Institution
United States Geological Survey
Government•Reston, Virginia, United States•
About: United States Geological Survey is a government organization based out in Reston, Virginia, United States. It is known for research contribution in the topics: Population & Groundwater. The organization has 17899 authors who have published 51097 publications receiving 2479125 citations. The organization is also known as: USGS & US Geological Survey.
Topics: Population, Groundwater, Volcano, Aquifer, Sediment
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TL;DR: In this paper, the compositions of biotites coexisting with sanidine and magnetite were determined for a variety of conditions of furo, fs, and temperature, and the compositions lie in the ternary system KFes2+AlSLOro(OH)r, annite-KMg32+AlSraOro (OII)2, phlogopite-kFe3r+Al SigOu (H-J, ''oxybiotite''.
Abstract: Biotites on the join phlogopite-annite react to form a number of assemblages and the reactions are governed by the independent intensive parameters, temperature, fugacity of HrO (fnro), and fugacity of oxygen (f6 r) . The most common of these assemblages in natural occurrences are biotite-sanidine-hematite; biotite-sanidine-magnetite; and biotite-leuciteolivine-magnetite. The compositions of biotites coexisting with sanidine and magnetite were determined for a variety of conditions of furo, fs, and temperature. The compositions lie in the ternary system KFes2+AlSLOro (OH)r, annite-KMg32+AlSraOro (OII)2, phlogopite-KFe3r+AlSigOu (H-J, \"oxybiotite.\" Application of regular solution theory to KFerAlSiaOro(OH)s in ternary solid solution yields the following relationship:
735 citations
TL;DR: Fire has been a factor throughout the history of land-plant evolution and is not strictly a Neogene phenomenon, and Mesozoic fossils show evidence of fire-adaptive traits and, in some lineages, these might have persisted to the present as fire adaptations.
734 citations
TL;DR: The history of the Taupo Volcanic Zone (TVZ) can be divided into two categories: the old TVZ from 2.0 Ma to 0.34 Ma and the young TVZ between 0.9 and 0.6 Ma as discussed by the authors.
734 citations
TL;DR: Future intensive wastewater monitoring programs in Wisconsin may be limited to the six antibiotic compounds detected in this study, which were within an order of magnitude of those reported for similar systems in Europe and Canada.
732 citations
TL;DR: Measurements and analysis of a boreal forest fire, integrating the effects of greenhouse gases, aerosols, black carbon deposition on snow and sea ice, and postfire changes in surface albedo imply that future increases in boreal fire may not accelerate climate warming.
Abstract: We report measurements and analysis of a boreal forest fire, integrating the effects of greenhouse gases, aerosols, black carbon deposition on snow and sea ice, and postfire changes in surface albedo. The net effect of all agents was to increase radiative forcing during the first year (34 ± 31 Watts per square meter of burned area), but to decrease radiative forcing when averaged over an 80-year fire cycle (–2.3 ± 2.2 Watts per square meter) because multidecadal increases in surface albedo had a larger impact than fire-emitted greenhouse gases. This result implies that future increases in boreal fire may not accelerate climate warming.
730 citations
Authors
Showing all 18026 results
| Name | H-index | Papers | Citations |
|---|---|---|---|
| Derek R. Lovley | 168 | 582 | 95315 |
| Steven Williams | 144 | 1375 | 86712 |
| Thomas J. Smith | 140 | 1775 | 113919 |
| Jillian F. Banfield | 127 | 562 | 60687 |
| Kurunthachalam Kannan | 126 | 820 | 59886 |
| J. D. Hansen | 122 | 975 | 76198 |
| John P. Giesy | 114 | 1162 | 62790 |
| David Pollard | 108 | 438 | 39550 |
| Alan Cooper | 108 | 746 | 45772 |
| Gordon E. Brown | 100 | 454 | 32152 |
| Gerald Schubert | 98 | 614 | 34505 |
| Peng Li | 95 | 1548 | 45198 |
| Vipin Kumar | 95 | 614 | 59034 |
| Susan E. Trumbore | 95 | 337 | 34844 |
| Alfred S. McEwen | 92 | 624 | 28730 |