Since the adoption of a Regional Development Plan in 1975, the Atlanta Regional Commission has investigated methods for monitoring regional development patterns in a periodic, efficient manner. A promising approach appears to be the use of Landsat satellite data. In cooperation with the Earth Resources Observation Systems (EROS) Data Center, the commission used machine processing of digital temporal overlays of Landsat data collected in 1972, 1974 and 1976 to detect land use and land cover changes in the Atlanta metropolitan area. Results of the analysis revealed the conversion of forested and open space areas to residential, commercial and industrial land use in the urban-rural fringe zone from 1972 to 1974 and from 1974 to 1976. The study indicated that a land use and land cover change-detection program may be used to revise small-area forecasts of land use, population and employment made by planning models.
","language":"English","publisher":"American Institute of Planners","publisherLocation":"Washington, D.C.","usgsCitation":"Todd, W.J., Blackmon, C., and Rudasill, R., 1979, Satellites monitor Atlanta regional development: Practicing Planner, v. 9, no. 1, p. 6-10.","productDescription":"5 p.","startPage":"6","endPage":"10","numberOfPages":"5","costCenters":[{"id":222,"text":"Earth Resources Observation and Science (EROS) Center","active":true,"usgs":true}],"links":[{"id":288574,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"state":"Georgia","city":"Atlanta","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -84.551819,33.647808 ], [ -84.551819,33.887618 ], [ -84.289389,33.887618 ], [ -84.289389,33.647808 ], [ -84.551819,33.647808 ] ] ] } } ] }","volume":"9","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"539acc14e4b0e83db6d08feb","contributors":{"authors":[{"text":"Todd, William J.","contributorId":51595,"corporation":false,"usgs":true,"family":"Todd","given":"William","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":494726,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Blackmon, C.C.","contributorId":63321,"corporation":false,"usgs":true,"family":"Blackmon","given":"C.C.","email":"","affiliations":[],"preferred":false,"id":494728,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Rudasill, R.G. Jr.","contributorId":62525,"corporation":false,"usgs":true,"family":"Rudasill","given":"R.G.","suffix":"Jr.","email":"","affiliations":[],"preferred":false,"id":494727,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70174588,"text":"70174588 - 1979 - A two-dimensional hydrodynamic model of a tidal estuary","interactions":[],"lastModifiedDate":"2016-07-27T15:43:25","indexId":"70174588","displayToPublicDate":"1980-01-01T00:00:00","publicationYear":"1979","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":664,"text":"Advances in Water Resources","active":true,"publicationSubtype":{"id":10}},"title":"A two-dimensional hydrodynamic model of a tidal estuary","docAbstract":"A finite element model is described which is used in the computation of tidal currents in an estuary. This numerical model is patterned after an existing algorithm and has been carefully tested in rectangular and curve-sided channels with constant and variable depth. One of the common uncertainties in this class of two-dimensional hydrodynamic models is the treatment of the lateral boundary conditions. Special attention is paid specifically to addressing this problem. To maintain continuity within the domain of interest, ‘smooth’ curve-sided elements must be used at all shoreline boundaries. The present model uses triangular, isoparametric elements with quadratic basis functions for the two velocity components and a linear basis function for water surface elevation. An implicit time integration is used and the model is unconditionally stable. The resultant governing equations are nonlinear owing to the advective and the bottom friction terms and are solved iteratively at each time step by the Newton-Raphson method. Model test runs have been made in the southern portion of San Francisco Bay, California (South Bay) as well as in the Bay west of Carquinez Strait. Owing to the complex bathymetry, the hydrodynamic characteristics of the Bay system are dictated by the generally shallow basins which contain deep, relict river channels. Great care must be exercised to ensure that the conservation equations remain locally as well as globally accurate. Simulations have been made over several representative tidal cycles using this finite element model, and the results compare favourably with existing data. In particular, the standing wave in South Bay and the progressive wave in the northern reach are well represented.
","language":"English","publisher":"Elsevier","doi":"10.1016/0309-1708(79)90033-2","usgsCitation":"Walters, R.A., and Cheng, R.T., 1979, A two-dimensional hydrodynamic model of a tidal estuary: Advances in Water Resources, v. 2, p. 177-184, https://doi.org/10.1016/0309-1708(79)90033-2.","productDescription":"8 p.","startPage":"177","endPage":"184","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":325192,"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 \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -122.61291503906249,\n 37.385435182627226\n ],\n [\n -122.61291503906249,\n 38.23170796744926\n ],\n [\n -121.61865234375,\n 38.23170796744926\n ],\n [\n -121.61865234375,\n 37.385435182627226\n ],\n [\n -122.61291503906249,\n 37.385435182627226\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5787662ce4b0d27deb36e16f","contributors":{"authors":[{"text":"Walters, Roy A.","contributorId":74877,"corporation":false,"usgs":true,"family":"Walters","given":"Roy","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":642384,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Cheng, Ralph T.","contributorId":69134,"corporation":false,"usgs":true,"family":"Cheng","given":"Ralph","email":"","middleInitial":"T.","affiliations":[],"preferred":false,"id":642385,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70207179,"text":"70207179 - 1979 - Geodolite measurements of deformation near Hollister, California, 1971-1978","interactions":[],"lastModifiedDate":"2020-06-01T12:45:44.044545","indexId":"70207179","displayToPublicDate":"1979-12-11T13:00:52","publicationYear":"1979","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":"Geodolite measurements of deformation near Hollister, California, 1971-1978","docAbstract":"A 24‐station trilateration network spanning the San Andreas and Calaveras faults near Hollister, California, has been surveyed each year between 1971 and 1978, inclusive. Two moderate (ML = 5) earthquakes have occurred within the network during the interval. No convincing preseismic or coseismic anomalies associated with those earthquakes have been identified. The deformation of the network can be described roughly by rigid body motion of the three blocks bounded by the two faults with accommodation occurring by right‐lateral strike slip on the San Andreas (13±2 mm/a) and Calaveras (17±2 mm/a) faults. The required slip rates are within the range of the observed fault creep on those faults. A more detailed analysis of the deformation indicates appreciable strain accumulation (0.4 μstrain/a tensor shear) within the block lying between the San Andreas and Calaveras faults. Many of the features of the observed deformation can be produced by an elementary dislocation model, indicating that most of the deformation is associated directly with slip on the major faults. The network is not extensive enough to define uniquely the relative motion across the San Andreas fault system, but the data are consistent with a value of about 38 mm/a. The rate of deformation in 1971–1978 was not uniform but rather appears to have been higher than normal in 1973–1974 and lower than normal in 1975–1976.
