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Text Description: Massive block from base of brecciated material at Site 12. Fine grained, hypocrystalline, intersertal, seriate porphyritic with a matrix of brown glass, mesostasis, opaque, and plagioclase. Plagioclase phenocrysts (An28-An57) are up to 5.5 mm in length and commonly have sieve textured cores, normal or oscillatory zoning, and rarely display olivine inclusions or resorption embayments. Olivine phenocrysts are up to 1 mm and a few have resorption embayments or opaque inclusions. Orthopyroxene phenocrysts are up to 0.6 mm. 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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94SJP58 | 62.29 | -143.2387938 | Preece, S. J. | 1994-00-00 | Skookum Creek | Nabesna B-5, T6N, R12E, S20 | Massive block from base of brecciated material at Site 12. Fine grained, hypocrystalline, intersertal, seriate porphyritic with a matrix of brown glass, mesostasis, opaque, and plagioclase. Plagioclase phenocrysts (An28-An57) are up to 5.5 mm in length and commonly have sieve textured cores, normal or oscillatory zoning, and rarely display olivine inclusions or resorption embayments. Olivine phenocrysts are up to 1 mm and a few have resorption embayments or opaque inclusions. Orthopyroxene phenocrysts are up to 0.6 mm. | 94SJP58C | Lava | Whole-rock | 55.79 | 0.92 | 18.29 | 6.7 | 0.11 | 5.09 | 8.05 | 3.59 | 0.9 | 0.22 | 99.98 | 55 | DCP | 7.39 | 6.7 | LOI=0.32 | DCP | 15.6 | 341 | 647 | 16 | 83 | 3.9 | 2.1 | 2.4 | 20.8 | 213 | 81 | 72 | 79 | 66 | 18.3 | 55 | XRF: Rb, Zr, Nb, Th, U, Ni, Ga; DCP: Ba, Sc, V; MX: Sr, Y, Cr, Cu, Zn; |
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