Publications
Filter Total Items: 7614
Low intensity of the geomagnetic field in early Jurassic time Low intensity of the geomagnetic field in early Jurassic time
From a large collection of Jurassic continental tholeiites cropping out in Europe and Africa, we selected 90 samples for paleointensity determinations. The samples were carefully selected to avoid any secondary magnetizations, especially viscous magnetization. Use of the Thellier method reveals that magnetic property changes due to heating begin often at quite low temperatures but...
Authors
M. Perrin, M. Prevot, E. A. Mankinen
Large landslides from oceanic volcanoes Large landslides from oceanic volcanoes
Large landslides are ubiquitous around the submarine flanks of Hawaiian volcanoes, and GLORIA has also revealed large landslides offshore from Tristan da Cunha and El Hierro. On both of the latter islands, steep flanks formerly attributed to tilting or marine erosion have been reinterpreted as landslide headwalls mantled by younger lava flows. These landslides occur in a wide range of...
Authors
R. T. Holcomb, R. C. Searle
Large-scale variation in lithospheric structure along and across the Kenya rift Large-scale variation in lithospheric structure along and across the Kenya rift
The Kenya rift is one of the classic examples of a continental rift zone: models for its evolution range from extension of the lithosphere by pure shear1, through extension by simple shear2, to diapiric upwelling of an asthenolith3. Following a pilot study in 19854, the present work involved the shooting of three seismic refraction and wide-angle reflection profiles along the axis...
Authors
C. Prodehl, J. Mechie, W. Kaminski, K. Fuchs, C. Grosse, H. Hoffmann, R. Stangl, R. Stellrecht, M.A. Khan, Peter K.H. Maguire, W. Kirk, Gordon R. Keller, A. Githui, M. Baker, Walter D. Mooney, E. Criley, J. Luetgert, B. Jacob, H. Thybo, M. Demartin, S. Scarascia, A. Hirn, J. R. Bowman, I. Nyambok, S. Gaciri, J. Patel, E. Dindi, D.H. Griffiths, R.F. King, A. E. Mussett, L.W. Braile, G. Thompson, K. Olsen, S. Harder, R. Vees, D. Gajewski, A. Schulte, J. Obel, F. Mwango, J. Mukinya, D. Riaroh
Hydrologic monitoring for effects of geothermal and ground-water development, Long Valley caldera, California Hydrologic monitoring for effects of geothermal and ground-water development, Long Valley caldera, California
No abstract available.
Authors
C. D. Farrar, D. L. Lyster
Documented historical landslide dams from around the world Documented historical landslide dams from around the world
This data compilation consists of dBase IV1 data files of the location, date, triggering mechanism, kind, size, failure time and mechanism, breach dimensions, subsequent controls, materials, and references for 463 historical landslide dams and associated natural reservoirs that have been recorded throughout the World. The data base presented in this report is a compilation of information...
Authors
John E. Costa, Robert L. Schuster
Preliminary geomagnetic data, College Observatory, Fairbanks, Alaska, August 1991 Preliminary geomagnetic data, College Observatory, Fairbanks, Alaska, August 1991
No abstract available.
Authors
John B. Townshend, Richard V. O’Connell, Carol Ann Varner
Preliminary geomagnetic data, College Observatory, Fairbanks, Alaska, February 1991 Preliminary geomagnetic data, College Observatory, Fairbanks, Alaska, February 1991
No abstract available.
Authors
John B. Townshend, Richard V. O’Connell, Carol Ann Varner
Preliminary geomagnetic data, College Observatory, Fairbanks, Alaska, July 1991 Preliminary geomagnetic data, College Observatory, Fairbanks, Alaska, July 1991
No abstract available.
Authors
John B. Townshend, Richard V. O’Connell, Carol Ann Varner