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Text Description: Stratigraphic Unit No. 3. Interpreted deposit type: tephra fall. Thickness: 62 cm cumulative (unit broken into four subunits based on bedding characteristics). Grain size: coarse lapilli to coarse ash. Bedding: alternating massive and normally graded subunits (see subunits below). Sorting: massive beds-well sorted; graded beds-poorly sorted. Juvenile clast type: black (dense, scoria-like clasts). Remarks: juvenile scoria clasts from base, correlative with AT-207. Munsell color-wet: 10YR 5.5/3 (altered); YR 2/2 (fresh). Munsell color-dry: 10YR 6/2 (altered); 10YR 2/2 (fresh). Grain shape: angular. Age: 840+/-60 yr. B.P. >1953. References:  Characterization and discrimination of Holocene tephra-fall deposits, Mount Spurr volcano, Alaska |
| StationID | Latitude | Longitude | Geologist | DateVisited | Age Info | Volcano | Eruption | Location Description | Text Description | Sample ID | Sample Type 1 | Sample Type 2 | Final Unit | Material | Coeff | 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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| 01KW-CP1-G3 | 61.22466 | -152.1986 | Wallace, K. L. | 2001-08-06 | < 840 ± 60 14C; 831; From Waythomas (2001); age of wood collected from within a debris-flow deposit in Bench Gully. | Spurr | Bench Gully-G3 | Stratigraphic Unit No. 3. Interpreted deposit type: tephra fall. Thickness: 62 cm cumulative (unit broken into four subunits based on bedding characteristics). Grain size: coarse lapilli to coarse ash. Bedding: alternating massive and normally graded subunits (see subunits below). Sorting: massive beds-well sorted; graded beds-poorly sorted. Juvenile clast type: black (dense, scoria-like clasts). Remarks: juvenile scoria clasts from base, correlative with AT-207. Munsell color-wet: 10YR 5.5/3 (altered); YR 2/2 (fresh). Munsell color-dry: 10YR 6/2 (altered); 10YR 2/2 (fresh). Grain shape: angular. Age: 840+/-60 yr. B.P. >1953. | 01KW-CP1-G3-1 | Tephra Fall | Cumulate | Glass | 63.38 | 1.32 | 16.7 | 6.32 | 0.16 | 1.83 | 5.54 | 2.93 | 1.53 | 100 | 3405 | EMP | 6.32 | Cl=0.28 | EMP |
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