Editing Ice age (section)

===Last Glacial Period in the semiarid Andes around Aconcagua and Tupungato===
A specially interesting climatic change during glacial times has taken place in the semi-arid Andes. Beside the expected cooling down in comparison with the current climate, a significant precipitation change happened here. So, researches in the presently semiarid subtropic Aconcagua-massif (6,962&nbsp;m) have shown an unexpectedly extensive glacial glaciation of the type "ice stream network".<ref>{{cite journal |author=Kuhle, M. |title=Spuren hocheiszeitlicher Gletscherbedeckung in der Aconcagua-Gruppe (32–33° S) |journal=Zentralblatt für Geologie und Paläontologie, Teil I |volume=11/12 |pages=1635–46 |year=1984 |issn=0340-5109}} Verhandlungsblatt des Südamerika-Symposiums 1984 in Bamberg.</ref><ref>{{cite journal |author=Kuhle, M. |title=Die Vergletscherung Tibets und die Entstehung von Eiszeiten |journal=Spektrum der Wissenschaft |issue=9/86 |pages=42–54 |year=1986 |issn=0170-2971}}</ref><ref>{{cite journal |author=Kuhle, Matthias |title=Subtropical Mountain- and Highland-Glaciation as Ice Age Triggers and the Waning of the Glacial Periods in the Pleistocene |journal=GeoJournal |volume=14 |issue=4 |pages=393–421 |date=June 1987 |jstor=41144132 |doi=10.1007/BF02602717|bibcode=1987GeoJo..14..393M |s2cid=129366521 }}</ref><ref name=Kuhle04>{{cite book |author=Kuhle, M. |chapter=The Last Glacial Maximum (LGM) glacier cover of the Aconcagua group and adjacent massifs in the Mendoza Andes (South America) |chapter-url=https://books.google.com/books?id=2xpIEPH7RW4C&pg=PA75 |editor1=Ehlers, J. |editor2=Gibbard, P.L. |title=Quaternary Glaciations: South America, Asia, Africa, Australasia, Antarctica |publisher=Elsevier |location=Amsterdam |year=2004 |isbn=978-0-444-51593-3 |pages=75–81 |url=https://books.google.com/books?id=2xpIEPH7RW4C |series=Development in Quaternary Science}}</ref><ref name=Kuhle11>{{cite book |author=Kuhle, M. |chapter=Ch 53: The High-Glacial (Last Glacial Maximum) Glacier Cover of the Aconcagua Group and Adjacent Massifs in the Mendoza Andes (South America) with a Closer Look at Further Empirical Evidence |chapter-url=https://books.google.com/books?id=Jv4uA1lHezEC&pg=PA735 |editor1=Ehlers, J. |editor2=Gibbard, P.L. |editor3=Hughes, P.D. |title=Quaternary Glaciations – Extent and Chronology: A Closer Look |publisher=Elsevier |location=Amsterdam |year=2011 |isbn=978-0-444-53447-7 |pages=735–8 |url=https://books.google.com/books?id=Jv4uA1lHezEC |series=Development in Quaternary Science}}</ref> The connected valley glaciers exceeding 100&nbsp;km in length, flowed down on the East-side of this section of the Andes at 32–34°S and 69–71°W as far as a height of 2,060&nbsp;m and on the western luff-side still clearly deeper.<ref name=Kuhle11/><ref>{{cite journal |author=Brüggen, J. |title=Zur Glazialgeologie der chilenischen Anden |journal=Geol. Rundsch. |volume=20 |issue=1 |pages=1–35 |year=1929 |doi=10.1007/BF01805072|bibcode=1929GeoRu..20....1B |s2cid=128436981 }}</ref> Where current glaciers scarcely reach 10&nbsp;km in length, the snowline (ELA) runs at a height of 4,600&nbsp;m and at that time was lowered to 3,200&nbsp;m [[Above sea level|asl]], i.e. about 1,400&nbsp;m. From this follows that—beside of an annual depression of temperature about c. 8.4&nbsp;°C— here was an increase in precipitation. Accordingly, at glacial times the humid climatic belt that today is situated several latitude degrees further to the S, was shifted much further to the N.<ref name=Kuhle04/><ref name=Kuhle11/>