","language":"English","publisher":"American Geophysical Union","doi":"10.1029/JB084iB13p07599","usgsCitation":"Savage, J.C., Prescott, W., Lisowski, M., and King, N., 1979, Geodolite measurements of deformation near Hollister, California, 1971-1978: Journal of Geophysical Research B: Solid Earth, v. 84, no. B13, p. 7599-7615, https://doi.org/10.1029/JB084iB13p07599.","productDescription":"17 p.","startPage":"7599","endPage":"7615","costCenters":[{"id":237,"text":"Earthquake Science Center","active":true,"usgs":true},{"id":617,"text":"Volcano Science Center","active":true,"usgs":true}],"links":[{"id":370161,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"California","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -121.728515625,\n 36.59788913307022\n ],\n [\n -120.673828125,\n 36.59788913307022\n ],\n [\n -120.673828125,\n 37.16031654673677\n ],\n [\n -121.728515625,\n 37.16031654673677\n ],\n [\n -121.728515625,\n 36.59788913307022\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"84","issue":"B13","noUsgsAuthors":false,"publicationDate":"2012-12-07","publicationStatus":"PW","contributors":{"authors":[{"text":"Savage, James C. 0000-0002-5114-7673 jasavage@usgs.gov","orcid":"https://orcid.org/0000-0002-5114-7673","contributorId":2412,"corporation":false,"usgs":true,"family":"Savage","given":"James","email":"jasavage@usgs.gov","middleInitial":"C.","affiliations":[{"id":237,"text":"Earthquake Science Center","active":true,"usgs":true}],"preferred":true,"id":777163,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Prescott, W.H.","contributorId":96337,"corporation":false,"usgs":true,"family":"Prescott","given":"W.H.","email":"","affiliations":[],"preferred":false,"id":777164,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Lisowski, Michael 0000-0003-4818-2504 mlisowski@usgs.gov","orcid":"https://orcid.org/0000-0003-4818-2504","contributorId":637,"corporation":false,"usgs":true,"family":"Lisowski","given":"Michael","email":"mlisowski@usgs.gov","affiliations":[{"id":617,"text":"Volcano Science Center","active":true,"usgs":true},{"id":615,"text":"Volcano Hazards Program","active":true,"usgs":true}],"preferred":true,"id":777165,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"King, N.","contributorId":14925,"corporation":false,"usgs":true,"family":"King","given":"N.","affiliations":[],"preferred":false,"id":777166,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70207178,"text":"70207178 - 1979 - Deformation across the Salton Trough, California, 1973-1977","interactions":[],"lastModifiedDate":"2020-06-01T12:44:57.468727","indexId":"70207178","displayToPublicDate":"1979-12-11T12:44:01","publicationYear":"1979","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":"Deformation across the Salton Trough, California, 1973-1977","docAbstract":"A trilateration network extending across the San Andreas, San Jacinto, and Elsinore faults in the vicinity of the Salton Sea, California, has been surveyed to very high precision several times in the 5‐year interval 1973–1977. The average strain across the entire network is essentially a uniaxial north‐south contraction at the rate of about 0.3 μstrain/a. There is no substantial strain perpendicular to the Salton trough, indicating no tendency to either open or close that rift. The observed uniaxial north‐south contraction differs from a pure shear parallel to the major faults by a uniform dilatation of about −0.25 μstrain/a that is only partly explained. The shear strain across the network reaches a maximum near the San Jacinto fault and could be explained by right lateral slip at depth on that fault. The displacement pattern also suggests right lateral slip at depth on the San Jacinto fault with total right lateral relative movement near 50 mm/a across the 120‐km breadth of the network. The deformation appears to be uniform in time in the 1973–1977 interval. A dislocation model of the deformation suggests about 50±15 mm/a of relative right lateral slip at depth distributed between the San Andreas, San Jacinto, and Elsinore faults and demonstrates that a significant average dilatation can be generated by pure strike slip on several subparallel faults.
