Modern prospecting is the systematic search for specified and generally ill-exposed components of the Earth's crust known as ore. This prospecting depends entirely on reliable, or scientific knowledge for guidance and for recognition of the search objects. Improvement in prospecting results from additions and refinements to scientific knowledge. Scientific knowledge is an ordered distillation of observations too numerous and too complex in themselves for easy understanding and for effective management. The ordering of these observations is accomplished by an evolutionary hierarchy of abstractions. These abstractions employ simplified descriptions consisting of characterization by selected properties, sampling to represent much larger parts of a phenomenon, generalized mappings of patterns of geometrical and numerical relations among properties, and explanation (theory) of these patterns as functional relations among the selected properties. Each abstraction is predicated on the mode of abstraction anticipated for the next higher level, so that research is a deductive process in which the highest level, theory, is indispensable for the growth and refinement of scientific knowledge, and therefore of prospecting methodology.
","language":"English","publisher":"Springer-Verlag","doi":"10.1007/BF00204257","issn":"00264598","usgsCitation":"Neuerburg, G.J., 1985, Scientific knowledge and modern prospecting: Mineralium Deposita, v. 20, no. 1, p. 30-32, https://doi.org/10.1007/BF00204257.","productDescription":"3 p.","startPage":"30","endPage":"32","numberOfPages":"3","costCenters":[],"links":[{"id":219923,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"20","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505b8786e4b08c986b316522","contributors":{"authors":[{"text":"Neuerburg, G. J.","contributorId":29395,"corporation":false,"usgs":true,"family":"Neuerburg","given":"G.","middleInitial":"J.","affiliations":[],"preferred":false,"id":366288,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70013329,"text":"70013329 - 1985 - APPLICATION OF THE AERIAL PROFILING OF TERRAIN SYSTEM.","interactions":[],"lastModifiedDate":"2012-03-12T17:18:30","indexId":"70013329","displayToPublicDate":"1985-01-01T00:00:00","publicationYear":"1985","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"APPLICATION OF THE AERIAL PROFILING OF TERRAIN SYSTEM.","docAbstract":"The U. S. Geological Survey has completed the performance evaluation flight tests of the Aerial Profiling of Terrain System (APTS) and is now performing a series of application tests to determine its effectiveness and efficiency as an earth-science data collection tool. These tests are designed to evaluate the APTS at such tasks as positioning water wells, testing reliability of older maps, measuring elevations of kettle ponds, and profiling stream valleys for flood studies. The results of three application tests in Massachusetts are discussed: positioning water wells and measuring elevations along the Charles River; testing four older 1:24,000-scale quadrangle maps in the Plymouth area; and measuring elevations of several hundred kettle ponds near the Cape Cod Canal.","largerWorkTitle":"Technical Papers of the American Congress of Surveying and Mapping","conferenceTitle":"Technical Papers, 45th Annual Meeting - ACSM: Theodolite to Satellite. Papers presented at the 1985 ASP-ACSM Convention (American Society of Photogrammetry).","conferenceLocation":"Washington, DC, USA","language":"English","publisher":"American Congress on Surveying & Mapping","publisherLocation":"Falls Church, VA, USA","issn":"07483244","usgsCitation":"Cyran, E.J., 1985, APPLICATION OF THE AERIAL PROFILING OF TERRAIN SYSTEM., in Technical Papers of the American Congress of Surveying and Mapping, Washington, DC, USA.","startPage":"498","costCenters":[],"links":[{"id":220641,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059e631e4b0c8380cd47229","contributors":{"authors":[{"text":"Cyran, Edward J.","contributorId":75156,"corporation":false,"usgs":true,"family":"Cyran","given":"Edward","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":365823,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70013328,"text":"70013328 - 1985 - Role of submarine canyons in shaping the rise between Lydonia and Oceanographer canyons, Georges Bank","interactions":[],"lastModifiedDate":"2024-10-18T16:01:07.326768","indexId":"70013328","displayToPublicDate":"1985-01-01T00:00:00","publicationYear":"1985","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2667,"text":"Marine Geology","active":true,"publicationSubtype":{"id":10}},"title":"Role of submarine canyons in shaping the rise between Lydonia and Oceanographer canyons, Georges Bank","docAbstract":"Three large submarine canyons, Oceanographer, Gilbert, and Lydonia, indent the U.S. Atlantic continental shelf and, with four additional canyons, dissect the continental slope in the vicinity of Georges Bank. On the upper rise, these canyons merge at a water depth of approximately 3100 m to form only two valleys. Differences in channel morphology of the canyons on the upper rise imply differences in relative activity, which is inconsistent with observations in the canyon heads. At present, Lydonia Canyon incises the upper rise more deeply than do the other canyons: however, seismic-reflection profiles show buried channels beneath the rise, which suggests that these other six canyons were periodically active during the Neogene. The rise morphology and the thickness of inferred Neogene- and Quaternary-age sediments on the rise are attributed to the presence and activity of the canyons. The erosional and depositional processes and the morphology of these canyons are remarkably similar to those of fluvial systems. Bear Seamount, which has approximately 2000 m of relief on the rise, has acted as a barrier to downslope sediment transport since the Late Cretaceous. Sediment has piled up on the upslope side, whereas much less sediment has accumulated in the \"lee shadow\" on the downslope side. Seismic-reflection profile data show that Lydonia Canyon has not eroded down to the volcanic rock of Bear Seamount.
