The nesting biology of Pacific Loons, Gavia pacifica, was studied from 1973 to 1975 on the Yukon-Kuskokwim Delta, Alaska. Loons maintained territories on ponds throughout the pre-nesting period. Both adults incubated eggs and raised the young. Males incubated more than females during early incubation, and females more than males during late incubation. The female assumes much of the early brood rearing, with the male assisting more when food demands of young increase later in brood rearing.
","language":"English","publisher":"Ottawa Field-Naturalists' Club","usgsCitation":"Petersen, M.R., 1989, Nesting biology of pacific loons, Gavia pacifica, on the Yukon-Kuskokwim Delta, Alaska: Canadian Field-Naturalist, v. 103, no. 2, p. 265-269.","productDescription":"5 p.","startPage":"265","endPage":"269","costCenters":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true}],"links":[{"id":335195,"rank":2,"type":{"id":15,"text":"Index Page"},"url":"https://www.biodiversitylibrary.org/part/356129","text":"Journal's Website"},{"id":335196,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Alaska","otherGeospatial":"Yukon Delta National Wildlife Refuge, Yukon-Kuskokwim Delta","volume":"103","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"58a18227e4b0c825128564b4","contributors":{"authors":[{"text":"Petersen, Margaret R. 0000-0001-6082-3189 mrpetersen@usgs.gov","orcid":"https://orcid.org/0000-0001-6082-3189","contributorId":167729,"corporation":false,"usgs":true,"family":"Petersen","given":"Margaret","email":"mrpetersen@usgs.gov","middleInitial":"R.","affiliations":[{"id":117,"text":"Alaska Science Center Biology WTEB","active":true,"usgs":true}],"preferred":true,"id":663420,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":2002635,"text":"2002635 - 1989 - Nuclear cataract frequency in lake trout recovered from Lake Ontario 1988","interactions":[],"lastModifiedDate":"2012-02-02T00:14:57","indexId":"2002635","displayToPublicDate":"1989-01-01T00:00:00","publicationYear":"1989","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":9,"text":"Other Report"},"seriesTitle":{"id":409,"text":"Salmon Genetics Research Program Report Series, Technical Report","active":false,"publicationSubtype":{"id":9}},"seriesNumber":"131","title":"Nuclear cataract frequency in lake trout recovered from Lake Ontario 1988","docAbstract":"No abstract available at this time","largerWorkType":{"id":18,"text":"Report"},"largerWorkTitle":"Salmon Genetics Research Program Report Series, Technical Report 131","largerWorkSubtype":{"id":9,"text":"Other Report"},"language":"English","publisher":"Department of Fisheries and Oceans, Biological Station","publisherLocation":"St. Andrews, New Brunswick, Canada","collaboration":"91-036/NF","usgsCitation":"Kincaid, H.L., 1989, Nuclear cataract frequency in lake trout recovered from Lake Ontario 1988: Salmon Genetics Research Program Report Series, Technical Report 131, p. 18-28.","productDescription":"p. 18-28","startPage":"18","endPage":"28","numberOfPages":"11","costCenters":[{"id":365,"text":"Leetown Science Center","active":true,"usgs":true}],"links":[{"id":199326,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4b1ae4b07f02db6a807a","contributors":{"authors":[{"text":"Kincaid, H. L.","contributorId":21891,"corporation":false,"usgs":false,"family":"Kincaid","given":"H.","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":326629,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":2001480,"text":"2001480 - 1989 - Acid-sensitive lake responds to mitigative liming","interactions":[],"lastModifiedDate":"2012-02-02T00:14:59","indexId":"2001480","displayToPublicDate":"1989-01-01T00:00:00","publicationYear":"1989","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":1,"text":"Federal Government Series"},"seriesTitle":{"id":70,"text":"Research Information Bulletin","active":false,"publicationSubtype":{"id":1}},"seriesNumber":"82","title":"Acid-sensitive lake responds to mitigative liming","docAbstract":"No abstract available at this time","language":"English","publisher":"U.S. Fish and Wildlife Service","collaboration":"90-007/FC","usgsCitation":"Schreiber, R., and Villella, R., 1989, Acid-sensitive lake responds to mitigative liming: Research Information Bulletin 82, 3 p.","productDescription":"3 p.","startPage":"0","endPage":"3","numberOfPages":"3","costCenters":[{"id":365,"text":"Leetown Science Center","active":true,"usgs":true}],"links":[{"id":198811,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4b09e4b07f02db69c05d","contributors":{"authors":[{"text":"Schreiber, R.K.","contributorId":92988,"corporation":false,"usgs":true,"family":"Schreiber","given":"R.K.","email":"","affiliations":[],"preferred":false,"id":325781,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Villella, R.F.","contributorId":53323,"corporation":false,"usgs":true,"family":"Villella","given":"R.F.","email":"","affiliations":[],"preferred":false,"id":325780,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":2001489,"text":"2001489 - 1989 - Entrainment in net effective means for transporting juvenile American shad","interactions":[],"lastModifiedDate":"2012-02-02T00:14:56","indexId":"2001489","displayToPublicDate":"1989-01-01T00:00:00","publicationYear":"1989","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":1,"text":"Federal Government Series"},"seriesTitle":{"id":70,"text":"Research Information Bulletin","active":false,"publicationSubtype":{"id":1}},"seriesNumber":"93","title":"Entrainment in net effective means for transporting juvenile American shad","docAbstract":"No abstract available at this time","language":"English","publisher":"U.S. Fish and Wildlife Service","collaboration":"90-018/NF","usgsCitation":"Backman, T.W., 1989, Entrainment in net effective means for transporting juvenile American shad: Research Information Bulletin 93, 2 p.","productDescription":"2 p.","startPage":"0","endPage":"2","numberOfPages":"2","costCenters":[],"links":[{"id":199027,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a14e4b07f02db60266d","contributors":{"authors":[{"text":"Backman, T. W. H.","contributorId":84307,"corporation":false,"usgs":true,"family":"Backman","given":"T.","email":"","middleInitial":"W. H.","affiliations":[],"preferred":false,"id":325797,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70015305,"text":"70015305 - 1989 - Depositional environments and tectonic controls on the coal-bearing Lower to Middle Jurassic Yan'an Formation, southern Ordos Basin, China","interactions":[],"lastModifiedDate":"2024-01-24T12:13:14.906925","indexId":"70015305","displayToPublicDate":"1989-01-01T00:00:00","publicationYear":"1989","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1796,"text":"Geology","active":true,"publicationSubtype":{"id":10}},"title":"Depositional environments and tectonic controls on the coal-bearing Lower to Middle Jurassic Yan'an Formation, southern Ordos Basin, China","docAbstract":"The Ordos Basin of north-central China is well known for vast energy resources. This nonmarine interior basin developed on the North China-Korean platform following the Late Triassic Indochina orogeny and, for a time, contained a large freshwater lake prior to being uplifted into its present form at the close of the Mesozoic. Lower to Middle Jurassic coal occurs in the fluviolacustrine Yan'an Formation along the southern margin of the basin in the Huanglong coalfield. In the northeast part of the field, the formation ranges from 0 to 180 m in thickness and is divided into five fining-upward members, each representing a regressive-transgressive lacustrine cycle. Low-sulfur, high-volatile bituminous coal is complexly distributed in the lowest member of the Yan'an Formation. Deposition of this member was influenced by two tectonic events that controlled coal occurrence. First, regional uplifts were produced by the Late Triassic Indochina orogeny and left as highlands on the pre-Yan'an, Triassic land surface; in the lowest member, coal beds thin toward and pinch out against these highlands. Second, syndepositional tectonism of the Jurassic through Cretaceous Yanshan orogeny created a series of northeast-trending folds that were topographically expressed as evolving highs and lows. Swamps and resulting peat accumulation preferentially occupied the subsiding paleodepressions. Because of the tectonic influence on peat accumulation, coal beds thin and merge toward anticlines and thicken and split toward synclines. In addition, coal quality is documented to be less variable along a northeast trend than along a northwest trend.
