Open AccessThe use of magnetic measurements to investigate the mineralogy of Icelandic lake sediments and to study catchment processes
Author(s) -
BRADSHAW RICHARD,
THOMPSON ROY
Publication year - 1985
Publication title -
boreas
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.95
H-Index - 74
eISSN - 1502-3885
pISSN - 0300-9483
DOI - 10.1111/j.1502-3885.1985.tb00720.x
Subject(s) - geology , sediment , icelandic , remanence , saturation (graph theory) , magnetic susceptibility , geochemistry , drainage basin , mineralogy , geomorphology , magnetization , magnetic field , philosophy , linguistics , physics , mathematics , cartography , quantum mechanics , combinatorics , geography
Magnetic measurements made on sediment and catchment samples from two contrasting Icelandic lakes show how susceptibility and saturation isothermal remanent magnetisation alter as magnetic minerals pass from rock to soil to stream and into the lakes. There is no detectable growth of secondary magnetic minerals in Icelandic soil profiles and susceptibility peaks in the 62.5–1000 μm size range of mineral particles in the lake sediments. Changes in sediment source can be detected using combinations of magnetic measurements.