","language":"English","publisher":"Elsevier","doi":"10.1016/0025-3227(85)90120-3","usgsCitation":"McGregor, B.A., 1985, Role of submarine canyons in shaping the rise between Lydonia and Oceanographer canyons, Georges Bank: Marine Geology, v. 62, no. 3-4, p. 277-293, https://doi.org/10.1016/0025-3227(85)90120-3.","productDescription":"17 p.","startPage":"277","endPage":"293","costCenters":[],"links":[{"id":220640,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","otherGeospatial":"Georges Bank","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -70.62482914122968,\n 43.136200089564\n ],\n [\n -70.62482914122968,\n 42.13812260025668\n ],\n [\n -69.31201408737063,\n 42.13812260025668\n ],\n [\n -69.31201408737063,\n 43.136200089564\n ],\n [\n -70.62482914122968,\n 43.136200089564\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","volume":"62","issue":"3-4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505aae6fe4b0c8380cd870cf","contributors":{"authors":[{"text":"McGregor, Bonnie A.","contributorId":61022,"corporation":false,"usgs":true,"family":"McGregor","given":"Bonnie","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":365822,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70013327,"text":"70013327 - 1985 - URBAN STORMWATER INVESTIGATIONS BY THE U. S. GEOLOGICAL SURVEY.","interactions":[],"lastModifiedDate":"2012-03-12T17:18:29","indexId":"70013327","displayToPublicDate":"1985-01-01T00:00:00","publicationYear":"1985","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"URBAN STORMWATER INVESTIGATIONS BY THE U. S. GEOLOGICAL SURVEY.","docAbstract":"Urban stormwater hydrology studies in the U. S. Geological Survey are currently focused on compilation of national data bases containing flood-peak and short time-interval rainfall, discharge and water-quality information for urban watersheds. Current data bases, updated annually, are nationwide in scope. Supplementing the national data files are published reports of interpretative analyses, a map report and research products including improved instrumentation and deterministic modeling capabilities. New directions of Survey investigations include gaging programs for very small catchments and for stormwater detention facilities.","conferenceTitle":"Hydraulics and Hydrology in the Small Computer Age, Proceedings of the Specialty Conference.","conferenceLocation":"Lake Buena Vista, FL, USA","language":"English","publisher":"ASCE","publisherLocation":"New York, NY, USA","isbn":"0872624749","usgsCitation":"Jennings, M.E., 1985, URBAN STORMWATER INVESTIGATIONS BY THE U. S. GEOLOGICAL SURVEY., Hydraulics and Hydrology in the Small Computer Age, Proceedings of the Specialty Conference., Lake Buena Vista, FL, USA, p. 539-543.","startPage":"539","endPage":"543","numberOfPages":"5","costCenters":[],"links":[{"id":220639,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505bbb42e4b08c986b3285d5","contributors":{"authors":[{"text":"Jennings, Marshall E.","contributorId":55813,"corporation":false,"usgs":true,"family":"Jennings","given":"Marshall","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":365821,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70013326,"text":"70013326 - 1985 - Petrology and tectonic significance of augen gneiss from a belt of Mississippian granitoids in the Yukon-Tanana terrane, east- central Alaska","interactions":[],"lastModifiedDate":"2019-12-17T15:51:45","indexId":"70013326","displayToPublicDate":"1985-01-01T00:00:00","publicationYear":"1985","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1786,"text":"Geological Society of America Bulletin","active":true,"publicationSubtype":{"id":10}},"title":"Petrology and tectonic significance of augen gneiss from a belt of Mississippian granitoids in the Yukon-Tanana terrane, east- central Alaska","docAbstract":"An approximately E-W-trending belt of porphyritic peraluminous granitic rocks, metamorphosed and deformed to augen gneiss, is exposed for 400 km across the Yukon-Tanana terrain. Chemical, textural, and isotopic data from large augen-gneiss bodies indicate that these bodies originated as early Mississippian granitic rocks that assimilated, or were anatectically derived from, early Proterozoic crust or metasedimentary rocks. This plutonic belt probably formed in a middle Palaeozoic continental magmatic arc that developed near the edge of a Precambrian craton somewhere along the western margin of North America and was later translated NW to its present location. U/Pb zircon data and concordance of augen-gneiss contacts with metamorphic layering and with probable late-stage sills suggest that regional metamorphism to amphibolite facies of these rocks was synchronous (late kinematic) with intrusion of the porphyritic granitic protolith. -L.di H.","language":"English","publisher":"Geological Society of America","doi":"10.1130/0016-7606(1985)96<411:PATSOA>2.0.CO;2","usgsCitation":"Dusel-Bacon, C., and Aleinikoff, J.N., 1985, Petrology and tectonic significance of augen gneiss from a belt of Mississippian granitoids in the Yukon-Tanana terrane, east- central Alaska: Geological Society of America Bulletin, v. 96, no. 4, p. 411-425, https://doi.org/10.1130/0016-7606(1985)96<411:PATSOA>2.0.CO;2.","productDescription":"15 p.","startPage":"411","endPage":"425","numberOfPages":"15","costCenters":[{"id":312,"text":"Geology, Minerals, Energy, and Geophysics Science