Geochemical correlations and implications for the magmatic evolutionof basalt flow groups at the Idaho National Engineering andEnvironmental Laboratory
Hughes, Scott S; McCurry, Michael; Geist, Dennis J (2002) Geochemical correlations and implications for the magmatic evolutionof basalt flow groups at the Idaho National Engineering andEnvironmental Laboratory. Special Paper - Geological Society of America, vol.353, pp.151-173,2002
| Authors | Hughes, Scott S; McCurry, Michael; Geist, Dennis J |
|---|---|
| Year | 2002 |
| Title | Geochemical correlations and implications for the magmatic evolutionof basalt flow groups at the Idaho National Engineering andEnvironmental Laboratory |
| Source | Special Paper - Geological Society of America, vol.353, pp.151-173,2002 |
| Book editors | Link, Paul Karl; Mink, L L |
| ISBN | 813723531 |
| ISSN | 0072-1077 |
| GeoRef | 2002-042833 |
| Keywords | alkaline earth metals; basalts; Bingham County Idaho; Butte CountyIdaho; chemical composition; Clark County Idaho; Columbia Plateau;correlation; geochemical logging; Idaho; igneous rocks; INEEL; isotoperatios; isotopes; Jefferson County Idaho; lava flows; magmatism;metals; Nd-144/Nd-143; neodymium; rare earths; Snake River plain;Sr-87/Sr-86; stable isotopes; strontium; United States; volcanicrocks; volcanism; well-logging; whole rock |
Abstract
Whole-rock major element, trace element, and Sr-Nd isotopic analysesof samples taken from Idaho National Engineering and EnvironmentalLaboratory INEEL core holes are used to correlate subsurfacetholeiitic basalt lava flow groups in the Test Area North TANregion, and to evaluate time-space variations in their geochemicalsignatures. New super 40 Ar/ super 39 Ar ages are included tosupplement existing dates in order to confirm major eruptive episodes.Incompatible trace elements range by factors of approximately 7-10;major oxides, especially MgO, range by factors of approximately 2-3;initial super 87 Sr/ super 86 Sr ratios range from approximately0.706 to 0.708; and super 143 Nd/ super 144 Nd ratios range fromapproximately 0.706 to 0.708; and super 143 Nd/ super 144 Ndratios range from approximately 0.5122 to 0.5125. These data suggestthat each flow group represents a single shield-building monogeneticeruption derived from a separate magma batch. The geochemical patternsof flow groups older than ca. 0.8 Ma at TAN are compared to youngerca. 0.2-0.6 Ma flow groups located in the southern INEEL approximately 30 km distance to assess regional variations. No flowgroups are known to correlate between these two regions although someTAN flow groups are found in core hole 2-2A located approximately 10km south. Only the deepest flow group at TAN, with three measuredradiometric ages ranging from 2.38 to 2.46 Ma, is correlated to corehole USGS 126-A located on Lava Ridge approximately 9 km northwest ofTAN as well as core hole 2-2A. Recurrence of fairly primitiveMgO-rich, La-poor flow groups in the northern and southern INEELsuggests that similar processes of magma genesis and shield growth areoperative on eastern Snake River Plain volcanic rift zones regardlessof age.
276 samples from this reference
| Sample | Rock name | Major | Trace | Isotope |
|---|---|---|---|---|
| ICP121-125 | Basalt | yes | yes | yes |
| 2A-54 | Basalt | yes | yes | yes |
| 2A-298 | Basalt | yes | yes | yes |
| 2A-393 | Basalt | yes | yes | yes |
| 2A-422 | Basalt | yes | yes | yes |
| 2A-482 | Basalt | yes | yes | yes |
