GRIP c-axis orientations REFERENCES: Thorsteinsson, T., J. Kipfstuhl, and H. Miller. 1997. Textures and fabrics in the GRIP ice core. Journal of Geophysical Research 102:26583-26599. Thorsteinsson, T. 1996. Textures and Fabrics in the GRIP Ice Core, in Relation to Climate History and Ice Deformation. Berichte zur Polarforschung, PhD Thesis, University of Bremen, 146pp. Tison, J.L., T. Thorsteinsson, R.D. Lorrain, and J. Kipfstuhl. 1994. Origin and development of textures and fabrics in basal ice at Summit, Central Greenland. Earth and Planetary Science Letters 125:421-437. DATA DESCRIPTION: Average horizontal and vertical crystal diameters are given, obtained by linear-intercept measurements on thin sections. The data have not been corrected for the sectioning effect. The depth and approximate age is given for the data points. Ages are only given down to a depth of 2780 m (111 kyr), since the timescale is uncertain below this depth. 999999 is given where no data exist. DATA: Depth (m) Size (mm) Size (mm) Age (yrs BP) Midpoint Horizontal Vertical 109.08 1.61 1.36 375 120.9 1.66 1.53 430 139.15 1.9 999999 515 166.1 2.14 2 645 193.6 2.68 999999 782 221 2.58 2.58 920 249.15 2.2 999999 1061 276.55 2.81 2.36 1195 304.15 2.69 999999 1331 330.11 3.11 2.71 1464 359.1 3.31 999999 1617 382.25 2.82 2.18 1736 395.33 3.31 2.62 1805 412 3.25 999999 1897 446.05 3.78 2.53 2075 468.6 3.15 999999 2196 518.65 3.27 2.55 2468 523.6 4.13 999999 2495 538.33 3.11 2.53 2576 548.16 4.02 3.09 2628 578.6 3.7 999999 2796 592.35 3.85 3.05 2876 633.6 4.2 999999 3109 689.15 4.21 999999 3433 741.42 3.72 999999 3748 799.15 4.01 999999 4106 853.6 4.41 999999 4455 907.54 3.94 999999 4818 965.8 3.8 999999 5222 991.1 4.43 999999 5405 1018.63 3.93 999999 5605 1073.63 4.19 999999 6008 1122 3.99 2.89 6385 1172.6 4.13 3.38 6790 1212.2 3.55 2.99 7113 1237.07 3.97 3.07 7320 1265 3.26 2.78 7552 1292.5 4.55 999999 7810 1321.65 3.73 3.05 8045 1349.15 3.92 999999 8317 1403.6 4.03 3.11 8834 1459.15 4.31 3.13 9374 1513.6 4.16 2.94 9950 1569.14 3.55 2.4 10658 1618.1 3.75 2.62 11431 1625.78 2.91 999999 11609 1651.67 2.82 999999 12330 1679.15 3.17 999999 13050 1789.69 3.14 999999 15560 1899.14 2.5 999999 19090 1981.65 2.03 999999 22920 2063.92 2.44 1.81 27200 2091.1 2.89 2.09 28860 2118.6 2.76 1.93 30330 2146.42 2.96 1.94 31860 2173.6 3.4 999999 33540 2202.52 2.79 2.13 34920 2228.92 2.82 2.04 36970 2283.92 3.2 2.32 40850 2311.42 3.57 2.76 42580 2338.92 2.91 2.21 44680 2366.1 3.59 2.49 46870 2393.92 3.22 2.45 49070 2421.42 2.91 2.19 51100 2448.6 4.11 2.45 53900 2476.1 3.38 2.55 56300 2504.15 2.56 1.91 60400 2531.65 2.76 2 64900 2558.6 3.25 2.3 68500 2586.66 3.21 2.36 72700 2613.6 4.29 3.02 77200 2641.1 4.55 3.76 80800 2669.15 3.75 3.18 85800 2696.11 4.02 2.89 91500 2750.56 5.16 4.19 103400 2778.6 4.07 3.05 111000 2806.1 4.3 999999 999999 2833.61 3.8 999999 999999 2861.65 14 999999 999999 2889.15 4.3 999999 999999 2916.65 21.1 999999 999999 2923.75 5.4 999999 999999 2944.15 13.1 999999 999999 2970.56 21.4 999999 999999 2999.15 29.3 999999 999999 3022.25 33.3 999999 999999