Center","active":true,"usgs":true}],"links":[{"id":220638,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Alaska","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -153.10546875,\n 61.14323525084058\n ],\n [\n -140.9765625,\n 61.14323525084058\n ],\n [\n -140.9765625,\n 66.47820814385636\n ],\n [\n -153.10546875,\n 66.47820814385636\n ],\n [\n -153.10546875,\n 61.14323525084058\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"96","issue":"4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a782be4b0c8380cd78658","contributors":{"authors":[{"text":"Dusel-Bacon, Cynthia 0000-0001-8481-739X cdusel@usgs.gov","orcid":"https://orcid.org/0000-0001-8481-739X","contributorId":2797,"corporation":false,"usgs":true,"family":"Dusel-Bacon","given":"Cynthia","email":"cdusel@usgs.gov","affiliations":[{"id":312,"text":"Geology, Minerals, Energy, and Geophysics Science Center","active":true,"usgs":true}],"preferred":true,"id":777788,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Aleinikoff, John N. 0000-0003-3494-6841 jaleinikoff@usgs.gov","orcid":"https://orcid.org/0000-0003-3494-6841","contributorId":1478,"corporation":false,"usgs":true,"family":"Aleinikoff","given":"John","email":"jaleinikoff@usgs.gov","middleInitial":"N.","affiliations":[{"id":171,"text":"Central Mineral and Environmental Resources Science Center","active":true,"usgs":true}],"preferred":true,"id":777789,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70013325,"text":"70013325 - 1985 - MONITORING THE EARTH - TOO MANY PLAYERS?","interactions":[],"lastModifiedDate":"2012-03-12T17:18:31","indexId":"70013325","displayToPublicDate":"1985-01-01T00:00:00","publicationYear":"1985","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"MONITORING THE EARTH - TOO MANY PLAYERS?","docAbstract":"Remote sensing from satellites provides a unique tool to measure the parameters of the Earth on a worldwide scale. A number of organizations are currently engaged in, or proposing to embark on, worldwide measurement/monitoring programs. Program objectives vary in type and complexity, including a form of technical library and an ambitious experiment to validate algorithms to derive land surface climatological parameters. Modeling and understanding the Earth as an integrated system is an immense undertaking and will require at least as many measurements as currently acquired. Development of a long-term program of Earth system monitoring/modeling, such as the International Global Change Program proposed by the International Council of Scientific Unions, could provide the necessary focus and structure for effective international coordination and cooperation.","largerWorkTitle":"Technical Papers of the American Society of Photogrammetry, Annual Meeting","conferenceTitle":"Technical Papers, 51st Annual Meeting, 1985 ASP-ACSM Convention: Theodolite to Satellite.","conferenceLocation":"Washington, DC, USA","language":"English","publisher":"American Soc of Photogrammetry","publisherLocation":"Falls Church, VA, USA","isbn":"0937294640","usgsCitation":"Thorley, G.A., 1985, MONITORING THE EARTH - TOO MANY PLAYERS?, in Technical Papers of the American Society of Photogrammetry, Annual Meeting, v. 2, Washington, DC, USA.","startPage":"766","costCenters":[],"links":[{"id":220582,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a4aeae4b0c8380cd6914a","contributors":{"authors":[{"text":"Thorley, Gene A.","contributorId":55957,"corporation":false,"usgs":true,"family":"Thorley","given":"Gene","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":365818,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70013612,"text":"70013612 - 1985 - Adsorption and desorption of hexavalent chromium in an alluvial aquifer near Telluride, Colorado","interactions":[],"lastModifiedDate":"2020-01-19T11:06:20","indexId":"70013612","displayToPublicDate":"1985-01-01T00:00:00","publicationYear":"1985","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2262,"text":"Journal of Environmental Quality","active":true,"publicationSubtype":{"id":10}},"title":"Adsorption and desorption of hexavalent chromium in an alluvial aquifer near Telluride, Colorado","docAbstract":"A laboratory investigation of reactions between hexavalent chromium [Cr(VI)] and alluvium was conducted to evaluate reactions of Cr(VI) contaminating an alluvial aquifer near Telluride, CO and to determine the mechanisms responsible for these reactions. Uncontaminated alluvium and groundwater (spiked with CrO42−) from the study site were used in batch and column experiments. Results of these experiments show that Cr(VI) was adsorbed by the alluvium. Distribution coefficients from batch experiments ranged from 52 L/kg at an equilibrium CrO42− concentration of 0.4 µmol/L to 1.7 L/kg at an equilibrium concentration of 1400 µmol/L. The zero point of charge for the alluvium was approximately 8.3, and the alluvium had a positive net charge at the groundwater pH of 6.8. Visual and chemical evidence indicated that Fe oxide and hydroxide coatings on the alluvial particles principally were responsible for the adsorption of Cr(VI). During column experiments, Cr(VI) initially was desorbed easily from the alluvium by Cr‐free groundwater; however, the rate of desorption decreased rapidly, and > 60 pore volumes of groundwater were required to decrease the effluent concentration of Cr(VI) to 3 µmol/L [drinking water standard for Cr(VI) = 1 µmol/L]. The quantity of Cr(VI) adsorbed varied with the type and concentration of other anions in solution.
