Weathering processes in baked sediments and their effects on archaeomagnetic field-intensity measurements

Details Weathering processes in baked sediments and their effects on archaeomagnetic field-intensity measurements Weathering processes in baked sediments and their effects on archaeomagnetic field-intensity measurements

Jan 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977pepi...13..346b&link_type=abstract

Physics of the Earth and Planetary Interiors, Volume 13, Issue 4, p. 346-354.

Physics

8

Scientific paper

Thellier-type measurements of ancient field intensity on specimens of clay and other sediments, which were apparently well-baked and oxidised in ancient times, often fail to give consistent results over part or even most of the blocking-temperature spectrum. It is suggested that post-baking chemical alteration, or weathering, leading to the presence of hydrated Fe minerals, is a major cause of non-ideal behaviour in such material. The behaviour of hypothetical specimens containing either goethite or lepidocrocite can be predicted using simple models, and actual examples are given from two sites in southern Australia which show some similarities with the predicted model behaviour. The results of the Thellier measurements, after interpretations, agree closely with previously published results from the northern hemisphere for the period 4700-4200 yr. B.P. The presence of hydrated minerals may not be readily detected by methods other than the Thellier technique and, if so, would result in estimates of the ancient geomagnetic field strength that are systematically too low. Address: Research School of Earth Sciences, Australian National University, P.O. Box 4, Canberra, A.C.T. 2600, Australia.

Affiliated with

Also associated with

No associations

Rating

Weathering processes in baked sediments and their effects on archaeomagnetic field-intensity measurements does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Weathering processes in baked sediments and their effects on archaeomagnetic field-intensity measurements, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Weathering processes in baked sediments and their effects on archaeomagnetic field-intensity measurements will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-953040