The following is a list of geomagnetic reversals , showing the ages of the beginning and end of each period of normal polarity (where the polarity matches the current direction).
Source for the last 83 million years: Cande and Kent, 1995.[1]
Ages are in million years before present (mya ).
End/Top (mya) Beginning/Base (mya) Normal polarity[clarification needed Name 0.000 0.780 1n Brunhes-Matuyama 0.990 1.070 1r.1n Jaramillo 1.770 1.950 2n Olduvai 2.140 2.150 2r.1n 2.581 3.040 2An.1n Gauss-Matuyama 3.110 3.220 2An.2n 3.330 3.580 2An.3n Gauss/Gilbert 4.180 4.290 3n.1n Cochiti 4.480 4.620 3n.2n Nunivak 4.800 4.890 3n.3n Sidufjall 4.980 5.230 3n.4n Thvera 5.894 6.137 3An.1n 6.269 6.567 3An.2n 6.935 7.091 3Bn 7.135 7.170 3Br.1n 7.341 7.375 3Br.2n 7.432 7.562 4n.1n 7.650 8.072 4n.2n 8.225 8.257 4r.1n 8.699 9.025 4An 9.230 9.308 4Ar.1n 9.580 9.642 4Ar.2n 9.740 9.880 5n.1n 9.920 10.949 5n.2n 11.052 11.099 5r.1n 11.476 11.531 5r.2n 11.935 12.078 5An.1n 12.184 12.401 5An.2n 12.678 12.708 5Ar.1n 12.775 12.819 5Ar.2n 12.991 13.139 5AAn 13.302 13.510 5ABn 13.703 14.076 5ACn 14.178 14.612 5ADn 14.800 14.888 5Bn.1n 15.034 15.155 5Bn.2n 16.014 16.293 5Cn.1n 16.327 16.488 5Cn.2n 16.556 16.726 5Cn.3n 17.277 17.615 5Dn 18.281 18.781 5En 19.048 20.131 6n 20.518 20.725 6An.1n 20.996 21.320 6An.2n 21.768 21.859 6AAn 22.151 22.248 6AAr.1n 22.459 22.493 6AAr.2n 22.588 22.750 6Bn.1n 22.804 23.069 6Bn.2n 23.353 23.535 6Cn.1n 23.677 23.800 6Cn.2n 23.999 24.118 6Cn.3n 24.730 24.781 7n.1n 24.835 25.183 7n.2n 25.496 25.648 7An 25.823 25.951 8n.1n 25.992 26.554 8n.2n 27.027 27.972 9n 28.283 28.512 10n.1n 28.578 28.745 10n.2n 29.401 29.662 11n.1n 29.765 30.098 11n.2n 30.479 30.939 12n 33.058 33.545 13n 34.655 34.940 15n 35.343 35.526 16n.1n 35.685 36.341 16n.2n 36.618 37.473 17n.1n 37.604 37.848 17n.2n 37.920 38.113 17n.3n 38.426 39.552 18n.1n 39.631 40.130 18n.2n 41.257 41.521 19n 42.536 43.789 20n 46.264 47.906 21n 49.037 49.714 22n 50.778 50.946 23n.1n 51.047 51.743 23n.2n 52.364 52.663 24n.1n 52.757 52.801 24n.2n 52.903 53.347 24n.3n 55.904 56.391 25n 57.554 57.911 26n 60.920 61.276 27n 62.499 63.634 28n 63.976 64.745 29n 65.578 67.610 30n 67.735 68.737 31n 71.071 71.338 32n.1n 71.587 73.004 32n.2n 73.291 73.374 32r.1n 73.619 79.075 33n 83.000 118.000 34n
References edit ^ Cande, S.C., and D.V. Kent, Revised calibration of the geomagnetic polarity timescale for the late Cretaceous and Cenozoic, J. Geophys. Res., 100, 6,093-6,095, 1995.