A lava dome was built in the crater of Mount St. Helens by intermittent intrusion and extrusion of dacite lava between 1980 and 1986. Spectacular ground deformation was associated with the dome building events and included the development of a system of radial cracks and tangential thrust faults in the surrounding crater floor. These cracks and thrusts, best developed and studied in 1981-1982, formed because the crater fill was displaced upward and radially outward from the feeder conduit, owing to rising magma. Radial cracks formed first and, as some evolved into strike-slip tear faults, influenced the subsequent geometry of thrusting. Once faulting began, deformation was localized near the thrust scarps and their bounding tear faults. The magnitude of displacements systematically increased before extrusions, whereas the azimuth and inclination of displacements remained relatively constant. The thrust-fault scarps were bulbous in profile, lobate in plan, and steepened during continued fault movement. The hanging walls of each thrust were increasingly disrupted as cumulative fault slip increased. The crater fill was unconsolidated to weakly consolidated near the surface and influenced the morphology of the thrust-fault scarps. Similar structures have been produced by active thrust faults in other areas with unconsolidated alluvium at the surface, and in laboratory sandbox experiments.
Measurements on fluid inclusions in hydrothermal dolomite cements place constraints on sulfide precipitation mechanisms and on the thermal-hydrologic processes which formed the Viburnum Trend Mississippi Valley-type lead district. Homogenization temperatures and freezing point depressions were determined for fluid inclusions in Bonneterre Dolomite-hosted dolomite cements in mine samples, as well as drill core from up to 13 km outside of the district. A well-defined cathodoluminescent zonation distinguishes dolomite growth zones in the Vi-burnurn Trend as older or younger than main-stage mineralization (octahedral galena) and facilitates correlation with other dolomites outside the Viburnum Trend.Homogenization temperatures and salinities in samples from mines are not systematically different from those of samples outside of the district. Medians of homogenization temperature distributions differ by not more than 25 degrees C, so that a temperature gradient, if present, should not have exceeded approximately 25 degrees C within the study area. These observations are interpreted to indicate that the Viburnum Trend was not strongly thermally anomalous with respect to surrounding country rock and that fluid flow occurred on a broad scale through not only the Lamotte Sandstone but through the overlying Cambrian carbonates as well.The absence of a significant, recognizable decrease in temperature either vertically within the section or east-west across the district, coupled with the minor amount of silica in the district, argues against cooling as a primary cause of sulfide precipitation. Fluids whose primary aquifer was the Lamotte Sandstone, predominantly a quartz arenite, should have been in equilibrium with quartz. Quartz in the Viburnum Trend occurs as a minor, drusy, vug-lining phase, but the district lacks the intense silicification found in other Mississippi Valley-type districts such as Tri-State (Oklahoma, Kansas, Missouri). Quartz solubility is strongly temperature dependent and, under equilibrium conditions, a decrease of 10 degrees C or more should have precipitated at least as many moles of silica as galena (assuming a galena solubility of between 1 and 10 ppm). Clearly this is not the case, as galena is far more abundant than quartz in the Viburnum Trend.Ice final-melting temperatures (T m ) in fluid inclusions generally range from -14 degrees to -27 degrees C for primary dolomite-hosted inclusions. Using these T m values and cation ratios for the inclusion fluids, absolute concentrations for the individual cations and chloride were calculated using the thermochemical model of Spencer et al. (1990). The corresponding high but variable salinities, 3.9 to 5.9 chloride molality, are evidence for the presence of more than one distinct fluid during mineralization.In a reduced sulfur mineralization model with Pb carried as chloride complexes, dilution is also a possible sulfide precipitation mechanism. The difference in Pb solubility (for an equal quantity of reduced sulfur) in the extremes of the chloride concentration range, 3.9 vs. 5.9 molal, reaches 1 ppm only for pH values below approximately 4.5. Accepting 1 ppm as a minimum metal concentration for a viable ore-forming fluid, dilution only appears capable of precipitating sulfides in a fluid with pH near the lower limit of values considered geologically reasonable or attainable.Dolomite cements hosting warm (approximately 105 degrees -125 degrees C) saline fluid inclusions are ubiquitous in the porous dolomitic facies of the Bonneterre Dolomite. Based on stratigraphic reconstructions, however, it is unlikely that the Bonneterre was buried deeper than 1.5 km. The distribution of warm inclusions beyond the Viburnum Trend district implies that fluid migration was regional in scale. Fluid inclusion temperatures inconsistent with typical basement heat-flow-controlled geothermal gradients (25 degrees -35 degrees C/km) may be explained by long-distance migration of warm, basin-derived brines. Elevated temperatures observed in fluid inclusions at shallow stratigraphic depths are consistent with a gravity flow hydrologic system characterized by rapid flow rates and the capacity for advective heat transport.
","language":"English","publisher":"Society of Economic Geologists","doi":"10.2113/gsecongeo.84.7.1948","issn":"03610128","usgsCitation":"Rowan, E., and Leach, D.L., 1989, Constraints from fluid inclusions on sulfide precipitation mechanisms and ore fluid migration in the Viburnum Trend lead district, Missouri: Economic Geology, v. 84, no. 7, p. 1948-1965, https://doi.org/10.2113/gsecongeo.84.7.1948.","productDescription":"18 p.","startPage":"1948","endPage":"1965","numberOfPages":"18","costCenters":[],"links":[{"id":224360,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"84","issue":"7","noUsgsAuthors":false,"publicationDate":"1989-11-01","publicationStatus":"PW","scienceBaseUri":"5059fa09e4b0c8380cd4d8bd","contributors":{"authors":[{"text":"Rowan, E. L. 0000-0001-5753-6189","orcid":"https://orcid.org/0000-0001-5753-6189","contributorId":34921,"corporation":false,"usgs":true,"family":"Rowan","given":"E. L.","affiliations":[],"preferred":false,"id":370587,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Leach, D. L.","contributorId":18758,"corporation":false,"usgs":true,"family":"Leach","given":"D.","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":370586,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70015302,"text":"70015302 - 1989 - Debris is not a cheese: litter in coastal Louisiana","interactions":[],"lastModifiedDate":"2012-03-12T17:18:54","indexId":"70015302","displayToPublicDate":"1989-01-01T00:00:00","publicationYear":"1989","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"Debris is not a cheese: litter in coastal Louisiana","docAbstract":"An 18-month study of six Louisiana beaches determined the extent, composition, and possible sources of beach litter. Data showed that from 2590 to 23,154 items may be encountered along any one-mile stretch of Louisiana beach, depending upon location and season, and that densities of litter ranged from 5 to 28 items per 100 m2. Plastics constituted 47% of the total, followed by polystyrene at 16% and glass at 10%. Drink-related items accounted for 40% of the identifiable material; operational wastes, 21%; galley wastes, 15%; personal items, 11%; and fishing items, 6%. Litter laws already exist at state and federal levels. Strict enforcement of Annex V of MARPOL should significantly reduce plastic beach litter. Solutions to beach litter will come from public participation in adopt-a-beach programs and statewide clean-ups and from educational programs focusing on existing laws, proper disposal methods, recycling, and the threat litter poses to wildlife and public health.","largerWorkTitle":"Coastal Zone: Proceedings of the Symposium on Coastal and Ocean Management","conferenceTitle":"Coastal Zone '89: Proceedings of the Sixth Symposium on Coastal and Ocean Management","conferenceDate":"11 July 1989 through 14 July 1989","conferenceLocation":"Charleston, SC, USA","language":"English","publisher":"Publ by ASCE","publisherLocation":"New York, NY, United States","usgsCitation":"Lindstedt, D.M., and Holmes, J.C., 1989, Debris is not a cheese: litter in coastal Louisiana, in Coastal Zone: Proceedings of the Symposium on Coastal and Ocean Management, v. 2, no. pt2, Charleston, SC, USA, 11 July 1989 through 14 July 1989, p. 1297-1310.","startPage":"1297","endPage":"1310","numberOfPages":"14","costCenters":[],"links":[{"id":224302,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"2","issue":"pt2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059fdf4e4b0c8380cd4ea23","contributors":{"authors":[{"text":"Lindstedt, Dianne M.","contributorId":90473,"corporation":false,"usgs":true,"family":"Lindstedt","given":"Dianne","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":370584,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Holmes, Joseph