CORRELATION OF LATE PLEISTOCENE GLACIOLACUSTRINE AND MARINE DEPOSITS BY MEANS OF GEOMAGNETIC SECULAR VARIATION, WITH EXAMPLES FROM NORTHERNNEW-YORK AND SOUTHERN ONTARIO

Citation
Dl. Pair et al., CORRELATION OF LATE PLEISTOCENE GLACIOLACUSTRINE AND MARINE DEPOSITS BY MEANS OF GEOMAGNETIC SECULAR VARIATION, WITH EXAMPLES FROM NORTHERNNEW-YORK AND SOUTHERN ONTARIO, Quaternary research, 42(3), 1994, pp. 277-287
Citations number
30
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Geology,"Geosciences, Interdisciplinary
Journal title
ISSN journal
0033-5894
Volume
42
Issue
3
Year of publication
1994
Pages
277 - 287
Database
ISI
SICI code
0033-5894(1994)42:3<277:COLPGA>2.0.ZU;2-A
Abstract
The geomagnetic secular variation record retained by glaciolacustrine and marine sediments at nine sites in northern New York and southern O ntario provides a means for stratigraphic correlation of glacial depos its for the time period between about 12,600 to 9900 C-14 yr B.P. Meas urement of the depositional remanent magnetism of sediments deposited in Glacial Lake Iroquois and the Champlain Sea has produced a geomagne tic secular variation curve that represents the time period immediatel y following deglaciation about 12,600 C-14 yr B.P. The curve varies fr om about 358 degrees to 344 degrees declination and 51 degrees to 61 d egrees inclination over approximately 180 varve years. Marine sediment s of the Champlain Sea have preserved a record approximately 1500 yr l ong that varies from about 2 degrees to 29 degrees declination and 47 degrees to 60 degrees inclination. These combined glacial-paieomagneti c records may also correlate with those from glacial sequences beyond our study area. The shape and amplitude of the secular variation recor d in glaciolacustrine and marine sediments from the western Adirondack borderland show agreement with other glacial varve secular variation records and suggest possible correlations with secular variation curve s from lake cores. (C) University of Washington.