Timeline of glaciation

There have been five or six major ice ages in the history of Earth over the past 3 billion years. The Late Cenozoic Ice Age began 34 million years ago, its latest phase being the Quaternary glaciation, in progress since 2.58 million years ago.

Within ice ages, there exist periods of more severe glacial conditions and more temperate conditions, referred to as glacial periods and interglacial periods, respectively. The Earth is currently in such an interglacial period of the Quaternary glaciation, with the Last Glacial Period of the Quaternary having ended approximately 11,700 years ago. The current interglacial is known as the Holocene epoch. Based on climate proxies, paleoclimatologists study the different climate states originating from glaciation.

Known ice ages

Name of ice age	Years BP (Ma)	Geological period	Era
Pongola	2900–2780		Mesoarchean
Huronian	2400–2100	Siderian Rhyacian	Paleoproterozoic
Sturtian Marinoan Gaskiers Baykonur	715–680 650–635 580 547	Cryogenian Ediacaran	Neoproterozoic
Andean-Saharan (incl. Hirnantian and Late Ordovician glaciation)	450–420	Late Ordovician Silurian	Paleozoic
Karoo	360–289	Carboniferous Permian	Paleozoic
Late Cenozoic Ice Age (incl. Quaternary glaciation)	34–present	Late Paleogene Neogene Quaternary	Cenozoic

Descriptions

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Quaternary ice age*

(million years ago)

*Ice Ages

The third ice age, and possibly most severe, is estimated to have occurred from 720 to 635 Ma (million years) ago, in the Neoproterozoic Era, and it has been suggested that it produced a second "Snowball Earth", i.e. a period during which Earth was completely covered in ice. It has also been suggested that the end of that second cold period was responsible for the subsequent Cambrian explosion, a time of rapid diversification of multi-cellular life during the Cambrian Period. The hypothesis is still controversial, though is gaining credence among researchers, as evidence in its favour has mounted.

A minor series of glaciations occurred from 460 to 430 Ma, and there were extensive glaciations from 350 to 289 Ma.

The Late Cenozoic Ice Age has seen extensive ice sheets in Antarctica for the last 34 Ma. During the last 3 Ma, ice sheets have also developed on the northern hemisphere. That phase is known as the Quaternary glaciation, and was marked by more or less extensive glaciation. They first appeared with a dominant frequency of 41,000 years, but after the Mid-Pleistocene Transition that changed to high-amplitude cycles, with an average period of 100,000 years.

Nomenclature of Quaternary glacial cycles

Whereas the first 30 million years of the Late Cenozoic Ice Age mostly involved Antarctica, the Quaternary has seen numerous ice sheets extending over parts of Europe and North America that are currently populated and easily accessible. Early geologists therefore named apparent sequences of glacial and interglacial periods of the Quaternary Ice Age after characteristic geological features, and these names varied from region to region. The marine record preserves all the past glaciations; the land-based evidence is less complete because successive glaciations may wipe out evidence of their predecessors. Ice cores from continental ice accumulations also provide a complete record, but do not go as far back in time as marine data. Pollen data from lakes and bogs as well as loess profiles provided important land-based correlation data. The names system has mostly been phased out by professionals. It is now more common for researchers to refer to the periods by their marine isotopic stage number. For example, there are five Pleistocene glacial/interglacial cycles recorded in marine sediments during the last half million years, but only three classic glacials were originally recognized on land during that period (Mindel, Riss and Würm).

Land-based evidence works acceptably well back as far as MIS 6, but it has been difficult to coordinate stages using just land-based evidence before that. Hence, the "names" system is incomplete and the land-based identifications of ice ages previous to that are somewhat conjectural. Nonetheless, land based data is essentially useful in discussing landforms, and correlating the known marine isotopic stage with them.

