Reference 1212
Macdonald, Ray; Smith, Robert L; Thomas, John E (1992) U. S. Geological Survey Professional Paper, Report: P 1523, 214 pp., 1992
| Authors | Macdonald, Ray; Smith, Robert L; Thomas, John E |
|---|---|
| Year | 1992 |
| Source | U. S. Geological Survey Professional Paper, Report: P 1523, 214 pp., 1992 |
| Pages | 214 pp. |
| Publisher | U. S. Geological Survey, Reston, VA, United States USA |
| ISSN | 1044-9612 |
| GeoRef | 1992-049812 |
| Keywords | acidic composition; acidic magmas; alkalic composition; bibliography; catalogs; chemical analysis; classification; crust; data bases; data processing; differentiation; genesis; geochemistry; glasses; global; igneous rocks; magmas; major elements; metals; minor elements; obsidian; plate tectonics; rare earths; rhyolites; subalkalic composition; trace elements; USGS; volcanic rocks |
Abstract
More than 200 new analyses for major and minor elements, including halogens, are presented for obsidians > 70 percent SiO sub 2 of worldwide occurrence. An additional 130 analyses for major elements are compiled from the literature. This data base establishes the patterns of chemical variation in obsidians in the context of five major plate-tectonic regimes of the Earth's crust, and in terms of major petrogenetic processes. All major and many minor elements are summarized individually.
82 samples from this reference
| Sample | Rock name | Major | Trace | Isotope |
|---|---|---|---|---|
| 51 | Rhyolite | yes | yes | |
| 52 | Rhyolite | yes | yes | |
| 40 | Rhyolite | yes | yes | |
| 41 | Rhyolite | yes | yes | |
| 44 | Rhyolite | yes | yes | |
| 142 | Rhyolite | yes | yes | |
| 143 | Rhyolite | yes | yes | |
| 141 | Rhyolite | yes | yes | |
| RGM-1 | Rhyolite | yes | yes | |
| 43 | Rhyolite | yes | yes | |
| 153 | Rhyolite | yes | yes | |
| 149 | Rhyolite | yes | yes | |
| 7 | Rhyolite | yes | yes | |
| 150 | Rhyolite | yes | yes | |
| 148 | Rhyolite | yes | yes | |
| 147 | Rhyolite | yes | yes | |
| MC73-1A | Rhyolite | yes | yes | |
| M72-8 | Rhyolite | yes | yes | |
| M72-21 | Rhyolite | yes | yes | |
| M72-62 | Rhyolite | yes | yes | |
| 9 | Rhyolite | yes | yes | |
| 5 | Rhyolite | yes | yes | |
| CD-3 | Rhyolite | yes | yes | |
| CD-4A | Rhyolite | yes | yes | |
| CD-5 | Rhyolite | yes | yes | |
| CD-17 | Rhyolite | yes | yes | |
| CD-22 | Rhyolite | yes | yes | |
| CD-7 | Rhyolite | yes | yes | |
| CD-20 | Rhyolite | yes | yes | |
| CD-23 | Rhyolite | yes | yes | |
| CD-30 | Rhyolite | yes | yes | |
| CD-33 | Rhyolite | yes | yes | |
| CD-8 | Rhyolite | yes | yes | |
| CD-12 | Rhyolite | yes | yes | |
| CD-14 | Rhyolite | yes | yes | |
| CD-18 | Rhyolite | yes | yes | |
| CD-19 | Rhyolite | yes | yes | |
| CD-21A | Rhyolite | yes | yes | |
| 49 | Rhyolite | yes | yes | |
| 50 | Rhyolite | yes | yes | |
| 212 | Rhyolite | yes | yes | |
| 21 | Rhyolite | yes | yes | |
| 29 | Rhyolite | yes | yes | |
| 31 | Rhyolite | yes | yes | |
| 74 | Rhyolite | yes | yes | |
| 226 | Rhyolite | yes | yes | |
| 202 | Rhyolite | yes | yes | |
| 14 | Rhyolite | yes | yes | |
| 251 | Rhyolite | yes | ||
| 257 | Rhyolite | yes | ||
| No Sample Name | Rhyolite | yes | ||
| No Sample Name | Rhyolite | yes | ||
| No Sample Name | Rhyolite | yes | ||
| No Sample Name | Rhyolite | yes | ||
| No Sample Name | Rhyolite | yes | ||
| No Sample Name | Rhyolite | yes | ||
| No Sample Name | Rhyolite | yes | ||
| No Sample Name | Rhyolite | yes | ||
| No Sample Name | Rhyolite | yes | ||
| No Sample Name | Rhyolite | yes | ||
| No Sample Name | Rhyolite | yes | yes | |
| No Sample Name | Rhyolite | yes | ||
| No Sample Name | Rhyolite | yes | yes | |
| No Sample Name | Rhyolite | yes | ||
| No Sample Name | Rhyolite | yes | ||
| No Sample Name | Rhyolite | yes | ||
| No Sample Name | Rhyolite | yes | ||
| No Sample Name | Rhyolite | yes | yes | |
| No Sample Name | Rhyolite | yes | ||
| No Sample Name | Rhyolite | yes | ||
| No Sample Name | Rhyolite | yes | ||
| No Sample Name | Rhyolite | yes | ||
| No Sample Name | Rhyolite | yes | ||
| No Sample Name | Rhyolite | yes | ||
| No Sample Name | Rhyolite | yes | yes | |
| No Sample Name | Rhyolite | yes | ||
| No Sample Name | Rhyolite | yes | ||
| No Sample Name | Rhyolite | yes | yes | |
| No Sample Name | Rhyolite | yes | yes | |
| No Sample Name | Rhyolite | yes | ||
| No Sample Name | Rhyolite | yes | yes | |
| No Sample Name | Rhyolite | yes | yes |