","language":"English","publisher":"American Geophysical Union","doi":"10.1029/JB084iB06p03069","usgsCitation":"Savage, J.C., Prescott, W., Lisowski, M., and King, N., 1979, Deformation across the Salton Trough, California, 1973-1977: Journal of Geophysical Research B: Solid Earth, v. 84, no. B6, p. 3069-3079, https://doi.org/10.1029/JB084iB06p03069.","productDescription":"11 p.","startPage":"3069","endPage":"3079","costCenters":[{"id":237,"text":"Earthquake Science Center","active":true,"usgs":true},{"id":617,"text":"Volcano Science Center","active":true,"usgs":true}],"links":[{"id":370160,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"California","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -117.18017578125,\n 32.43561304116276\n ],\n [\n -115.26855468749999,\n 32.43561304116276\n ],\n [\n -115.26855468749999,\n 33.97980872872457\n ],\n [\n -117.18017578125,\n 33.97980872872457\n ],\n [\n -117.18017578125,\n 32.43561304116276\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"84","issue":"B6","noUsgsAuthors":false,"publicationDate":"2012-09-20","publicationStatus":"PW","contributors":{"authors":[{"text":"Savage, James C. 0000-0002-5114-7673 jasavage@usgs.gov","orcid":"https://orcid.org/0000-0002-5114-7673","contributorId":2412,"corporation":false,"usgs":true,"family":"Savage","given":"James","email":"jasavage@usgs.gov","middleInitial":"C.","affiliations":[{"id":237,"text":"Earthquake Science Center","active":true,"usgs":true}],"preferred":true,"id":777159,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Prescott, W.H.","contributorId":96337,"corporation":false,"usgs":true,"family":"Prescott","given":"W.H.","email":"","affiliations":[],"preferred":false,"id":777160,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Lisowski, Michael 0000-0003-4818-2504 mlisowski@usgs.gov","orcid":"https://orcid.org/0000-0003-4818-2504","contributorId":637,"corporation":false,"usgs":true,"family":"Lisowski","given":"Michael","email":"mlisowski@usgs.gov","affiliations":[{"id":617,"text":"Volcano Science Center","active":true,"usgs":true},{"id":615,"text":"Volcano Hazards Program","active":true,"usgs":true}],"preferred":true,"id":777161,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"King, N.","contributorId":14925,"corporation":false,"usgs":true,"family":"King","given":"N.","affiliations":[],"preferred":false,"id":777162,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70120084,"text":"70120084 - 1979 - Managing the rippling stream: decisionmaking in natural resource administration","interactions":[],"lastModifiedDate":"2014-08-12T09:57:15","indexId":"70120084","displayToPublicDate":"1979-12-01T09:54:57","publicationYear":"1979","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2529,"text":"Journal of the American Water Resources Association","active":true,"publicationSubtype":{"id":10}},"title":"Managing the rippling stream: decisionmaking in natural resource administration","docAbstract":"This article addresses the conflict which exists within the water resources decisionmaking arena over the allocation of water for instream uses. The discussion reviews the literature on public administration regarding decisionmaking, and is based on research performed by the authors which synthesizes a model of decisionmaking. This model can be used as both a description of agency behavior, and as the basis for developing a prescription for strategy formulation.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of the American Water Resources Association","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"American Water Resources Association","publisherLocation":"Herndon, VA","doi":"10.1111/j.1752-1688.1979.tb01182.x","usgsCitation":"Doerksen, H.R., and Lamb, B., 1979, Managing the rippling stream: decisionmaking in natural resource administration: Journal of the American Water Resources Association, v. 15, no. 6, p. 1707-1715, https://doi.org/10.1111/j.1752-1688.1979.tb01182.x.","productDescription":"9 p.","startPage":"1707","endPage":"1715","numberOfPages":"9","costCenters":[],"links":[{"id":291996,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":291995,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1111/j.1752-1688.1979.tb01182.x"}],"volume":"15","issue":"6","noUsgsAuthors":false,"publicationDate":"2007-06-08","publicationStatus":"PW","scienceBaseUri":"53eb2a7ee4b0461e44764a70","contributors":{"authors":[{"text":"Doerksen, Harvey R.","contributorId":25476,"corporation":false,"usgs":true,"family":"Doerksen","given":"Harvey","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":497886,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Lamb, Berton L.","contributorId":24009,"corporation":false,"usgs":true,"family":"Lamb","given":"Berton L.","affiliations":[],"preferred":false,"id":497885,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70119908,"text":"70119908 - 1979 - Robust estimation of population size when capture probabilities vary among animals","interactions":[],"lastModifiedDate":"2014-08-11T13:58:05","indexId":"70119908","displayToPublicDate":"1979-10-01T13:52:29","publicationYear":"1979","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1465,"text":"Ecology","active":true,"publicationSubtype":{"id":10}},"title":"Robust estimation of population size when capture probabilities vary among animals","docAbstract":"A model is given for multiple recapture studies on closed populations which allows capture probabilities to vary among individuals. The capture probability of each individual is assumed to be constant over time. Based on this model we give a nonparametric estimation procedure for population size. The estimator involves selecting one of a sequence of estimator which are each linear combinations of the capture frequencies. The individual estimators are derived from the generalized jackknife method. We also give a goodness of fit test for the model's assumption that individual capture probabilities do not change during the study. The robustness of the estimation procedure is investigated with a simulation study. By virtue of this study, and the theoretical nature of the estimator, it is judged to be robust to moderate variations in individual capture probabilities which may occur in commonly used short-term livetrapping studies.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Ecology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"Ecological Society of America","publisherLocation":"Brooklyn, NY","doi":"10.2307/1936861","usgsCitation":"Burnham, K., and Overton, W., 1979, Robust estimation of population size when capture probabilities vary among animals: Ecology, v. 60, no. 5, p. 927-936, https://doi.org/10.2307/1936861.","productDescription":"10 p.","startPage":"927","endPage":"936","numberOfPages":"10","costCenters":[],"links":[{"id":291966,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":291965,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.2307/1936861"}],"volume":"60","issue":"5","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"53e9d8d4e4b008eaa4f3f68e","contributors":{"authors":[{"text":"Burnham, K.P.","contributorId":63760,"corporation":false,"usgs":true,"family":"Burnham","given":"K.P.","email":"","affiliations":[],"preferred":false,"id":497859,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Overton, W.S.","contributorId":47488,"corporation":false,"usgs":true,"family":"Overton","given":"W.S.","email":"","affiliations":[],"preferred":false,"id":497858,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70012530,"text":"70012530 - 1979 - Simulated changes in potentiometric levels resulting from groundwater development for phosphate mines, west-central Florida","interactions":[],"lastModifiedDate":"2025-04-10T16:38:22.145099","indexId":"70012530","displayToPublicDate":"1979-10-01T00:00:00","publicationYear":"1979","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2342,"text":"Journal of Hydrology","active":true,"publicationSubtype":{"id":10}},"title":"Simulated changes in potentiometric levels resulting from groundwater development for phosphate mines, west-central Florida","docAbstract":"A digital model of two-dimensional groundwater flow was used to predict changes in the potentiometric surface of the Floridan aquifer resulting from groundwater development for proposed and existing phosphate mines during 1976-2000. The modeled area covers 15,379 km2in west-central Florida.
