History of Laurentide meltwater flow to the Gulf of Mexico during the last deglaciation, as revealed by reworked calcareous nannofossils
Resource
Geology 23 (9): 779-782
Journal
Geology
Pages
779
Date Issued
1995
Date
1995
Author(s)
Marchitto, Thomas M.
Abstract
Proposes a new chronology based on using the percentage of reworked calcareous nannofossils in Orca Basin sediments as a proxy for erosion. The period of greatest meltwater flow to the gulf was between 12.7 and 12.1 ka (Bolling warm interval), and flow remained high until the begining of the Younger Dryas cold episode at 11.3 ka. Little or no meltwater is inferred to have flowed to the gulf from ~10 to 9 ka, therefore, meltwater must have been permanently diverted away from the Gulf of Mexico at the beginning of the Younger Dryas. -from Authors
Type
journal article
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