Loading...
Please wait, while we are loading the content...
Similar Documents
Sr isotope and rare earth element geochemistry of DSDP Leg 37 basalts
| Content Provider | Semantic Scholar |
|---|---|
| Author | O’nions, R. K. Pankhurst, Robert J. |
| Copyright Year | 1976 |
| Abstract | 87Sr/86Sr ratios have been determined on eleven whole rock basalt samples from DSDP Leg 37. The 87Sr/86Sr ratios range from 0.70305 ± 4 to 0.70451 ± 4 due to alteration and contamination with seawater Sr. Leaching with 5% HF has only a small effect on the 87Sr/86Sr of the samples. However, treatment with 6M HCl in acid digestion bombs at 130°C removes the contaminant more effectively. Altered plagioclase and olivine are dissolved during this process. The mean 87Sr/86Sr of four HCl-treated samples from hole 332A is 0.70299 and that for five samples from hole 332B is 0.70297. The 87Sr/86Sr ratios of treated samples from holes 333A and 335 are 0.70304 ± 4 and 0.70316 ± 4, respectively. These 87Sr/86Sr ratios are within the range observed for other basalts elsewhere along the Mid-Atlantic Ridge in the North Atlantic. REE distribution patterns have been determined for four samples, three from hole 332B and one from hole 335. CeN/YbN ratios range from 0.58 to 1.30 and do not correlate with 87Sr/86Sr ratios. The source regions of these basalts appear to have been variable in REE abundances. |
| Starting Page | 255 |
| Ending Page | 261 |
| Page Count | 7 |
| File Format | PDF HTM / HTML |
| DOI | 10.1016/0012-821X(76)90217-X |
| Volume Number | 31 |
| Alternate Webpage(s) | http://deepseadrilling.org/37/Volume/dsdp37_39.pdf |
| Alternate Webpage(s) | https://doi.org/10.1016/0012-821X%2876%2990217-X |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
