{"pageNumber":"4451","pageRowStart":"111250","pageSize":"25","recordCount":184825,"records":[{"id":70123838,"text":"70123838 - 1990 - Effects of a coal-fired power plant on the rock lichen Rhizoplaca melanophthalma: chlorophyll degradation and electrolyte leakage","interactions":[],"lastModifiedDate":"2014-09-09T13:46:43","indexId":"70123838","displayToPublicDate":"1990-09-01T13:45:21","publicationYear":"1990","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3547,"text":"The Bryologist","active":true,"publicationSubtype":{"id":10}},"title":"Effects of a coal-fired power plant on the rock lichen Rhizoplaca melanophthalma: chlorophyll degradation and electrolyte leakage","docAbstract":"Chlorophyll degradation and electrolyte leakage were measured for the umbilicate desert lichen Rhizoplaca melanophthalma (Ram.) Leuck. & Poelt in the vicinity of a coal-fired power plant near Page, Arizona. Patterns of lichen damage indicated by chlorophyll degradation were similar to those indicated by electrolyte leakage. Regression analyses of chlorophyll degradation as well as electrolyte leakage on distance from the power plant were significant (p < 0.001), suggesting that lichen damage decreased with increasing distance from the power plant. Mean values for both variables at the two sites closest to the power plant (7 and 12 km) differed significantly from values for the two sites farthest from the plant (21 and 42 km; p < 0.001). Mean values within each group (7 and 12 km; 21 and 42 km) do not differ significantly for either parameter. It is suggested that effluents from the power plant combine with local weather factors to produce the observed levels of damage.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"The Bryologist","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"American Bryological and Lichenological Society","publisherLocation":"Binghamton, NY","doi":"10.2307/3243518","usgsCitation":"Belnap, J., and Harper, K.T., 1990, Effects of a coal-fired power plant on the rock lichen Rhizoplaca melanophthalma: chlorophyll degradation and electrolyte leakage: The Bryologist, v. 93, no. 3, p. 309-312, https://doi.org/10.2307/3243518.","productDescription":"4 p.","startPage":"309","endPage":"312","numberOfPages":"4","costCenters":[],"links":[{"id":293544,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":293543,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.2307/3243518"}],"volume":"93","issue":"3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"54101453e4b07ab1cd980916","contributors":{"authors":[{"text":"Belnap, Jayne 0000-0001-7471-2279 jayne_belnap@usgs.gov","orcid":"https://orcid.org/0000-0001-7471-2279","contributorId":1332,"corporation":false,"usgs":true,"family":"Belnap","given":"Jayne","email":"jayne_belnap@usgs.gov","affiliations":[{"id":568,"text":"Southwest Biological Science Center","active":true,"usgs":true}],"preferred":true,"id":500371,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Harper, Kimball T.","contributorId":74307,"corporation":false,"usgs":true,"family":"Harper","given":"Kimball","email":"","middleInitial":"T.","affiliations":[],"preferred":false,"id":500372,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":116,"text":"116 - 1990 - Guidelines for the collection, treatment, and analysis of water samples: U.S. Geological Survey Western Region field manual","interactions":[],"lastModifiedDate":"2014-08-04T13:18:02","indexId":"116","displayToPublicDate":"1990-09-01T13:16:53","publicationYear":"1990","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":6,"text":"USGS Unnumbered Series"},"title":"Guidelines for the collection, treatment, and analysis of water samples: U.S. Geological Survey Western Region field manual","docAbstract":"No abstract available.","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/116","usgsCitation":"Sylvester, M.A., Kister, L.R., and Garrett, W.B., 1990, Guidelines for the collection, treatment, and analysis of water samples: U.S. Geological Survey Western Region field manual, vi, 144 p., https://doi.org/10.3133/116.","productDescription":"vi, 144 p.","numberOfPages":"150","costCenters":[],"links":[{"id":291613,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"53e09e5ae4b0beb42bdca452","contributors":{"authors":[{"text":"Sylvester, Marc A.","contributorId":90706,"corporation":false,"usgs":true,"family":"Sylvester","given":"Marc","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":141950,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Kister, Lester R.","contributorId":83451,"corporation":false,"usgs":true,"family":"Kister","given":"Lester","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":141949,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Garrett, W. B.","contributorId":23963,"corporation":false,"usgs":true,"family":"Garrett","given":"W.","email":"","middleInitial":"B.","affiliations":[],"preferred":false,"id":141948,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":5222578,"text":"5222578 - 1990 - Survival rates of birds of tropical and temperate forests: Will the dogma survive?","interactions":[],"lastModifiedDate":"2023-02-17T15:28:28.977736","indexId":"5222578","displayToPublicDate":"1990-09-01T12:19:08","publicationYear":"1990","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":740,"text":"American Naturalist","active":true,"publicationSubtype":{"id":10}},"title":"Survival rates of birds of tropical and temperate forests: Will the dogma survive?","docAbstract":"Survival rates of tropical forest birds are widely assumed to be high relative to the survival rates of temperate forest birds. Much life-history theory is based on this assumption despite the lack of empirical data to support it. We provide the first detailed comparison of survival rates of tropical and temperate forest birds based on extensive data bases and modern capture-recapture models. We find no support for the conventional wisdom. Because clutch size is only one component of reproductive rate, the frequently assumed, simple association between clutch size and adult survival rates should not necessarily be expected. Our results emphasize the need to consider components of fecundity in addition to clutch size when comparing the life histories of tropical and temperate birds and suggest similar considerations in the development of vertebrate life-history theory.","language":"English","publisher":"University of Chicago Press","doi":"10.1086/285098","usgsCitation":"Karr, J.R., Nichols, J.D., Klimkiewicz, M.K., and Brawn, J.D., 1990, Survival rates of birds of tropical and temperate forests: Will the dogma survive?: American Naturalist, v. 136, no. 3, p. 277-291, https://doi.org/10.1086/285098.","productDescription":"15 p.","startPage":"277","endPage":"291","numberOfPages":"15","costCenters":[{"id":531,"text":"Patuxent Wildlife Research Center","active":true,"usgs":true}],"links":[{"id":194176,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"136","issue":"3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4ae0e4b07f02db6880dc","contributors":{"authors":[{"text":"Karr, James R.","contributorId":176566,"corporation":false,"usgs":false,"family":"Karr","given":"James","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":336567,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Nichols, James D. 0000-0002-7631-2890 jnichols@usgs.gov","orcid":"https://orcid.org/0000-0002-7631-2890","contributorId":200533,"corporation":false,"usgs":true,"family":"Nichols","given":"James","email":"jnichols@usgs.gov","middleInitial":"D.","affiliations":[{"id":531,"text":"Patuxent Wildlife Research Center","active":true,"usgs":true}],"preferred":true,"id":336564,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Klimkiewicz, M. K.","contributorId":53490,"corporation":false,"usgs":true,"family":"Klimkiewicz","given":"M.","email":"","middleInitial":"K.","affiliations":[],"preferred":false,"id":336566,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Brawn, J. D.","contributorId":31850,"corporation":false,"usgs":true,"family":"Brawn","given":"J.","email":"","middleInitial":"D.","affiliations":[],"preferred":false,"id":336565,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70124947,"text":"70124947 - 1990 - Soil-vegetation correlations in the Connecticut River floodplain of Western Massachusetts","interactions":[],"lastModifiedDate":"2014-09-12T12:07:34","indexId":"70124947","displayToPublicDate":"1990-09-01T12:00:50","publicationYear":"1990","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":9,"text":"Other Report"},"title":"Soil-vegetation correlations in the Connecticut River floodplain of Western Massachusetts","docAbstract":"As part of a national study analyzing the relation between hydric soils and wetland vegetation, the vegetation associated with a series of known soils was sampled along the Connecticut River floodplain in Massachusetts. Weighted average and index average (presence/absence) values were calculated for vegetation using wetland ecological index values from the National List of Plant Species that Occur in Wetlands developed by the U.S. Fish and Wildlife Service and procedures developed by T. R. Wentworth and G. P. Johnson at North Carolina State University. Good correspondence between soils and vegetation was recorded with two exceptions. Two typically nonhydric soils were determined to be hydric based on vegetation analyses. Examination of the groundwater hydrology of these two soils confirmed their hydric nature. The authors suggested that one of these soils may need to be redefined and they also suggested that the assigned index values for a few species of vegetation should be reexamined. However, in general the index average values of vegetation based on published wetland index values corresponded with the hydric and nonhydric nature of soils.","language":"English","publisher":"U.S. Dept. of the Interior, Fish and Wildlife Service","publisherLocation":"Washington, D.C.","usgsCitation":"Veneman, P., and Tiner, R.W., 1990, Soil-vegetation correlations in the Connecticut River floodplain of Western Massachusetts, v, 51 p.","productDescription":"v, 51 p.","numberOfPages":"56","costCenters":[],"links":[{"id":293826,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Massachusetts","otherGeospatial":"Connecticut River","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -72.6677,42.0241 ], [ -72.6677,42.7488 ], [ -71.177,42.7488 ], [ -71.177,42.0241 ], [ -72.6677,42.0241 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"54140b28e4b082fed288b974","contributors":{"authors":[{"text":"Veneman, Peter","contributorId":30559,"corporation":false,"usgs":true,"family":"Veneman","given":"Peter","email":"","affiliations":[],"preferred":false,"id":501044,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Tiner, Ralph W.","contributorId":8774,"corporation":false,"usgs":true,"family":"Tiner","given":"Ralph","email":"","middleInitial":"W.","affiliations":[],"preferred":false,"id":501043,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70242672,"text":"70242672 - 1990 - Site response across downtown Santa Cruz, California","interactions":[],"lastModifiedDate":"2023-04-12T12:19:40.635906","indexId":"70242672","displayToPublicDate":"1990-09-01T07:08:24","publicationYear":"1990","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1807,"text":"Geophysical Research Letters","active":true,"publicationSubtype":{"id":10}},"title":"Site response across downtown Santa Cruz, California","docAbstract":"