| 2A-586 | Basalt | yes | yes | yes |
| 2A-717 | Basalt | yes | yes | yes |
| 2A-821 | Basalt | yes | yes | yes |
| 2A-909 | Basalt | yes | yes | yes |
| 2A-1269 | Basalt | yes | yes | yes |
| 2A-1927 | Basalt | yes | yes | yes |
| 2A-2023 | Basalt | yes | yes | yes |
| 2A-2327 | Basalt | yes | yes | yes |
| 2A-2349 | Basalt | yes | yes | yes |
| GIN5-30 | Basalt | yes | yes | yes |
| GIN5-119 | Basalt | yes | yes | yes |
| GIN5-241 | Basalt | yes | yes | yes |
| GIN5-327 | Basalt | yes | yes | yes |
| GIN5-403 | Basalt | yes | yes | yes |
| GIN6-88 | Basalt | yes | yes | yes |
| GIN6-133 | Basalt | yes | yes | yes |
| GIN6-190 | Basalt | yes | yes | yes |
| JC-C-1 | Basalt | yes | yes | yes |
| JC-C-2 | Basalt | yes | yes | yes |
| T34-215 | Basalt | yes | yes | yes |
| T34-283 | Basalt | yes | yes | yes |
| T34-334 | Basalt | yes | yes | yes |
| T34-416 | Basalt | yes | yes | yes |
| TCH1-61 | Basalt | yes | yes | yes |
| TCH1-124 | Basalt | yes | yes | yes |
| TCH1-216 | Basalt | yes | yes | yes |
| TCH1-250 | Basalt | yes | yes | yes |
| TCH1-370 | Basalt | yes | yes | yes |
| TCH1-596 | Basalt | yes | yes | yes |
| TCH2-58 | Basalt | yes | yes | yes |
| TCH2-58 | Basalt | yes | yes | yes |
| TCH2-99 | Basalt | yes | yes | yes |
| TCH2-151 | Basalt | yes | yes | yes |
| TCH2-169 | Basalt | yes | yes | yes |
| TCH2-197 | Basalt | yes | yes | yes |
| TCH2-252 | Basalt | yes | yes | yes |
| TCH2-252 | Basalt | yes | yes | yes |
| TCH2-296 | Basalt | yes | yes | yes |
| TCH2-366 | Basalt | yes | yes | yes |
| TCH2-465 | Basalt | yes | yes | yes |
| TCH2-636 | Basalt | yes | yes | yes |
| TCH2-1113 | Basalt | yes | yes | yes |
| TCH1-53 | Basalt | yes | yes | |
| TCH1-82 | Basalt | yes | yes | |
| TCH1-87 | Basalt | yes | yes | |
| TCH1-94 | Basalt | yes | yes | |
| TCH1-102 | Basalt | yes | yes | |
| TCH1-162 | Basalt | yes | yes | |
| TCH1-198 | Basalt | yes | yes | |
| TCH1-240 | Basalt | yes | yes | |
| TCH1-264 | Basalt | yes | yes | |
| TCH1-288 | Basalt | yes | yes | |
| TCH1-305 | Basalt | yes | yes | |
| TCH1-323 | Basalt | yes | yes | |
| TCH1-425 | Basalt | yes | yes | |
| TCH1-465 | Basalt | yes | yes | |
| TCH1-502 | Basalt | yes | yes | |
| TCH1-533 | Basalt | yes | yes | |
| TCH1-571 | Basalt | yes | yes | |
| TCH2-83 | Basalt | yes | yes | |
| TCH2-119 | Basalt | yes | yes | |
| TCH2-133 | Basalt | yes | yes | |
| TCH2-139 | Basalt | yes | yes | |
| TCH2-232 | Basalt | yes | yes | |
| TCH2-327 | Basalt | yes | yes | |
| TCH2-433 | Basalt | yes | yes | |
| TCH2-518 | Basalt | yes | yes | |
| TCH2-534 | Basalt | yes | yes | |
| TCH2-559 | Basalt | yes | yes | |
| TCH2-591 | Basalt | yes | yes | |
| TCH2-752 | Basalt | yes | yes | |
| TCH2-903 | Basalt | yes | yes | |
| TCH2-1017 | Basalt | yes | yes | |
| GIN6-71 | Basalt | yes | yes | |
| GIN6-112 | Basalt | yes | yes | |
| GIN6-159 | Basalt | yes | yes | |
| GIN6-168 | Basalt | yes | yes | |
| GIN6-199 | Basalt | yes | yes | |
| 2A-45 | Basalt | yes | yes | |
| 2A-266 | Basalt | yes | yes | |
| 2A-333 | Basalt | yes | yes | |
| 2A-352 | Basalt | yes | yes | |
| 2A-443 | Basalt | yes | yes | |
| 2A-462 | Basalt | yes | yes | |
| 2A-495 | Basalt | yes | yes | |
| 2A-513 | Basalt | yes | yes | |
| 2A-543 | Basalt | yes | yes | |
| 2A-608 | Basalt | yes | yes | |
| 2A-618 | Basalt | yes | yes | |
| 2A-655 | Basalt | yes | yes | |
| 2A-666 | Basalt | yes | yes | |
| 2A-678 | Basalt | yes | yes | |
| 2A-756 | Basalt | yes | yes | |
| 2A-770 | Basalt | yes | yes | |