Seven Bonneterre and Davis Formation glauconite samples from the Magmont mine area, Viburnum Trend, southeast Missouri, yield a 359 + or - 22-m.y. Rb-Sr isochron with an initial 87 Sr/ 86 Sr ratio of 0.7234 + or - 0.0273 (2 sigma). Gangue calcite from the ore zone has an 87 Sr/ 86 Sr ratio of approximately 0.7112. The isochron age for the Magmont glauconite samples is about 30 percent younger than the age of their Cambrian host rocks.The Rb/Sr ratios for Magmont glauconite samples are typical of many early Paleozoic glauconites but distinctly lower than ratios for glauconites from unmineralized localities in basinal Bonneterre facies, some distance from the Vibrunum Trend. Because the Rb-Sr data from Magmont glauconite samples define an isochron, it appears that the glauconites behaved as a cogenetic suite which was isotopically homogenized 359 m.y. ago. It is very unlikely that episodic or incomplete loss or exchange of radiogenic strontium, or the addition of rubidium, would result in the formation of an isochron. Addition of common strontium (mixing) will lower and produce a greater spread in Rb/Sr ratios but will not significantly change the calculated Rb-Sr isochron age for the glauconites. Because the total thickness of stratigraphic cover in the southeast Missouri region has never exceeded a kilometer, it is unlikely that the anomalously young glauconite isochron age resulted from heating associated with deep burial. Mississippi Valley-type ore fluids offer a hot, chemically reactive medium which could promote isotopic homogenization in glauconites. Therefore, the 359-m.y. age probably reflects a real geologic event, most likely the time of ore formation in southeast Missouri. A review of other attempts at dating early Paleozoic glauconites from the midcontinental United States indicates that all Rb-Sr and K-Ar glauconite ages are 10 to greater than 30 percent younger than their known stratigraphic ages. These glauconites are from Paleozoic formations on the stable craton, and again, resetting due to burial metamorphism is unlikely. Because there was no immediately obvious explanation for the discordant young ages, early Paleozoic glauconites were simply considered to be unsuitable geochronometers. It is suggested that the anomalously young radiometric ages for early Paleozoic glauconites record disturbances in the Rb-Sr and K-Ar isotopic systems, the result of Mississippi Valley-type fluid migration in the midcontinent region.
","language":"English","publisher":"Society of Economic Geologists","doi":"10.2113/gsecongeo.80.3.739","issn":"03610128","usgsCitation":"Stein, H.J., and Kish, S., 1985, The timing of ore formation in southeast Missouri: Rb-Sr glauconite dating at the Magmont mine, Viburnum trend: Economic Geology, v. 80, no. 3, p. 739-753, https://doi.org/10.2113/gsecongeo.80.3.739.","productDescription":"15 p.","startPage":"739","endPage":"753","numberOfPages":"15","costCenters":[],"links":[{"id":220124,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"80","issue":"3","noUsgsAuthors":false,"publicationDate":"1985-05-01","publicationStatus":"PW","scienceBaseUri":"505bb102e4b08c986b3251bc","contributors":{"authors":[{"text":"Stein, H. J.","contributorId":98748,"corporation":false,"usgs":true,"family":"Stein","given":"H.","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":365337,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Kish, S.A.","contributorId":21685,"corporation":false,"usgs":true,"family":"Kish","given":"S.A.","email":"","affiliations":[],"preferred":false,"id":365336,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70013021,"text":"70013021 - 1985 - Increased benthic grazing: An alternative explanation for low phytoplankton biomass in northern San Francisco Bay during the 1976-1977 drought","interactions":[],"lastModifiedDate":"2023-10-12T15:45:41.819469","indexId":"70013021","displayToPublicDate":"1985-01-01T00:00:00","publicationYear":"1985","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1587,"text":"Estuarine, Coastal and Shelf Science","active":true,"publicationSubtype":{"id":10}},"title":"Increased benthic grazing: An alternative explanation for low phytoplankton biomass in northern San Francisco Bay during the 1976-1977 drought","docAbstract":"Among the consequences of extremely low river flow into northern San Francisco Bay during a two-year drought were (1) a gradual increase in salinity, (2) an unusual decline in chlorophyll a concentration, and (3) the upstream migration of estuarine benthic invertebrates to the normally brackish area of the bay. Total abundance in the benthos at a shallow monitoring site increased from a normal 2000 to greater than 20 000 individuals m−2 during the summer of 1977, presumably in response to the increased salinity. Estimated filtration rates derived from equations in the literature for one of the species, the suspended-feeding bivalve Mya arenaria ranged from 1 to 4 m3 m−2 day−1 during 1977 depending on abundance and mean size on sampling dates. Because water depth at this site is less than 2 m, Mya could have filtered all of the particles (including diatoms) from the water column on the order of once per day. Several other immigrant species undoubtedly contributed to the removal of particles from the near-bottom water as well. Increased benthic grazing, therefore, could have accounted for the anomalously low phytoplankton biomass observed during the drought. These results suggest that during periods of prolonged low river flow and increased salinity benthic food webs could become more important than planktonic food webs in the upper part of the estuary.