Some buildings in Santa Cruz, California, particularly those in the downtown section which is built on a flood plain, were severely damaged by the 17 October 1989 Loma Prieta Earthquake. During an aftershock study conducted in the fortnight following the mainshock, an array of seismographs was deployed across downtown to study the site response of the flood plain. Analyses of the records of eight aftershocks reveal that ground motions of the flood plain are amplified relative to those of crystalline rock sites by factors of 4–8 in the frequency band 2–8 Hz. Both resonance in the whole sedimentary column which overlies the crystalline basement and resonance/broad-band amplification in the low-velocity alluvium of the flood plain contribute to this site response.

","language":"English","publisher":"American Geophysical Union","doi":"10.1029/GL017i010p01793","usgsCitation":"Cranswick, E., King, K., Carver, D., Worley, D.M., Williams, R., Spudich, P.A., and Banfill, R., 1990, Site response across downtown Santa Cruz, California: Geophysical Research Letters, v. 17, no. 10, p. 1793-1796, https://doi.org/10.1029/GL017i010p01793.","productDescription":"4 p.","startPage":"1793","endPage":"1796","costCenters":[],"links":[{"id":415652,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"California","city":"Santa Cruz","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -122.09883583355847,\n 36.991448917195655\n ],\n [\n -122.09883583355847,\n 36.94645266728794\n ],\n [\n -121.87437835374348,\n 36.94645266728794\n ],\n [\n -121.87437835374348,\n 36.991448917195655\n ],\n [\n -122.09883583355847,\n 36.991448917195655\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","volume":"17","issue":"10","noUsgsAuthors":false,"publicationDate":"2012-12-07","publicationStatus":"PW","contributors":{"authors":[{"text":"Cranswick, Edward","contributorId":15611,"corporation":false,"usgs":true,"family":"Cranswick","given":"Edward","email":"","affiliations":[],"preferred":false,"id":869295,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"King, Kenneth","contributorId":49813,"corporation":false,"usgs":true,"family":"King","given":"Kenneth","affiliations":[],"preferred":false,"id":869296,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Carver, David","contributorId":55867,"corporation":false,"usgs":true,"family":"Carver","given":"David","affiliations":[],"preferred":false,"id":869297,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Worley, David M. worley@usgs.gov","contributorId":947,"corporation":false,"usgs":true,"family":"Worley","given":"David","email":"worley@usgs.gov","middleInitial":"M.","affiliations":[],"preferred":true,"id":869298,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Williams, Robert 0000-0002-2973-8493 rawilliams@usgs.gov","orcid":"https://orcid.org/0000-0002-2973-8493","contributorId":140741,"corporation":false,"usgs":true,"family":"Williams","given":"Robert","email":"rawilliams@usgs.gov","affiliations":[{"id":300,"text":"Geologic Hazards Science Center","active":true,"usgs":true}],"preferred":true,"id":869299,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Spudich, Paul A. 0000-0002-9484-4997 spudich@usgs.gov","orcid":"https://orcid.org/0000-0002-9484-4997","contributorId":2372,"corporation":false,"usgs":true,"family":"Spudich","given":"Paul","email":"spudich@usgs.gov","middleInitial":"A.","affiliations":[{"id":237,"text":"Earthquake Science Center","active":true,"usgs":true}],"preferred":true,"id":869300,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Banfill, Robert","contributorId":80737,"corporation":false,"usgs":true,"family":"Banfill","given":"Robert","email":"","affiliations":[],"preferred":false,"id":869301,"contributorType":{"id":1,"text":"Authors"},"rank":7}]}} ,{"id":1003527,"text":"1003527 - 1990 - Pharmacokinetic modeling in aquatic animals. 1. Models and concepts","interactions":[],"lastModifiedDate":"2023-03-03T19:14:19.741826","indexId":"1003527","displayToPublicDate":"1990-09-01T00:00:00","publicationYear":"1990","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":874,"text":"Aquatic Toxicology","active":true,"publicationSubtype":{"id":10}},"title":"Pharmacokinetic modeling in aquatic animals. 1. Models and concepts","docAbstract":"While clinical and toxicological applications of pharmacokinetics have continued to evolve both conceptually and experimentally, pharmacokinetics modeling in aquatic animals has not progressed accordingly. In this paper we present methods and concepts of pharmacokinetic modeling in aquatic animals using multicompartmental, clearance-based, non-compartmental and physiologically-based pharmacokinetic models. These models should be considered as alternatives to traditional approaches, which assume that the animal acts as a single homogeneous compartment based on apparent monoexponential elimination.","language":"English","publisher":"Elsevier","doi":"10.1016/0166-445X(90)90063-U","usgsCitation":"Barron, M.G., Stehly, G.R., and Hayton, W.L., 1990, Pharmacokinetic modeling in aquatic animals. 1. Models and concepts: Aquatic Toxicology, v. 17, no. 3, p. 187-212, https://doi.org/10.1016/0166-445X(90)90063-U.","productDescription":"26 p.","startPage":"187","endPage":"212","numberOfPages":"26","costCenters":[{"id":606,"text":"Upper Midwest Environmental Sciences Center","active":true,"usgs":true}],"links":[{"id":129530,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"17","issue":"3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4adfe4b07f02db68794b","contributors":{"authors":[{"text":"Barron, Mace G.","contributorId":150751,"corporation":false,"usgs":false,"family":"Barron","given":"Mace","email":"","middleInitial":"G.","affiliations":[{"id":18090,"text":"U.S. Environmental Protection Agency, Gulf Ecology Division, Gulf Breeze, FL","active":true,"usgs":false}],"preferred":false,"id":313453,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Stehly, Guy R.","contributorId":11553,"corporation":false,"usgs":true,"family":"Stehly","given":"Guy","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":313452,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Hayton, W. L.","contributorId":100325,"corporation":false,"usgs":true,"family":"Hayton","given":"W.","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":313454,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70016381,"text":"70016381 - 1990 - The Yucca Mountain project: Another perspective","interactions":[],"lastModifiedDate":"2023-10-27T11:00:34.711421","indexId":"70016381","displayToPublicDate":"1990-09-01T00:00:00","publicationYear":"1990","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":5925,"text":"Environmental Science and Technology","active":true,"publicationSubtype":{"id":10}},"title":"The Yucca Mountain project: Another perspective","docAbstract":"

No abstract available.