| 2A-779 | Basalt | yes | yes | |
| 2A-808 | Basalt | yes | yes | |
| 2A-843 | Basalt | yes | yes | |
| 2A-930 | Basalt | yes | yes | |
| 2A-955 | Basalt | yes | yes | |
| 2A-1170 | Basalt | yes | yes | |
| 2A-1190 | Basalt | yes | yes | |
| 2A-1212 | Basalt | yes | yes | |
| 2A-1234 | Basalt | yes | yes | |
| 2A-1242 | Basalt | yes | yes | |
| 2A-1284 | Basalt | yes | yes | |
| 2A-1302 | Basalt | yes | yes | |
| 2A-1324 | Basalt | yes | yes | |
| 2A-1335 | Basalt | yes | yes | |
| 2A-1575 | Basalt | yes | yes | |
| 2A-1613 | Basalt | yes | yes | |
| 2A-1777 | Basalt | yes | yes | |
| 2A-1911 | Basalt | yes | yes | |
| 2A-1946 | Basalt | yes | yes | |
| 2A-1984 | Basalt | yes | yes | |
| 2A-2039 | Basalt | yes | yes | |
| 2A-2076 | Basalt | yes | yes | |
| 2A-2096 | Basalt | yes | yes | |
| 2A-2140 | Basalt | yes | yes | |
| 2A-2156 | Basalt | yes | yes | |
| 2A-2201 | Basalt | yes | yes | |
| 2A-2224 | Basalt | yes | yes | |
| 2A-2269 | Basalt | yes | yes | |
| 2A-2305 | Basalt | yes | yes | |
| 2A-2354 | Basalt | yes | yes | |
| 2A-2377 | Basalt | yes | yes | |
| 2A-2392 | Basalt | yes | yes | |
| 2A-2403 | Basalt | yes | yes | |
| 2A-2416 | Basalt | yes | yes | |
| 2A-2424 | Basalt | yes | yes | |
| 2A-2446 | Basalt | yes | yes | |
| 2A-2468 | Basalt | yes | yes | |
| 2A-2482 | Basalt | yes | yes | |
| 2A-2512 | Basalt | yes | yes | |
| 2A-2582 | Basalt | yes | yes | |
| 2A-2609 | Basalt | yes | yes | |
| 23-48 | Basalt | yes | yes | |
| 23-65 | Basalt | yes | yes | |
| 23-86 | Basalt | yes | yes | |
| 23-101 | Basalt | yes | yes | |
| 23-138 | Basalt | yes | yes | |
| 23-179 | Basalt | yes | yes | |
| 23-200 | Basalt | yes | yes | |
| 23-215 | Basalt | yes | yes | |
| 23-234 | Basalt | yes | yes | |
| 23-248 | Basalt | yes | yes | |
| 23-266 | Basalt | yes | yes | |
| 23-291 | Basalt | yes | ||
| 23-306 | Basalt | yes | yes | |
| 23-327 | Basalt | yes | yes | |
| 23-350 | Basalt | yes | yes | |
| 23-364 | Basalt | yes | yes | |
| 23-384 | Basalt | yes | yes | |
| 23-419 | Basalt | yes | yes | |
| 23-462 | Basalt | yes | yes | |
| 23-479 | Basalt | yes | yes | |
| 23-502 | Basalt | yes | yes | |
| 23-520 | Basalt | yes | yes | |
| 23-548 | Basalt | yes | yes | |
| 23-575 | Basalt | yes | yes | |
| 23-608 | Basalt | yes | yes | |
| 23-628 | Basalt | yes | yes | |
| 23-647 | Basalt | yes | yes | |
| 23-663 | Basalt | yes | yes | |
| 23-688 | Basalt | yes | yes | |
| 23-715 | Basalt | yes | yes | |
| 23-732 | Basalt | yes | yes | |
| 80-45 | Basalt | yes | yes | |
| 80-51 | Basalt | yes | yes | |
| 80-69 | Basalt | yes | yes | |
| 80-91 | Basalt | yes | yes | |
| 80-118 | Basalt | yes | yes | |
| 80-135 | Basalt | yes | yes | |
| 80-154 | Basalt | yes | yes | |
| 80-188 | Basalt | yes | yes | |
| 80-203 | Basalt | yes | yes | |
| TRA5-79 | Basalt | yes | yes | |
| TRA5-85 | Basalt | yes | yes | |
| TRA5-109 | Basalt | yes | yes | |
| TRA5-120 | Basalt | yes | yes | |
| TRA5-140 | Basalt | yes | yes | |
| TRA5-166 | Basalt | yes | yes | |
| TRA5-195 | Basalt | yes | yes | |
| TRA5-204 | Basalt | yes | yes | |
| TRA5-235 | Basalt | yes | yes | |
| TRA5-249 | Basalt | yes | yes | |
| TRA5-295 | Basalt | yes | yes | |
| 2A-2526 | Basalt | yes | yes | |
| 2A-2555 | Basalt | yes | yes | |
| 126A-16 | Basalt | yes | yes | |
| 126A-31 | Basalt | yes | yes | |
| 126A-38 | Basalt | yes | yes | |
| 126A-48 | Basalt | yes | yes | |
| 126A-60 | Basalt | yes | yes | |
| 126A-73 | Basalt | yes | yes |
First 200 shown; open the results for all.