| Online link | https://geo-nsdi.er.usgs.gov/metadata/open-file/97-430/metadata.faq.html |
|---|---|
| Description | This Open-File report is a digital geologic map database. This digital map database is compiled from previously published sources combined with some new mapping and modifications in nomenclature. The geologic map database delineates map units that are |
| Originators | Yerkes, Robert F. and Graham, Scott E. |
| Publication | U.S. Geological Survey Open-File Report 97-430 |
Polygon attribute table of geology
| Label | Definition |
|---|---|
| ID | Row number |
| Island | Word descriptor for formal name of major island that contains geologic polygon |
| Volcano | Word descriptor for abbreviation of shield volcano |
| Strat_code | Positive integer as numeric descriptor corresponding to stratigraphic group |
| Unit_symbol | 10 or fewer characters forming mnemonic letter code for labeling geologic map units |
| Age_group | Nonnegative integer coded as time interval for emplacement of stratigraphic unit |
| Age_range | 30 or fewer characters describing time interval of emplacement |
| Formation_name | 80 or fewer characters giving stratigraphic formational name |
| Member_name | 30 or fewer characters giving stratigraphic formational name of member rank where needed to fully distinguish geologic unit |
| Stearns_unit | 10 or fewer characters as mnemonic code used on some previously published geologic reference maps for labeling geologic map units |
| Rock_type | 40 or fewer characters giving generalized name that defines nature of rocks or deposits that form stratigraphic unit |
| Lithology | 50 or fewer characters giving specific additional information about type of lava flows, grain size of clastic rocks, or origin of some tephra deposits |
| Volc_stage | 7 or fewer characters assigning volcanic units to one of three common growth stages in idealized model of oceanic volcanic evolution, namely shield, postshield, or rejuvenated stage, with additional terms for alluvium or open water |
| Composition | 40 or fewer characters Assigning volcanic units to petrologic classification most closely matching whole-rock chemical composition of stratigraphic formation or individual units contained within |
| Data_source | 40 or fewer characters assigning to each polygon either a previously published referable document or the person responsible for new mapping |
Arc attribute table of structure
| Label | Definition |
|---|---|
| ID | Row number |
| Island | Word descriptor for formal name of major island that contains structural arc |
| Volcano | Word descriptor for abbreviation of shield volcano |
| Line_code | Positive integer as numeric descriptor corresponding to fault characteristic |
| Description | Short word phrase summarizing structural type, with one-to-one correspondence to Line_code definitions |
| Caldera_relation | Short word Yes indicating fault is one of several, possibly nested, faults that define circular or ovaline caldera subsidence structure; otherwise blank |
| Caldera_name | Name of 15 characters or fewer for geographic caldera associated with Caldera_relation faults |
| Data_source | 40 or fewer characters assigning to each arc (fault) either a previously published referable document or the person responsible for new mapping |
Arc attribute table of thin ash beds
| Label | Definition |
|---|---|
| ID | Row number |
| Island | Word descriptor for formal name of major island that contains structural arc |
| Volcano | Word descriptor for abbreviation of shield volcano |
| Strat_code | Positive integer as numeric descriptor corresponding to stratigraphic group |
| Unit_symbol | 10 or fewer characters forming mnemonic letter code for labeling geologic map units |
| Stearns_unit | 10 or fewer characters as mnemonic code used on some previously published geologic reference maps for labeling geologic map units, with one-to-one correspondence to Attribute_Label Strat_code defined and enumerated previously in this metadata document |
| Volc_stage | 7 or fewer characters assigning volcanic units to one of three common growth stages in idealized model of oceanic volcanic evolution, namely shield, postshield, or rejuvenated stage, though no postshield ash beds were mapped by previous authors |
| Data_source | 40 or fewer characters assigning to each arc (fault) either a previously published referable document or the person responsible for new mapping |