Historical nomenclature in the Alps

Biber (2.6–1.8 Ma, Gelasian)
Biber-Danube interglacial (not in use)
Danube (1.8–1.0 Ma, Calabrian)
Danube-Gunz interglacial (not in use)
Günz (1.0–0.4 Ma, MIS 21 – MIS 11 ?)
Günz-Haslach interglacial (not in use)
Haslach (seldom used)
Haslach-Mindel interglacial (not in use)
Mindel (MIS 12?, MIS 10)
Mindel-Riss interglacial (MIS 9)
Riss (MIS 8-6)
Riss-Würm interglacial (MIS 5e)
Würm (MIS 5d-2)

Historical nomenclature in Great Britain and Ireland

Bramertonian Stage
Baventian Stage/Pre-Pastonian
Pastonian Stage
Beestonian stage
Cromerian Stage (MIS 21-13 ?)
Anglian Stage (MIS 12, perhaps also MIS 10 ?)
Hoxnian Stage (MIS 11, perhaps also MIS 9 ?)
Wolstonian Stage (MIS 8–6, perhaps also MIS 10–9 ?)
Ipswichian interglacial (MIS 5e)
Devensian glaciation (MIS 5d-2)
Flandrian interglacial (MIS 1)

Historical nomenclature in Northern Europe

Pre-Tiglian
Tiglian interglacial
Eburonian
Waalian interglacial
Menapian glacial stage
Bavelian
Cromerian complex (MIS 21-13 ?)
Elster glaciation (MIS 10, perhaps also MIS 12 ?)
Holstein interglacial (MIS 9 ?)
Saale glaciation (ended with MIS 6)
Eem interglacial (MIS 5e)
Weichsel glaciation (MIS 5d-2)

Historical nomenclature in North America

Nebraskan glaciation (replaced by Pre-Illinoian in modern scientific literature)
Aftonian interglacial (replaced by Pre-Illinoian in modern scientific literature)
Kansan glaciation (replaced by Pre-Illinoian in modern scientific literature)
Yarmouthian (stage) (replaced by Pre-Illinoian in modern scientific literature)
Illinoian stage (MIS 6)
Sangamonian (MIS 5e, sometimes also 5d-5a)
Wisconsin glaciation (MIS 4-2, sometimes also 5d-5a)

Historical nomenclature in South America

Caracoles (Río Frío) glaciation
Río Llico (Colegual) glaciation
Santa María (Casma) glaciation
Valdivia interglacial (MIS 5e)
Llanquihue glaciation (at least MIS 4-2)

Uncertain correlations

It has proved difficult to correlate the traditional regional names with the global marine and ice core sequences. The indexes of MIS often identify several distinct glaciations that overlap in time with a single traditional regional glaciation. Some modern authors use the traditional regional glacial names to identify such a sequence of glaciations, whereas others replace the word "glaciation" with "complex" to refer to a continuous period of time that also includes warmer stages. As shown in the table below, it is only during the last 200-300 thousand years that the time resolution of the traditional nomenclature allow for clear correspondence with MIS indexes. In particular there has been a lot of controversy regarding the glaciations MIS 10 and MIS 12, and their correspondence to the Elster and Mindel glaciations of Europe.

