Cosmogenic-nuclide measurements and stratigraphic info
Borehole SD-BR
Key to drillhole logs
Be-10 and Al-26 in quartz
| | Depth | | [Be-10] | | | | [Al-26] | | |
Sample name | | (ft) | | (atoms/g) | | +/- | | (atoms/g) | | +/- |
|
SDBR-305M | | 305 | | 1.46E+05 | | 4.19E+03 | | 3.99E+05 | | 2.33E+04 |
Bulk Be-10 in sediment
| | Depth | | [Be-10] | | |
Sample name | | (ft) | | (atoms/g) | | +/- |
|
Stratigraphy
Mass depths reflect the following density assumptions:
What? | | Till | Glaciolacustrine | Sand | Loess | Silty sand | Gravelly sand |
Density(g cm-3)
| | 2.25 | 2.06 | 2.13 | 2.18 | 2.06 | 2.49 |
These are averages derived from the density measurements here.
Top depth | | Bottom depth | | Lithology | | Top depth | | Bottom depth | | Density | | Mass thickness | | Top mass depth | | Bottom mass depth |
(ft) | | (ft) | | | | (m) | | (m) | | (g cm-3) | | of unit (g cm-2) | | (g cm-2) | | (g cm-2) |
|
1 | | 4 | | TILL | | 0.30 | | 1.22 | | 2.25 | | 205 | | 0 | | 205 |
4 | | 15 | | GL | | 1.22 | | 4.57 | | 2.06 | | 690 | | 205 | | 895 |
15 | | 43 | | TILL | | 4.57 | | 13.11 | | 2.25 | | 1916 | | 895 | | 2812 |
43 | | 64 | | TILL | | 13.11 | | 19.51 | | 2.25 | | 1437 | | 2812 | | 4249 |
64 | | 69.5 | | SAND | | 19.51 | | 21.18 | | 2.13 | | 358 | | 4249 | | 4606 |
69.5 | | 76.5 | | TILL | | 21.18 | | 23.32 | | 2.25 | | 479 | | 4606 | | 5086 |
76.5 | | 80 | | TILL | | 23.32 | | 24.38 | | 2.25 | | 240 | | 5086 | | 5325 |
80 | | 86.5 | | SAND | | 24.38 | | 26.37 | | 2.13 | | 423 | | 5325 | | 5748 |
86.5 | | 94.5 | | TILL | | 26.37 | | 28.80 | | 2.25 | | 547 | | 5748 | | 6295 |
94.5 | | 100 | | SAND | | 28.80 | | 30.48 | | 2.13 | | 358 | | 6295 | | 6653 |
100 | | 132 | | TILL | | 30.48 | | 40.23 | | 2.25 | | 2190 | | 6653 | | 8843 |
132 | | 144 | | SAND | | 40.23 | | 43.89 | | 2.13 | | 780 | | 8843 | | 9623 |
144 | | 145 | | TILL | | 43.89 | | 44.20 | | 2.25 | | 68 | | 9623 | | 9691 |
145 | | 148 | | SAND | | 44.20 | | 45.11 | | 2.13 | | 195 | | 9691 | | 9886 |
148 | | 153 | | TILL | | 45.11 | | 46.63 | | 2.25 | | 342 | | 9886 | | 10229 |
153 | | 162 | | SAND | | 46.63 | | 49.38 | | 2.13 | | 585 | | 10229 | | 10814 |
162 | | 225 | | TILL | | 49.38 | | 68.58 | | 2.25 | | 4311 | | 10814 | | 15125 |
225 | | 232 | | SAND | | 68.58 | | 70.71 | | 2.13 | | 455 | | 15125 | | 15580 |
232 | | 257.5 | | TILL | | 70.71 | | 78.49 | | 2.25 | | 1745 | | 15580 | | 17326 |
257.5 | | 270 | | SAND | | 78.49 | | 82.30 | | 2.13 | | 813 | | 17326 | | 18138 |
270 | | 293 | | TILL | | 82.30 | | 89.31 | | 2.25 | | 1574 | | 18138 | | 19712 |
293 | | 304 | | TILL | | 89.31 | | 92.66 | | 2.25 | | 753 | | 19712 | | 20465 |
304 | | 306 | | TILL | | 92.66 | | 93.27 | | 2.25 | | 137 | | 20465 | | 20602 |
306 | | 317 | | SAND | | 93.27 | | 96.62 | | 2.13 | | 715 | | 20602 | | 21317 |
317 | | 333.5 | | TILL | | 96.62 | | 101.65 | | 2.25 | | 1129 | | 21317 | | 22446 |
333.5 | | 352.5 | | SAND | | 101.65 | | 107.44 | | 2.13 | | 1235 | | 22446 | | 23682 |
352.5 | | 355 | | GL | | 107.44 | | 108.20 | | 2.06 | | 157 | | 23682 | | 23839 |
355 | | 359.5 | | SAND | | 108.20 | | 109.58 | | 2.13 | | 293 | | 23839 | | 24131 |
359.5 | | 395 | | GL | | 109.58 | | 120.40 | | 2.06 | | 2227 | | 24131 | | 26359 |
395 | | 414 | | SAND | | 120.40 | | 126.19 | | 2.13 | | 1235 | | 26359 | | 27594 |
414 | | 420.5 | | TILL | | 126.19 | | 128.17 | | 2.25 | | 445 | | 27594 | | 28039 |
420.5 | | 465 | | BR | | 128.17 | | 141.73- | | - | | - | | - | | |