","language":"English","publisher":"Elsevier","doi":"10.1016/0272-7714(85)90018-6","issn":"02727714","usgsCitation":"Nichols, F., 1985, Increased benthic grazing: An alternative explanation for low phytoplankton biomass in northern San Francisco Bay during the 1976-1977 drought: Estuarine, Coastal and Shelf Science, v. 21, no. 3, p. 379-388, https://doi.org/10.1016/0272-7714(85)90018-6.","productDescription":"10 p.","startPage":"379","endPage":"388","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":552,"text":"San Francisco Bay-Delta","active":false,"usgs":true},{"id":5079,"text":"Pacific Regional Director's Office","active":true,"usgs":true}],"links":[{"id":219829,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"California","otherGeospatial":"San Francisco Bay","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -122.53900208315437,\n 37.868856828024406\n ],\n [\n -122.42936805203873,\n 37.782258949446316\n ],\n [\n -122.40290466521779,\n 37.731447444156544\n ],\n [\n -122.41424611671275,\n 37.58479559067945\n ],\n [\n -122.3008316017656,\n 37.545839351546746\n ],\n [\n -122.2327828927973,\n 37.47686688256759\n ],\n [\n -122.14961224850258,\n 37.46486516533952\n ],\n [\n -122.11936837785015,\n 37.42584627770934\n ],\n [\n -121.99839289524002,\n 37.38079920329733\n ],\n [\n -121.92278321860876,\n 37.41383637259197\n ],\n [\n -121.92278321860876,\n 37.458863584117566\n ],\n [\n -122.0361977335559,\n 37.52485447798044\n ],\n [\n -122.0815635395343,\n 37.602768521483696\n ],\n [\n -122.1344903131766,\n 37.61474806365901\n ],\n [\n -122.14583176467109,\n 37.680601048251674\n ],\n [\n -122.19497805448144,\n 37.75536308797821\n ],\n [\n -122.2970511179341,\n 37.80018408861855\n ],\n [\n -122.27058773111318,\n 37.83602131947953\n ],\n [\n -122.30839256942859,\n 37.93746562322792\n ],\n [\n -122.3688803107339,\n 37.949391057353935\n ],\n [\n -122.32351450475502,\n 37.97025590985791\n ],\n [\n -122.21009998980787,\n 38.032814893300326\n ],\n [\n -122.24790482812375,\n 38.14290795819022\n ],\n [\n -122.27058773111318,\n 38.20234866837163\n ],\n [\n -122.27058773111318,\n 38.288451559881\n ],\n [\n -122.33863644008102,\n 38.24689738024401\n ],\n [\n -122.45205095502816,\n 38.14290795819022\n ],\n [\n -122.52388014782794,\n 38.136961221116565\n ],\n [\n -122.52388014782794,\n 37.98515574642889\n ],\n [\n -122.53900208315437,\n 37.868856828024406\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","volume":"21","issue":"3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a39f6e4b0c8380cd61ad4","contributors":{"authors":[{"text":"Nichols, F.H.","contributorId":88020,"corporation":false,"usgs":true,"family":"Nichols","given":"F.H.","affiliations":[],"preferred":false,"id":365096,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70013022,"text":"70013022 - 1985 - Isotopic studies of the late Archean plutonic rocks of the Wind River Range, Wyoming","interactions":[],"lastModifiedDate":"2023-12-28T21:49:47.633743","indexId":"70013022","displayToPublicDate":"1985-01-01T00:00:00","publicationYear":"1985","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1786,"text":"Geological Society of America Bulletin","active":true,"publicationSubtype":{"id":10}},"title":"Isotopic studies of the late Archean plutonic rocks of the Wind River Range, Wyoming","docAbstract":"Isotopic studies of the Rb-Sr and U-Th-Pb systems in whole-rock samples and the U-Pb systematics for zircons document the existence of two late Arehean intrusive events in the Wind River Range. All of the systems examined indicate an age of ∼2,630 ± 20 m.y. for the Louis Lake batholith. Apparent ages for the Bears Ears pluton range from 2,504 ± 40 m.y. to 2,575 ± 50 m.y. The scatter in apparent ages for the Bears Ears pluton does not appear to be primarily the result of disturbance by postintrusive events, but it may be explained by an isotopically inhomogenous magma at the time of intrusion.
Data for a few samples indicate that the Wind River Range was affected locally by a postmagmatic hydrothermal event that was approximately Tertiary in age. This event lowered δ18O values and disturbed parent-daughter relationships in most of the isotopic systems investigated, but it was recent enough that there is no demonstrable effect in the Pb-Pb system.
The Bears Ears pluton has some chemical and petrologic features that are similar to those reported for the granites in the Granite Mountains to the east. These granites are spatially associated with low-temperature uranium deposits of Tertiary age and have been shown to have lost large amounts of uranium during the early to middle Tertiary. U-Pb systematics indicate, however, that the low to moderate uranium contents and highly variable Th/U values noted for the Bears Ears pluton are best interpreted as being primary features. If uranium was lost after magma generation, the loss most likely occurred at the time of intrusion. Such a loss could account for uraniferous Precambrian pegmatites southwest of the main part of the Range.
The two intrusive units apparently were derived from different protoliths that were formed during early to middle Archean. Initial isotopic ratios and petrochemistry for the Louis Lake batholith are consistent with an early Archean trondhjemitic to tonalitic source. The protolith for the Bears Ears pluton must have been more evolved and somewhat younger. Inconsistencies as to the degree of evolution of this protolith, as inferred from isotopic and trace-element data, suggest that the protolith may have been subjected to high-grade meta-morphism that caused loss of Rb and U prior to generation of the magma.
Epithermal Ag-Au vein and disseminated deposits in the Yankee Fork district are hosted in altered volcanic rocks having low delta 18 O values, low magnetic susceptibilities, low remanent magnetizations, and relatively high densities. These isotopic and physical quantities provide sensitive indices of rock alteration that can be contoured over areas that are much larger than zones of strong visible alteration. Such contour maps reveal a marked spatial association between the ore deposits, the steepest delta 18 O gradients, and the perimeter of zones where the rocks have extremely low total magnetizations. The oxygen isotope results indicate that the ore zones coincide with steep gradients in temperature and water/rock ratio in two fossil hydrothermal convective systems that involved fluids derived from Tertiary meteoric waters. Our magnetic measurements suggest that these same high-gradient zones also coincide with oxidation-reduction boundaries. Low aeromagnetic intensities and positive Bouguer anomalies are also associated with the altered zones in the Yankee Fork district. The intensities of these geophysical features are consistent with the size of the altered zones and with the contrast in physical properties between altered and unaltered rocks. Contour maps of the magnetic and isotopic properties of host rocks should find application in exploration for a variety of types of hydrothermal ore deposits, as well as in the study of ore controls and conditions of mineralization.
