Paleomagnetic and geochronological identification of the Réunion subchron in Ethiopian Afar

Journal of Geophysical Research: Solid Earth

Volumn 104, Issue B5, 1999, Pages 10405-10419

  Kidane, Tesfaye ^a,c   Carlut, J ^a   Courtillot, V ^a   Gallet, Y ^a   Quidelleur, X ^a,b   Gillot, P Y ^b   Haile, Tigistu ^c  

^a INSTITUT DE PHYSIQUE DU GLOBE DE PARIS   (France)

^b UNIVERSITÉ PARIS SACLAY   (France)

^c ADDIS ABABA UNIVERSITY   (Ethiopia)

Author keywords

[No Author keywords available]

Indexed keywords

BLOCK ROTATION; GEOCHRONOLOGY; PALEOMAGNETISM; PLIOCENE; SECULAR VARIATION; VOLCANIC ERUPTION;

REUNION;

EID: 0033541983     PISSN: 21699313     EISSN: 21699356     Source Type: Journal    
DOI: 10.1029/1999jb900014     Document Type: Article

References (43)

1. 39Ar incremental heating data on whole-rock basalts, Earth Planet. Sci. Lett., 118, 135-144, 1993.
2. Besse, J., and V. Courtillot, Revised and synthetic apparent polar wander paths of the African, Eurasian, North American and Indian plates, and true polar wander since 200 Ma, J. Geophys. Res., 96, 4029-4050, 1991.
3. Brown, F.H., R.T. Shuey, and M.K. Croes, Magnetostratigraphy of the Shungura and Usno Formations, southwestern Ethiopia: New data and comprehensive reanalysis, Geophys. J. R. Astron. Soc., 54, 519-538, 1978.
4. Cande, S. C., and D. V. Kent, Revised calibration of the geomagnetic polarity timescale for the Late Cretaceous and Cenozoic, J. Geophys. Res., 100, 6093-6095, 1995.
5. Carlut, J., J.-P. Valet, Y. Gallet, T. Kidane, V. Courtillot, X. Quidelleur, and P.-Y. Gillot, Preliminary paleointensity results during the Reunion event (abstract), IAGA, Abstract book, Uppsala, Sweden, p 45, 1997.
6. Carlut, J., and V. Courtillot, How complex is the time averaged geomagnetic field over the last five million years?, Geophys. J. Int., 134, 527-544, 1998.
7. Cassignol, C, and P.-Y. Gillot, Range and effectiveness of unspiked potassium-argon dating in Numerical Dating in Stratigraphy, edited by G.S. Odin, pp. 159-172, John Wiley, New York, 1982.
8. Chamalaun, F. H., and I. McDougall, Dating geomagnetic polarity epochs in Réunion, Nature, 210, 1212, 1966.
9. Courtillot, V., Opening of the Gulf of Aden and Afar by progressive tearing, Phys. Earth Planet. Inter., 21, 343-350, 1980.
10. Courtillot, V., Propagating rifts and continental breakup, Tectonics, 1, 239-250, 1982.
11. Courtillot, V., J. Achache, F. Landre, N. Bonhommet, R. Montigny, and G. Féraud, Episodic spreading and rift propagation: New paleomagnetic and geochronologic data from the Afar nascent passive margin, J. Geophys. Res., 89, 3315-3333, 1984.
12. Cox, A., Confidence limits for the precision parameter K, Geophys. J. R. Astron. Soc., 18, 545-549, 1969.
13. Endale, T., N. Thouveny, and M. Taieb, Magnetostratigraphy of the Hadar Formation (Ethiopia): evidence for a short normal event in the Mammoth subchron, Stud. Geophys. Geod., 40, 313-336, 1996.
14. Fischer, R. A., Dispersion on a sphere, Proc., R. Soc. London, Ser. A., 217, 295-305, 1953.
15. Gillot, P.-Y., and Y. Cornette, The Cassignol technique for potassium-argon dating, precision and accuracy: Examples from the late Pleistocene to recent volcanics from southern Italy, Chem. Geol., 59, 205-222, 1986.
16. Gruszow, S., Etude aéromagnétique et paléomagnétique du territoire de la République de Djibouti, Ph.D. thesis, 211 pp., Univ. Paris 7, 1992.
17. Halls, H. C., A least-squares method to find a remanence direction from converging remagnetization circles, Geophys. J. R. Astron. Soc., 45, 297-304, 1976.
18. Halls, H. C., The use of converging remagnetization circles in paleomagnetism, Phys. Earth Planet. Inter., 16, 1-11, 1978.
19. Johnson, C. L., and C. G. Constable, The time-averaged geomagnetic field as recorded by lava flows over the past 5 Myr, Geophys. J. Int., 122, 489-519, 1995.