","language":"English","publisher":"American Chemical Society","doi":"10.1021/es00079a602","usgsCitation":"Winograd, I.J., 1990, The Yucca Mountain project: Another perspective: Environmental Science and Technology, v. 24, no. 9, p. 1291-1293, https://doi.org/10.1021/es00079a602.","productDescription":"3 p.","startPage":"1291","endPage":"1293","numberOfPages":"3","costCenters":[{"id":436,"text":"National Research Program - Eastern Branch","active":true,"usgs":true}],"links":[{"id":222850,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Nevada","otherGeospatial":"Yucca Mountain","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -116.48254394531249,\n 36.91352904330221\n ],\n [\n -116.43602371215822,\n 36.91352904330221\n ],\n [\n -116.43602371215822,\n 36.95757376878687\n ],\n [\n -116.48254394531249,\n 36.95757376878687\n ],\n [\n -116.48254394531249,\n 36.91352904330221\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"24","issue":"9","noUsgsAuthors":false,"publicationDate":"2003-07-29","publicationStatus":"PW","scienceBaseUri":"505ba992e4b08c986b32235d","contributors":{"authors":[{"text":"Winograd, Isaac J. ijwinogr@usgs.gov","contributorId":4643,"corporation":false,"usgs":true,"family":"Winograd","given":"Isaac","email":"ijwinogr@usgs.gov","middleInitial":"J.","affiliations":[{"id":436,"text":"National Research Program - Eastern Branch","active":true,"usgs":true}],"preferred":true,"id":373330,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70015943,"text":"70015943 - 1990 - Variations in suspended sediment and associated trace element concentrations in selected riverine cross sections","interactions":[],"lastModifiedDate":"2023-10-27T11:00:07.093009","indexId":"70015943","displayToPublicDate":"1990-09-01T00:00:00","publicationYear":"1990","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":5925,"text":"Environmental Science and Technology","active":true,"publicationSubtype":{"id":10}},"title":"Variations in suspended sediment and associated trace element concentrations in selected riverine cross sections","docAbstract":"Detailed sampling and subsequent analyses of riverine suspended sediment obtained from six rivers in the United States indicate substantial differences in suspended sediment concentrations and possibly in some associated trace elements, depending on whether depth- and width-integrated, point, or pumping samples are used. In addition, the data from time-series, depth-integrated sampling indicate that there can be substantial short-term (on the order of 20-30 min) spatial and/or temporal variations in suspended-sediment concentrations. Despite this, major element concentrations are remarkably stable both spatially and temporally. Trace element concentrations are generally stable; however, some spatial and temporal variations may occur.","language":"English","publisher":"American Chemical Society","doi":"10.1021/es00079a003","usgsCitation":"Horowitz, A.J., Rinella, F., Lamothe, P.J., Miller, T.L., Edwards, T.K., Roche, R.L., and Rickert, D.A., 1990, Variations in suspended sediment and associated trace element concentrations in selected riverine cross sections: Environmental Science and Technology, v. 24, no. 9, p. 1313-1320, https://doi.org/10.1021/es00079a003.","productDescription":"8 p.","startPage":"1313","endPage":"1320","numberOfPages":"8","costCenters":[{"id":316,"text":"Georgia Water Science Center","active":true,"usgs":true}],"links":[{"id":222824,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"24","issue":"9","noUsgsAuthors":false,"publicationDate":"2002-05-01","publicationStatus":"PW","scienceBaseUri":"505bc18be4b08c986b32a62d","contributors":{"authors":[{"text":"Horowitz, Arthur J. 0000-0002-3296-730X horowitz@usgs.gov","orcid":"https://orcid.org/0000-0002-3296-730X","contributorId":1400,"corporation":false,"usgs":true,"family":"Horowitz","given":"Arthur","email":"horowitz@usgs.gov","middleInitial":"J.","affiliations":[{"id":316,"text":"Georgia Water Science Center","active":true,"usgs":true},{"id":13634,"text":"South Atlantic Water Science Center","active":true,"usgs":true}],"preferred":true,"id":372145,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Rinella, Frank A.","contributorId":89515,"corporation":false,"usgs":true,"family":"Rinella","given":"Frank A.","affiliations":[],"preferred":false,"id":886960,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Lamothe, Paul J. plamothe@usgs.gov","contributorId":1298,"corporation":false,"usgs":true,"family":"Lamothe","given":"Paul","email":"plamothe@usgs.gov","middleInitial":"J.","affiliations":[],"preferred":true,"id":886961,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Miller, Timothy L.","contributorId":9263,"corporation":false,"usgs":true,"family":"Miller","given":"Timothy","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":886962,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Edwards, Thomas K. 0000-0002-0773-0909 tce@usgs.gov","orcid":"https://orcid.org/0000-0002-0773-0909","contributorId":104477,"corporation":false,"usgs":true,"family":"Edwards","given":"Thomas","email":"tce@usgs.gov","middleInitial":"K.","affiliations":[],"preferred":false,"id":886963,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Roche, Richard L.","contributorId":331214,"corporation":false,"usgs":true,"family":"Roche","given":"Richard","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":886964,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Rickert, David A.","contributorId":80247,"corporation":false,"usgs":true,"family":"Rickert","given":"David","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":886965,"contributorType":{"id":1,"text":"Authors"},"rank":7}]}} ,{"id":70185816,"text":"70185816 - 1990 - Use of tree-ring chemistry to document historical ground-water contamination events","interactions":[],"lastModifiedDate":"2017-03-29T11:43:38","indexId":"70185816","displayToPublicDate":"1990-09-01T00:00:00","publicationYear":"1990","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3825,"text":"Groundwater","active":true,"publicationSubtype":{"id":10}},"title":"Use of tree-ring chemistry to document historical ground-water contamination events","docAbstract":"

The annual growth rings of tulip trees (Liriodendron tulipifera L.) appear to preserve a chemical record of ground-water contamination at a landfill in Maryland. Zones of elevated iron and chlorine concentrations in growth rings from trees immediately downgradient from the landfill are closely correlated temporally with activities in the landfill expected to generate iron and chloride contamination in the ground water. Successively later iron peaks in trees increasingly distant from the landfill along the general direction of ground-water flow imply movement of iron-contaminated ground water away from the landfill. The historical velocity of iron movement (2 to 9 m/yr) and chloride movement (at least 40 m/yr) in ground water at the site was estimated from element-concentration trends of trees at successive distances from the landfill. The tree-ring-derived chloride-transport velocity approximates the known ground-water velocity (30 to 80 m/yr). A minimum horizontal hydraulic conductivity (0.01 to .02 cm/s) calculated from chloride velocity agrees well with values derived from aquifer tests (about 0.07 cm/s) and from ground-water modeling results (0.009 to 0.04 cm/s).

","language":"English","publisher":"Wiley","doi":"10.1111/j.1745-6584.1990.tb01983.x","usgsCitation":"Vroblesky, D.A., and Yanosky, T.M., 1990, Use of tree-ring chemistry to document historical ground-water contamination events: Groundwater, v. 28, no. 5, p. 677-684, https://doi.org/10.1111/j.1745-6584.1990.tb01983.x.","productDescription":"8 p.","startPage":"677","endPage":"684","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":338585,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"28","issue":"5","noUsgsAuthors":false,"publicationDate":"2005-08-04","publicationStatus":"PW","scienceBaseUri":"58dcc81fe4b02ff32c68573a","contributors":{"authors":[{"text":"Vroblesky, Don A. vroblesk@usgs.gov","contributorId":413,"corporation":false,"usgs":true,"family":"Vroblesky","given":"Don","email":"vroblesk@usgs.gov","middleInitial":"A.","affiliations":[],"preferred":true,"id":686841,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Yanosky, Thomas M.","contributorId":40589,"corporation":false,"usgs":true,"family":"Yanosky","given":"Thomas","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":686842,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70174001,"text":"70174001 - 1990 - Selenium and other elements in juvenile striped bass from the San Joaquin Valley and San Francisco Estuary, California","interactions":[],"lastModifiedDate":"2018-09-25T11:53:10","indexId":"70174001","displayToPublicDate":"1990-09-01T00:00:00","publicationYear":"1990","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":887,"text":"Archives of Environmental Contamination and Toxicology","active":true,"publicationSubtype":{"id":10}},"title":"Selenium and other elements in juvenile striped bass from the San Joaquin Valley and San Francisco Estuary, California","docAbstract":"

Concentrations of selenium and other trace elements were determined in 55 whole body samples of juvenile anadromous striped bass (Morone saxatilis) from the San Joaquin Valley and San Francisco Estuary, California. The fish (≤1 yr old—the predominant life stage in the San Joaquin Valley) were collected in September–December 1986 from 19 sites in the Valley and 3 sites in the Estuary, and analyzed for the following elements: aluminum (Al), arsenic (As), boron (B), barium (Ba), beryllium (Be), cadmium (Cd), chromium (Cr), copper (Cu), iron (Fe), mercury (Hg), magnesium (Mg), molybdenum (Mo), nickel (Ni), lead (Pb), selenium (Se), strontium (Sr), vanadium (V), and zinc (Zn). When compared to concentrations in whole freshwater fish measured by surveys from other waters, a few samples contained higher levels, of As, Cd, Cu, Pb, and Se. The median concentrations of Al, As, Cu, Fe, Mg, Se, and Sr also differed significantly (P⩽0.05) among sites. However, only Se concentrations were highest (up to 7.9 μg/g dry weight) in samples from Valley sites exposed to agricultural subsurface (tile) drainwater; concentrations were lower in samples collected elsewhere. Water quality variables—especially those strongly influenced by tile drainwater (conductivity, total dissolved solids, total alkalinity, and total hardness)—were also significantly correlated (P⩽0.05) with Se concentrations in fish. Selenium concentrations in striped bass from the Estuary were only one-fourth to one-half the concentrations measured in the most contaminated fish from the San Joaquin River.