","language":"English","publisher":"Society of Economic Geologists","doi":"10.2113/gsecongeo.80.5.1277","issn":"03610128","usgsCitation":"Criss, R., Champion, D., and McIntyre, D.H., 1985, xygen isotope, aeromagnetic, and gravity anomalies associated with hydrothermally altered zones in the Yankee Fork mining district, Custer County, Idaho: Economic Geology, v. 80, no. 5, p. 1277-1296, https://doi.org/10.2113/gsecongeo.80.5.1277.","productDescription":"20 p.","startPage":"1277","endPage":"1296","numberOfPages":"20","costCenters":[],"links":[{"id":219831,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"80","issue":"5","noUsgsAuthors":false,"publicationDate":"1985-08-01","publicationStatus":"PW","scienceBaseUri":"505a72afe4b0c8380cd76c31","contributors":{"authors":[{"text":"Criss, R.E.","contributorId":10075,"corporation":false,"usgs":true,"family":"Criss","given":"R.E.","email":"","affiliations":[],"preferred":false,"id":365103,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Champion, D.E.","contributorId":70402,"corporation":false,"usgs":true,"family":"Champion","given":"D.E.","email":"","affiliations":[],"preferred":false,"id":365105,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"McIntyre, D. H.","contributorId":45726,"corporation":false,"usgs":true,"family":"McIntyre","given":"D.","email":"","middleInitial":"H.","affiliations":[],"preferred":false,"id":365104,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70013024,"text":"70013024 - 1985 - The effects of grazers and light penetration on the survival of transplants of Vallisneria americana Michs in the tidal Potomac River, Maryland","interactions":[],"lastModifiedDate":"2023-03-03T17:49:04.506001","indexId":"70013024","displayToPublicDate":"1985-01-01T00:00:00","publicationYear":"1985","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":861,"text":"Aquatic Botany","active":true,"publicationSubtype":{"id":10}},"displayTitle":"The effects of grazers and light penetration on the survival of transplants of Vallisneria americana Michs in the tidal Potomac River, Maryland","title":"The effects of grazers and light penetration on the survival of transplants of Vallisneria americana Michs in the tidal Potomac River, Maryland","docAbstract":"Poor light penetration and grazing are among the factors potentially responsible for the lack of submersed aquatic macrophytes in the tidal Potomac River. Between 1980 and 1983, plugs, springs and tubers of Vallisneria americana Michx were transplanted from the oligohaline Potomac Estuary to six sites in the freshwater tidal Potomac River. Transplants made in 1980 and 1981 were generally successful only when protected by full exclosures which prevented grazing. Grazing resulted in the removal of whole plants or clipping off of plant leaves in unprotected plots. Plants protected in the first year were permanently established, despite the occurrence of grazing in subsequent years, at Elodea Cove and Rosier Bluff, where light penetration was high (average 1% light level was 1.6–1.7 m). Plants were not permanent;y established at Goose Island, where light penetration was lower (average 1% light level was 1.4 m) and grazing occurred, or Neabsco Bay where light penetration was very low (average 1% light level was 1.0 m) and grazing may not have occurred. In 1983, Secchi depth transparencies in the upper tidal river were improved significantly compared to 1978–1981. Both protected and unprotected transplants thrived in 1983.
","language":"English","publisher":"Elsevier","doi":"10.1016/0304-3770(85)90066-X","usgsCitation":"Carter, V., and Rybicki, N.B., 1985, The effects of grazers and light penetration on the survival of transplants of Vallisneria americana Michs in the tidal Potomac River, Maryland: Aquatic Botany, v. 23, no. 3, p. 197-213, https://doi.org/10.1016/0304-3770(85)90066-X.","productDescription":"17 p.","startPage":"197","endPage":"213","numberOfPages":"17","costCenters":[{"id":436,"text":"National Research Program - Eastern Branch","active":true,"usgs":true}],"links":[{"id":219887,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Maryland","otherGeospatial":"Potomac River","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -77.22855763178708,\n 38.59197201572752\n ],\n [\n -77.14942357452662,\n 38.598464452803654\n ],\n [\n -77.10133105353873,\n 38.6237451892448\n ],\n [\n -77.0882149114515,\n 38.6479926563467\n ],\n [\n -77.09564739196809,\n 38.671549236628664\n ],\n [\n -76.99771353104805,\n 38.68895564184464\n ],\n [\n -76.99552750736672,\n 38.738762332152504\n ],\n [\n -77.01301593816976,\n 38.80727509735124\n ],\n [\n -77.01126711922468,\n 38.85597788791455\n ],\n [\n -77.02919251341086,\n 38.85461602513939\n ],\n [\n -77.03575058445406,\n 38.822945364754844\n ],\n [\n -77.03575058445406,\n 38.789897510057386\n ],\n [\n -77.03924822234423,\n 38.74728746603765\n ],\n [\n -77.04274586023436,\n 38.71147536450266\n ],\n [\n -77.0816570817606,\n 38.70465197660971\n ],\n [\n -77.11444743697908,\n 38.68588430232515\n ],\n [\n -77.14461455361123,\n 38.662332266896414\n ],\n [\n -77.12668915942506,\n 38.63877265485374\n ],\n [\n -77.22899506770776,\n 38.59197191544166\n ],\n [\n -77.22855763178708,\n 38.59197201572752\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","volume":"23","issue":"3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505bab7de4b08c986b322ea4","contributors":{"authors":[{"text":"Carter, Virginia","contributorId":12018,"corporation":false,"usgs":true,"family":"Carter","given":"Virginia","email":"","affiliations":[],"preferred":false,"id":365106,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Rybicki, Nancy B. 0000-0002-2205-7927 nrybicki@usgs.gov","orcid":"https://orcid.org/0000-0002-2205-7927","contributorId":2142,"corporation":false,"usgs":true,"family":"Rybicki","given":"Nancy","email":"nrybicki@usgs.gov","middleInitial":"B.","affiliations":[{"id":436,"text":"National Research Program - Eastern Branch","active":true,"usgs":true}],"preferred":true,"id":365107,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70013025,"text":"70013025 - 1985 - Land subsidence: Its impacts and costs in the U.S","interactions":[],"lastModifiedDate":"2012-03-12T17:18:39","indexId":"70013025","displayToPublicDate":"1985-01-01T00:00:00","publicationYear":"1985","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3667,"text":"Underground