C. Jr.","contributorId":90883,"corporation":false,"usgs":true,"family":"Holmes","given":"Joseph","suffix":"Jr.","email":"","middleInitial":"C.","affiliations":[],"preferred":false,"id":370585,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70015444,"text":"70015444 - 1989 - Convergance experiments with a hydrodynamic model of Port Royal Sound, South Carolina","interactions":[],"lastModifiedDate":"2016-11-30T10:05:20","indexId":"70015444","displayToPublicDate":"1989-01-01T00:00:00","publicationYear":"1989","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"Convergance experiments with a hydrodynamic model of Port Royal Sound, South Carolina","docAbstract":"A two-demensional, depth-averaged, finite-difference, flow/transport model, SIM2D, is being used to simulate tidal circulation and transport in the Port Royal Sound, South Carolina, estuarine system. Models of a subregion of the Port Royal Sound system have been derived from an earlier-developed model of the entire system having a grid size of 600 ft. The submodels were implemented with grid sizes of 600, 300, and 150 ft in order to determine the effects of changes in grid size on computed flows in the subregion, which is characterized by narrow channels and extensive tidal flats that flood and dewater with each rise and fall of the tide. Tidal amplitudes changes less than 5 percent as the grid size was decreased. Simulations were performed with the 300-foot submodel for time steps of 60, 30, and 15 s. Study results are discussed.","conferenceTitle":"Proceedings of the 1989 National Conference on Hydraulic Engineering","conferenceDate":"14 August 1989 through 18 August 1989","conferenceLocation":"New Orleans, LA, USA","language":"English","publisher":"Publ by ASCE","publisherLocation":"New York, NY, United States","isbn":"0872627195","usgsCitation":"Lee, J.K., Schaffranek, R., and Baltzer, R., 1989, Convergance experiments with a hydrodynamic model of Port Royal Sound, South Carolina, Proceedings of the 1989 National Conference on Hydraulic Engineering, New Orleans, LA, USA, 14 August 1989 through 18 August 1989, p. 434-441.","startPage":"434","endPage":"441","numberOfPages":"8","costCenters":[{"id":13634,"text":"South Atlantic Water Science Center","active":true,"usgs":true}],"links":[{"id":224094,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"South Carolina","otherGeospatial":"Port Royal Sound","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059fbd7e4b0c8380cd4dfd0","contributors":{"authors":[{"text":"Lee, J. K.","contributorId":28233,"corporation":false,"usgs":true,"family":"Lee","given":"J.","email":"","middleInitial":"K.","affiliations":[],"preferred":false,"id":370946,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Schaffranek, R.W.","contributorId":61468,"corporation":false,"usgs":true,"family":"Schaffranek","given":"R.W.","affiliations":[],"preferred":false,"id":370947,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Baltzer, R.A.","contributorId":86321,"corporation":false,"usgs":true,"family":"Baltzer","given":"R.A.","email":"","affiliations":[],"preferred":false,"id":370948,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70015446,"text":"70015446 - 1989 - Reactive iron transport in an acidic mountain stream in Summit County, Colorado: A hydrologic perspective","interactions":[],"lastModifiedDate":"2024-04-11T16:21:10.387641","indexId":"70015446","displayToPublicDate":"1989-01-01T00:00:00","publicationYear":"1989","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1759,"text":"Geochimica et Cosmochimica Acta","active":true,"publicationSubtype":{"id":10}},"title":"Reactive iron transport in an acidic mountain stream in Summit County, Colorado: A hydrologic perspective","docAbstract":"A pH perturbation experiment was conducted in an acidic, metal-enriched, mountain stream to identify relative rates of chemical and hydrologic processes as they influence iron transport. During the experiment the pH was lowered from 4.2 to 3.2 for three hours by injection of sulfuric acid. Amorphous iron oxides are abundant on the streambed, and dissolution and photoreduction reactions resulted in a rapid increase in the dissolved iron concentration. The increase occurred simultaneously with the decrease in pH. Ferrous iron was the major aqueous iron species. The changes in the iron concentration during the experiment indicate that variation exists in the solubility properties of the hydrous iron oxides on the streambed with dissolution of at least two compartments of hydrous iron oxides contributing to the iron pulse. Spatial variations of the hydrologic properties along the stream were quantified by simulating the transport of a coinjected tracer, lithium. A simulation of iron transport, as a conservative solute, indicated that hydrologie transport had a significant role in determining downstream changes in the iron pulse. The rapidity of the changes in iron concentration indicates that a model based on dynamic equilibrium may be adequate for simulating iron transport in acid streams. A major challenge for predictive solute transport models of geochemical processes may be due to substantial spatial and seasonal variations in chemical properties of the reactive hydrous oxides in such streams, and in the physical and hydrologic properties of the stream.
","language":"English","publisher":"Elsevier","doi":"10.1016/0016-7037(89)90346-3","issn":"00167037","usgsCitation":"McKnight, D.M., and Bencala, K., 1989, Reactive iron transport in an acidic mountain stream in Summit County, Colorado: A hydrologic perspective: Geochimica et Cosmochimica Acta, v. 53, no. 9, p. 2225-2234, https://doi.org/10.1016/0016-7037(89)90346-3.","productDescription":"10 p.","startPage":"2225","endPage":"2234","numberOfPages":"10","costCenters":[],"links":[{"id":224152,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"53","issue":"9","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a9584e4b0c8380cd81a78","contributors":{"authors":[{"text":"McKnight, Diane M.","contributorId":59773,"corporation":false,"usgs":false,"family":"McKnight","given":"Diane","email":"","middleInitial":"M.","affiliations":[{"id":16833,"text":"INSTAAR, University of Colorado","active":true,"usgs":false}],"preferred":false,"id":370956,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Bencala, K.E.","contributorId":105312,"corporation":false,"usgs":true,"family":"Bencala","given":"K.E.","email":"","affiliations":[],"preferred":false,"id":370957,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70015291,"text":"70015291 - 1989 - The prediction of aquatic sediment-associated trace element concentration using selected geochemical factors","interactions":[],"lastModifiedDate":"2024-03-28T00:23:36.602859","indexId":"70015291","displayToPublicDate":"1989-01-01T00:00:00","publicationYear":"1989","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1924,"text":"Hydrological Processes","active":true,"publicationSubtype":{"id":10}},"title":"The prediction of aquatic sediment-associated trace element concentration using selected geochemical factors","docAbstract":"Multiple linear regression models calculated from readily obtainable chemical and physical parameters can explain a high percentage (70 per cent or greater) of observed sediment-trace element variance for Cu, Zn, Pb, Cr, Ni, Co, As, Sb, Se, and Hg in a widely divergent suite of 61 sediment samples. The independent variables used in the models may be single parameters, principal component scores, or principal component scores combined with their cross-products. The most useful type of variable must be determined on a case-by-case basis.
The independent variables (geochemical parameters) incorporated in the models calculated during this study probably are applicable to many aquatic sediments; albeit, use of a larger data set (>61) could alter the magnitude of the calculated coefficients. The geochemical parameters included in the models were of a physical (e.g. grain size, surface area) and a chemical (e.g. organic matter, amorphous iron oxides) nature. Comparison between actual and predicted trace element concentrations obtained from the models may provide a means of defining ‘average’ sediment-trace element concentrations. In this context, the models may also help identify either naturally or anthropogenically impacted sites for additional study.
Seabeam data reveal two deep subcircular reentrants in the lower are slope of the New Hebrides island arc that may illustrate two stages in the development of a novel type of forearc basin. The Malekula reentrant lies just south of the partly subducted Bougainville seamount. This proximity, as well as the similarity in morphology between the reentrant and an indentation in the lower arc slope off Japan, suggests that the Malekula reentrant formed by the collision of a seamount with the arc. An arcuate fold-thrust belt has formed across the mouth of the reentrant, forming the toe of a new accretionary wedge. The Efate reentrant may show the next stage in basin development. This reentrant lies landward of a lower-slope ridge that may have begun to form as an arcuate fold-thrust belt across the mouth of a reentrant. This belt may have grown by continued accretion at the toe of the wedge, by underplating beneath the reentrant, and by trapping of sediment shed from the island arc. These processes could result in a roughly circular forearc basin. Basins that may have formed by seamount collision lie within the accretionary wedge adjacent to the Aleutian trenches.
No abstract available.