Marine isotope stage	Time ago (ka)	Regional names						Global age / epoch
Marine isotope stage	Time ago (ka)	Alpine region	Great Britain	N. Europe	E. Europe	N. America	S. America	Global age / epoch
MIS 103-64	2600–1800	Biber	Pre-Ludham Ludham Thurnian Bramerton Bavents Paston	Pre-Tiglian Tiglian A Tiglian B Tiglian C3 Tiglian C4 Tiglian C5	Verkhodon Khapry	Pre-illinois K Pre-illinois J		Gelasian
MIS 63-23	1800–900	Danube	Beeston	Eburon Waal Menap Bavel	Tolucheevka Krinitsa	Pre-illinois I Pre-illinois H Pre-illinois G		Calabrian
MIS 22	900–866	Günz	Cromer	Cromer		Pre-illinois F
MIS 21	866–814	Günz	Cromer	Cromer		Pre-illinois
MIS 20	814–790	Günz	Cromer	Cromer		Pre-illinois E ?
MIS 19	790–761	Günz	Cromer	Cromer		Pre-illinois		Chibanian
MIS 18	761-712	Günz	Cromer	Cromer		Pre-illinois E ?
MIS 17	712-676	Günz	Cromer	Cromer		Pre-illinois
MIS 16	676–621	Günz	Cromer	Cromer/Don	Don	Pre-illinois D
MIS 15	621–563	Günz	Cromer	Cromer	Muchkap	Pre-illinois
MIS 14	563–533	Günz	Cromer	Cromer	Oka?	Pre-illinois C
MIS 13	533–478	Günz	Cromer	Cromer	Oka?	Pre-illinois
MIS 12	478–424	Günz Mindel?	Anglia	Elster Cromer?	Oka	Pre-illinois B	Caracoles Río Frío?
MIS 11	424–374	Günz?	Hoxne	Holstein Cromer/Rhume?	Likhvin	Pre-illinois
MIS 10	374–337	Mindel?	Wolston	Elster?	Likhvin?	Pre-illinois A ?	Río Llico Colegual?
MIS 9	337–300	Mindel-Riss?	Wolston Purfleet	Holstein?	Likhvin	Pre-illinois
MIS 8	300–243	Riss	Wolston	Saale/Fuhne	AC	Pre-illinois A ?
MIS 7	243–191	Riss	Wolston Aveley	Saale/Dömnitz Belvedere	AC	Pre-illinois
MIS 6	191–130	Riss	Wolston	Saale/Drenthe,Warthe	Dnieper/Moscow	Illinois	Santa María Casma?
MIS 5e	123 (peak)	Riss-Würm	Ipswich	Eem	Mikulino	Sangamonian	Valdivia	Late Pleistocene ('Tarantian')
MIS 5d	109 (peak)	Würm	Devens/Early D.	Weichsel/Herning	Valdai	AC	AC
MIS 5c	96 (peak)	Würm	Devens/Early D.	Weichsel/Brørup	Valdai	AC	AC
MIS 5b	87 (peak)	Würm	Devens/Early D.	Weichsel/Rederstall	Valdai	AC	AC
MIS 5a	82 (peak)	Würm	Devens/Early D.	Weichsel/Odderade	Valdai	AC	AC
MIS 4	71–57	Würm	Devens/Middle D.	Weichsel/Middle W.	Valdai	Wisconsin	Llanquihue
MIS 3	57–29	Würm	Devens/Middle D.	Weichsel/Middle W.	Valdai	Wisconsin	Llanquihue
MIS 2	29–14	Würm/LGM	Devens/Dimlington	Weichsel/LGM	Valdai	Wisconsin/Vashon	Llanquihue/LGM
MIS 1	14–present	(Holocene)	Flandria	Flandria (Holocene)		(Holocene)	(Holocene)	Holocene

Table explanation
Extensive interglacial (similar to Holocene)
Moderate interglacial
Intermediate climate
Moderate glaciation
Extensive glaciation (similar to LGM)
AC = Ambiguous correlation

Sources

For sources to the tables, see the individual linked articles.

