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Text Description: Approximately 2 m thick, subvertical dike trending N45E and cutting through Dome A at Site 2. Fine-grained, seriate, pilotaxitic, very altered, intergranular, hypocrystalline with a matrix of alteration, opaque, plagioclase, lath shaped clinopyroxene, mesostasis, and a very small amount of brown glass. Plagioclase phenocrysts (An28-An58) are 1.35-0.05 mm, sieve textured cores are common; most have normal zoning; some have oscillatory zoning. Clinopyroxene phenocrysts have two populations, 0.6 -0.2 mm and 0.15-0.5 (lath shaped). Olivine phenocrysts are 1.9 - 0.15 mm; most are completely altered, with only a few cores remaining; some have opaque inclusions. 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 | |
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93SJP29 | 62.43073744 | -143.1032472 | Preece, S. J. | 1993-00-00 | Skookum Creek | Nabesna B-5, T8N, R12E, S36 | Approximately 2 m thick, subvertical dike trending N45E and cutting through Dome A at Site 2. Fine-grained, seriate, pilotaxitic, very altered, intergranular, hypocrystalline with a matrix of alteration, opaque, plagioclase, lath shaped clinopyroxene, mesostasis, and a very small amount of brown glass. Plagioclase phenocrysts (An28-An58) are 1.35-0.05 mm, sieve textured cores are common; most have normal zoning; some have oscillatory zoning. Clinopyroxene phenocrysts have two populations, 0.6 -0.2 mm and 0.15-0.5 (lath shaped). Olivine phenocrysts are 1.9 - 0.15 mm; most are completely altered, with only a few cores remaining; some have opaque inclusions. | 93SJP29 | Lava | Whole-rock | 53.89 | 0.77 | 17.76 | 5.87 | 0.12 | 5.16 | 9 | 3.43 | 1.18 | 0.16 | 100.03 | 55 | DCP | 6.48 | 5.87 | LOI=2.57 | DCP | 18.5 | 392 | 633 | 14 | 87 | 2.7 | 1.1 | 1.2 | 20.8 | 171 | 42 | 83 | 74 | 59 | 17.3 | 55 | XRF: Rb, Zr, Nb, Th, U, Ni, Ga; DCP: Ba, Sc, V; MX: Sr, Y, Cr, Cu, Zn; |
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