Abstract
Granulites from southwest Lofoten, Norway, often carry intense and stable components of NRM. Coercivities in excess of 100 mT and blocking temperatures up to 580°-645°C are common. Several phases in these rocks can carry stable components of NRM. Clinopyroxenes (augite with exsolved pigeonite and orthopyroxene) usually contain abundant Fe-Ti oxides, the majority of which are too small to be studied conclusively with visible light. Additionally, these rocks typically contain coarse-grained (~100-1000 μm) exsolution intergrowths of rhombohedral Fe-Ti oxides and coarse-grained magnetite. We have studied the magnetism and mineralogy of the titanohematite and the inclusion-bearing augites in one granulite sample using TEM and magnetic experiments to understand better the remanence properties of naturally occurring Fe-Ti oxides and their relationships to silicate minerals. -from Authors
| Original language | English (US) |
|---|---|
| Pages (from-to) | 14,009-14,026 |
| Journal | Journal of Geophysical Research |
| Volume | 94 |
| Issue number | B10 |
| DOIs | |
| State | Published - 1989 |
ASJC Scopus subject areas
- Geophysics
- Forestry
- Oceanography
- Aquatic Science
- Ecology
- Water Science and Technology
- Soil Science
- Geochemistry and Petrology
- Earth-Surface Processes
- Atmospheric Science
- Earth and Planetary Sciences (miscellaneous)
- Space and Planetary Science
- Palaeontology