In 1975, groundwater withdrawn from the Floridan aquifer for irrigation, phosphate mines, other industries and municipal supplies averaged about 28,500 1/s. Withdrawals for phosphate mines are expected to shift from Polk County to adjacent counties to the south and west, and to decline from about 7,620 1/s in 1975 to about 7,060 1/s in 2000.
The model was calibrated under steady-state and transient conditions. Input parameters included aquifer transmissivity and storage coefficient; thickness, vertical hydraulic conductivity, and storage coefficient of the upper confining bed; altitudes of the water table and potentiometric surface; and groundwater withdrawals.
Simulation of November 1976 to October 2000, using projected combined pumping rates for existing and proposed phosphate mines, resulted in a rise in the potentiometric surface of about 6 m in Polk County, and a decline of about 4 m in parts of Manatee and Hardee counties.
","language":"English","publisher":"Elsevier","doi":"10.1016/S0167-5648(09)70034-6","issn":"00221694","usgsCitation":"Wilson, W., and Gerhart, J.M., 1979, Simulated changes in potentiometric levels resulting from groundwater development for phosphate mines, west-central Florida: Journal of Hydrology, v. 43, no. 1-4, p. 491-515, https://doi.org/10.1016/S0167-5648(09)70034-6.","productDescription":"25 p.","startPage":"491","endPage":"515","costCenters":[],"links":[{"id":221828,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Florida","otherGeospatial":"west-central Florida","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -82.65993890446225,\n 27.823062786062707\n ],\n [\n -82.65993890446225,\n 27.417356611278876\n ],\n [\n -81.64909608630823,\n 27.417356611278876\n ],\n [\n -81.64909608630823,\n 27.823062786062707\n ],\n [\n -82.65993890446225,\n 27.823062786062707\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","volume":"43","issue":"1-4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505b8f86e4b08c986b318fa3","contributors":{"authors":[{"text":"Wilson, W.E.","contributorId":100831,"corporation":false,"usgs":true,"family":"Wilson","given":"W.E.","email":"","affiliations":[],"preferred":false,"id":363830,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Gerhart, J. M.","contributorId":12855,"corporation":false,"usgs":true,"family":"Gerhart","given":"J.","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":363829,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70012494,"text":"70012494 - 1979 - Contribution of groundwater modeling to planning","interactions":[],"lastModifiedDate":"2025-04-10T16:56:14.014137","indexId":"70012494","displayToPublicDate":"1979-10-01T00:00:00","publicationYear":"1979","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2342,"text":"Journal of Hydrology","active":true,"publicationSubtype":{"id":10}},"title":"Contribution of groundwater modeling to planning","docAbstract":"The consideration of groundwater in water-resource planning frequently has been neglected because many planners believed that groundwater could not be adequately evaluated in terms of availability, quality, cost of development, or effect of development on the surface-water supply. The development of predictive groundwater models now provides the water planner with tools to evaluate these problems. Highly sophisticated digital models can be used in planning the development of groundwater and the conjunctive use of ground- and surface water. About 250 digital models have been used to evaluate groundwater problems: The models are powerful tools for predicting the response of groundwater systems to stresses. They can also clarify the cause and progress of past stresses. With these developments it is now possible to integrate the utilization of groundwater into water-resource planning with a high degree of confidence.
","language":"English","publisher":"Elsevier","doi":"10.1016/0022-1694(79)90168-9","issn":"00221694","usgsCitation":"Moore, J., 1979, Contribution of groundwater modeling to planning: Journal of Hydrology, v. 43, no. 1-4, p. 121-128, https://doi.org/10.1016/0022-1694(79)90168-9.","productDescription":"8 p.","startPage":"121","endPage":"128","costCenters":[],"links":[{"id":222258,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"43","issue":"1-4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059fa82e4b0c8380cd4db3a","contributors":{"authors":[{"text":"Moore, J.E.","contributorId":34927,"corporation":false,"usgs":true,"family":"Moore","given":"J.E.","email":"","affiliations":[],"preferred":false,"id":363748,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70237065,"text":"70237065 - 1979 - Distributary channels, sand lobes, and mesotopography of Navy Submarine Fan, California Borderland, with applications to ancient fan sediments","interactions":[],"lastModifiedDate":"2022-09-29T11:52:51.189043","indexId":"70237065","displayToPublicDate":"1979-09-29T06:44:27","publicationYear":"1979","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3369,"text":"Sedimentology","active":true,"publicationSubtype":{"id":10}},"title":"Distributary channels, sand lobes, and mesotopography of Navy Submarine Fan, California Borderland, with applications to ancient fan sediments","docAbstract":"The deep-tow instrument package of Scripps Institution of Oceanography provides a unique opportunity to delineate small-scale features of a size comparable to those features usually described from ancient deep-sea fan deposits. On Navy Fan, the deep-tow side-scanning sonar readily detected steep channel walls and steps and terraces within channels. The most striking features observed in side-scan are large crescentic depressions commonly occurring in groups. These appear to be large scours or flutes carved by turbidity currents. Four distinct acoustic facies were mapped on the basis of qualitative assessment of reflectivity of 4 kHz reflection profiles. There is a distinct increase in depth of acoustic penetration, number of sub-bottom reflectors, and reflector continuity from the upper fan-valley to the lower fan. These changes are accompanied by a decrease in surface relief.
Navy Fan is made up of three active sectors. The active upper fan is dominated by a single channel with prominent levees that decrease in height downstream. The active mid-fan region or suprafan is where sand is deposited. Well defined distributary channels with steps, terraces, and other mesotopography terminate in depositional lobes. Interchannel areas are rough, containing giant scours as well as other relief. The active lower fan accumulates mud and silt and is without resolvable surface morphology.
