www.ncdc.noaa.gov/global-warming/penultimate-interglacial-period Valdivia or Ri ...

Saalian The Saale glaciation or Saale Glaciation, sometimes referred to as the Saalian glaciation, Saale cold period (german: Saale-Kaltzeit), Saale complex (''Saale-Komplex'') or Saale glacial stage (''Saale-Glazial'', colloquially also the ''Saale-Eiszei ...

Holstein Holstein (; nds, label=Northern Low Saxon, Holsteen; da, Holsten; Latin and historical en, Holsatia, italic=yes) is the region between the rivers Elbe and Eider. It is the southern half of Schleswig-Holstein, the northernmost state of German ...

and

Cromer Cromer ( ) is a coastal town and civil parish on the north coast of the English county of Norfolk. It is north of Norwich, north-northeast of London and east of Sheringham on the North Sea coastline. The local government authorities are Nor ...

) by the Menapian glacial,

, Eburonian glacial, Tegelen interglacial and Pre-Tegelen glacial. After the initial view that there had been continuous warm or cold periods, it quickly became clear that we were looking at "complexes" that included both warm and cold periods. The Eburonian was subdivided into four cold periods, each separated from one another by warmer periods.

Climate & vegetation

Very little is known about the development of the climate and vegetation during the Eburonian. The cold period is subdivided into 7 climatic sections, which differ in their average temperatures. As in the cold periods of the Menapian glacial and the Tegelen interglacial, the average temperature of the Eburonian in summer was about ca. 10 °C and the average annual temperature was -6 to -4 °C. During the warmer sections of the Eburonian, the land was covered by cool coniferous forests; during the cold periods the vegetation was open and treeless.

References

Literature

* Ehlers, Jürgen: Allgemeine und historische Quartärgeologie / Stuttgart: Ferdinand Enke Verlag, 1994 * Liedtke, Herbert: Eiszeitforschung / Darmstadt: Wissenschaftliche Buchgesellschaft,1990

External links

Synoptisches Profil durch das Quartär von Sachsen Anhalt
(Litt und Wansa 1996) {{North German glaciations Cenozoic Quaternary geochronology Ice ages Pleistocene Geology of the Netherlands

Discovery

Climate & vegetation

See also

References

Literature

External links