Open Access10 Be contents of Mono Lake sediments: search for enhancement during a geomagnetic excursion
Author(s) -
Ticich T.,
Lundberg L.,
Pal D. K.,
Smith C. M.,
Herzog G. F.,
Moniot R. K.,
Tuniz C.,
Savin W.,
Kruse T. H.,
Liddicoat J. C.
Publication year - 1986
Publication title -
geophysical journal of the royal astronomical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.302
H-Index - 168
eISSN - 1365-246X
pISSN - 0016-8009
DOI - 10.1111/j.1365-246x.1986.tb06633.x
Subject(s) - excursion , geology , earth's magnetic field , silt , natural remanent magnetization , paleomagnetism , remanence , sediment , paleontology , geomagnetic secular variation , mineralogy , geomorphology , magnetization , physics , quantum mechanics , magnetic field , political science , law , geomagnetic storm
Summary We report the 10 Be and Be contents of 22 sediment samples of lacustrine silt from the Wilson Creek section of Mono Lake, California. The section spans about 20–35 kyr bp and contains a record of a geomagnetic excursion for which the relative palaeointensity is estimated from the ratio of natural remanent magnetization to anhysteretic remanent magnetization. The 10 Be contents of the excursion samples are somewhat higher than the average of non‐excursion samples (0.24 ± 0.02 versus 0.15 ± 0.02 dpm kg −1 ). It is clear however that geomagnetic effects are not the sole cause of the observed variations.