The morphological features seen on Navy Fan other than levees, interchannel areas, and lobes are principally erosional. The distributary channels are up to 0.5 km wide and 5–15 m deep. Such features, because of their large size and low relief, are rarely completely exposed or easily detectable in ancient rock sequences. Some flute-shaped scours are larger than channels in cross section but many are 5-30 m across and 1-2 m deep. If observed in ancient rocks transverse to palaeo-current direction, they would perhaps be indistinguishable from channels. Surface sediment distribution combined with fan morphology can be used to relate modern sediments to facies models for ancient fan sediments. Gravel and sand occur in the upper valley, massive sand beds in the mid-fan distributary channels, classical complete Bouma sequences on depositional lobes, incomplete Bouma sequences (lacking division a) on the lower mid-fan, and Bouma sequence with lenticular shape or other limited extent on mid-fan interchannel areas and on levees.
","language":"English","publisher":"Wiley","doi":"10.1111/j.1365-3091.1979.tb00971.x","usgsCitation":"Normark, W., Piper, D., and Hess, G.R., 1979, Distributary channels, sand lobes, and mesotopography of Navy Submarine Fan, California Borderland, with applications to ancient fan sediments: Sedimentology, v. 26, no. 6, p. 749-774, https://doi.org/10.1111/j.1365-3091.1979.tb00971.x.","productDescription":"25 p.","startPage":"749","endPage":"774","costCenters":[],"links":[{"id":407565,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"California","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -118.87207031250001,\n 32.24997445586331\n ],\n [\n -114.3017578125,\n 32.24997445586331\n ],\n [\n -114.3017578125,\n 34.161818161230386\n ],\n [\n -118.87207031250001,\n 34.161818161230386\n ],\n [\n -118.87207031250001,\n 32.24997445586331\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"26","issue":"6","noUsgsAuthors":false,"publicationDate":"2006-06-14","publicationStatus":"PW","contributors":{"authors":[{"text":"Normark, William","contributorId":33052,"corporation":false,"usgs":true,"family":"Normark","given":"William","affiliations":[],"preferred":false,"id":853226,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Piper, D.J.W.","contributorId":17351,"corporation":false,"usgs":false,"family":"Piper","given":"D.J.W.","email":"","affiliations":[{"id":7219,"text":"Natural Resources Canada","active":true,"usgs":false}],"preferred":false,"id":853230,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Hess, Gordon R.","contributorId":102119,"corporation":false,"usgs":true,"family":"Hess","given":"Gordon","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":853231,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70012222,"text":"70012222 - 1979 - Earthquakes near Parkfield, California: Comparing the 1934 and 1966 sequences","interactions":[],"lastModifiedDate":"2026-01-13T16:58:49.661941","indexId":"70012222","displayToPublicDate":"1979-09-28T00:00:00","publicationYear":"1979","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3338,"text":"Science","active":true,"publicationSubtype":{"id":10}},"title":"Earthquakes near Parkfield, California: Comparing the 1934 and 1966 sequences","docAbstract":"Moderate-sized earthquakes (Richter magnitude ML 5 1/2) have occurred four times this century (1901, 1922, 1934, and 1966) on the San Andreas fault near Parkfield in central California. In many respects the June 1966 sequence was a remarkably detailed repetition of the June 1934 sequence, suggesting a recurring recognizable pattern of stress and fault zone behavior.","language":"English","publisher":"American Association for the Advancement of Science","doi":"10.1126/science.205.4413.1375","issn":"00368075","usgsCitation":"Bakun, W.H., and McEvilly, T., 1979, Earthquakes near Parkfield, California: Comparing the 1934 and 1966 sequences: Science, v. 205, no. 4413, p. 1375-1377, https://doi.org/10.1126/science.205.4413.1375.","productDescription":"3 p.","startPage":"1375","endPage":"1377","costCenters":[],"links":[{"id":222527,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"California","city":"Parkfield","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -120.46018920313436,\n 35.91924841319678\n ],\n [\n -120.46018920313436,\n 35.886490437485804\n ],\n [\n -120.40915302292922,\n 35.886490437485804\n ],\n [\n -120.40915302292922,\n 35.91924841319678\n ],\n [\n -120.46018920313436,\n 35.91924841319678\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","volume":"205","issue":"4413","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a0528e4b0c8380cd50c9c","contributors":{"authors":[{"text":"Bakun, W. H.","contributorId":67055,"corporation":false,"usgs":true,"family":"Bakun","given":"W.","email":"","middleInitial":"H.","affiliations":[],"preferred":false,"id":363019,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"McEvilly, T.V.","contributorId":30631,"corporation":false,"usgs":true,"family":"McEvilly","given":"T.V.","email":"","affiliations":[],"preferred":false,"id":363018,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70120099,"text":"70120099 - 1979 - A parametric generalization of the Hayne estimator for line transect sampling","interactions":[],"lastModifiedDate":"2014-08-12T11:06:40","indexId":"70120099","displayToPublicDate":"1979-09-01T11:03:23","publicationYear":"1979","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1039,"text":"Biometrics","active":true,"publicationSubtype":{"id":10}},"title":"A parametric generalization of the Hayne estimator for line transect sampling","docAbstract":"The Hayne model for line transect sampling is generalized by using an elliptical (rather than circular) flushing model for animal detection. By assuming the ration of major and minor axes lengths is constant for all animals, a model results which allows estimation of population density based directly upon sighting distances and sighting angles. The derived estimator of animal density is a generalization of the Hayne estimator for line transect sampling.