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Text Description: Wall-like dike, 3-5' wide, with polygonal jointing, and trending N40E. The dike bifurcates into two about 2' thick arms and cuts through silicic material (94SJP85C). Fine grained, vesicular, hypocrystalline, seriate to glomeroporphyritic with a matrix of mesostasis, opaque, plagioclase, and small pools of brown glass. Plagioclase phenocrysts (An39-An57) are up to 4.62 mm, often have sieve textured zones, sometimes have altered inclusions, and occasionally have overgrowth rims or oscillatory zoning. Orthopyroxene phenocrysts are up to 2.87 mm. Clinopyroxene phenocrysts are up to 1.87 mm and some have plagioclase inclusions. A completely altered phase, olivine? is present. 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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94SJP85A | 62.38323413 | -143.1768537 | Preece, S. J. | 1994-00-00 | Skookum Creek | Nabesna B-5, T7N, R12E, S15 | Wall-like dike, 3-5' wide, with polygonal jointing, and trending N40E. The dike bifurcates into two about 2' thick arms and cuts through silicic material (94SJP85C). Fine grained, vesicular, hypocrystalline, seriate to glomeroporphyritic with a matrix of mesostasis, opaque, plagioclase, and small pools of brown glass. Plagioclase phenocrysts (An39-An57) are up to 4.62 mm, often have sieve textured zones, sometimes have altered inclusions, and occasionally have overgrowth rims or oscillatory zoning. Orthopyroxene phenocrysts are up to 2.87 mm. Clinopyroxene phenocrysts are up to 1.87 mm and some have plagioclase inclusions. A completely altered phase, olivine? is present. | 94SJP85A | Lava | Whole-rock | 55.23 | 0.76 | 17.78 | 6.03 | 0.1 | 5.41 | 7.4 | 3.38 | 1.06 | 0.18 | 99.55 | 55 | DCP | 6.62 | 6.03 | LOI=2.65 | DCP | 16.8 | 385 | 564 | 15 | 104 | 3.2 | 2.9 | 1.7 | 16.1 | 120 | 81 | 113 | 47 | 63 | 17.1 | 55 | XRF: Rb, Zr, Nb, Th, U, Ni, Ga; DCP: Ba, Sc, V; MX: Sr, Y, Cr, Cu, Zn; |
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