","language":"English","publisher":"American Chemical Society","doi":"10.1021/es00068a013","issn":"0013936X","usgsCitation":"Hooper, R.P., and Peters, N., 1989, Use of multivariate analysis for determining sources of solutes found in wet atmospheric deposition in the United States: Environmental Science & Technology, v. 23, no. 10, p. 1263-1268, https://doi.org/10.1021/es00068a013.","productDescription":"6 p.","startPage":"1263","endPage":"1268","costCenters":[],"links":[{"id":223927,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","geographicExtents":"{\"type\":\"FeatureCollection\",\"features\":[{\"type\":\"Feature\",\"geometry\":{\"type\":\"MultiPolygon\",\"coordinates\":[[[[-66.28243,18.51476],[-65.7713,18.42668],[-65.591,18.22803],[-65.84716,17.97591],[-66.59993,17.98182],[-67.18416,17.94655],[-67.24243,18.37446],[-67.10068,18.5206],[-66.28243,18.51476]]],[[[-155.54211,19.08348],[-155.68817,18.91619],[-155.93665,19.05939],[-155.90806,19.33888],[-156.07347,19.70294],[-156.02368,19.81422],[-155.85008,19.97729],[-155.91907,20.17395],[-155.86108,20.26721],[-155.78505,20.2487],[-155.40214,20.07975],[-155.22452,19.99302],[-155.06226,19.8591],[-154.80741,19.50871],[-154.83147,19.45328],[-155.22217,19.23972],[-155.54211,19.08348]]],[[[-156.07926,20.64397],[-156.41445,20.57241],[-156.58673,20.783],[-156.70167,20.8643],[-156.71055,20.92676],[-156.61258,21.01249],[-156.25711,20.91745],[-155.99566,20.76404],[-156.07926,20.64397]]],[[[-156.75824,21.17684],[-156.78933,21.06873],[-157.32521,21.09777],[-157.25027,21.21958],[-156.75824,21.17684]]],[[[-157.65283,21.32217],[-157.70703,21.26442],[-157.7786,21.27729],[-158.12667,21.31244],[-158.2538,21.53919],[-158.29265,21.57912],[-158.0252,21.71696],[-157.94161,21.65272],[-157.65283,21.32217]]],[[[-159.34512,21.982],[-159.46372,21.88299],[-159.80051,22.06533],[-159.74877,22.1382],[-159.5962,22.23618],[-159.36569,22.21494],[-159.34512,21.982]]],[[[-94.81758,49.38905],[-94.64,48.84],[-94.32914,48.67074],[-93.63087,48.60926],[-92.61,48.45],[-91.64,48.14],[-90.83,48.27],[-89.6,48.01],[-89.27292,48.01981],[-88.37811,48.30292],[-87.43979,47.94],[-86.46199,47.55334],[-85.65236,47.22022],[-84.87608,46.90008],[-84.77924,46.6371],[-84.54375,46.53868],[-84.6049,46.4396],[-84.3367,46.40877],[-84.14212,46.51223],[-84.09185,46.27542],[-83.89077,46.11693],[-83.61613,46.11693],[-83.46955,45.99469],[-83.59285,45.81689],[-82.55092,45.34752],[-82.33776,44.44],[-82.13764,43.57109],[-82.43,42.98],[-82.9,42.43],[-83.12,42.08],[-83.142,41.97568],[-83.02981,41.8328],[-82.69009,41.67511],[-82.43928,41.67511],[-81.27775,42.20903],[-80.24745,42.3662],[-78.93936,42.86361],[-78.92,42.965],[-79.01,43.27],[-79.17167,43.46634],[-78.72028,43.62509],[-77.73789,43.62906],[-76.82003,43.62878],[-76.5,44.01846],[-76.375,44.09631],[-75.31821,44.81645],[-74.867,45.00048],[-73.34783,45.00738],[-71.50506,45.0082],[-71.405,45.255],[-71.08482,45.30524],[-70.66,45.46],[-70.305,45.915],[-69.99997,46.69307],[-69.23722,47.44778],[-68.905,47.185],[-68.23444,47.35486],[-67.79046,47.06636],[-67.79134,45.70281],[-67.13741,45.13753],[-66.96466,44.8097],[-68.03252,44.3252],[-69.06,43.98],[-70.11617,43.68405],[-70.64548,43.09024],[-70.81489,42.8653],[-70.825,42.335],[-70.495,41.805],[-70.08,41.78],[-70.185,42.145],[-69.88497,41.92283],[-69.96503,41.63717],[-70.64,41.475],[-71.12039,41.49445],[-71.86,41.32],[-72.295,41.27],[-72.87643,41.22065],[-73.71,40.9311],[-72.24126,41.11948],[-71.945,40.93],[-73.345,40.63],[-73.982,40.628],[-73.95232,40.75075],[-74.25671,40.47351],[-73.96244,40.42763],[-74.17838,39.70926],[-74.90604,38.93954],[-74.98041,39.1964],[-75.20002,39.24845],[-75.52805,39.4985],[-75.32,38.96],[-75.07183,38.78203],[-75.05673,38.40412],[-75.37747,38.01551],[-75.94023,37.21689],[-76.03127,37.2566],[-75.72205,37.93705],[-76.23287,38.31921],[-76.35,39.15],[-76.54272,38.71762],[-76.32933,38.08326],[-76.99,38.23999],[-76.30162,37.91794],[-76.25874,36.9664],[-75.9718,36.89726],[-75.86804,36.55125],[-75.72749,35.55074],[-76.36318,34.80854],[-77.39763,34.51201],[-78.05496,33.92547],[-78.55435,33.86133],[-79.06067,33.49395],[-79.20357,33.15839],[-80.30132,32.50935],[-80.86498,32.0333],[-81.33629,31.44049],[-81.49042,30.72999],[-81.31371,30.03552],[-80.98,29.18],[-80.53558,28.47213],[-80.53,28.04],[-80.05654,26.88],[-80.08801,26.20576],[-80.13156,25.81677],[-80.38103,25.20616],[-80.68,25.08],[-81.17213,25.20126],[-81.33,25.64],[-81.71,25.87],[-82.24,26.73],[-82.70515,27.49504],[-82.85526,27.88624],[-82.65,28.55],[-82.93,29.1],[-83.70959,29.93656],[-84.1,30.09],[-85.10882,29.63615],[-85.28784,29.68612],[-85.7731,30.15261],[-86.4,30.4],[-87.53036,30.27433],[-88.41782,30.3849],[-89.18049,30.31598],[-89.59383,30.15999],[-89.41373,29.89419],[-89.43,29.48864],[-89.21767,29.29108],[-89.40823,29.15961],[-89.77928,29.30714],[-90.15463,29.11743],[-90.88022,29.14854],[-91.62678,29.677],[-92.49906,29.5523],[-93.22637,29.78375],[-93.84842,29.71363],[-94.69,29.48],[-95.60026,28.73863],[-96.59404,28.30748],[-97.14,27.83],[-97.37,27.38],[-97.38,26.69],[-97.33,26.21],[-97.14,25.87],[-97.53,25.84],[-98.24,26.06],[-99.02,26.37],[-99.3,26.84],[-99.52,27.54],[-100.11,28.11],[-100.45584,28.69612],[-100.9576,29.38071],[-101.6624,29.7793],[-102.48,29.76],[-103.11,28.97],[-103.94,29.27],[-104.45697,29.57196],[-104.70575,30.12173],[-105.03737,30.64402],[-105.63159,31.08383],[-106.1429,31.39995],[-106.50759,31.75452],[-108.24,31.75485],[-108.24194,31.34222],[-109.035,31.34194],[-111.02361,31.33472],[-113.30498,32.03914],[-114.815,32.52528],[-114.72139,32.72083],[-115.99135,32.61239],[-117.12776,32.53534],[-117.29594,33.04622],[-117.944,33.62124],[-118.4106,33.74091],[-118.51989,34.02778],[-119.081,34.078],[-119.43884,34.34848],[-120.36778,34.44711],[-120.62286,34.60855],[-120.74433,35.15686],[-121.71457,36.16153],[-122.54747,37.55176],[-122.51201,37.78339],[-122.95319,38.11371],[-123.7272,38.95166],[-123.86517,39.76699],[-124.39807,40.3132],[-124.17886,41.14202],[-124.2137,41.99964],[-124.53284,42.76599],[-124.14214,43.70838],[-124.02053,44.6159],[-123.89893,45.52341],[-124.07963,46.86475],[-124.39567,47.72017],[-124.68721,48.18443],[-124.5661,48.37971],[-123.12,48.04],[-122.58736,47.096],[-122.34,47.36],[-122.5,48.18],[-122.84,49],[-120,49],[-117.03121,49],[-116.04818,49],[-113,49],[-110.05,49],[-107.05,49],[-104.04826,48.99986],[-100.65,49],[-97.22872,49.0007],[-95.15907,49],[-95.15609,49.38425],[-94.81758,49.38905]]],[[[-153.00631,57.11584],[-154.00509,56.73468],[-154.5164,56.99275],[-154.67099,57.4612],[-153.76278,57.81657],[-153.22873,57.96897],[-152.56479,57.90143],[-152.14115,57.59106],[-153.00631,57.11584]]],[[[-165.57916,59.90999],[-166.19277,59.75444],[-166.84834,59.94141],[-167.45528,60.21307],[-166.46779,60.38417],[-165.67443,60.29361],[-165.57916,59.90999]]],[[[-171.73166,63.78252],[-171.11443,63.59219],