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Biometrics","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"International Biometric Society","publisherLocation":"Washington, D.C.","doi":"10.2307/2530249","usgsCitation":"Burnham, K.P., 1979, A parametric generalization of the Hayne estimator for line transect sampling: Biometrics, v. 35, no. 3, p. 587-595, https://doi.org/10.2307/2530249.","productDescription":"9 p.","startPage":"587","endPage":"595","numberOfPages":"9","costCenters":[],"links":[{"id":292012,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":292011,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.2307/2530249"}],"volume":"35","issue":"3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"53eb2a4ee4b0461e4476499f","contributors":{"authors":[{"text":"Burnham, Kenneth P.","contributorId":95025,"corporation":false,"usgs":true,"family":"Burnham","given":"Kenneth","email":"","middleInitial":"P.","affiliations":[{"id":189,"text":"Colorado Cooperative Fish and Wildlife Research Unit","active":false,"usgs":true}],"preferred":false,"id":497908,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70120098,"text":"70120098 - 1979 - Nonparametric estimation of plant density by the distance method","interactions":[],"lastModifiedDate":"2014-08-12T10:56:11","indexId":"70120098","displayToPublicDate":"1979-09-01T10:50:15","publicationYear":"1979","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1039,"text":"Biometrics","active":true,"publicationSubtype":{"id":10}},"title":"Nonparametric estimation of plant density by the distance method","docAbstract":"A relation between the plant density and the probability density function of the nearest neighbor distance (squared) from a random point is established under fairly broad conditions. Based upon this relationship, a nonparametric estimator for the plant density is developed and presented in terms of order statistics. Consistency and asymptotic normality of the estimator are discussed. An interval estimator for the density is obtained. The modifications of this estimator and its variance are given when the distribution is truncated. Simulation results are presented for regular, random and aggregated populations to illustrate the nonparametric estimator and its variance. A numerical example from field data is given. Merits and deficiencies of the estimator are discussed with regard to its robustness and variance.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Biometrics","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"International Biometric Society","publisherLocation":"Washington, D.C.","doi":"10.2307/2530250","usgsCitation":"Patil, S., Burnham, K., and Kovner, J., 1979, Nonparametric estimation of plant density by the distance method: Biometrics, v. 35, no. 3, p. 597-604, https://doi.org/10.2307/2530250.","productDescription":"8 p.","startPage":"597","endPage":"604","numberOfPages":"8","costCenters":[],"links":[{"id":292010,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":292009,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.2307/2530250"}],"volume":"35","issue":"3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"53eb2a83e4b0461e44764a89","contributors":{"authors":[{"text":"Patil, S.A.","contributorId":38479,"corporation":false,"usgs":true,"family":"Patil","given":"S.A.","email":"","affiliations":[],"preferred":false,"id":497905,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Burnham, K.P.","contributorId":63760,"corporation":false,"usgs":true,"family":"Burnham","given":"K.P.","email":"","affiliations":[],"preferred":false,"id":497906,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Kovner, J.L.","contributorId":65395,"corporation":false,"usgs":true,"family":"Kovner","given":"J.L.","email":"","affiliations":[],"preferred":false,"id":497907,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70012281,"text":"70012281 - 1979 - Oil and gas in offshore tracts: Estimates before and after drilling","interactions":[],"lastModifiedDate":"2026-01-14T16:17:09.421088","indexId":"70012281","displayToPublicDate":"1979-08-03T00:00:00","publicationYear":"1979","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3338,"text":"Science","active":true,"publicationSubtype":{"id":10}},"title":"Oil and gas in offshore tracts: Estimates before and after drilling","docAbstract":"Estimates of volumes of recoverable hydrocarbons underlying offshore tracts are made by the U.S. Geological Survey prior to the sale of leases and after drilling on those leases. Comparisons of these estimates show a moderate positive correlation and no evidence for relative bias, although the precision of the predictions is quite limited.
","language":"English","publisher":"American Association for the Advancement of Science","doi":"10.1126/science.205.4405.489","issn":"00368075","usgsCitation":"Uman, M., James, W., and Tomlinson, H., 1979, Oil and gas in offshore tracts: Estimates before and after drilling: Science, v. 205, no. 4405, p. 489-491, https://doi.org/10.1126/science.205.4405.489.","productDescription":"3 p.","startPage":"489","endPage":"491","costCenters":[],"links":[{"id":222404,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"205","issue":"4405","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a6ce2e4b0c8380cd74e5b","contributors":{"authors":[{"text":"Uman, M.F.","contributorId":45459,"corporation":false,"usgs":true,"family":"Uman","given":"M.F.","email":"","affiliations":[],"preferred":false,"id":363175,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"James, W.R.","contributorId":92425,"corporation":false,"usgs":true,"family":"James","given":"W.R.","email":"","affiliations":[],"preferred":false,"id":363176,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Tomlinson, H.R.","contributorId":28750,"corporation":false,"usgs":true,"family":"Tomlinson","given":"H.R.","email":"","affiliations":[],"preferred":false,"id":363174,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70199455,"text":"70199455 - 1979 - Risk preferences and flood insurance","interactions":[],"lastModifiedDate":"2023-02-22T17:18:39.066589","indexId":"70199455","displayToPublicDate":"1979-08-01T15:06:11","publicationYear":"1979","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":5747,"text":"American Journal of Agricultural Economics","active":true,"publicationSubtype":{"id":10}},"title":"Risk preferences and flood insurance","docAbstract":"A detailed theoretical model characterizing the individual's decision to purchase flood insurance is specified and the magnitude of the risk parameter is estimated using data based on transactions of flood insurance purchases. Empirical results for several samples of this subset of the general population indicated that consumers exhibited a relatively uniform degree of risk aversion across various localities where different hydrologic and economic conditions prevailed. While the estimates presented should not be directly extrapolated to the entire population located in a flood prone area, they provide evidence that parameters determining an individual's and/or community's willingness to pay for flood protection can be measured.
