Open AccessThe magnetic remanence and anisotropy of susceptibility of cave sediments from Agen Allwedd, South Wales
Author(s) -
Noel Mark
Publication year - 1983
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.1983.tb02819.x
Subject(s) - remanence , sedimentary depositional environment , geology , silt , magnetite , natural remanent magnetization , paleomagnetism , anisotropy , cave , mineralogy , bedding , magnetization , geophysics , paleontology , physics , archaeology , quantum mechanics , structural basin , biology , magnetic field , horticulture , history
Summary This paper describes the palaeomagnetism and magnetic fabric of 40 samples of a laminated silt from Agen Allwedd, Powys. The sediments contain a very stable depositional remanent magnetization due to the presence of magnetite. The similarity of remanence directions at several locations suggests that deposition was synchronous throughout the cave. A method is used to correct the remanence for the effects of water currents, taking into account the information provided by the susceptibility anisotropy. Evidence provided by these sediments suggests that a model which describes bedding errors observed in the laboratory can be successfully applied to these natural materials on slopes as high as 29|Mo.