By then, observations of the stratigraphic relationship between varved sediment and recessional moraines, and the correlation of varve sequences between geographically distant sites, added more compelling evidence to De Geer's essentially circumstantial speculation.
32.
However, this discovery led De Geer and many of his co-workers into making incorrect correlations, which they called'teleconnections', between continents, a process criticised by other varve pioneers like Ernst Antevs.
33.
1940 saw the publication of a now classic scientific paper by De Geer, the " Geochronologia Suecica ", in which he presented the Swedish Time Scale, a floating varve chronology for ice recession from Sk�ne to Indals�lven.
34.
These changes provide a long-term sequence of climatic events, recorded as changes in the thickness of sediment layers ( known as " varve analysis " & mdash; the term " varve " means a layer or layers of sediment.
35.
These changes provide a long-term sequence of climatic events, recorded as changes in the thickness of sediment layers ( known as " varve analysis " & mdash; the term " varve " means a layer or layers of sediment.
36.
In Canada, the Shulie Lake phase ( a readvance ) is dated to 14, 000-13, 500 BP . On the other hand, varve chronology in southern Sweden indicates a range of 14, 050-13, 900 there.
37.
The time of the maximum of the last glaciation derived from varve chronology is in close agreement with data from the Greenland Ice Sheet Project ( GISP2 ), but are somewhat at odds with those of the Greenland Ice Core Project ( GRIP ).
38.
Caldenius worked as geotechnical engineer for the Swedish State Railways until 1922 when he started to work full-time with his Ph . D thesis " Ragundasj�ns stratigrafi och geokronologi " ( Stratigraphy and geochronology of clay varve chronology of Gerard De Geer to the Southern Hemisphere.
39.
For example, paleoenvironmental analysis of sediment cores from Lake Suigetsu in Japan found the Younger Dryas temperature decline of 2 4 �C between 12, 300 and 11, 250 varve ( calendar ) years BP instead of about 12, 900 calendar years BP in the North Atlantic region.
40.
And the six million varve depth of the Green River Formation shows that the Earth is at least six million years old, which although that's only a small fraction of the total age of the Earth, is still vastly older than is thought by anyone who measures the time since creation in the thousands of years.