","language":"English","publisher":"Wiley","doi":"10.2307/1239435","usgsCitation":"Attanasi, E., and Karlinger, M.R., 1979, Risk preferences and flood insurance: American Journal of Agricultural Economics, v. 61, no. 3, p. 490-495, https://doi.org/10.2307/1239435.","productDescription":"6 p.","startPage":"490","endPage":"495","costCenters":[{"id":241,"text":"Eastern Energy Resources Science Center","active":true,"usgs":true}],"links":[{"id":357449,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"61","issue":"3","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Attanasi, Emil D. 0000-0001-6845-7160 attanasi@usgs.gov","orcid":"https://orcid.org/0000-0001-6845-7160","contributorId":198728,"corporation":false,"usgs":true,"family":"Attanasi","given":"Emil D.","email":"attanasi@usgs.gov","affiliations":[{"id":241,"text":"Eastern Energy Resources Science Center","active":true,"usgs":true}],"preferred":true,"id":745391,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Karlinger, Michael R.","contributorId":10777,"corporation":false,"usgs":true,"family":"Karlinger","given":"Michael","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":745392,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70199492,"text":"70199492 - 1979 - Nature of firm expectations in petroleum exploration","interactions":[],"lastModifiedDate":"2018-09-20T15:26:19","indexId":"70199492","displayToPublicDate":"1979-08-01T11:43:54","publicationYear":"1979","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2598,"text":"Land Economics","active":true,"publicationSubtype":{"id":10}},"title":"Nature of firm expectations in petroleum exploration","docAbstract":"Recent interest in the state of the United States domestic petroleum industry has resulted in an increased concern regarding the ability of current large- scale econometric models to provide useful predictions about supply price sensitivity and about the effects of differing policy options on future supply. The petroleum industry's exploration and reserve response functions appear to have eluded traditional modeling approaches. Properties of firm exploration behavior are obscured when highly aggregated data are used. Data pertaining to different geographical areas are frequently combined using dummy variables to denote characteristics peculiar to a region. In these models price tends to be more related to the quality of the crude oil than to incremental costs of exploration and development of individual deposits. The effect of price changes on expected supplies is clearly moderated by the level of resource depletion for a particular basin. A major obstacle to carrying out a less aggregated analysis has been the lack of data on specific basins, but another obstacle has been the belief that field behavior is too erratic to model successful.
","language":"English","publisher":"University of Wisconsin Press","doi":"10.2307/3145904","usgsCitation":"Attanasi, E., 1979, Nature of firm expectations in petroleum exploration: Land Economics, v. 55, no. 3, p. 299-312, https://doi.org/10.2307/3145904.","productDescription":"14 p.","startPage":"299","endPage":"312","costCenters":[{"id":241,"text":"Eastern Energy Resources Science Center","active":true,"usgs":true}],"links":[{"id":357490,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"55","issue":"3","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Attanasi, Emil D. 0000-0001-6845-7160 attanasi@usgs.gov","orcid":"https://orcid.org/0000-0001-6845-7160","contributorId":198728,"corporation":false,"usgs":true,"family":"Attanasi","given":"Emil D.","email":"attanasi@usgs.gov","affiliations":[{"id":241,"text":"Eastern Energy Resources Science Center","active":true,"usgs":true}],"preferred":true,"id":745575,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":5221474,"text":"5221474 - 1979 - Uptake of methoxychlor from food and water by the American toad (Bufo americanus)","interactions":[],"lastModifiedDate":"2020-09-01T23:05:15.012581","indexId":"5221474","displayToPublicDate":"1979-06-16T12:19:14","publicationYear":"1979","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1103,"text":"Bulletin of Environmental Contamination and Toxicology","active":true,"publicationSubtype":{"id":10}},"displayTitle":"Uptake of methoxychlor from food and water by the American toad (Bufo americanus)","title":"Uptake of methoxychlor from food and water by the American toad (Bufo americanus)","docAbstract":"Various studies (Mulla et al. 1963; Ferguson and Gilbert 1967; Cooke 1973) have examined the effects of pesticides on anuran amphibians, but the routes of contaminant uptake by transformed amphibians have not been evaluated. The need of frogs and toads to imbibe water from natural surface water would seem to make them vulnerable to uptake from this source. Fish are known to accumulate pesticides from both food and water (Jarvinen et al. 1977). Toads are more terrestrial and tend to lose water less readily than most other amphibians (Thorson and Svihla 1943); hence they should he a conservative estimator of the potential for uptake of pesticides from water. Methoxychlor is an analogue of DDT and has been widely used to replace it. It is a good model of many pesticides in current use in its low persistence in animal tissues (Gardner and Bailey 1975), and its long half life in water (Wolfe et al. 1977). It is also suitable for study because of its relatively low toxicity to amphibians (Kaplan and Overpeck 1964) and its easily detected residues. In the present study we measured the accumulation of methoxychlor from food and water in a preliminary evaluation of the two routes of exposure.
Marine magnetic data have been available for many years from all of the world's oceans, and their contribution to marine geophysics and geology is profound. These data, for example, have allowed charting the age of the ocean floor, reconstruction of the geologic history of the major ocean basins, development of a Cenozoic and Mesozoic timescale of geomagnetic reversals, and speculation on the processes of sea‐floor spreading. Research on these and similar problems actively continued during this quadrennial, but here we discuss only a few topics in which we believe the most significant advances have been made during the last four years: the source of marine magnetic anomalies, the geomagnetic time‐scale, high‐amplitude anomalies, and studies of back‐arc basins.
Source of Anomalies
Studies of magnetic surveys over continental areas can often be constrained by the magnetic properties of samples collected from below the survey. Until recently, model studies of marine magnetic anomalies have enjoyed the luxury of an inaccessible source. Except for samples scraped from the ocean floor by dredging [e.g., Irving, 1970] and inferences drawn from magnetic studies of ophiolite sequences [e.g., Vine and Moores, 1972], very little information was available for constraining studies of marine magnetic anomalies.
