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Text Description: Large plates in an outcrop above red scoria. Laterally to the west of 94SJP80A at Site 9. Fine-grained, holocrystalline, seriate to glomeroporphyritic with a matrix of cryptocrystalline material, opaque and plagioclase. Plagioclase phenocrysts (An39 - An64) are 2.6-0.1 mm and have sieve textured zones, complex zoning, and occasionally have resorption embayments or poikilitic pyroxene inclusions. Orthopyroxene phenocrysts are up to 0.7 mm and sometimes contain a clinopyroxene core. Clinopyroxene phenocrysts are up to 1 mm and frequently occurs as inclusions in orthopyroxene or plagioclase, twinning is common. Opaque phenocrysts are up to 0.2 mm. 76.6% matrix, 19.6% plagioclase, 1.2% clinopyroxene, 2.4% orthopyroxene, 0.2% opaque. 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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94SJP80B | 62.37740057 | -143.0987989 | Preece, S. J. | 1994-00-00 | Skookum Creek | Nabesna B-5; T7N, R12E, S24 | Large plates in an outcrop above red scoria. Laterally to the west of 94SJP80A at Site 9. Fine-grained, holocrystalline, seriate to glomeroporphyritic with a matrix of cryptocrystalline material, opaque and plagioclase. Plagioclase phenocrysts (An39 - An64) are 2.6-0.1 mm and have sieve textured zones, complex zoning, and occasionally have resorption embayments or poikilitic pyroxene inclusions. Orthopyroxene phenocrysts are up to 0.7 mm and sometimes contain a clinopyroxene core. Clinopyroxene phenocrysts are up to 1 mm and frequently occurs as inclusions in orthopyroxene or plagioclase, twinning is common. Opaque phenocrysts are up to 0.2 mm. 76.6% matrix, 19.6% plagioclase, 1.2% clinopyroxene, 2.4% orthopyroxene, 0.2% opaque. | 94SJP80B | Lava | Whole-rock | 58.36 | 1.18 | 17.62 | 6.84 | 0.13 | 3.39 | 6.71 | 4.41 | 1.29 | 0.21 | 100.41 | 55 | DCP | 7.58 | 6.84 | LOI=-0.14 | DCP | 23.8 | 486 | 514 | 13.8 | 32.2 | 15.9 | 3.4 | 1.3 | 3.7 | 3.6 | 2.1 | 2 | 0.3 | 23 | 141 | 5.2 | 1.4 | 2.5 | 21.3 | 181 | 13 | 11 | 39 | 75 | 18.6 | 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, Cr, Cu, Zn; |
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