References

^ Walker, M., Johnsen, S., Rasmussen, S. O., Popp, T., Steffensen, J.-P., Gibbard, P., Hoek, W., Lowe, J., Andrews, J., Bjo¨ rck, S., Cwynar, L. C., Hughen, K., Kershaw, P., Kromer, B., Litt, T., Lowe, D. J., Nakagawa, T., Newnham, R., and Schwander, J. 2009. Formal definition and dating of the GSSP (Global Stratotype Section and Point) for the base of the Holocene using the Greenland NGRIP ice core, and selected auxiliary records. J. Quaternary Sci., Vol. 24 pp. 3–17. ISSN 0267-8179.
^ Robert E. Kopp; Joseph L. Kirschvink; Isaac A. Hilburn & Cody Z. Nash (2005). "The Paleoproterozoic snowball Earth: A climate disaster triggered by the evolution of oxygenic photosynthesis". Proc. Natl. Acad. Sci. U.S.A. 102 (32): 11131–6. Bibcode:2005PNAS..10211131K. doi:10.1073/pnas.0504878102. PMC 1183582. PMID 16061801.
^ "Chart". International Commission on Stratigraphy. Archived from the original on 2017-01-13. Retrieved 2017-02-14.
^ ^a ^b Miracle Planet: Snowball Earth, (2005) documentary, Canadian Film Board, rebroadcast 25 April 2009 on the Science Channel (HD).
^ van Andel, Tjeerd H. (1994). New Views on an Old Planet: A History of Global Change (2nd ed.). Cambridge UK: Cambridge University Press. ISBN 978-0-521-44755-3.
^ Rieu, Ruben; et al. (2007). "Climatic cycles during a Neoproterozoic "snowball" glacial epoch". Geology. 35 (4): 299–302. Bibcode:2007Geo....35..299R. doi:10.1130/G23400A.1.
^ "The Cambrian Period". ucmp.berkeley.edu. Retrieved 2024-02-26.
^ Brovkin, V.; Calov, R.; Ganopolski, A.; Willeit, M. (April 2019). "Mid-Pleistocene transition in glacial cycles explained by declining CO2 and regolith removal | Science Advances". Science Advances. 5 (4): eaav7337. doi:10.1126/sciadv.aav7337. PMC 6447376. PMID 30949580.
^ ^a ^b Davis, Owen K. "Non-Marine Records: Correlations with the Marine Sequence". Introduction to Quaternary Ecology. University of Arizona. Archived from the original on 2017-07-27.
^ Gibbard, P.; van Kolfschoten, T. (2004). "Chapter 22: The Pleistocene and Holocene Epochs" (PDF). In Gradstein, F. M.; Ogg, James G.; Smith, A. Gilbert (eds.). A Geologic Time Scale 2004. Cambridge: Cambridge University Press. ISBN 978-0-521-78142-8.
^ Kukla, George (August 2005). "Saalian supercycle, Mindel/Riss interglacial and Milankovitch's dating". Quaternary Science Reviews. 24 (14–15): 1573–83. Bibcode:2005QSRv...24.1573K. doi:10.1016/j.quascirev.2004.08.023.
^ "Menapian Glacial Stage | geology".
^ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ Porter, S.C. (1981). "Pleistocene glaciation in the southern Lake District of Chile". Quaternary Research. 16 (3): 263–292. Bibcode:1981QuRes..16..263P. doi:10.1016/0033-5894(81)90013-2. S2CID 140544020.
^ Böse; et al. (2012). "Quaternary Glaciations of Northern Europe". Quaternary Science Reviews (44): 17. CiteSeerX 10.1.1.734.1691.
^ Lisiecki, Lorraine E.; Raymo, Maureen E. (2005). "A Pliocene-Pleistocene stack of 57 globally distributed benthic δ18O records". Paleoceanography. 20 (1): n/a. Bibcode:2005PalOc..20.1003L. doi:10.1029/2004PA001071. hdl:2027.42/149224. S2CID 12788441.
^ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ ^j ^k ^l ^m ⁿ ^o ^p ^q ^r ^s ^t ^u ^v ^w ^x ^y ^z ^aa ^ab ^ac ^ad ^ae ^af ^ag ^ah ^ai ^aj ^ak ^al ^am ^an German Stratigraphic Commission: Stratigraphische Tabelle von Deutschland 2016
^ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ ^j ^k ^l ^m ⁿ ^o ^p ^q ^r ^s ^t ^u ^v ^w ^x ^y ^z ^aa ^ab Subcommission on Quaternary Stratigraphy, Global chronostratigraphical correlation table for the last 2.7 million years, v. 2011
^ ^a ^b ^c ^d ^e ^f Kasse (1993), Periglacial environments and climate development during Early Pleistocene Tiglian stage (Beerse Glacial) in northern Belgium, Geologie en Mijnbouw 72, 107-123, Kluwer
^ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ ^j ^k Lee et al. (2011), The Glacial History of the British Isles during the early and Middle Pleistocene: Implications for the long-term development of the British Ice Sheet, Quaternary Glaciations-Extent and Chronology, pages 59-74, Elsevier.
^ "North West European Rivers 3: Don Glaciation (Donian Stage)". University of Cambridge: Quaternary Palaeoenvironments Group.
^ ^a ^b ^c ^d ^e ^f Böse; et al. (2012). "Quaternary Glaciations of Northern Europe". Quaternary Science Reviews. 44 (44): 1–25. Bibcode:2012QSRv...44....1B. CiteSeerX 10.1.1.734.1691. doi:10.1016/j.quascirev.2012.04.017.
^ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ ^j Velichko; et al. (2004). "Glaciations of the East European Plain – distribution and chronology". In Ehlers, J.; Gibbard, P.L. (eds.). Quaternary Glaciations – Extent and Chronology. Elsevier. pp. 337–354. ISBN 9780080540146.
^ Stratigraphische Tabellen des Bayerischen Geologischen Landesamtes. Ad hoc AG Geologie der Staatlichen Geologischen Dienste (SGD) and the BGR
^ ^a ^b ^c Velichko, A. A.; Wright, Herbert Edgar (2005). Cenozoic Climatic and Environmental Changes in Russia. Geological Society of America. p. 53. ISBN 9780813723822.
^ ^a ^b "Timescale of the Ice Age in Essex" (PDF). GeoEssex. Archived from the original (PDF) on 2 April 2019.
^ Kolfschoten, Thijs van; Roebroeks, W.; Vandenberghe, J. (January 1993). "The middle and late Pleistocene and climate sequence at Maastricht-Belvedere - the type locality of the Belvedere interglacial". Mededelingen Rijks Geologische Dienst (47): 81–91.
^ McKay, E.D., 2007, Six Rivers, Five Glaciers, and an Outburst Flood: the Considerable Legacy of the Illinois River. Proceedings of the 2007 Governor's Conference on the Management of the Illinois River System: Our continuing Commitment, 11th Biennial Conference, Oct. 2-4, 2007, 11 p.
^ ^a ^b ^c ^d ^e ^f Delaney, Catherine (2003). "The Last Glacial Stage (the Devensian) in Northwest England" (PDF). North West Geography. 3 (2): 27–37. ISSN 1476-1580.
^ ^a ^b ^c ^d ^e ^f Lokrantz, Hanna; Sohlenius, Gustav (2006). Ice marginal fluctuations during the Weichselian glaciation in Fennoscandia, a literature review (Technical Report TR-06-36) (PDF). Stockholm: Svensk Kärnbränslehantering AB (Swedish Nuclear Fuel and Waste Management Co).