[-170.49111,63.69498],[-169.68251,63.43112],[-168.68944,63.29751],[-168.77194,63.1886],[-169.52944,62.97693],[-170.29056,63.19444],[-170.67139,63.37582],[-171.55306,63.31779],[-171.79111,63.40585],[-171.73166,63.78252]]],[[[-155.06779,71.14778],[-154.34417,70.69641],[-153.90001,70.88999],[-152.21001,70.82999],[-152.27,70.60001],[-150.73999,70.43002],[-149.72,70.53001],[-147.61336,70.21403],[-145.68999,70.12001],[-144.92001,69.98999],[-143.58945,70.15251],[-142.07251,69.85194],[-140.98599,69.712],[-140.9925,66.00003],[-140.99777,60.3064],[-140.013,60.27684],[-139.039,60.00001],[-138.34089,59.56211],[-137.4525,58.905],[-136.47972,59.46389],[-135.47583,59.78778],[-134.945,59.27056],[-134.27111,58.86111],[-133.35555,58.41029],[-132.73042,57.69289],[-131.70781,56.55212],[-130.00778,55.91583],[-129.97999,55.285],[-130.53611,54.80275],[-131.08582,55.17891],[-131.96721,55.49778],[-132.25001,56.37],[-133.53918,57.17889],[-134.07806,58.12307],[-135.03821,58.18771],[-136.62806,58.21221],[-137.80001,58.5],[-139.86779,59.53776],[-140.82527,59.72752],[-142.57444,60.08445],[-143.95888,59.99918],[-145.92556,60.45861],[-147.11437,60.88466],[-148.22431,60.67299],[-148.01807,59.97833],[-148.57082,59.91417],[-149.72786,59.70566],[-150.60824,59.36821],[-151.71639,59.15582],[-151.85943,59.74498],[-151.40972,60.7258],[-150.34694,61.03359],[-150.62111,61.28442],[-151.89584,60.7272],[-152.57833,60.06166],[-154.01917,59.35028],[-153.28751,58.86473],[-154.23249,58.14637],[-155.30749,57.72779],[-156.30833,57.42277],[-156.5561,56.97998],[-158.11722,56.46361],[-158.43332,55.99415],[-159.60333,55.56669],[-160.28972,55.64358],[-161.22305,55.36473],[-162.23777,55.02419],[-163.06945,54.68974],[-164.78557,54.40417],[-164.94223,54.57222],[-163.84834,55.03943],[-162.87,55.34804],[-161.80417,55.89499],[-160.5636,56.00805],[-160.07056,56.41806],[-158.68444,57.01668],[-158.4611,57.21692],[-157.72277,57.57],[-157.55027,58.32833],[-157.04167,58.91888],[-158.19473,58.6158],[-158.51722,58.78778],[-159.05861,58.42419],[-159.71167,58.93139],[-159.98129,58.57255],[-160.35527,59.07112],[-161.355,58.67084],[-161.96889,58.67166],[-162.05499,59.26693],[-161.87417,59.63362],[-162.51806,59.98972],[-163.81834,59.79806],[-164.66222,60.26748],[-165.34639,60.5075],[-165.35083,61.0739],[-166.12138,61.50002],[-165.73445,62.075],[-164.91918,62.63308],[-164.56251,63.14638],[-163.75333,63.21945],[-163.06722,63.05946],[-162.26056,63.54194],[-161.53445,63.45582],[-160.77251,63.76611],[-160.95834,64.2228],[-161.51807,64.40279],[-160.77778,64.7886],[-161.39193,64.77724],[-162.45305,64.55944],[-162.75779,64.33861],[-163.54639,64.55916],[-164.96083,64.44695],[-166.42529,64.68667],[-166.845,65.0889],[-168.11056,65.67],[-166.70527,66.08832],[-164.47471,66.57666],[-163.65251,66.57666],[-163.7886,66.07721],[-161.67777,66.11612],[-162.48971,66.73557],[-163.71972,67.11639],[-164.43099,67.61634],[-165.39029,68.04277],[-166.76444,68.35888],[-166.20471,68.88303],[-164.43081,68.91554],[-163.16861,69.37111],[-162.93057,69.85806],[-161.9089,70.33333],[-160.9348,70.44769],[-159.03918,70.89164],[-158.11972,70.82472],[-156.58082,71.35776],[-155.06779,71.14778]]]]},\"properties\":{\"name\":\"United States\"}}]}","volume":"23","issue":"10","noUsgsAuthors":false,"publicationDate":"2002-05-01","publicationStatus":"PW","scienceBaseUri":"505bbf4ae4b08c986b329a80","contributors":{"authors":[{"text":"Hooper, R. P.","contributorId":26321,"corporation":false,"usgs":true,"family":"Hooper","given":"R.","email":"","middleInitial":"P.","affiliations":[],"preferred":false,"id":370521,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Peters, N.E.","contributorId":33332,"corporation":false,"usgs":true,"family":"Peters","given":"N.E.","email":"","affiliations":[],"preferred":false,"id":370522,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70014955,"text":"70014955 - 1989 - Isotopic and trace element variations in the Ruby Batholith, Alaska, and the nature of the deep crust beneath the Ruby and Angayucham Terranes","interactions":[],"lastModifiedDate":"2018-10-22T10:43:02","indexId":"70014955","displayToPublicDate":"1989-01-01T00:00:00","publicationYear":"1989","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":"Isotopic and trace element variations in the Ruby Batholith, Alaska, and the nature of the deep crust beneath the Ruby and Angayucham Terranes","docAbstract":"Thirty-six samples from plutons of the Ruby batholith of central Alaska were collected and analyzed for 22 trace elements, and many were analyzed for the isotopic compositions of Sr, Nd, O, and Pb in order to delimit the processes that produced the diversity of granodioritic to granitic compositions, to deduce the nature of the source of magmas at about 110 Ma, and to characterize the deep crust beneath the Ruby and Angayucham terranes. Plutons of the batholith show a substantial range in initial 87Sr/86Sr (SIR) of 0.7055–0.7235 and a general decrease from southwest to northeast. Initial 143Nd/144Nd (NIR) have a range of 0.51150–0.51232 and generally increase from southwest to northeast. The δ18O values for most whole rocks have a range of +8.4 to +11.8 and an average of +10.3‰. Rb, Cs, U, and Th show large ranges of concentration, generally increase as SiO2 increases, and are higher in southwest than in northeast plutons. Sr, Ba, Zr, Hf, Ta, Sc, Cr, Co, and Zr show large ranges of concentration and generally decrease as SiO2 increases. Rare earth elements (REE) show fractionated patterns and negative Eu anomalies. REE concentrations and anomalies are larger in the southwest than in the northeast plutons. Uniformity of SIR and NIR in Sithylemenkat and Jim River plutons suggests a strong role for fractional crystallization or melting of uniform magma sources at depth. Isotopic variability in Melozitna, Ray Mountains, Hot Springs, and Kanuti plutons suggests complex magmatic processes such as magma mixing and assimilation, probably combined with fractional crystallization, or melting of a complex source at depth. The large variations in SIR and NIR in the batholith require a variation in source materials at depth. The southwestern plutons probably had dominantly siliceous sources composed of metamorphosed Proterozoic and Paleozoic upper crustal rocks. The northeastern plutons probably had Paleozoic sources that were mixtures of siliceous and intermediate to mafic crustal rocks. The inferred sources could well have been the higher-metamorphic-grade lithologic equivalents of the exposed Proterozoic(?) to Paleozoic schists, orthogneisses, and metavolcanic rocks of Ruby terrane, the silicic portions of which are quite radiogenic. The deeper crustal sources that gave rise to most of the batholithic magmas are inferred to be similar under both the Ruby metamorphic terrane and the Angayucham ophiolitic terrane.