","language":"English","publisher":"Springer-Verlag","doi":"10.1007/BF01183990","usgsCitation":"Saiki, M.K., and Palawski, D.U., 1990, Selenium and other elements in juvenile striped bass from the San Joaquin Valley and San Francisco Estuary, California: Archives of Environmental Contamination and Toxicology, v. 19, no. 5, p. 717-730, https://doi.org/10.1007/BF01183990.","productDescription":"14 p.","startPage":"717","endPage":"730","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":154,"text":"California Water Science Center","active":true,"usgs":true},{"id":192,"text":"Columbia Environmental Research Center","active":true,"usgs":true}],"links":[{"id":324179,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"California","otherGeospatial":"San Francisco Estuary, San Joaquin Valley","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -122.25036621093749,\n 38.16047628099622\n ],\n [\n -121.7120361328125,\n 38.302869955150044\n ],\n [\n -121.4373779296875,\n 38.31149091244452\n ],\n [\n -121.3604736328125,\n 37.90953361677018\n ],\n [\n -121.497802734375,\n 37.75334401310656\n ],\n [\n -122.178955078125,\n 37.97884504049713\n ],\n [\n -122.27783203125,\n 37.98750437106374\n ],\n [\n -122.29980468749999,\n 38.12159327165922\n ],\n [\n -122.25036621093749,\n 38.16047628099622\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"19","issue":"5","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"576a654ae4b07657d1a11e79","contributors":{"authors":[{"text":"Saiki, Michael K.","contributorId":54671,"corporation":false,"usgs":true,"family":"Saiki","given":"Michael","email":"","middleInitial":"K.","affiliations":[],"preferred":false,"id":640186,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Palawski, Donald U.","contributorId":17384,"corporation":false,"usgs":true,"family":"Palawski","given":"Donald","email":"","middleInitial":"U.","affiliations":[],"preferred":false,"id":640187,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70185521,"text":"70185521 - 1990 - Hazardous wastes from large-scale metal extraction. A case study","interactions":[],"lastModifiedDate":"2020-03-04T19:45:23","indexId":"70185521","displayToPublicDate":"1990-09-01T00:00:00","publicationYear":"1990","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1565,"text":"Environmental Science & Technology","onlineIssn":"1520-5851","printIssn":"0013-936X","active":true,"publicationSubtype":{"id":10}},"title":"Hazardous wastes from large-scale metal extraction. A case study","docAbstract":"

No abstract available

","language":"English","publisher":"American Chemical Society","doi":"10.1021/es00079a001","usgsCitation":"Moore, J.N., and Luoma, S.N., 1990, Hazardous wastes from large-scale metal extraction. A case study: Environmental Science & Technology, v. 24, no. 9, p. 1278-1285, https://doi.org/10.1021/es00079a001.","productDescription":"8 p. ","startPage":"1278","endPage":"1285","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":338157,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"24","issue":"9","noUsgsAuthors":false,"publicationDate":"2002-05-01","publicationStatus":"PW","scienceBaseUri":"58d4df07e4b05ec79911d1bc","contributors":{"authors":[{"text":"Moore, Johnnie N.","contributorId":102532,"corporation":false,"usgs":true,"family":"Moore","given":"Johnnie","email":"","middleInitial":"N.","affiliations":[],"preferred":false,"id":685858,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Luoma, Samuel N. 0000-0001-5443-5091 snluoma@usgs.gov","orcid":"https://orcid.org/0000-0001-5443-5091","contributorId":2287,"corporation":false,"usgs":true,"family":"Luoma","given":"Samuel","email":"snluoma@usgs.gov","middleInitial":"N.","affiliations":[{"id":438,"text":"National Research Program - Western Branch","active":true,"usgs":true}],"preferred":true,"id":685859,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70185524,"text":"70185524 - 1990 - Solute transport with multisegment, equilibrium-controlled reactions: A feed forward simulation method","interactions":[],"lastModifiedDate":"2018-02-27T11:28:58","indexId":"70185524","displayToPublicDate":"1990-09-01T00:00:00","publicationYear":"1990","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3722,"text":"Water Resources Research","onlineIssn":"1944-7973","printIssn":"0043-1397","active":true,"publicationSubtype":{"id":10}},"title":"Solute transport with multisegment, equilibrium-controlled reactions: A feed forward simulation method","docAbstract":"

The feed forward method (FF method) is one of the ways of formulating operational equations which simulate transport of solutes influenced by equilibrium-controlled reaction networks. The FF method provides increased solution efficiency by adapting its formulations to some of the network's fundamental features. In this study the FF method is further developed by adapting and testing it for a variety of network conditions. Classes of homogeneous, classical heterogeneous, and ion exchange network segments are studied. Networks may contain only a single class of segments or they may involve two or three segment classes. The FF method is found applicable to all the cases tested. In only one of these cases, for the more complex configurations of network segments, the FF method does not attain all of its objectives. A systematic, stepwise approach to method development is employed. It reveals, for certain subnetworks, an a priori inadmissibility, irrespective of the method used, and, for some other networks, an a priori irrelevance to transport dynamics. It also demonstrates that when certain subnetworks, belonging to different segment classes, form a single network, synergism (or antagonism) may occasionally arise and decrease (or increase) the difficulty of solving the transport problem.

","language":"English","publisher":"American Geophysical Union","doi":"10.1029/WR026i009p02029","usgsCitation":"Rubin, J., 1990, Solute transport with multisegment, equilibrium-controlled reactions: A feed forward simulation method: Water Resources Research, v. 26, no. 9, p. 2029-2055, https://doi.org/10.1029/WR026i009p02029.","productDescription":"27 p. ","startPage":"2029","endPage":"2055","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":338164,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"26","issue":"9","noUsgsAuthors":false,"publicationDate":"2010-07-09","publicationStatus":"PW","scienceBaseUri":"58d4df07e4b05ec79911d1ba","contributors":{"authors":[{"text":"Rubin, Jacob","contributorId":23918,"corporation":false,"usgs":true,"family":"Rubin","given":"Jacob","email":"","affiliations":[],"preferred":false,"id":685871,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":1003174,"text":"1003174 - 1990 - Factors influencing mercury concentrations in walleyes in northern Wisconsin lakes","interactions":[],"lastModifiedDate":"2026-04-07T15:13:10.942478","indexId":"1003174","displayToPublicDate":"1990-09-01T00:00:00","publicationYear":"1990","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3624,"text":"Transactions of the American Fisheries Society","active":true,"publicationSubtype":{"id":10}},"title":"Factors influencing mercury concentrations in walleyes in northern Wisconsin lakes","docAbstract":"

We examined relations between mercury concentrations in walleyes Stizostedion vitreum and the characteristics ofclear‐water Wisconsin lakes, which spanned a broad range of pH values (5.0–8.1) and acid‐neutralizing capacities (–9 to 1,017 μeq/L). Total concentrations of mercury in axial muscle tissue of walleyes (total length, 25–56 cm) varied from 0.12 to 1.74 μg/g wet weight. Concentrations were greatest in fish from the eight lakes with pH less than 7.0; concentrations in these fish equaled or exceeded 0.5 μg/g in 88% of the samples analyzed and 1.0 μg/g in 44%. In the five lakes with pH of 7.0 and above, concentrations exceeded 0.5 μg/g in only 1 of 21 walleyes. Multiple regression revealed that lake pH and total length offish accounted for 69% of the variation in mercury concentration in walleyes. Regression models with total length and either waterborne calcium or acid‐neutralizing capacity as independent variables accounted for 67% of the variation in concentration. The observed differences in fish mercury concentration between the low‐pH and high‐pH lakes could not be logically attributed to differences in growth rate or diet among the walleye populations. Moreover, it is improbable that mercury influxes to the low‐pH lakes were greater than those to the high‐pH lakes, because of the close proximity and spatial interspersion of low‐ and high‐pH lakes. We attributed the observed pH‐related trend in mercury concentration in walleyes to variation among lakes in within‐lake processes that affected the production and bioavailability of methylmercury.