External links

The dictionary definition of glaciation at Wiktionary

Aber, J.S. (2006). "Regional Glaciation of Kansas and Nebraska". Emporia KS: Emporia State University.
Work Group on Geospatial Analysis of Glaciated Environments (GAGE) (2000). "Pre-Wisconsin Glaciation of Central North America". Emporia KS: INQUA Commission on Glaciation, Emporia State University. Archived from the original on May 13, 2008.
Subcommission on Quaternary Stratigraphy (2011). "Global correlation tables for the Quaternary". Cambridge UK: Department of Geography, University of Cambridge.
Gibbard, P.L.; Boreham, S.; Cohen, K.M.; Moscariello, A. (2011). "Global chronostratigraphical correlation table for the last 2.7 million years v. 2011". Cambridge UK: Subcommission on Quaternary Stratigraphy, Department of Geography, University of Cambridge.
Hambrey, M.J.; Harland, W.B., eds. (1981). Earth's pre-Pleistocene glacial record. Cambridge University Press. Archived from the original on October 11, 2006. 1004 + xv pp. (book downloadable as series of PDF files)
Silva, P.G.; Zazo,C; Bardají,T.; Baena, J.; Lario, J.; Rosas, A.; Van der Made (2009). "Tabla Cronoestratigráfica del Cuaternario AEQUA V.2" (PDF). Departamento de Geología, Universidad de Salamanca, Spain: Asociación Española para el Estudio del Cuaternario (AEQUA). Archived from the original (PDF 3.6 Mb) on 2012-06-26. (Correlation Chart of European Quaternary and cultural stages and fossils)

