James E.T. Channell
Application of paleomagnetism to tectonics, timescale construction, environmental change, and correlation of paleoclimate records.
The application of paleomagnetism to paleogeographies in mountain belts, notably in the Alpine-Mediterranean area. The objective has been to reconstruct the pre-deformational relative postion of rock bodies (on scales from individual thrust sheets to continents).
The application of magnetic polarity stratigraphy to the generation of geologic time scales, by integration of the polarity stratigraphy to the generation of geologic time scales, by integration of the polarity timescale with biostratigraphies, cyclostratigraphies, isotope stratigraphies and radiometric age determinations.
Environmental magnetism and geomagnetic paleointensity: the use of rock magnetic characteristics as sedimentological tools in recent sediments (e.g. magnetic granulometry) and the use of secular variation and paleointensitites for high-resoution correlation. Variations in the intensity of the geomagnetic field, when recorded by sediments, appear to provide a millennial-scale means of global correlation suitable for studying abrupt climate change.
Geomagnetism: high-resolution records of geomagnetic field behavior from deep-sea sediment drifts have revolutionized our knowledge of the geomagnetic field during the last ~ 2 million years. As a result, we have a clearer picture of the spatial and temporal characteristics of geomagnetic (secular) variation, and the morphology of polarity transition fields. The records are now being used to constrain computer-generated models of the geodynamo.