","language":"English","publisher":"American Geophysical Union","doi":"10.1029/JB094iB11p15941","issn":"01480227","usgsCitation":"Arth, J.G., Zmuda, C.C., Foley, N.K., Criss, R.E., Patton, W.W., and Miller, T.P., 1989, Isotopic and trace element variations in the Ruby Batholith, Alaska, and the nature of the deep crust beneath the Ruby and Angayucham Terranes: Journal of Geophysical Research B: Solid Earth, v. 94, no. B11, p. 15941-15955, https://doi.org/10.1029/JB094iB11p15941.","productDescription":"15 p.","startPage":"15941","endPage":"15955","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":245,"text":"Eastern Mineral and Environmental Resources Science Center","active":true,"usgs":true}],"links":[{"id":224447,"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 -155.9619140625,\n 67.99110834539987\n ],\n [\n -148.0078125,\n 68.00757101804004\n ],\n [\n -146.95312499999997,\n 66.10716955858042\n ],\n [\n -150.97412109375,\n 64.00486735371551\n ],\n [\n -156.02783203124997,\n 64.01449619484472\n ],\n [\n -155.9619140625,\n 67.99110834539987\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"94","issue":"B11","noUsgsAuthors":false,"publicationDate":"2012-09-20","publicationStatus":"PW","scienceBaseUri":"505a3f9ae4b0c8380cd64652","contributors":{"authors":[{"text":"Arth, Joseph G.","contributorId":104546,"corporation":false,"usgs":true,"family":"Arth","given":"Joseph","email":"","middleInitial":"G.","affiliations":[],"preferred":false,"id":369703,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Zmuda, Clara C.","contributorId":91991,"corporation":false,"usgs":true,"family":"Zmuda","given":"Clara","email":"","middleInitial":"C.","affiliations":[],"preferred":false,"id":369702,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Foley, Nora K. 0000-0003-0124-3509 nfoley@usgs.gov","orcid":"https://orcid.org/0000-0003-0124-3509","contributorId":4010,"corporation":false,"usgs":true,"family":"Foley","given":"Nora","email":"nfoley@usgs.gov","middleInitial":"K.","affiliations":[{"id":245,"text":"Eastern Mineral and Environmental Resources Science Center","active":true,"usgs":true}],"preferred":true,"id":369699,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Criss, Robert E.","contributorId":39447,"corporation":false,"usgs":true,"family":"Criss","given":"Robert","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":369698,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Patton, W. W. Jr.","contributorId":11231,"corporation":false,"usgs":true,"family":"Patton","given":"W.","suffix":"Jr.","email":"","middleInitial":"W.","affiliations":[],"preferred":false,"id":369700,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Miller, T. P.","contributorId":49345,"corporation":false,"usgs":true,"family":"Miller","given":"T.","email":"","middleInitial":"P.","affiliations":[],"preferred":false,"id":369701,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}} ,{"id":70014956,"text":"70014956 - 1989 - Load-detention efficiencies in a dry-pond basin","interactions":[],"lastModifiedDate":"2012-03-12T17:18:50","indexId":"70014956","displayToPublicDate":"1989-01-01T00:00:00","publicationYear":"1989","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"Load-detention efficiencies in a dry-pond basin","docAbstract":"Inflow and outflow to a dry-pond detention basin in Topeka, Kansas, were monitored for 19 storms during a 14-month period. Samples of runoff were collected automatically at two inflow and one outflow locations. Inflow and outflow constituent loads were computed with subsequent computation of load-detention efficiencies. Three constituents (dissolved solids, ammonia plus organic nitrogen, and total organic carbon) had negative (larger loads out than in) median detention efficiencies (-78.5 percent, -9.0 percent, and -3.0 percent, respectively). Median detention efficiencies for the other constituents were: suspended solids (2.5 percent), chemical oxygen demand (15.5 percent), nitrite plus nitrate nitrogen (20.0 percent), ammonia nitrogen (69.0 percent), total phosphorus (18.5 percent), dissolved phosphorus (0.0 percent), total lead (66.0 percent), and total zinc (65.0 percent).","conferenceTitle":"Proceedings of an Engineering Foundation Conference on Current Practice and Design Criteria for Urban Quality Control","conferenceDate":"10 July 1988 through 15 July 1988","conferenceLocation":"Potosi, MO, USA","language":"English","publisher":"Publ by ASCE","publisherLocation":"New York, NY, United States","isbn":"0872626954","usgsCitation":"Pope, L.M., and Hess, L.G., 1989, Load-detention efficiencies in a dry-pond basin, Proceedings of an Engineering Foundation Conference on Current Practice and Design Criteria for Urban Quality Control, Potosi, MO, USA, 10 July 1988 through 15 July 1988, p. 258-267.","startPage":"258","endPage":"267","numberOfPages":"10","costCenters":[],"links":[{"id":224448,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a48cee4b0c8380cd6813b","contributors":{"authors":[{"text":"Pope, Larry M.","contributorId":93455,"corporation":false,"usgs":true,"family":"Pope","given":"Larry","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":369705,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Hess, Larry G.","contributorId":91994,"corporation":false,"usgs":true,"family":"Hess","given":"Larry","email":"","middleInitial":"G.","affiliations":[],"preferred":false,"id":369704,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70015505,"text":"70015505 - 1989 - Implementation of a hydrodynamic model for the upper Potomac Estuary","interactions":[],"lastModifiedDate":"2012-03-12T17:18:55","indexId":"70015505","displayToPublicDate":"1989-01-01T00:00:00","publicationYear":"1989","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"Implementation of a hydrodynamic model for the upper Potomac Estuary","docAbstract":"A vertically integrated, two-dimensional hydrodynamic/transport model has been implemented for the upper extent of the Potomac Estuary between Indian Head and Morgantown, Md. The model computes water-surface elevations, flow velocities, and time-varying constituent concentrations by numerically integrating finite-difference forms of the equations of mass and momentum conservation in conjunction with transport equations for heat, salt, and dissolved constituents. Previous, preliminary calibration efforts have been extended and validity of the model implementation improved. Field-measured and model-computed water levels compare within ?? 2 cm and maximum computed flood and ebb flow discharges are within 3% of measured values. Indications are that further improvements can be effected.","conferenceTitle":"Proceedings of the 1989 National Conference on Hydraulic Engineering","conferenceDate":"14 August 1989 through 18 August 1989","conferenceLocation":"New Orleans, LA, USA","language":"English","publisher":"Publ by ASCE","publisherLocation":"New York, NY, United States","isbn":"0872627195","usgsCitation":"Schaffranek, R.W., and Baltzer, R.A., 1989, Implementation of a hydrodynamic model for the upper Potomac Estuary, Proceedings of the 1989 National Conference on Hydraulic Engineering, New Orleans, LA, USA, 14 August 1989 through 18 August 1989, p. 484-492.","startPage":"484","endPage":"492","numberOfPages":"9","costCenters":[],"links":[{"id":224260,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a390ce4b0c8380cd617a7","contributors":{"authors":[{"text":"Schaffranek, Raymond W.","contributorId":86314,"corporation":false,"usgs":true,"family":"Schaffranek","given":"Raymond","email":"","middleInitial":"W.","affiliations":[],"preferred":false,"id":371097,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Baltzer, Robert A.","contributorId":34269,"corporation":false,"usgs":true,"family":"Baltzer","given":"Robert","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":371096,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70015507,"text":"70015507 - 1989 - Groundwater chemistry and water-rock interactions at Stripa","interactions":[],"lastModifiedDate":"2024-04-11T16:16:21.026195","indexId":"70015507","displayToPublicDate":"1989-01-01T00:00:00","publicationYear":"1989","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1759,"text":"Geochimica et Cosmochimica Acta","active":true,"publicationSubtype":{"id":10}},"title":"Groundwater chemistry and water-rock interactions at Stripa","docAbstract":"Groundwaters from near surface to a depth of 1232 m in the Stripa granite have been sampled and analyzed for major and trace constituents. The groundwater composition consists of two general types: a typical recharge water of Ca-HCO3 type (<300 m depth) and a deeper Na-Ca-Cl type (>700 m depth) of high pH (8–10) that reaches a maximum of 1250 mg/L in total dissolved solids (TDS). Intermediate depths show mixtures of the two types that are highly fracture-dependent rather than depth-dependent. Any borehole can vary significantly and erratically in TDS for either a horizontal or vertical direction. The general transition from Ca-HCO3 type to Na-Ca-Cl type correlates with the depth profile for hydraulic conductivity that drops from 10−8 m/s to 10−11 m/s or lower. Thermomechanical stress (from heater experiments) clearly shows an effect on the groundwater composition that could be caused by changing flow paths, leakage of fluid inclusions or both.
