Open AccessThe palaeomagnetism and magnetic fabric of sediments from Peak Cavern, Derbyshire
Author(s) -
Noel Mark
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.tb04365.x
Subject(s) - remanence , geology , magnetostratigraphy , sedimentary depositional environment , paleomagnetism , rock magnetism , magnetite , earth's magnetic field , natural remanent magnetization , sediment , deposition (geology) , anisotropy , mineralogy , geochemistry , magnetization , geomorphology , geophysics , paleontology , magnetic field , physics , quantum mechanics , structural basin
Summary. This paper describes the magnetic remanence and susceptibility anisotropy of 42 samples of laminated clay from Peak Cavern. The sediments are shown to have acquired a stable remanent magnetization due to the depositional alignment of magnetite grains. The magnetic fabric data confirm the existence of alteration within a reddened surface layer. A record of geomagnetic secular variation in the underlying clay is compared to a dated lake sediment magnetostratigraphy to suggest that deposition occurred around 7000 yr bp . A method for estimating water current directions based on the remanence and magnetic fabric data is critically assessed before deducing the sense of palaeoflow in the cave.