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Text Description: Agglutinated wall approximately 15’ above a thick pyroclastic flow at Site 7. Fine grained, vesicular, holocrystalline, seriate porphyritic with a matrix of mesostasis, opaque, plagioclase, orthopyroxene, clinopyroxene and minor alteration lining vesicles. Plagioclase phenocrysts (An36 - An62) are up to 2.88 mm and sieve textured zones are common; normal zoning is common and some grains have oscillatory zoning. An altered phase, now composed of olivine?, of iddingsite, serpentine ± opaque is present. Orthopyroxene phenocrysts are up to 0.98 mm, and occasionally have sieve textured zones. Clinopyroxene phenocrysts are up to 0.15 mm. Opaque phenocrysts are up to 0.1 mm, but most are matrix sized. 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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95SJP5 | 62.40184642 | -143.0499124 | Preece, S. J. | 1995-00-00 | Skookum Creek | Nabesna B-5; T7N, R13E, S8 | Agglutinated wall approximately 15’ above a thick pyroclastic flow at Site 7. Fine grained, vesicular, holocrystalline, seriate porphyritic with a matrix of mesostasis, opaque, plagioclase, orthopyroxene, clinopyroxene and minor alteration lining vesicles. Plagioclase phenocrysts (An36 - An62) are up to 2.88 mm and sieve textured zones are common; normal zoning is common and some grains have oscillatory zoning. An altered phase, now composed of olivine?, of iddingsite, serpentine ± opaque is present. Orthopyroxene phenocrysts are up to 0.98 mm, and occasionally have sieve textured zones. Clinopyroxene phenocrysts are up to 0.15 mm. Opaque phenocrysts are up to 0.1 mm, but most are matrix sized. | 95SJP5 | Tephra Fall | Cumulate | Whole-rock | 57.93 | 1.03 | 16.86 | 6.53 | 0.13 | 4.32 | 7.09 | 3.52 | 1.33 | 0.25 | 100.64 | 55 | DCP | 7.25 | 6.53 | LOI=1.02 | DCP | 27 | 514 | 565 | 23 | 153 | 5.2 | 4.3 | 1.8 | 21.2 | 162 | 167 | 121 | 59 | 68 | 17.6 | 55 | XRF: Rb, Zr, Nb, Th, U, Ni, Ga; DCP: Ba, Sc, V; MX: Sr, Y, Cr, Cu, Zn; |
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