Dissolution and precipitation of calcite, fluorite and barite, aluminosilicate hydrolysis, and addition of a saline source (possibly fluid inclusion leakage) play the major roles in defining the groundwater composition. The low permeability of the Stripa granite has produced a groundwater composition that appears intermediate between the dilute, shallow groundwaters typical of recharge in a crystalline rock terrain and the saline waters and brines typical of cratonic shield areas at depth.
Shimada Seamount is a large, young volcanic edifice in the east-central Pacific that is not associated with any active spreading center or known hot spot. The sediments on the abyssal plain surrounding Shimada Seamount consist of pelagic clay with ferromanganese micronodules and zeolites. The pelagic clay is mostly barren of microfossils except for a few occurrences of highly corroded specimens of Radiolaria and diatoms. Eolian terrigenous material is the dominant component of the pelagic clay to a depth of at least 8 m below sea floor, with minor contributions from volcanic debris and hydrothermal and hydrogenous sources. The average amount of basaltic debris is only 0.25%, but concentrations are as high as 10% in some samples. The average hydrothermal component (metalliferous sediment) is 8.8% with a maximum of about 13% at 7.5 m below sea floor in one core. The hydrogenous component, mostly as ferromanganese micronodules, averages 4.1% with a maximum of 5.6%. There is no calcareous biogenic debris and essentially no siliceous biogenic debris. In the past, a decrease in hydrothermal components through time may have been the result of a decrease in relative importance of hydrothermal influences, or an increase in the flux of terrigenous debris transported by the northeast trade winds. Because volcanic activity is still active on Shimada Seamount, or has been in the recent past, the observed increase in relative abundance of terrigenous components probably was the result of increased wind transport and not decreased hydrothermal activity. Shimada Seamount may be an important local source of metalliferous sediment in the eastern equatorial North Pacific, and may have been an even more important source in the past.
","language":"English","publisher":"Elsevier","doi":"10.1016/0016-7037(89)90235-4","issn":"00167037","usgsCitation":"Dean, W., Gardner, J., and Nancy, L.P., 1989, Influence of Shimada Seamount on sediment composition in the eastern tropical North Pacific: Geochimica et Cosmochimica Acta, v. 53, no. 7, p. 1523-1536, https://doi.org/10.1016/0016-7037(89)90235-4.","productDescription":"14 p.","startPage":"1523","endPage":"1536","numberOfPages":"14","costCenters":[],"links":[{"id":224315,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"53","issue":"7","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a3b06e4b0c8380cd6217f","contributors":{"authors":[{"text":"Dean, W.E.","contributorId":97099,"corporation":false,"usgs":true,"family":"Dean","given":"W.E.","email":"","affiliations":[],"preferred":false,"id":371104,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Gardner, J.V.","contributorId":76705,"corporation":false,"usgs":true,"family":"Gardner","given":"J.V.","affiliations":[],"preferred":false,"id":371103,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Nancy, L P.","contributorId":97255,"corporation":false,"usgs":true,"family":"Nancy","given":"L","email":"","middleInitial":"P.","affiliations":[],"preferred":false,"id":371105,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70015509,"text":"70015509 - 1989 - Re-Os, Rb-Sr, and O isotopic systematics of the Archean Kolar schist belt, Karnataka, India","interactions":[],"lastModifiedDate":"2024-04-11T16:29:56.541715","indexId":"70015509","displayToPublicDate":"1989-01-01T00:00:00","publicationYear":"1989","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1759,"text":"Geochimica et Cosmochimica Acta","active":true,"publicationSubtype":{"id":10}},"title":"Re-Os, Rb-Sr, and O isotopic systematics of the Archean Kolar schist belt, Karnataka, India","docAbstract":"The Re-Os, Rb-Sr, and O isotopic compositions of mafic and ultramafic amphibolites, gold ores, and granitic gneisses of the circa 2700 Ma Kolar schist belt reveal at least two episodes of post-magmatic alteration that affected these systems. The Re-Os isotopic systematics of many of the rocks of the belt indicate that Os was introduced to the area via fluids that carried very radiogenic Os (
In contrast to this late Archean or early Proterozoic alteration, samples of several komatiitic amphibolites have very 187Os-depleted compositions, indicating that open-system behavior also occurred at a much later time. This alteration may have been caused by surficial weathering or the interaction of the rocks with fluids bearing unradiogenic Os.
Results suggest that the Re-Os system may have only limited utility for geochronologic applications in regions for which post-crystallization noble metal mineralization is evident (e.g., gold ores). In such regions, however, the system may have an important application in assessing the timing and the ultimate sources of noble metal additions.
","language":"English","publisher":"Elsevier","doi":"10.1016/0016-7037(89)90176-2","issn":"00167037","usgsCitation":"Walker, R., Shirey, S., Hanson, G.N., Rajamani, V., and Horan, M., 1989, Re-Os, Rb-Sr, and O isotopic systematics of the Archean Kolar schist belt, Karnataka, India: Geochimica et Cosmochimica Acta, v. 53, no. 11, p. 3005-3013, https://doi.org/10.1016/0016-7037(89)90176-2.","productDescription":"9 p.","startPage":"3005","endPage":"3013","numberOfPages":"9","costCenters":[],"links":[{"id":479926,"rank":2,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1016/0016-7037(89)90176-2","text":"Publisher Index Page"},{"id":224316,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"53","issue":"11","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a956ce4b0c8380cd819dd","contributors":{"authors":[{"text":"Walker, R.J.","contributorId":105859,"corporation":false,"usgs":true,"family":"Walker","given":"R.J.","email":"","affiliations":[],"preferred":false,"id":371110,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Shirey, S.B.","contributorId":69712,"corporation":false,"usgs":true,"family":"Shirey","given":"S.B.","email":"","affiliations":[],"preferred":false,"id":371106,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Hanson, G. N.","contributorId":81152,"corporation":false,"usgs":true,"family":"Hanson","given":"G.","email":"","middleInitial":"N.","affiliations":[],"preferred":false,"id":371109,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Rajamani, V.","contributorId":71703,"corporation":false,"usgs":true,"family":"Rajamani","given":"V.","email":"","affiliations":[],"preferred":false,"id":371107,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Horan, M.F.","contributorId":75282,"corporation":false,"usgs":true,"family":"Horan","given":"M.F.","email":"","affiliations":[],"preferred":false,"id":371108,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}} ,{"id":70014970,"text":"70014970 - 1989 - Replacement of native oak and hickory tree species by the introduced American chestnut (Castanea dentata) in southwestern Wisconsin","interactions":[],"lastModifiedDate":"2023-09-01T15:57:51.477365","indexId":"70014970","displayToPublicDate":"1989-01-01T00:00:00","publicationYear":"1989","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1167,"text":"Canadian Journal of Botany","active":true,"publicationSubtype":{"id":10}},"displayTitle":"Replacement of native oak and hickory tree species by the introduced American chestnut (Castanea dentata) in southwestern Wisconsin","title":"Replacement of native oak and hickory tree species by the introduced American chestnut (Castanea dentata) in southwestern Wisconsin","docAbstract":"American chestnut was introduced at West Salem, Wisconsin, about 1880 and had begun to replace native tree species in adjacent oak-hickory woodland before 1930. Chestnut is now an important canopy species over about 20 ha of forested ridge extending north and south of the original plantation. A smaller area of less than 5 ha is dominated by chestnut in both the canopy and understory. Chestnut seedlings and small saplings are more numerous along woodland edges and in recently disturbed soil, they are rare in the interior of ungrazed pasture and entirely absent from intensively grazed areas adjacent to chestnut-dominated woodland. Random sampling of recently established seedlings indicates that from 1 to 5 seedlings/(year ∙ ha) became established in undisturbed woodland between 1986 and 1988. The general pattern of chestnut distribution indicates the importance of woodland edges in chestnut propagation and the effects of livestock grazing in excluding chestnut. Replacement of native species by chestnut appears to have occurred in two steps: isolated groups of trees became established at favorable locations, after which many additional chestnut stems became established in the understory. The recent discovery and treatment of blight indicates that the West Salem site may not be available for study of blight-free chestnut in the future.