","language":"English","publisher":"American Fisheries Society","doi":"10.1577/1548-8659(1990)119<0862:FIMCIW>2.3.CO;2","usgsCitation":"Wiener, J., Martini, R., Sheffy, T., and Glass, G., 1990, Factors influencing mercury concentrations in walleyes in northern Wisconsin lakes: Transactions of the American Fisheries Society, v. 119, no. 5, p. 862-870, https://doi.org/10.1577/1548-8659(1990)119<0862:FIMCIW>2.3.CO;2.","productDescription":"9 p.","startPage":"862","endPage":"870","costCenters":[{"id":606,"text":"Upper Midwest Environmental Sciences Center","active":true,"usgs":true}],"links":[{"id":502236,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Wisconsin","otherGeospatial":"northern Wisconsin","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -92.26820995411673,\n 46.86779190456383\n ],\n [\n -92.25785818045594,\n 46.202352284047336\n ],\n [\n -92.99207708885791,\n 45.699366996875455\n ],\n [\n -92.90114983661414,\n 44.729300518908715\n ],\n [\n -91.92494153825102,\n 44.101462109461124\n ],\n [\n -87.40557207594718,\n 44.0171337770426\n ],\n [\n -86.56726005808703,\n 45.29092432802179\n ],\n [\n -86.94129224505971,\n 45.54814632355047\n ],\n [\n -87.55407608530683,\n 45.231321095438716\n ],\n [\n -87.7330682924283,\n 45.876538402104025\n ],\n [\n -89.15632708966778,\n 46.15266795547139\n ],\n [\n -90.01047258456092,\n 46.39879471344413\n ],\n [\n -90.33373780523318,\n 46.65586034006465\n ],\n [\n -89.97903209603456,\n 47.32730180033931\n ],\n [\n -90.58869581787731,\n 47.345225548404926\n ],\n [\n -91.77959262639123,\n 46.90337770377511\n ],\n [\n -92.26820995411673,\n 46.86779190456383\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","volume":"119","issue":"5","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a01e4b07f02db5f7fde","contributors":{"authors":[{"text":"Wiener, J.G.","contributorId":44107,"corporation":false,"usgs":true,"family":"Wiener","given":"J.G.","email":"","affiliations":[],"preferred":false,"id":312868,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Martini, R.E.","contributorId":92779,"corporation":false,"usgs":true,"family":"Martini","given":"R.E.","email":"","affiliations":[],"preferred":false,"id":312870,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Sheffy, T.B.","contributorId":58373,"corporation":false,"usgs":true,"family":"Sheffy","given":"T.B.","email":"","affiliations":[],"preferred":false,"id":312869,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Glass, G.E.","contributorId":37853,"corporation":false,"usgs":true,"family":"Glass","given":"G.E.","email":"","affiliations":[],"preferred":false,"id":312867,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70015813,"text":"70015813 - 1990 - Climatic influences on species: Evidence from the fossil record","interactions":[],"lastModifiedDate":"2026-03-12T16:54:14.08935","indexId":"70015813","displayToPublicDate":"1990-09-01T00:00:00","publicationYear":"1990","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3653,"text":"Trends in Ecology and Evolution","active":true,"publicationSubtype":{"id":10}},"title":"Climatic influences on species: Evidence from the fossil record","docAbstract":"The detailed Neogene and Quaternary paleoclimatic reconstructions now available provide a means to test how species respond to environmental change. Paleontologic studies of marine organisms show that climatic change causes evolution (via cladogenesis and anagenesis), ecophenotypic variation, migration, morphologic stasis and extinction. Evolution during climatic change is a rare event relative to the number of climatic cycles that have occurred, but climate-related environmental barriers, usually temperature, may play an important role in the isolation of populations during allopatric speciation.","language":"English","publisher":"Elsevier","doi":"10.1016/0169-5347(90)90080-W","issn":"01695347","usgsCitation":"Cronin, T.M., and Schneider, C., 1990, Climatic influences on species: Evidence from the fossil record: Trends in Ecology and Evolution, v. 5, no. 9, p. 275-279, https://doi.org/10.1016/0169-5347(90)90080-W.","productDescription":"5 p.","startPage":"275","endPage":"279","costCenters":[],"links":[{"id":223332,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"5","issue":"9","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059f667e4b0c8380cd4c746","contributors":{"authors":[{"text":"Cronin, T. M. 0000-0002-2643-0979","orcid":"https://orcid.org/0000-0002-2643-0979","contributorId":42613,"corporation":false,"usgs":true,"family":"Cronin","given":"T.","email":"","middleInitial":"M.","affiliations":[{"id":40020,"text":"Florence Bascom Geoscience Center","active":true,"usgs":true}],"preferred":false,"id":371835,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Schneider, C.E.","contributorId":29577,"corporation":false,"usgs":true,"family":"Schneider","given":"C.E.","email":"","affiliations":[],"preferred":false,"id":371834,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70200538,"text":"70200538 - 1990 - Dark materials in Valles Marineris: Indications of the style of volcanism and magmatism on Mars","interactions":[],"lastModifiedDate":"2018-10-23T11:53:01","indexId":"70200538","displayToPublicDate":"1990-08-30T11:52:33","publicationYear":"1990","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2314,"text":"Journal of Geophysical Research B: Solid Earth","active":true,"publicationSubtype":{"id":10}},"title":"Dark materials in Valles Marineris: Indications of the style of volcanism and magmatism on Mars","docAbstract":"

Rifting on the equatorial canyon system of Valles Marineris provides a unique view of the interior of the Martian crust to depths reaching 7 km, exposing several in situ bedrock units which testify to past volcanic and magmatic processes on Mars. A thick, regionally extensive deposit observed in Coprates and Juventae chasmata is interpreted on the basis of spectral reflectance, erosional morphology, and tendency for eolian mobilization to be composed of mafic glass, possibly an ancient Martian analogue of the lunar terra mantling deposits. Spectral mapping suggests that the dark floor‐covering materials in the lower canyons are derived from this unit. A series of cliffs in the Ophir Chasma wall rock is interpreted to be exposures of resistant bedrock; the spectral signature of this massive and uniform unit most closely resembles that of terrestrial mafic rocks altered to or coated by crystalline hematite. Application of computer mapping techniques to probable young volcanic materials in the central troughs yields an inferred distribution of volcanic activity consistent with the interpretation of extrusion along faults near the margins of the canyon floors. This result supports the hypothesis that the valles originated through tectonic extension.

","language":"English","publisher":"American Geophysical Union","doi":"10.1029/JB095iB09p14399","usgsCitation":"Geissler, P.E., Singer, R.B., and Lucchitta, B.K., 1990, Dark materials in Valles Marineris: Indications of the style of volcanism and magmatism on Mars: Journal of Geophysical Research B: Solid Earth, v. 95, no. B9, p. 14.399-14.413, https://doi.org/10.1029/JB095iB09p14399.","productDescription":"15 p.","startPage":"14.399","endPage":"14.413","costCenters":[{"id":131,"text":"Astrogeology Science Center","active":true,"usgs":true}],"links":[{"id":358672,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"95","issue":"B9","noUsgsAuthors":false,"publicationDate":"2012-09-20","publicationStatus":"PW","scienceBaseUri":"5c1127e2e4b034bf6a81ff98","contributors":{"authors":[{"text":"Geissler, Paul E. pgeissler@usgs.gov","contributorId":2811,"corporation":false,"usgs":true,"family":"Geissler","given":"Paul","email":"pgeissler@usgs.gov","middleInitial":"E.","affiliations":[{"id":131,"text":"Astrogeology Science Center","active":true,"usgs":true}],"preferred":true,"id":749404,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Singer, Robert B.","contributorId":16166,"corporation":false,"usgs":true,"family":"Singer","given":"Robert","email":"","middleInitial":"B.","affiliations":[],"preferred":false,"id":749405,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Lucchitta, Baerbel K. blucchitta@usgs.gov","contributorId":3649,"corporation":false,"usgs":true,"family":"Lucchitta","given":"Baerbel","email":"blucchitta@usgs.gov","middleInitial":"K.","affiliations":[],"preferred":true,"id":749406,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70125361,"text":"70125361 - 1990 - The use of interactive videodisc in natural resources training","interactions":[],"lastModifiedDate":"2014-09-16T13:13:37","indexId":"70125361","displayToPublicDate":"1990-08-24T13:12:12","publicationYear":"1990","noYear":false,"publicationType":{"id":4,"text":"Book"},"publicationSubtype":{"id":12,"text":"Conference publication"},"title":"The use of interactive videodisc in natural resources training","docAbstract":"No abstract available.","largerWorkTitle":"Proceedings of the Twelfth Annual Conference","conferenceTitle":"Twelfth annual conference, Interactive Videodisc, in Education and Training","conferenceDate":"1990-08-22T00:00:00","conferenceLocation":"Washington, D.C.","language":"English","publisher":"Society for Applied Learning Technology","publisherLocation":"Warrenton, VA","usgsCitation":"Banowetz, M., Solomon, R., and Mangus, W., 1990, The use of interactive videodisc in natural resources training, 6 p.","productDescription":"6 p.","numberOfPages":"6","costCenters":[],"links":[{"id":293961,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5419515ce4b091c7ffc8e8a1","contributors":{"authors":[{"text":"Banowetz, M.M.","contributorId":61762,"corporation":false,"usgs":true,"family":"Banowetz","given":"M.M.","email":"","affiliations":[],"preferred":false,"id":501335,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Solomon, R.C.","contributorId":56093,"corporation":false,"usgs":true,"family":"Solomon","given":"R.C.","email":"","affiliations":[],"preferred":false,"id":501333,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Mangus, W.L.","contributorId":58580,"corporation":false,"usgs":true,"family":"Mangus","given":"W.L.","email":"","affiliations":[],"preferred":false,"id":501334,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70016112,"text":"70016112 - 1990 - Fire - Southern Oscillation relations in the southwestern United States","interactions":[],"lastModifiedDate":"2025-09-19T16:39:07.4155","indexId":"70016112","displayToPublicDate":"1990-08-13T00:00:00","publicationYear":"1990","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3338,"text":"Science","active":true,"publicationSubtype":{"id":10}},"title":"Fire - Southern Oscillation relations in the southwestern United States","docAbstract":"

