Results 121 to 130 of about 348 (157)
Some of the next articles are maybe not open access.
Dating with archaeomagnetic intensities
Physics and Chemistry of the Earth, 1998Abstract Improvements in techniques for determining the archaeomagnetic intensity make the refinement of dates using magnetic intensities a realistic proposition. Some of these techniques are reviewed and their limitations discussed.
openaire +1 more source
Archaeomagnetic Dating in the American Southwest
American Antiquity, 1980Although archaeomagnetic dating seems straightforward in principle, there are practical limitations which are not generally understood. Unlike rate-dependent processes such as isotopic dating, archaeomagnetic dating requires the construction of a master record of geomagnetic secular variation. Error is inherent in such a master curve due to statistical
Jeffrey L. Eighmy +2 more
openaire +1 more source
ARCHAEOMAGNETIC PROPERTIES OF COINS
Archaeometry, 1982A range of coin compositions is shown to possess a detectable magnetization that can be related to the geomagnetic field direction at the time of their manufacture. Roman bronze coins have been studied in particular and their magnetization is consistent with having been acquired when they were struck with the emperor's head on the lower die.
openaire +1 more source
Dating by archaeomagnetic and thermoluminescent methods
Philosophical Transactions of the Royal Society of London. Series A, Mathematical and Physical Sciences, 1970Abstract Magnetic measurements on orientated samples from the baked clay walls and floors of pottery kilns, etc., enable the ancient direction of the Earth’s magnetic field to be determined. This direction is recorded at the last firing by the phenomenon of thermoremanent magnetism.
openaire +1 more source
ARCHAEOMAGNETIC DATING: ROXBY, HUMBERSIDE
1990A clay surface thought to have been the floor of a kiln was discovered overlying Roman remains at Roxby in Humberside. Archaeomagnetic dating suggests that the feature was last fired towards the end of the 11th century AD, although the date is in some doubt owing to an anomalous scattering of the declination component of remanent magnetisation in the ...
openaire +1 more source
Auroral and archaeomagnetic variations in the past
Studia Geophysica et Geodaetica, 1969Кривая движения геомагнитного полюса по Keimatsu и сотрудникам не обьясняет вариации полярных сияний в прошлом. Однако, последние согласуются с китайскими наблюдениями солнечных пятен и с изменениями содержания изотопа C-14 в сечениях деревьев, так что их обълснение следует и в будуцем искть в изменениях солнечнои активности.
openaire +1 more source
ARCHAEOMAGNETIC DATING: FLIXBOROUGH, HUMBERSIDE
1990Three clay hearths from a Saxon site near Flixborough in Humberside were sampled for archaeomagnetic dating. Unfortunately, it was not possible to date any of them. In the case of two of the features, post-depositional disturbance was the most likely cause of corruption and, for the third feature, failure was due to the low intensity of remanent ...
openaire +1 more source