Space","active":true,"publicationSubtype":{"id":10}},"title":"Land subsidence: Its impacts and costs in the U.S","docAbstract":"[No abstract available]","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Underground Space","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","issn":"03620565","usgsCitation":"Holzer, T., 1985, Land subsidence: Its impacts and costs in the U.S: Underground Space, v. 9, no. 5-6.","startPage":"260","costCenters":[],"links":[{"id":219888,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"9","issue":"5-6","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a41c0e4b0c8380cd65784","contributors":{"authors":[{"text":"Holzer, T.L.","contributorId":35739,"corporation":false,"usgs":true,"family":"Holzer","given":"T.L.","email":"","affiliations":[],"preferred":false,"id":365108,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70013026,"text":"70013026 - 1985 - Geology of the Brick Flat massive sulfide body, Iron Mountain cluster, West Shasta district, California","interactions":[],"lastModifiedDate":"2024-01-08T23:29:58.877559","indexId":"70013026","displayToPublicDate":"1985-01-01T00:00:00","publicationYear":"1985","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1472,"text":"Economic Geology","active":true,"publicationSubtype":{"id":10}},"title":"Geology of the Brick Flat massive sulfide body, Iron Mountain cluster, West Shasta district, California","docAbstract":"The Brick Flat massive sulfide body is one of a group of 8 individual bodies that constitute the Iron Mountain cluster in the S part of the West Shasta district. Before they were separated by postmineral faulting, 5 of the 8 sulfide bodies formed a single large deposit about 1375 m long with a mass of some 23 million metric tons. The pyritic Brick Flat sulfide body is one of the 5 faulted segements of this deposit. The Brick Flat massive sulfide lies within medium phenocryst rhyolite that is characteristic of the ore-bearing middle unit of the Balaklala Rhyolite. It is interpreted to be downfaulted a vertical distance of 75 to 85 m from the Old Mine sulfide-gossan orebody along the N-dipping Camden South fault. It is bounded in turn on its N side by another parallel fault, the Camden North, which drops the orebody down another 75 m to the level of the Richmond orebody. -from Author","language":"English","publisher":"Society of Economic Geologists","doi":"10.2113/gsecongeo.80.8.2092","issn":"03610128","usgsCitation":"Albers, J.P., 1985, Geology of the Brick Flat massive sulfide body, Iron Mountain cluster, West Shasta district, California: Economic Geology, v. 80, no. 8, p. 2092-2099, https://doi.org/10.2113/gsecongeo.80.8.2092.","productDescription":"8 p.","startPage":"2092","endPage":"2099","numberOfPages":"8","costCenters":[],"links":[{"id":219889,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"80","issue":"8","noUsgsAuthors":false,"publicationDate":"1985-12-01","publicationStatus":"PW","scienceBaseUri":"505a2524e4b0c8380cd5867b","contributors":{"authors":[{"text":"Albers, J. P.","contributorId":81505,"corporation":false,"usgs":true,"family":"Albers","given":"J.","email":"","middleInitial":"P.","affiliations":[],"preferred":false,"id":365109,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70013027,"text":"70013027 - 1985 - Point- and nonpoint-source trace elements in a wild and scenic river of northern New Mexico.","interactions":[],"lastModifiedDate":"2013-03-15T20:54:35","indexId":"70013027","displayToPublicDate":"1985-01-01T00:00:00","publicationYear":"1985","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2456,"text":"Journal of Soil and Water Conservation","active":true,"publicationSubtype":{"id":10}},"title":"Point- and nonpoint-source trace elements in a wild and scenic river of northern New Mexico.","docAbstract":"Variations in water quality of the upper Rio Grande and Red River are presented. A downstream increase in concentrations of various constituents, at times approaching or exceeding water quality standards, occurred due to leaching of natural ore bodies and permitted discharges from molybdenum mill tailings ponds. Nonpoint sources are a major cause of elevated trace element concentrations.-from Author","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of Soil and Water Conservation","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"Soil and Water Conservation Society","usgsCitation":"Garn, H., 1985, Point- and nonpoint-source trace elements in a wild and scenic river of northern New Mexico.: Journal of Soil and Water Conservation, v. 40, no. 5, p. 458-462.","startPage":"458","endPage":"462","numberOfPages":"5","costCenters":[],"links":[{"id":219890,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":269421,"type":{"id":11,"text":"Document"},"url":"https://www.jswconline.org/content/40/5/458.abstract"}],"volume":"40","issue":"5","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a7cb6e4b0c8380cd79b34","contributors":{"authors":[{"text":"Garn, H.S.","contributorId":42601,"corporation":false,"usgs":true,"family":"Garn","given":"H.S.","affiliations":[],"preferred":false,"id":365110,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70013031,"text":"70013031 - 1985 - Empirical estimates of cumulative refraction errors associated with procedurally constrained levelings based on the Gaithersburg- Tucson refraction tests of the National Geodetic Survey","interactions":[],"lastModifiedDate":"2024-02-14T12:16:58.968907","indexId":"70013031","displayToPublicDate":"1985-01-01T00:00:00","publicationYear":"1985","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":"Empirical estimates of cumulative refraction errors associated with procedurally constrained levelings based on the Gaithersburg- Tucson refraction tests of the National Geodetic Survey","docAbstract":"Analyses of results of the National Geodetic Survey's leveling refraction tests indicate that the standard deviation about the mean (σ) for high-scale minus low-scale rod readings closely correlates with measured refraction error. Use of this relation in conjunction with values for σ obtained from routinely constrained surveys provides a basis for estimating the refraction error associated with levelings of stipulated order and class.