Fire scar and tree growth chronologies (1700 to 1905) and fire statistics (since 1905) from Arizona and New Mexico show that small areas burn after wet springs associated with the low phase of the Southern Oscillation (SO), whereas large areas burn after dry springs associated with the high phase of the SO. Through its synergistic influence on spring weather and fuel conditions, climatic variability in the tropical Pacific significantly influences vegetation dynamics in the southwestern United States. Synchrony of fire-free and severe fire years across diverse southwestern forests implies that climate forces fire regimes on a subcontinental scale; it also underscores the importance of exogenous factors in ecosystem dynamics.

","language":"English","publisher":"American Association for the Advancement of Science","doi":"10.1126/science.249.4972.1017","issn":"00368075","usgsCitation":"Swetnam, T., and Betancourt, J.L., 1990, Fire - Southern Oscillation relations in the southwestern United States: Science, v. 249, no. 4972, p. 1017-1020, https://doi.org/10.1126/science.249.4972.1017.","productDescription":"4 p.","startPage":"1017","endPage":"1020","costCenters":[],"links":[{"id":223198,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Arizona, New Mexico","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -114.50622703661,\n 37.172270110964305\n ],\n [\n -114.50622703661,\n 31.322461937556398\n ],\n [\n -103.02703496894574,\n 31.322461937556398\n ],\n [\n -103.02703496894574,\n 37.172270110964305\n ],\n [\n -114.50622703661,\n 37.172270110964305\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","volume":"249","issue":"4972","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a1031e4b0c8380cd53b86","contributors":{"authors":[{"text":"Swetnam, T.W.","contributorId":95433,"corporation":false,"usgs":true,"family":"Swetnam","given":"T.W.","email":"","affiliations":[],"preferred":false,"id":372577,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Betancourt, Julio L. 0000-0002-7165-0743 jlbetanc@usgs.gov","orcid":"https://orcid.org/0000-0002-7165-0743","contributorId":3376,"corporation":false,"usgs":true,"family":"Betancourt","given":"Julio","email":"jlbetanc@usgs.gov","middleInitial":"L.","affiliations":[{"id":438,"text":"National Research Program - Western Branch","active":true,"usgs":true},{"id":436,"text":"National Research Program - Eastern Branch","active":true,"usgs":true},{"id":554,"text":"Science and Decisions Center","active":true,"usgs":true}],"preferred":true,"id":372576,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70123805,"text":"70123805 - 1990 - Sediment and aquatic habitat associations in river systems","interactions":[],"lastModifiedDate":"2014-09-09T11:14:44","indexId":"70123805","displayToPublicDate":"1990-08-03T11:13:37","publicationYear":"1990","noYear":false,"publicationType":{"id":4,"text":"Book"},"publicationSubtype":{"id":12,"text":"Conference publication"},"title":"Sediment and aquatic habitat associations in river systems","docAbstract":"No abstract available.","largerWorkTitle":"Proceedings of the 1990 National Conference: Results from the ASCE Task Committee on sediment transport and aquatic habitats","conferenceTitle":"Sediment and Aquatic Habitat Associations in River Systems","conferenceDate":"1990-07-30T00:00:00","conferenceLocation":"San Diego, CA","language":"English","publisher":"American Society of Civil Engineers","publisherLocation":"New York, NY","usgsCitation":"Milhous, R.T., MacArthur, R., Shields, F., and Adams, J., 1990, Sediment and aquatic habitat associations in river systems, 1 p.","productDescription":"1 p.","numberOfPages":"1","costCenters":[],"links":[{"id":293513,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5410147be4b07ab1cd980b0f","contributors":{"authors":[{"text":"Milhous, Robert T.","contributorId":28646,"corporation":false,"usgs":true,"family":"Milhous","given":"Robert","email":"","middleInitial":"T.","affiliations":[],"preferred":false,"id":500300,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"MacArthur, R.C.","contributorId":84670,"corporation":false,"usgs":true,"family":"MacArthur","given":"R.C.","email":"","affiliations":[],"preferred":false,"id":500302,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Shields, F.D. Jr.","contributorId":68184,"corporation":false,"usgs":true,"family":"Shields","given":"F.D.","suffix":"Jr.","email":"","affiliations":[],"preferred":false,"id":500301,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Adams, J.R.","contributorId":94876,"corporation":false,"usgs":true,"family":"Adams","given":"J.R.","email":"","affiliations":[],"preferred":false,"id":500303,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70124284,"text":"70124284 - 1990 - Questions on habitat preference","interactions":[],"lastModifiedDate":"2025-03-31T15:15:50.213553","indexId":"70124284","displayToPublicDate":"1990-08-03T10:32:38","publicationYear":"1990","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2886,"text":"North American Journal of Fisheries Management","active":true,"publicationSubtype":{"id":10}},"title":"Questions on habitat preference","docAbstract":"No abstract available.","language":"English","publisher":"American Fisheries Society","doi":"10.1577/1548-8675-10.3.362","usgsCitation":"Bartholow, J., Slauson, W., Parsons, B., and Hubert, W.A., 1990, Questions on habitat preference: North American Journal of Fisheries Management, v. 10, no. 3, p. 362-363, https://doi.org/10.1577/1548-8675-10.3.362.","productDescription":"2 p.","startPage":"362","endPage":"363","costCenters":[],"links":[{"id":293660,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"10","issue":"3","noUsgsAuthors":false,"publicationDate":"1990-08-01","publicationStatus":"PW","scienceBaseUri":"5412b99fe4b0239f1986ba21","contributors":{"authors":[{"text":"Bartholow, J.M.","contributorId":54530,"corporation":false,"usgs":true,"family":"Bartholow","given":"J.M.","email":"","affiliations":[],"preferred":false,"id":500648,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Slauson, W.","contributorId":99487,"corporation":false,"usgs":true,"family":"Slauson","given":"W.","email":"","affiliations":[],"preferred":false,"id":500649,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Parsons, Bradford G.M.","contributorId":352908,"corporation":false,"usgs":false,"family":"Parsons","given":"Bradford G.M.","affiliations":[{"id":6964,"text":"Minnesota Department of Natural Resources","active":true,"usgs":false}],"preferred":false,"id":932402,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Hubert, Wayne A.","contributorId":9325,"corporation":false,"usgs":true,"family":"Hubert","given":"Wayne","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":932403,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":1003421,"text":"1003421 - 1990 - Sterilizing effects of cobalt-60 and cesium-137 radiation on male sea lampreys","interactions":[],"lastModifiedDate":"2025-03-31T15:20:27.25612","indexId":"1003421","displayToPublicDate":"1990-08-03T00:00:00","publicationYear":"1990","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2886,"text":"North American Journal of Fisheries Management","active":true,"publicationSubtype":{"id":10}},"title":"Sterilizing effects of cobalt-60 and cesium-137 radiation on male sea lampreys","docAbstract":"

Male spawning-run sea lampreys Petromyzon marinus were exposed to various doses of cobalt-60 or cesium-137 radiation in an attempt to sterilize them for use in a program for controlling sea lampreys through the release of sterile males. Males captured and irradiated during the early part of the upstream migration were not effectively sterilized at the doses tested. After irradiation, the sea lampreys were more susceptible to fungal infections by Saprolegnia sp., and many died without attempting to spawn. Males captured and irradiated during the middle and late parts of the spawning migration were effectively sterilized at a dose of 2,000 rads. However, some radiation-induced mortality was observed in males captured and irradiated during the middle part of the spawning migration. Radiation is not as effective as the chemosterilant bisazir for sterilizing male sea lampreys.

