Preliminary results of a rock-magnetic study of obsidians from central Mexico
Fuente:
Redalyc
Salvato in:
| Natura: | Artículo científico |
|---|---|
| Lingua: | en |
| Pubblicazione: |
Universidad Nacional Autónoma de México
1999
|
| Soggetti: | |
| Accesso online: | |
| Tags: |
Aggiungi Tag
Nessun Tag, puoi essere il primo ad aggiungerne!!
|
| _version_ | 1876479948727779328 |
|---|---|
| author | |
| author_facet | |
| contents | Preliminary results of a rock-magnetic study of obsidians from central Mexico Ciencias de la Tierra rock Trans Obsidian magnetism central Mexico Rock-magnetic parameters of obsidian samples from 18 localities of the Trans-Mexican volcanic belt indicate significantdifferences in relative contents of iron-titanium oxides and grain sizes of up to five orders of magnitude, particularly in low-fieldmagnetic susceptibility, NRM intensity and IRM intensity. Obsidians from 13 deposits show susceptibility values between 40 and1500 10-6 SI units, NRM intensities between 40 and 7130 mA/m, and IRM intensities between 1370 and 23900mA/m. Samples from five localities show lower values, with susceptibilities between 10 and 20 10-6 SI, NRM intensities between0.1 and 26 mA/m, and IRM intensities between 4 and 500 mA/m. Log-log plots of combinations of these magnetic parametersallow characterization of obsidians from different volcanic sources. However, further studies are required to permit a distinctionof given deposits within the two major groups. 1999 artículo científico 0016-7169 https://www.redalyc.org/articulo.oa?id=56838203 en http://www.redalyc.org/revista.oa?id=568 Geofísica Internacional application/pdf Universidad Nacional Autónoma de México Geofísica Internacional (México) Num.2 Vol.38 |
| format | Artículo científico |
| id | redalyc_56838203 |
| institution | Redalyc |
| language | en |
| publishDate | 1999 |
| publisher | Universidad Nacional Autónoma de México |
| spellingShingle | Preliminary results of a rock-magnetic study of obsidians from central Mexico Ciencias de la Tierra rock Trans Obsidian magnetism central Mexico Preliminary results of a rock-magnetic study of obsidians from central Mexico Ciencias de la Tierra rock Trans Obsidian magnetism central Mexico Rock-magnetic parameters of obsidian samples from 18 localities of the Trans-Mexican volcanic belt indicate significantdifferences in relative contents of iron-titanium oxides and grain sizes of up to five orders of magnitude, particularly in low-fieldmagnetic susceptibility, NRM intensity and IRM intensity. Obsidians from 13 deposits show susceptibility values between 40 and1500 10-6 SI units, NRM intensities between 40 and 7130 mA/m, and IRM intensities between 1370 and 23900mA/m. Samples from five localities show lower values, with susceptibilities between 10 and 20 10-6 SI, NRM intensities between0.1 and 26 mA/m, and IRM intensities between 4 and 500 mA/m. Log-log plots of combinations of these magnetic parametersallow characterization of obsidians from different volcanic sources. However, further studies are required to permit a distinctionof given deposits within the two major groups. 1999 artículo científico 0016-7169 https://www.redalyc.org/articulo.oa?id=56838203 en http://www.redalyc.org/revista.oa?id=568 Geofísica Internacional application/pdf Universidad Nacional Autónoma de México Geofísica Internacional (México) Num.2 Vol.38 |
| title | Preliminary results of a rock-magnetic study of obsidians from central Mexico |
| topic | Ciencias de la Tierra rock Trans Obsidian magnetism central Mexico |
| url | https://www.redalyc.org/articulo.oa?id=56838203 |