20. Johnson, C. L, and C. G. Constable, Paleosecular variation recorded by lava flows over the past five million years, Philos. Trans. R. Soc. London, Ser. A., 354, 89-141, 1996.
21. Kirschvink, J. L., The least squares line and plane and the analysis of paleomagnetic data, Geophys. J. R. Astron. Soc., 62, 699-718, 1980.
22. Manighetti, I., Dynamique des systèmes extensifs en Afar, Ph.D. thesis, 242 pp., Univ. Paris 6, 1993.
23. Manighetti, I., P. Tapponnier, V. Courtillot, S. Gruszow, and P.-Y. Gillot, Propagation of rifting along the Arabia-Somalia plate boundary: The gulfs of Aden and Tadjoura, J. Geophys. Res., 102, 2681-2710, 1997.
24. McDougall, I., and F. H. Chamalaun, Geomagnetic polarity scale of time, Nature, 212, 1415, 1966.
25. McDougall, I., and N. D. Watkins, Age and duration of the Réunion geomagnetic polarity event, Earth Planet. Sci. Lett., 19, 443-452, 1973.
26. McElhinny, M.W., P.L. McFadden, and R. T. Merrill, The time-averaged paleomagnetic field 0-5 Ma, J. Geophys. Res., 101, 25,007-25,027, 1996.
27. McFadden, P.L., and M.W. McElhinny, The combined analysis of remagnetization circles and direct observations in paleomagnetism, Earth Planet. Sci. Lett., 87, 152-160, 1988.
28. McFadden, P.L., and M.W. McElhinny, Classification of the reversal test in paleomagnetism, Geophys. J. Int., 103, 725-729, 1990.
29. McFadden, P. L., R.T. Merrill, and M. W. McElhinny, Dipole/quadrupole family modeling of paleosecular variation, J. Geophys. Res., 93, 11,583-11,588, 1988.
30. McFadden, P. L., R.T. Merrill, M.W. McElhinny, and S. Lee, Reversals of the Earth's magnetic field and temporal variations of the dynamo families, J. Geophys. Res., 96, 3923-3933, 1991.
31. Odin, G.S. (Ed.), Numerical Dating in Stratigraphy, 2 vol., 1094 pp., John Wiley, New York, 1982.
32. Prévot, M., and S. Grommé, Intensity of magnetization of subaerial and sub-marine basalts and its possible change with time, Geophys. J. R. Astron. Soc., 40, 207-224, 1975.
33. Quidelleur, X., and V. Courtillot, On low-degree spherical harmonic models of paleosecular variation, Phys. Earth Planet. Inter., 95, 55-77, 1996.
34. Quidelleur, X., J.-P. Valet, V. Courtillot and G. Hulot, Long-term geometry of the geomagnetic field for the last five million years: An updated secular variation database, Geophys. Res. Lett., 21, 1639-1642, 1994.
35. Steiger, R. H., and E. Jäger, Subcommission on geochronology: Convention on the use of decay constants in geo- and cosmochronology, Earth Planet. Sci. Lett., 36, 359-362, 1977.
36. Tapponnier, P., R. Armijo, I. Manighetti, and V. Courtillot, Bookshelf faulting and horizontal block rotation between overlapping rifts in southern Afar, Geophys. Res. Lett., 17, 1-4, 1990.
37. Taylor, J.R., An introduction of error analysis, 270 pp., Univ. Sci. Books, Mill Valley, Calif., 1982.
38. Valet, J. -P., and L. Meynadier, Geomagnetic field intensity and reversals during the past four million years, Nature, 366, 234-238, 1993.
39. Valet, J.-P., T. Kidane, V. Soler, J. Brassart, V. Courtillot, and L. Meynadier, Remagnetization in lava flows recording pretransitional directions, J. Geophys. Res., 103, 9755-9775, 1998.
40. Valet, J.-P., J. Brassard, X. Quidelleur, V. Soler, P.-Y. Gillot, and L. Hongre, Paleointensity variations across the last geomagnetic reversal at La Palma, Canary Islands, Spain, J. Geophys. Res., in press, 1999.
41. Vandamme, D., A new method to determine paleosecular variations, Phys. Earth. Planet. Inter., 85, 131-142, 1994.
42. Varet, J., Geological Map of central and southern Afar (Ethiopia and F.T.A.I), 1:500 000; Beicip, France, 1975.
43. Varet, J., and F. Gasse, Geology of central and southern Afar (Ethiopia and Djibouti Republic), Centre National de la Recherche Scientifique, Paris, 1978.