","language":"English","publisher":"Wiley","doi":"10.1577/1548-8675(1990)010<0352:SEOCAC>2.3.CO;2","usgsCitation":"Hanson, L., 1990, Sterilizing effects of cobalt-60 and cesium-137 radiation on male sea lampreys: North American Journal of Fisheries Management, v. 10, no. 3, p. 352-361, https://doi.org/10.1577/1548-8675(1990)010<0352:SEOCAC>2.3.CO;2.","productDescription":"10 p.","startPage":"352","endPage":"361","costCenters":[{"id":606,"text":"Upper Midwest Environmental Sciences Center","active":true,"usgs":true}],"links":[{"id":131451,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"10","issue":"3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4b32e4b07f02db6b43ea","contributors":{"authors":[{"text":"Hanson, L.H.","contributorId":73535,"corporation":false,"usgs":true,"family":"Hanson","given":"L.H.","email":"","affiliations":[],"preferred":false,"id":313257,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70242604,"text":"70242604 - 1990 - Flume experiments on the alignment of transverse, oblique, and longitudinal dunes in directionally varying flows","interactions":[],"lastModifiedDate":"2023-04-10T21:29:02.427805","indexId":"70242604","displayToPublicDate":"1990-08-01T16:13:47","publicationYear":"1990","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3369,"text":"Sedimentology","active":true,"publicationSubtype":{"id":10}},"title":"Flume experiments on the alignment of transverse, oblique, and longitudinal dunes in directionally varying flows","docAbstract":"

For more than a century geologists have wondered why some bedforms are orientated roughly transverse to flow, whereas others are parallel or oblique to flow. This problem of bedform alignment was studied experimentally using subaqueous dunes on a 3–6-m-diameter sand-covered turntable on the floor of a 4-m-wide flume.

In each experiment, two flow directions (relative to the bed) were produced by alternating the turntable between two orientations. The turntable was held in each orientation for a short time relative to the reconstitution time of the bedforms; the resulting bedforms were in equilibrium with the time-averaged conditions of the bimodal flows. Dune alignment was studied for five divergence angles (the angle between the two flow directions): 45°, 67–5°, 90°, 112–5° and 135°. The flow depth during all experiments was approximately 30 cm; mean velocity was approximately 50 cm s-1 and mean grain diameter was 0–6 mm. Each experiment continued for 30–75 min, during which time the flume flow was steady and the turntable position changed every 2 min. At the end of each experiment, water was slowly drained from the flume and dune alignment was measured. Transverse dunes (defined relative to the resultant transport direction) were created when the divergence angle was 45° and 67–5°, and longitudinal dunes were created when the divergence angle was 135°. At intermediate divergence angles, dunes with both orientations were produced, but transverse dunes were dominant at 90°, and longitudinal dunes were dominant at 112–5°.

One experiment was conducted with a divergence angle of 135° and with unequal amounts of transport in the two flow directions. This was achieved by changing the orientation of the turntable at unequal time intervals, thereby causing the amount of transport to be unequal in the two directions. The dunes formed during this experiment were oblique to the resultant transport direction.

These experimental dunes follow the same rule of alignment as wind ripples studied in previous turntable experiments. In both sets of experiments, the bedforms developed with the orientation having the maximum gross bedform-normal transport (the orientation at which the sum of the bedform-normal components of the two transport vectors reaches its maximum value). In other words, the bedforms develop with an orientation that is as transverse as possible to the two flows. In those cases where the two flows diverge by more than 90° and transport equal amounts of sand, bedforms that are as transverse as possible to the two separate flows will be parallel to the resultant of the two flow vectors. Although such bedforms have been defined by previous work as longitudinal bedforms, they are intrinsically the same kind of bedform as transverse bedforms.

","language":"English","publisher":"Wiley","doi":"10.1111/j.1365-3091.1990.tb00628.x","usgsCitation":"Rubin, D.M., and Ikeda, H., 1990, Flume experiments on the alignment of transverse, oblique, and longitudinal dunes in directionally varying flows: Sedimentology, v. 37, no. 4, p. 673-684, https://doi.org/10.1111/j.1365-3091.1990.tb00628.x.","productDescription":"12 p.","startPage":"673","endPage":"684","costCenters":[],"links":[{"id":415548,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"37","issue":"4","noUsgsAuthors":false,"publicationDate":"2006-06-14","publicationStatus":"PW","contributors":{"authors":[{"text":"Rubin, David M. 0000-0003-1169-1452 drubin@usgs.gov","orcid":"https://orcid.org/0000-0003-1169-1452","contributorId":3159,"corporation":false,"usgs":true,"family":"Rubin","given":"David","email":"drubin@usgs.gov","middleInitial":"M.","affiliations":[{"id":520,"text":"Pacific Coastal and Marine Science Center","active":true,"usgs":true}],"preferred":true,"id":869086,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Ikeda, Hiroshi","contributorId":78350,"corporation":false,"usgs":false,"family":"Ikeda","given":"Hiroshi","email":"","affiliations":[],"preferred":false,"id":869087,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70169358,"text":"70169358 - 1990 - Human impacts on bear habitat use","interactions":[],"lastModifiedDate":"2023-08-25T14:57:11.065965","indexId":"70169358","displayToPublicDate":"1990-08-01T14:45:00","publicationYear":"1990","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":978,"text":"Bears: Their Biology and Management","active":true,"publicationSubtype":{"id":10}},"title":"Human impacts on bear habitat use","docAbstract":"

: Human effects on bear habitat use are mediated through food biomass changes, bear tolerance of humans and their impacts, and human tolerance of bears. Large-scale changes in bear food biomass have been caused by conversion of wildlands and waterways to intensive human use, and by the introduction of exotic pathogens. Bears consume virtually all human foods that have been established in former wildlands, but bear use has been limited by access. Air pollution has also affected bear food biomass on a small scale and is likely to have major future impacts on bear habitat through climatic warming. Major changes in disturbance cycles and landscape mosaics wrought by humans have further altered temporal and spatial pulses of bear food production. These changes have brought short-term benefits in places, but have also added long-term stresses to most bear populations. Although bears tend to avoid humans, they will also use exotic and native foods in close proximity to humans. Subadult males and adult females are more often impelled to forage closer to humans because of their energetic predicament and because more secure sites are often preempted by adult males. Although male bears are typically responsible for most livestock predation, adult females and subadult males are more likely to be habituated to humans because they tend to forage closer to humans. Elimination of human-habituated bears predictably reduces effective carrying capacity and is more likely to be a factor in preserving bear populations where humans are present in moderate-to-high densities. If humans desire to preserve viable bear populations, they will either have to accept increased risk of injury associated with preserving habituated animals, or continue to crop habituated bears while at the same time preserving large tracts of wildlands free from significant human intrusion.