[Walker,_M._2009._pp._3-1] Walker, M., Johnsen, S., Rasmussen, S. O., Popp, T., Steffensen, J.-P., Gibbard, P., Hoek, W., Lowe, J., Andrews, J., Bjo¨ rck, S., Cwynar, L. C., Hughen, K., Kershaw, P., Kromer, B., Litt, T., Lowe, D. J., Nakagawa, T., Newnham, R., and Schwander, J. 2009. Formal definition and dating of the GSSP (Global Stratotype Section and Point) for the base of the Holocene using the Greenland NGRIP ice core, and selected auxiliary records. J. Quaternary Sci., Vol. 24 pp. 3–17. ISSN 0267-8179.

[Kopp-2] Robert E. Kopp; Joseph L. Kirschvink; Isaac A. Hilburn & Cody Z. Nash (2005). "The Paleoproterozoic snowball Earth: A climate disaster triggered by the evolution of oxygenic photosynthesis". Proc. Natl. Acad. Sci. U.S.A. 102 (32): 11131–6. Bibcode:2005PNAS..10211131K. doi:10.1073/pnas.0504878102. PMC 1183582. PMID 16061801.

[SG-20170113-3] "Chart". International Commission on Stratigraphy. Archived from the original on 2017-01-13. Retrieved 2017-02-14.

[2nd_of_two-4] Miracle Planet: Snowball Earth, (2005) documentary, Canadian Film Board, rebroadcast 25 April 2009 on the Science Channel (HD).

[5] van Andel, Tjeerd H. (1994). New Views on an Old Planet: A History of Global Change (2nd ed.). Cambridge UK: Cambridge University Press. ISBN 978-0-521-44755-3.

[6] Rieu, Ruben; et al. (2007). "Climatic cycles during a Neoproterozoic "snowball" glacial epoch". Geology. 35 (4): 299–302. Bibcode:2007Geo....35..299R. doi:10.1130/G23400A.1.

[7] "The Cambrian Period". ucmp.berkeley.edu. Retrieved 2024-02-26.

[Willeit-8] Brovkin, V.; Calov, R.; Ganopolski, A.; Willeit, M. (April 2019). "Mid-Pleistocene transition in glacial cycles explained by declining CO2 and regolith removal | Science Advances". Science Advances. 5 (4): eaav7337. doi:10.1126/sciadv.aav7337. PMC 6447376. PMID 30949580.

[Davis-9] Davis, Owen K. "Non-Marine Records: Correlations with the Marine Sequence". Introduction to Quaternary Ecology. University of Arizona. Archived from the original on 2017-07-27.

[Gibbard-10] Gibbard, P.; van Kolfschoten, T. (2004). "Chapter 22: The Pleistocene and Holocene Epochs" (PDF). In Gradstein, F. M.; Ogg, James G.; Smith, A. Gilbert (eds.). A Geologic Time Scale 2004. Cambridge: Cambridge University Press. ISBN 978-0-521-78142-8.

[11] Kukla, George (August 2005). "Saalian supercycle, Mindel/Riss interglacial and Milankovitch's dating". Quaternary Science Reviews. 24 (14–15): 1573–83. Bibcode:2005QSRv...24.1573K. doi:10.1016/j.quascirev.2004.08.023.

[12] "Menapian Glacial Stage | geology".

[Porter81-13] ^ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ Porter, S.C. (1981). "Pleistocene glaciation in the southern Lake District of Chile". Quaternary Research. 16 (3): 263–292. Bibcode:1981QuRes..16..263P. doi:10.1016/0033-5894(81)90013-2. S2CID 140544020.