","language":"English","publisher":"Canadian Science Publishing","doi":"10.1139/b89-423","usgsCitation":"Paillet, F.L., and Rutter, P.A., 1989, Replacement of native oak and hickory tree species by the introduced American chestnut (Castanea dentata) in southwestern Wisconsin: Canadian Journal of Botany, v. 67, no. 12, p. 3457-3469, https://doi.org/10.1139/b89-423.","productDescription":"13 p.","startPage":"3457","endPage":"3469","numberOfPages":"13","costCenters":[],"links":[{"id":223793,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Wisconsin","city":"West Salem","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -91.11817186649428,\n 43.91748868890505\n ],\n [\n -91.11817186649428,\n 43.882689259108986\n ],\n [\n -91.0566142548254,\n 43.882689259108986\n ],\n [\n -91.0566142548254,\n 43.91748868890505\n ],\n [\n -91.11817186649428,\n 43.91748868890505\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","volume":"67","issue":"12","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505aa754e4b0c8380cd8535b","contributors":{"authors":[{"text":"Paillet, Frederick L.","contributorId":63820,"corporation":false,"usgs":true,"family":"Paillet","given":"Frederick","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":369739,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Rutter, P. A.","contributorId":82464,"corporation":false,"usgs":true,"family":"Rutter","given":"P.","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":369740,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70014971,"text":"70014971 - 1989 - Discharge of sediment in channelized alluvial streams","interactions":[],"lastModifiedDate":"2013-02-19T14:23:16","indexId":"70014971","displayToPublicDate":"1989-01-01T00:00:00","publicationYear":"1989","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3718,"text":"Water Resources Bulletin","printIssn":"0043-1370","active":true,"publicationSubtype":{"id":10}},"title":"Discharge of sediment in channelized alluvial streams","docAbstract":"Approximately 400 million cubic feet of channel sediments have been delivered to the Mississippi River from the Obion-Forked Deer River system in the last 20 years. The discharge of sediment from these channelized networks in West Tennessee varies systematically with the stage of channel evolution. Maximum bed-material discharges occur during the initial phases of degradation (Stage III). In contrast, yields of suspended-sediment peak during the threshold stage (Stage IV: large-scale mass wasting) as sediments are delivered from main-channel banks and tributary beds. Suspended-sediment yields then decrease as aggradation (Stage V) becomes the dominant trend in the main channels, but remains relatively high through restabilization (Stage VI) because of continued degradation and widening in the tributaries. Bed-material discharges decrease from the degradation stage (III) to Stage V, and increase again during restabilization (Stage VI) because secondary aggradation increases gradients and incipient meandering serves to rework bed sediments. Additional aspects of the subject are discussed.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Water Resources Bulletin","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"American Water Resources Association","doi":"10.1111/j.1752-1688.1989.tb01330.x","issn":"00431370","usgsCitation":"Simon, A., 1989, Discharge of sediment in channelized alluvial streams: Water Resources Bulletin, v. 25, no. 6, p. 1177-1188, https://doi.org/10.1111/j.1752-1688.1989.tb01330.x.","startPage":"1177","endPage":"1188","numberOfPages":"12","costCenters":[],"links":[{"id":267746,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1111/j.1752-1688.1989.tb01330.x"},{"id":223794,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"25","issue":"6","noUsgsAuthors":false,"publicationDate":"2007-06-08","publicationStatus":"PW","scienceBaseUri":"505a01e2e4b0c8380cd4fd90","contributors":{"authors":[{"text":"Simon, Andrew","contributorId":78334,"corporation":false,"usgs":true,"family":"Simon","given":"Andrew","email":"","affiliations":[],"preferred":false,"id":369741,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70015198,"text":"70015198 - 1989 - Molluscan extinction patterns across the Cenomanian-Turonian Stage boundary in the western interior of the United States","interactions":[],"lastModifiedDate":"2025-06-05T16:20:54.232199","indexId":"70015198","displayToPublicDate":"1989-01-01T00:00:00","publicationYear":"1989","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3001,"text":"Paleobiology","active":true,"publicationSubtype":{"id":10}},"title":"Molluscan extinction patterns across the Cenomanian-Turonian Stage boundary in the western interior of the United States","docAbstract":"High-resolution stratigraphic analysis of 18 sections spanning the Cenomanian–Turonian Stage boundary in the western interior of the United States has allowed determination of the magnitude and pattern of molluscan extinction and disruption. Composite range data from all sections show that the faunal turnover across the stage boundary occurs in a series of narrow stratigraphic zones, defined by multiple first and last occurrences, separated by intervals displaying little or no taxonomic turnover. Two of the apparent extinction steps (bottom and top of the Neocardioceras juddii Zone) may be intercontinentally developed. The additional steps apparently reflect cyclic changes in water mass and substrate characteristics in the western interior basin produced in response to orbital forcing of climate. An interval (ca. 10-100 k.y. duration) of changing community structure and general biotic deterioration is found below each of the two potentially intercontinentally developed extinction steps. The most affected mollusks were those having intercontinental distributions (ammonites and inoceramid bivalves), suggesting that disruption of planktotrophic larval dispersal may have played a role in increasing extinction and speciation rates near the C–T boundary. The nekto-benthic ammonites were affected earlier and to a greater degree than the pelagic forms, implying progressive upward expansion of the oxygen minimum zone preceding the stage boundary.
","language":"English","publisher":"Cambridge University Press","doi":"10.1017/S0094837300009465","issn":"00948373","usgsCitation":"Elder, W., 1989, Molluscan extinction patterns across the Cenomanian-Turonian Stage boundary in the western interior of the United States: Paleobiology, v. 15, no. 3, p. 299-320, https://doi.org/10.1017/S0094837300009465.","productDescription":"22 p.","startPage":"299","endPage":"320","numberOfPages":"22","costCenters":[],"links":[{"id":223589,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"15","issue":"3","noUsgsAuthors":false,"publicationDate":"2016-04-08","publicationStatus":"PW","scienceBaseUri":"505a5d1ce4b0c8380cd7017e","contributors":{"authors":[{"text":"Elder, W.P.","contributorId":65467,"corporation":false,"usgs":true,"family":"Elder","given":"W.P.","email":"","affiliations":[],"preferred":false,"id":370304,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70015584,"text":"70015584 - 1989 - Robustness of disaggregate oil and gas discovery forecasting models","interactions":[],"lastModifiedDate":"2013-03-01T15:27:35","indexId":"70015584","displayToPublicDate":"1989-01-01T00:00:00","publicationYear":"1989","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2682,"text":"Marine and Petroleum Geology","active":true,"publicationSubtype":{"id":10}},"title":"Robustness of disaggregate oil and gas discovery forecasting models","docAbstract":"The trend in forecasting oil and gas discoveries has been to develop and use models that allow forecasts of the size distribution of future discoveries. From such forecasts, exploration and development costs can more readily be computed. Two classes of these forecasting models are the Arps-Roberts type models and the 'creaming method' models. This paper examines the robustness of the forecasts made by these models when the historical data on which the models are based have been subject to economic upheavals or when historical discovery data are aggregated from areas having widely differing economic structures. Model performance is examined in the context of forecasting discoveries for offshore Texas State and Federal areas. The analysis shows how the model forecasts are limited by information contained in the historical discovery data. Because the Arps-Roberts type models require more regularity in discovery sequence than the creaming models, prior information had to be introduced into the Arps-Roberts models to accommodate the influence of economic changes. The creaming methods captured the overall decline in discovery size but did not easily allow introduction of exogenous information to compensate for incomplete historical data. Moreover, the predictive log normal distribution associated with the creaming model methods appears to understate the importance of the potential contribution of small fields. ?? 1989.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Marine and Petroleum Geology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"Elsevier","doi":"10.1016/0264-8172(89)90006-8","issn":"02648172","usgsCitation":"Attanasi, E.D., and Schuenemeyer, J., 1989, Robustness of disaggregate oil and gas discovery forecasting models: Marine and Petroleum Geology, v. 6, no. 3, p. 270-276, https://doi.org/10.1016/0264-8172(89)90006-8.","startPage":"270","endPage":"276","numberOfPages":"7","costCenters":[],"links":[{"id":268650,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/0264-8172(89)90006-8"},{"id":223944,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"6","issue":"3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505aade0e4b0c8380cd86fb5","contributors":{"authors":[{"text":"Attanasi, E. D. 0000-0001-6845-7160","orcid":"https://orcid.org/0000-0001-6845-7160","contributorId":107672,"corporation":false,"usgs":true,"family":"Attanasi","given":"E.","middleInitial":"D.","affiliations":[],"preferred":false,"id":371302,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Schuenemeyer, J.H.","contributorId":106094,"corporation":false,"usgs":true,"family":"Schuenemeyer","given":"J.H.","affiliations":[],"preferred":false,"id":371301,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ]}