","conferenceTitle":"Eighth International Conference on Bear Research and Management","conferenceDate":"February 1989","conferenceLocation":"Victoria, British Columbia, Canada","language":"English","publisher":"International Association of Bear Research and Management","publisherLocation":"Morges, Switzerland","doi":"10.2307/3872901","usgsCitation":"Mattson, D.J., 1990, Human impacts on bear habitat use: Bears: Their Biology and Management, v. 8, p. 33-56, https://doi.org/10.2307/3872901.","productDescription":"24 p.","startPage":"33","endPage":"56","numberOfPages":"24","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":481,"text":"Northern Rocky Mountain Science Center","active":true,"usgs":true}],"links":[{"id":319413,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"8","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"56f66173e4b07d796bf77087","contributors":{"authors":[{"text":"Mattson, David J. david_mattson@usgs.gov","contributorId":3662,"corporation":false,"usgs":true,"family":"Mattson","given":"David","email":"david_mattson@usgs.gov","middleInitial":"J.","affiliations":[{"id":568,"text":"Southwest Biological Science Center","active":true,"usgs":true}],"preferred":true,"id":623942,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70242141,"text":"70242141 - 1990 - The October 17, 1989, Loma Prieta, California, Earthquake and its aftershocks: Geometry of the sequence from high-resolution locations","interactions":[],"lastModifiedDate":"2023-04-07T17:26:37.715607","indexId":"70242141","displayToPublicDate":"1990-08-01T12:12:46","publicationYear":"1990","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1807,"text":"Geophysical Research Letters","active":true,"publicationSubtype":{"id":10}},"title":"The October 17, 1989, Loma Prieta, California, Earthquake and its aftershocks: Geometry of the sequence from high-resolution locations","docAbstract":"

Hypocenters of the Loma Prieta sequence form a dipping zone that rises from the mainshock hypocenter and is parallel to the mainshock nodal plane. Most aftershocks cluster around the perimeter of the zone, surrounding a relatively aseismic center which approximates the region of mainshock rupture. At its southeastern end, the dipping aftershock zone warps into a vertical surface that corresponds to the San Andreas fault. In the central and northwestern parts of the zone at depths above ∼10 km, the aftershocks define numerous disjoint fault structures. The large component of reverse-slip observed in this event agrees with a simple model for slip on a dipping plane within a compressional fault bend. We do not believe that the Loma Prieta earthquake occurred on the Sargent fault. However, we are unable to conclude whether it ruptured the principal plate boundary fault or a less frequently active fault.

","language":"English","publisher":"American Geophysical Union","doi":"10.1029/GL017i009p01417","usgsCitation":"Dietz, L.D., and Ellsworth, W.L., 1990, The October 17, 1989, Loma Prieta, California, Earthquake and its aftershocks: Geometry of the sequence from high-resolution locations: Geophysical Research Letters, v. 17, no. 9, p. 1417-1420, https://doi.org/10.1029/GL017i009p01417.","productDescription":"4 p.","startPage":"1417","endPage":"1420","costCenters":[],"links":[{"id":415428,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"California","otherGeospatial":"Loma Prieta, San Andreas Fault","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -121.96495413208875,\n 37.12642552193387\n ],\n [\n -121.96495413208875,\n 36.96957488229744\n ],\n [\n -121.72622540478163,\n 36.96957488229744\n ],\n [\n -121.72622540478163,\n 37.12642552193387\n ],\n [\n -121.96495413208875,\n 37.12642552193387\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","volume":"17","issue":"9","noUsgsAuthors":false,"publicationDate":"2012-12-07","publicationStatus":"PW","contributors":{"authors":[{"text":"Dietz, Lynn D.","contributorId":304039,"corporation":false,"usgs":false,"family":"Dietz","given":"Lynn","email":"","middleInitial":"D.","affiliations":[],"preferred":false,"id":868990,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Ellsworth, William L. ellsworth@usgs.gov","contributorId":787,"corporation":false,"usgs":true,"family":"Ellsworth","given":"William","email":"ellsworth@usgs.gov","middleInitial":"L.","affiliations":[{"id":237,"text":"Earthquake Science Center","active":true,"usgs":true}],"preferred":true,"id":868991,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70241945,"text":"70241945 - 1990 - Regional water quality","interactions":[],"lastModifiedDate":"2023-03-31T17:21:45.807854","indexId":"70241945","displayToPublicDate":"1990-08-01T12:08:57","publicationYear":"1990","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":5925,"text":"Environmental Science and Technology","active":true,"publicationSubtype":{"id":10}},"title":"Regional water quality","docAbstract":"

No abstract available.

","language":"English","publisher":"American Chemical Society","doi":"10.1021/es00078a604","usgsCitation":"Hren, J., Childress, C., Norris, J.M., Chaney, T.H., and Myers, D.N., 1990, Regional water quality: Environmental Science and Technology, v. 24, no. 8, p. 1122-1127, https://doi.org/10.1021/es00078a604.","productDescription":"6 p.","startPage":"1122","endPage":"1127","costCenters":[],"links":[{"id":415012,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Colorado, 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\"}}]}","volume":"24","issue":"8","noUsgsAuthors":false,"publicationDate":"2005-07-14","publicationStatus":"PW","contributors":{"authors":[{"text":"Hren, Janet","contributorId":69554,"corporation":false,"usgs":true,"family":"Hren","given":"Janet","email":"","affiliations":[],"preferred":false,"id":868331,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Childress, Carolyn J. Oblinger","contributorId":57514,"corporation":false,"usgs":true,"family":"Childress","given":"Carolyn J. Oblinger","affiliations":[],"preferred":false,"id":868332,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Norris, J. Michael 0000-0002-7480-0161 mnorris@usgs.gov","orcid":"https://orcid.org/0000-0002-7480-0161","contributorId":1625,"corporation":false,"usgs":true,"family":"Norris","given":"J.","email":"mnorris@usgs.gov","middleInitial":"Michael","affiliations":[{"id":466,"text":"New England Water Science Center","active":true,"usgs":true}],"preferred":true,"id":868333,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Chaney, Thomas H.","contributorId":94712,"corporation":false,"usgs":true,"family":"Chaney","given":"Thomas","email":"","middleInitial":"H.","affiliations":[],"preferred":false,"id":868334,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Myers, Donna N. 0000-0001-6359-2865 dnmyers@usgs.gov","orcid":"https://orcid.org/0000-0001-6359-2865","contributorId":512,"corporation":false,"usgs":true,"family":"Myers","given":"Donna","email":"dnmyers@usgs.gov","middleInitial":"N.","affiliations":[{"id":503,"text":"Office of Water Quality","active":true,"usgs":true}],"preferred":true,"id":868335,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}} ,{"id":70241943,"text":"70241943 - 1990 - Geochemistry and intrusive history of the Ashland pluton, Klamath Mountains, California and Oregon","interactions":[],"lastModifiedDate":"2023-03-31T16:59:42.458933","indexId":"70241943","displayToPublicDate":"1990-08-01T11:43:24","publicationYear":"1990","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2420,"text":"Journal of Petrology","active":true,"publicationSubtype":{"id":10}},"title":"Geochemistry and intrusive history of the Ashland pluton, Klamath Mountains, California and Oregon","docAbstract":"

The Ashland pluton is a calc-alkaline plutonic complex that intruded the western Paleozoic and Triassic belt of the Klamath Mountains in late Middle Jurassic time. The pluton comprises a series of compositionally distinct magma pulses. The oldest rocks are hornblende gabbro and two-pyroxene quartz gabbro with initial 87Sr/86Sr = 0˙7044, δ18O = 8˙7%, and REE patterns with chondrite normalized La/Lu = 7. These units were followed by a suite of tonalitic rocks (LaN/LuN = 7) and then by a suite of K2O- and P2O5 rocks of quartz monzodioritic affinity (LaN/LuN = 13–21; LaN/SmN = 2˙4–3˙) The quartz monzodioritic rocks were then intruded by biotite granodiorite and granite with lower REE abundances but more fractionated LREE(LaN/LuN = 13–19; LaN/SmN = 4˙3–6 and they, in turn, were host to dikes and bosses of hornblende diorite. The latest intrusive activity consisted of aplitic and granitic dikes. Combined phase equilibria and mineral composition data, indicate emplacement conditions of approximately Ptotal = 2˙3kb, PH2O between 1˙5 and 2˙2 kb, and fO2 between the nickel-nickel oxide and hematite-magnetite buffers.

Successive pulses of magma display increasing SiO2 together with increasing δ18O and decreasing initial 87Sr/86Sr. The isotopic data are consistent with either (1) combined fractional crystallization of andesitic magma and concurrent assimilation of crustal material characterized by low Sr1 and high (δ18O or, more probably, (2) a series of partial melting events in which sources were successively less radiogenic but richer in 18O Each intrusive stage displays evidence for some degree of crystal accumulation and/or fractional crystallization but neither process adequately accounts for their compositional differences. Consequently, each stage appears to represent a distinct partial melting or assimilation event.

The P2O5-rich nature of the quartz monzodiorite suite suggests accumulation of apatite. However, the suite contains abundant mafic microgranitoid enclaves and most apatite in the suite is acicular. These observations suggest that magma mixing affected the compositional variation of the quartz monzodiorite suite. Mass balance calculations are consistent with a simple mixing process in which P2O5-rich alkalic basalt magma (represented by the mafic microgranitoid enclaves) was combined with a crystal-poor felsic magma (represented by the tonalite suite), yielding a quartz monzodioritic magma that then underwent differentiation by crystal fractionation and accumulation.

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