The discharge of effluents containing creosote and pentachlorophenol into two unlined surface impoundments at a wood-treatment facility in Pensacola, Florida, resulted in contamination of the underlying sand and gravel aquifer. These wastes contained significant amounts of chlorinated dioxins, such as isomers of hexa- and heptachlorodibenzo-p-dioxins and octachlorodibenzo-p-dioxin, probably derived from commercial pentachlorophenol. Geochemical investigations of pond sludge, groundwater and porous media from the unsaturated and saturated zones indicated that these geologic materials were contaminated by chlorinated dioxins. The fate and movement of these compounds in the subsurface environment were studied using the technique of GC-MS-MS. Chlorinated dioxins migrated both vertically and horizontally in the subsurface and were present at considerable distances from the source of contamination. Concentrations of chlorinated dioxins in groundwater were several orders of magnitude lower than in porous media from the unsaturated and saturated zones. Ratios of the various isomers remained relatively constant in highly contaminated areas. However, in less contaminated areas, isomer ratios changed dramatically; at certain locations, one hexachlorodibenzo-p-dioxin isomer predominated. The environmental significance of these compounds is discussed.
","language":"English","publisher":"Wiley","doi":"10.1002/etc.5620040507","issn":"07307268","usgsCitation":"Pereira, W.E., Rostad, C., and Sisak, M., 1985, Geochemical investigations of polychlorinated dibenzo-p-dioxins in the subsurface environment at an abandoned wood-treatment facility: Environmental Toxicology and Chemistry, v. 4, no. 5, p. 629-639, https://doi.org/10.1002/etc.5620040507.","productDescription":"11 p.","startPage":"629","endPage":"639","numberOfPages":"11","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":219952,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"4","issue":"5","noUsgsAuthors":false,"publicationDate":"1985-10-01","publicationStatus":"PW","scienceBaseUri":"505a1649e4b0c8380cd5510b","contributors":{"authors":[{"text":"Pereira, W. E.","contributorId":46981,"corporation":false,"usgs":true,"family":"Pereira","given":"W.","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":365128,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Rostad, C.E.","contributorId":50939,"corporation":false,"usgs":true,"family":"Rostad","given":"C.E.","email":"","affiliations":[],"preferred":false,"id":365129,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Sisak, M.E.","contributorId":24912,"corporation":false,"usgs":true,"family":"Sisak","given":"M.E.","email":"","affiliations":[],"preferred":false,"id":365127,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70013034,"text":"70013034 - 1985 - Preparation, homogenization, and storage of earth standards used and distributed by the International Humic Substances Society","interactions":[],"lastModifiedDate":"2025-03-17T16:04:17.884859","indexId":"70013034","displayToPublicDate":"1985-01-01T00:00:00","publicationYear":"1985","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2958,"text":"Organic Geochemistry","active":true,"publicationSubtype":{"id":10}},"title":"Preparation, homogenization, and storage of earth standards used and distributed by the International Humic Substances Society","docAbstract":"No abstract available.
","language":"English","publisher":"Elsevier","doi":"10.1016/0146-6380(85)90060-9","usgsCitation":"Campbell, W.L., and Malcolm, M., 1985, Preparation, homogenization, and storage of earth standards used and distributed by the International Humic Substances Society: Organic Geochemistry, v. 8, no. 1, p. 109-109, https://doi.org/10.1016/0146-6380(85)90060-9.","productDescription":"1 p.","startPage":"109","endPage":"109","costCenters":[],"links":[{"id":219953,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Florida, Illinois, North 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\"}}]}","volume":"8","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a8b28e4b0c8380cd7e197","contributors":{"authors":[{"text":"Campbell, W. L.","contributorId":46939,"corporation":false,"usgs":true,"family":"Campbell","given":"W.","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":365130,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Malcolm, Mollie","contributorId":76593,"corporation":false,"usgs":true,"family":"Malcolm","given":"Mollie","email":"","affiliations":[],"preferred":false,"id":365131,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70013036,"text":"70013036 - 1985 - Water balance models in one-month-ahead streamflow forecasting","interactions":[],"lastModifiedDate":"2018-02-12T18:00:25","indexId":"70013036","displayToPublicDate":"1985-01-01T00:00:00","publicationYear":"1985","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":"Water balance models in one-month-ahead streamflow forecasting","docAbstract":"Techniques are tested that incorporate information from water balance models in making 1-month-ahead streamflow forecasts in New Jersey. The results are compared to those based on simple autoregressive time series models. The relative performance of the models is dependent on the month of the year in question. The water balance models are most useful for forecasts of April and May flows. For the stations in northern New Jersey, the April and May forecasts were made in order of decreasing reliability using the water-balance-based approaches, using the historical monthly means, and using simple autoregressive models. The water balance models were useful to a lesser extent for forecasts during the fall months. For the rest of the year the improvements in forecasts over those obtained using the simpler autoregressive models were either very small or the simpler models provided better forecasts. When using the water balance models, monthly corrections for bias are found to improve minimum mean-square-error forecasts as well as to improve estimates of the forecast conditional distributions.