Summary
Color Code Definitions Activity Notifications
Webcams 
Akutan AKSD Augustine - Homer Augustine - island Augustine - Lagoon Augustine - low light Cleveland CLCO Gareloi Great Sitkin Great Sitkin -GSIG Iliamna Iliamna IVE Kanaga Kanaga - KIMD Katmai-KABR Makushin Okmok OKIF Pavlof - BLHA Pavlof - DOL Redoubt - CI Redoubt - DFR Redoubt - Hut Shishaldin Shishaldin-BPRK Shishaldin-WTUG SpurrCKT Tanaga Wrangell
Webicorders 
RSAM 
Volcano List
About Alaska's Volcanoes Hazards from Alaska's Volcanoes Map & Alphabetical List Interactive Map
Eruption Search Volcano Search
|
Text Description: Stratigraphic Unit No. 9. Interpreted deposit type: tephra fall paleosol complex. Thickness: 7 cm. Grain size: fine lapilli to coarse ash. Bedding: massive. Sorting: well sorted. Juvenile clast type: black (dense, scoria-like clasts) and tan (pumice-like clasts, yet still poorly vesiculated). Remarks: representative sample. Munsell color-wet: 5YR 2/2. Munsell color-dry: 10YR 5/4. Grain shape: angular-subangular. Age: >3650+/-150 yr. B.P. 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 01KW-CP4 | 61.19965 | -152.12684 | Wallace, K. L. | 2001-08-10 | > 3650 ± 150 stratigraphy; 3405; | Spurr | Chakachatna River Bluff, SE of Crater Peak | Stratigraphic Unit No. 9. Interpreted deposit type: tephra fall paleosol complex. Thickness: 7 cm. Grain size: fine lapilli to coarse ash. Bedding: massive. Sorting: well sorted. Juvenile clast type: black (dense, scoria-like clasts) and tan (pumice-like clasts, yet still poorly vesiculated). Remarks: representative sample. Munsell color-wet: 5YR 2/2. Munsell color-dry: 10YR 5/4. Grain shape: angular-subangular. Age: >3650+/-150 yr. B.P. | 01KW-CP4-11 | Tephra Fall | Cumulate | Glass | 61.2 | 1.17 | 18.19 | 5.64 | 0.12 | 1.91 | 5.91 | 4.06 | 1.63 | 100 | 3405 | EMP | 5.64 | Cl=0.17 | EMP |
This website is supported by the U.S. Geological Survey under Cooperative Agreement Grant G19AC00060 and G19AC00171.
Mention of trade names or commercial products does not constitute their endorsement by the U.S. Geological Survey.
Operations
Response
Staff
Fields of Study
Glossary
Recent Images
Browse Images