list, geomagnetic, reversals, following, list, geomagnetic, reversals, showing, ages, beginning, each, period, normal, polarity, where, polarity, matches, current, direction, source, last, million, years, cande, kent, 1995, ages, million, years, before, presen. The following is a list of geomagnetic reversals showing the ages of the beginning and end of each period of normal polarity where the polarity matches the current direction Source for the last 83 million years Cande and Kent 1995 1 Ages are in million years before present mya End Top mya Beginning Base mya Normal polarity wbr clarification needed Name 0 000 0 780 1n Brunhes Matuyama 0 990 1 070 1r 1n Jaramillo 1 770 1 950 2n Olduvai 2 140 2 150 2r 1n 2 581 3 040 2An 1n Gauss Matuyama 3 110 3 220 2An 2n 3 330 3 580 2An 3n Gauss Gilbert 4 180 4 290 3n 1n Cochiti 4 480 4 620 3n 2n Nunivak 4 800 4 890 3n 3n Sidufjall 4 980 5 230 3n 4n Thvera 5 894 6 137 3An 1n 6 269 6 567 3An 2n 6 935 7 091 3Bn 7 135 7 170 3Br 1n 7 341 7 375 3Br 2n 7 432 7 562 4n 1n 7 650 8 072 4n 2n 8 225 8 257 4r 1n 8 699 9 025 4An 9 230 9 308 4Ar 1n 9 580 9 642 4Ar 2n 9 740 9 880 5n 1n 9 920 10 949 5n 2n 11 052 11 099 5r 1n 11 476 11 531 5r 2n 11 935 12 078 5An 1n 12 184 12 401 5An 2n 12 678 12 708 5Ar 1n 12 775 12 819 5Ar 2n 12 991 13 139 5AAn 13 302 13 510 5ABn 13 703 14 076 5ACn 14 178 14 612 5ADn 14 800 14 888 5Bn 1n 15 034 15 155 5Bn 2n 16 014 16 293 5Cn 1n 16 327 16 488 5Cn 2n 16 556 16 726 5Cn 3n 17 277 17 615 5Dn 18 281 18 781 5En 19 048 20 131 6n 20 518 20 725 6An 1n 20 996 21 320 6An 2n 21 768 21 859 6AAn 22 151 22 248 6AAr 1n 22 459 22 493 6AAr 2n 22 588 22 750 6Bn 1n 22 804 23 069 6Bn 2n 23 353 23 535 6Cn 1n 23 677 23 800 6Cn 2n 23 999 24 118 6Cn 3n 24 730 24 781 7n 1n 24 835 25 183 7n 2n 25 496 25 648 7An 25 823 25 951 8n 1n 25 992 26 554 8n 2n 27 027 27 972 9n 28 283 28 512 10n 1n 28 578 28 745 10n 2n 29 401 29 662 11n 1n 29 765 30 098 11n 2n 30 479 30 939 12n 33 058 33 545 13n 34 655 34 940 15n 35 343 35 526 16n 1n 35 685 36 341 16n 2n 36 618 37 473 17n 1n 37 604 37 848 17n 2n 37 920 38 113 17n 3n 38 426 39 552 18n 1n 39 631 40 130 18n 2n 41 257 41 521 19n 42 536 43 789 20n 46 264 47 906 21n 49 037 49 714 22n 50 778 50 946 23n 1n 51 047 51 743 23n 2n 52 364 52 663 24n 1n 52 757 52 801 24n 2n 52 903 53 347 24n 3n 55 904 56 391 25n 57 554 57 911 26n 60 920 61 276 27n 62 499 63 634 28n 63 976 64 745 29n 65 578 67 610 30n 67 735 68 737 31n 71 071 71 338 32n 1n 71 587 73 004 32n 2n 73 291 73 374 32r 1n 73 619 79 075 33n 83 000 118 000 34nReferences edit Cande S C and D V Kent Revised calibration of the geomagnetic polarity timescale for the late Cretaceous and Cenozoic J Geophys Res 100 6 093 6 095 1995 Retrieved from https en wikipedia org w index php title List of geomagnetic reversals amp oldid 1205491982, wikipedia, wiki , book, books, library,
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