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Thermal sensitivity of md hematite: implication for magnetic anomalies
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Kletetschka, Gunther Wasilewski, Peter J. Taylor, Patrick T. |
| Copyright Year | 1999 |
| Description | Magnetic remanence of crustal rocks can reside in three common rock-forming magnetic minerals: magnetite, pyrrhotite, and hematite. Thermoremanent magnetization (TRM) of magnetite and pyrrhotite is carried mostly by single domain (SD) grains. The TRM of hematite grains, however, is carried mostly by multidomain (NM) grains. This characteristic is illustrated by TRM acquisition curves for hematite of variable grainsizes. The transition between truly NM behavior and tendency towards SD behavior his been established between hematite grainsizes of 0. 1 and 0.05 mm. Coarse grainsize of lower crustal rocks and the large sensitivity of MD hematite grains to acquire TRM indicates that hematite could be a significant contributor to long-wavelength magnetic anomalies. |
| File Size | 713103 |
| Page Count | 11 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19990103130 |
| Archival Resource Key | ark:/13960/t72v7gn2w |
| Language | English |
| Publisher Date | 1999-01-01 |
| Access Restriction | Open |
| Subject Keyword | Geophysics Hematite Sensitivity Magnetite Magnetization Pyrrhotite Rocks Thermal Conductivity Magnetic Anomalies Crusts Remanence Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