[14] Böse; et al. (2012). "Quaternary Glaciations of Northern Europe". Quaternary Science Reviews (44): 17. CiteSeerX 10.1.1.734.1691.

[15] Lisiecki, Lorraine E.; Raymo, Maureen E. (2005). "A Pliocene-Pleistocene stack of 57 globally distributed benthic δ18O records". Paleoceanography. 20 (1): n/a. Bibcode:2005PalOc..20.1003L. doi:10.1029/2004PA001071. hdl:2027.42/149224. S2CID 12788441.

[STD_2016-16] ^ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ ^j ^k ^l ^m ⁿ ^o ^p ^q ^r ^s ^t ^u ^v ^w ^x ^y ^z ^aa ^ab ^ac ^ad ^ae ^af ^ag ^ah ^ai ^aj ^ak ^al ^am ^an German Stratigraphic Commission: Stratigraphische Tabelle von Deutschland 2016

[Corr_2011-17] ^ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ ^j ^k ^l ^m ⁿ ^o ^p ^q ^r ^s ^t ^u ^v ^w ^x ^y ^z ^aa ^ab Subcommission on Quaternary Stratigraphy, Global chronostratigraphical correlation table for the last 2.7 million years, v. 2011

[Kasse-18] ^ ^a ^b ^c ^d ^e ^f Kasse (1993), Periglacial environments and climate development during Early Pleistocene Tiglian stage (Beerse Glacial) in northern Belgium, Geologie en Mijnbouw 72, 107-123, Kluwer

[Lee_2011-19] ^ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ ^j ^k Lee et al. (2011), The Glacial History of the British Isles during the early and Middle Pleistocene: Implications for the long-term development of the British Ice Sheet, Quaternary Glaciations-Extent and Chronology, pages 59-74, Elsevier.

[20] "North West European Rivers 3: Don Glaciation (Donian Stage)". University of Cambridge: Quaternary Palaeoenvironments Group.

[Böse_2012-21] ^ ^a ^b ^c ^d ^e ^f Böse; et al. (2012). "Quaternary Glaciations of Northern Europe". Quaternary Science Reviews. 44 (44): 1–25. Bibcode:2012QSRv...44....1B. CiteSeerX 10.1.1.734.1691. doi:10.1016/j.quascirev.2012.04.017.

[Velichko_2004-22] ^ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ ^j Velichko; et al. (2004). "Glaciations of the East European Plain – distribution and chronology". In Ehlers, J.; Gibbard, P.L. (eds.). Quaternary Glaciations – Extent and Chronology. Elsevier. pp. 337–354. ISBN 9780080540146.

[BGR_2016-23] Stratigraphische Tabellen des Bayerischen Geologischen Landesamtes. Ad hoc AG Geologie der Staatlichen Geologischen Dienste (SGD) and the BGR

[Velichko_2005-24] Velichko, A. A.; Wright, Herbert Edgar (2005). Cenozoic Climatic and Environmental Changes in Russia. Geological Society of America. p. 53. ISBN 9780813723822.

[Essex-25] "Timescale of the Ice Age in Essex" (PDF). GeoEssex. Archived from the original (PDF) on 2 April 2019.

[26] Kolfschoten, Thijs van; Roebroeks, W.; Vandenberghe, J. (January 1993). "The middle and late Pleistocene and climate sequence at Maastricht-Belvedere - the type locality of the Belvedere interglacial". Mededelingen Rijks Geologische Dienst (47): 81–91.

[McKay2007-27] McKay, E.D., 2007, Six Rivers, Five Glaciers, and an Outburst Flood: the Considerable Legacy of the Illinois River. Proceedings of the 2007 Governor's Conference on the Management of the Illinois River System: Our continuing Commitment, 11th Biennial Conference, Oct. 2-4, 2007, 11 p.

[Delaney-28] ^ ^a ^b ^c ^d ^e ^f Delaney, Catherine (2003). "The Last Glacial Stage (the Devensian) in Northwest England" (PDF). North West Geography. 3 (2): 27–37. ISSN 1476-1580.

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