7000 YEAR RECORD OF LAKE-LEVEL CHANGE ON THE NORTHERN GREAT-PLAINS - A HIGH-RESOLUTION PROXY OF PAST CLIMATE
Back to previous page
| Authors: | VANCE, RE; MATHEWES, RW; CLAGUE, JJ |
| Year: | 1992 |
| Journal: | Geology 20: 879-882 Article Link (DOI) |
| Title: | 7000 YEAR RECORD OF LAKE-LEVEL CHANGE ON THE NORTHERN GREAT-PLAINS - A HIGH-RESOLUTION PROXY OF PAST CLIMATE |
| Abstract: | Mineralogical and paleobotanical characteristics of the sedimentary fill in a shallow, saline lake in southeastern Alberta indicate that drought intervals are aperiodic and that climatic extremes unprecedented in historic time occurred earlier during the Holocene, when century-long intervals of repeated, intense droughts alternated with long periods when droughts were rare. Low-water intervals (signifying periods of drought) are recorded by carbonate-rich laminae containing abundant plant fossils indicative of hypersalinity. In contrast, highstands of relatively fresh water (outlining moist periods) are represented by massive, silicate-rich sediment with lower numbers of halophytic indicators. |
Please send suggestions for improving this publication database to
sass-support@sfu.ca.
Departmental members may update their publication list.