A palaeomagnetic study of Syrian volcanic rocks of Miocene to Holocene age
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| Format: | Artículo científico |
| Langue: | en |
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Universidad Nacional Autónoma de México
1999
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| _version_ | 1876454566564724736 |
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| author | J. M. Abou Deeb |
| author_facet | J. M. Abou Deeb |
| contents | A palaeomagnetic study of Syrian volcanic rocks of Miocene to Holocene age J. M. Abou Deeb D. H. Tarling A. L. Abdeldayem M. M. Otaki Ciencias de la Tierra Syria Neogene volcanism Paleomagnetism magnetostratigraphy Miocene and younger volcanic rocks from Syria show both normal and reversed polarities after thermal demagnetisation.Similarities in site mean directions may be used to establish lavas erupted at similar times. The observed polarities suggest thatsome Quaternary volcanics are older than previously mapped. The site mean directions of reversed and intermediate polarity sitesare more scattered than for normal polarity sites, and the overall scatter is larger than would be expected from models of secularvariation simulated by westward or eastward drift of the present non axial dipole field. The normal sites are also twice as stronglymagnetised as the reversed and intermediate polarity sites. The mean direction of the Quaternary sites is consistent with an axialgeocentric dipole model, but the Miocene sites, while having antipodal directions for the two polarities, have a mean inclinationthat is shallower than the axial dipole field and may indicate persistent geomagnetic effects or possibly regional tilting. 1999 artículo científico 0016-7169 https://www.redalyc.org/articulo.oa?id=56838102 en http://www.redalyc.org/revista.oa?id=568 Geofísica Internacional application/pdf Universidad Nacional Autónoma de México Geofísica Internacional (México) Num.1 Vol.38 |
| format | Artículo científico |
| id | redalyc_56838102 |
| institution | Redalyc |
| language | en |
| publishDate | 1999 |
| publisher | Universidad Nacional Autónoma de México |
| spellingShingle | A palaeomagnetic study of Syrian volcanic rocks of Miocene to Holocene age J. M. Abou Deeb Ciencias de la Tierra Syria Neogene volcanism Paleomagnetism magnetostratigraphy A palaeomagnetic study of Syrian volcanic rocks of Miocene to Holocene age J. M. Abou Deeb D. H. Tarling A. L. Abdeldayem M. M. Otaki Ciencias de la Tierra Syria Neogene volcanism Paleomagnetism magnetostratigraphy Miocene and younger volcanic rocks from Syria show both normal and reversed polarities after thermal demagnetisation.Similarities in site mean directions may be used to establish lavas erupted at similar times. The observed polarities suggest thatsome Quaternary volcanics are older than previously mapped. The site mean directions of reversed and intermediate polarity sitesare more scattered than for normal polarity sites, and the overall scatter is larger than would be expected from models of secularvariation simulated by westward or eastward drift of the present non axial dipole field. The normal sites are also twice as stronglymagnetised as the reversed and intermediate polarity sites. The mean direction of the Quaternary sites is consistent with an axialgeocentric dipole model, but the Miocene sites, while having antipodal directions for the two polarities, have a mean inclinationthat is shallower than the axial dipole field and may indicate persistent geomagnetic effects or possibly regional tilting. 1999 artículo científico 0016-7169 https://www.redalyc.org/articulo.oa?id=56838102 en http://www.redalyc.org/revista.oa?id=568 Geofísica Internacional application/pdf Universidad Nacional Autónoma de México Geofísica Internacional (México) Num.1 Vol.38 |
| title | A palaeomagnetic study of Syrian volcanic rocks of Miocene to Holocene age |
| topic | Ciencias de la Tierra Syria Neogene volcanism Paleomagnetism magnetostratigraphy |
| url | https://www.redalyc.org/articulo.oa?id=56838102 |