|
Text Description: Rubbly outcrop of Dome G at Site 13. Locally reddish color around where the geology map indicates a vent (Lowe et al., 1982). Fine grained, holocrystalline, seriate porphyritic with a matrix of cryptocrystalline material, opaque, feldspar, orthopyroxene? and sparse zircon?. Plagioclase phenocrysts are up to 2.55 mm and both normal and oscillatory zoning are present; grains occasionally display repeated episodes of resorption and overgrowth. Opaque phenocrysts are up to 0.45 mm. Orthopyroxene phenocrysts are up to 0.98 and contain opaque inclusions. Clinopyroxene phenocrysts are up to 0.55 mm. Amphibole phenocrysts are up to 0.6 mm and most have dehydrated to opaque ± pyroxene, but a few cores are present. 90.0% matrix, 9.4% plagioclase, 0.3% orthopyroxene, 0.2% opaque, 0.1% altered phase. References: ![]() |
StationID | Latitude | Longitude | Geologist | DateVisited | Age Info | Volcano | Eruption | Location Description | Text Description | Sample ID | Sample Type 1 | Sample Type 2 | Final Unit | Material | SiO2 | TiO2 | Al2O3 | FeOT | MnO | MgO | CaO | Na2O | K2O | P2O5 | Total-majors | REF majors | METH majors | Fe2O3/Fe203T orig | FeO/FeOT orig | Volatiles csv | METH volatiles | Cs | Rb | Ba | Sr | La | Ce | Pr | Nd | Sm | Eu | Gd | Tb | Dy | Ho | Er | Tm | Yb | Lu | Y | Zr | Nb | Hf | Ta | Pb | Th | U | Sc | V | Cr | Fe | Co | Ni | Cu | Zn | Ga | Mo | As | Na | K | Ref trace1 | METH trace1 | Rb | Ba | Sr | La | Ce | Nd | Sm | Eu | Gd | Dy | Er | Yb | Lu | Y | Zr | Nb | Pb | Th | U | Sc | Ti | V | Cr | Ni | Cu | Zn | Ga | Ref trace2 | METH trace2 | Light csv | Halogen csv | other major csv | other lile csv | other ree csv | other hfse csv | other hpe csv | other tm csv | other misc csv | |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
94SJP100 | 62.35239812 | -143.1982409 | Preece, S. J. | 1994-00-00 | Skookum Creek | Nabesna B-5; T7N, R12E, S28 | 94SJP100 | Lava | Whole-rock | 68.24 | 0.42 | 16.82 | 3.01 | 0.16 | 1 | 2.66 | 5.46 | 1.95 | 0.22 | 99.79 | 55 | DCP | 3.32 | 3.01 | LOI=0.05 | DCP | 27 | 688 | 444 | 27.7 | 59.8 | 29.2 | 5.2 | 1.7 | 5 | 4.8 | 2.7 | 3 | 0.5 | 29 | 359 | 11.9 | 4.7 | 0.8 | 3.7 | 7 | bdl | 2 | 3 | 79 | 17.2 | 55 | XRF: Rb, Zr, Nb, Th, U, Ni, Ga; DCP: Ba, La, Ce, Nd, Sm, Eu, Gd, Dy, Er, Yb, Lu, Sc, V; MX: Sr, Y, Cu, Zn; |
This website is supported by the U.S. Geological Survey under Cooperative Agreement Grant G19AC00060 and G19AC00171.
Mention of trade names or commercial products does not constitute their endorsement by the U.S. Geological Survey.