","language":"English","publisher":"Wiley","doi":"10.1029/RG017i002p00204","usgsCitation":"Blakely, R.J., and Cande, S., 1979, Marine magnetic anomalies: Reviews of Geophysics, v. 17, no. 2, p. 204-214, https://doi.org/10.1029/RG017i002p00204.","productDescription":"11 p.","startPage":"204","endPage":"214","costCenters":[{"id":312,"text":"Geology, Minerals, Energy, and Geophysics Science Center","active":true,"usgs":true}],"links":[{"id":374269,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"17","issue":"2","noUsgsAuthors":false,"publicationDate":"2010-06-14","publicationStatus":"PW","contributors":{"authors":[{"text":"Blakely, Richard J. 0000-0003-1701-5236 blakely@usgs.gov","orcid":"https://orcid.org/0000-0003-1701-5236","contributorId":1540,"corporation":false,"usgs":true,"family":"Blakely","given":"Richard","email":"blakely@usgs.gov","middleInitial":"J.","affiliations":[{"id":662,"text":"Western Mineral and Environmental Resources Science Center","active":true,"usgs":true},{"id":312,"text":"Geology, Minerals, Energy, and Geophysics Science Center","active":true,"usgs":true}],"preferred":true,"id":787939,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Cande, S.C.","contributorId":190243,"corporation":false,"usgs":false,"family":"Cande","given":"S.C.","email":"","affiliations":[],"preferred":false,"id":787940,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":1014095,"text":"1014095 - 1979 - Characterization of EV-2, a virus isolated from European eels (Anguilla anguilla) with stomatopapilloma","interactions":[],"lastModifiedDate":"2025-02-26T23:07:57.340976","indexId":"1014095","displayToPublicDate":"1979-04-01T00:00:00","publicationYear":"1979","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2497,"text":"Journal of Virology","active":true,"publicationSubtype":{"id":10}},"title":"Characterization of EV-2, a virus isolated from European eels (Anguilla anguilla) with stomatopapilloma","docAbstract":"A virus designated EV-2 has been isolated from external tumor tissue and internal organs of European eels (Anguilla anguilla) with stomatopapilloma. It contains RNA and is ether, acid, and temperature labile above 4°C, and concentrated preparations agglutinate chicken and sheep erythrocytes. The addition of actinomycin D during the first 2.75 h of infection inhibits viral replication. As determined in sucrose gradients, the buoyant density of the virus is 1.19 g/cm3. EV-2 has a moderately pleomorphic spherical morphology; its diameter ranges from 80 to 140 nm. The virion has narrow, regularly spaced surface projections about 10 nm long. Replication in FHM cells at 15°C shows new infectivity appearing at 10 h postinfection and reaching a plateau at 20 h. Cytopathic effects consist of cell fusion, syncytia, and irregularly rounded cell masses. Viral antigen was detected in the cytoplasm of infected cells by specific immunofluorescence.
","language":"English","publisher":"American Society for Microbiology","doi":"10.1128/jvi.30.1.358-364.1979","usgsCitation":"Nagabayashi, T., and Wolf, K., 1979, Characterization of EV-2, a virus isolated from European eels (Anguilla anguilla) with stomatopapilloma: Journal of Virology, v. 30, no. 1, p. 358-364, https://doi.org/10.1128/jvi.30.1.358-364.1979.","productDescription":"7 p.","startPage":"358","endPage":"364","costCenters":[{"id":365,"text":"Leetown Science Center","active":true,"usgs":true}],"links":[{"id":487172,"rank":2,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1128/jvi.30.1.358-364.1979","text":"Publisher Index Page"},{"id":129578,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"30","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e49e2e4b07f02db5e4e5d","contributors":{"authors":[{"text":"Nagabayashi, T.","contributorId":14347,"corporation":false,"usgs":true,"family":"Nagabayashi","given":"T.","email":"","affiliations":[],"preferred":false,"id":319778,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Wolf, K.","contributorId":16344,"corporation":false,"usgs":true,"family":"Wolf","given":"K.","email":"","affiliations":[],"preferred":false,"id":319779,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70200527,"text":"70200527 - 1979 - Altitude-age relationships of the lunar maria","interactions":[],"lastModifiedDate":"2018-10-23T09:41:20","indexId":"70200527","displayToPublicDate":"1979-03-23T09:40:33","publicationYear":"1979","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"Altitude-age relationships of the lunar maria","docAbstract":"Altitudes and relative ages of mare surface units were compared to test if a systematic correlation in height of lava eruption surfaces and age might reflect a corresponding increase in depth of the magma chamber with time; in addition the altitudes were studied to shed light on the time and place of warping of mare surfaces. The laser altimeter data from the Apollo missions and relative age data based on crater erosion models and crater counts were used for the study. The data were correlated by using the image data bank of the Lunar Geoscience Consortium. Results of the first part of the study are inconclusive as no systematic increase in height of lavas with time could be shown. The data of the second part of the study support the conclusion that mare surfaces may have warped throughout most of the time represented by sample ages from the Apollo missions, and that the lithosphere may have become strong enough to remain stable after the time of Apollo 12 samples around 3 b.y. ago.
","largerWorkType":{"id":24,"text":"Conference Paper"},"largerWorkSubtype":{"id":19,"text":"Conference Paper"},"conferenceTitle":"Lunar and Planetary Science Conference","conferenceDate":"March 19-23, 1979","conferenceLocation":"Houston, TX","language":"English","usgsCitation":"Lucchitta, B.K., and Boyce, J.M., 1979, Altitude-age relationships of the lunar maria, Lunar and Planetary Science Conference, Houston, TX, March 19-23, 1979, p. 2957-2966.","productDescription":"12 p.","startPage":"2957","endPage":"2966","costCenters":[{"id":131,"text":"Astrogeology Science Center","active":true,"usgs":true}],"links":[{"id":358657,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":358656,"rank":1,"type":{"id":15,"text":"Index Page"},"url":"https://ntrs.nasa.gov/search.jsp?R=19800039559"}],"noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Lucchitta, Baerbel K. blucchitta@usgs.gov","contributorId":3649,"corporation":false,"usgs":true,"family":"Lucchitta","given":"Baerbel","email":"blucchitta@usgs.gov","middleInitial":"K.","affiliations":[],"preferred":true,"id":749372,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Boyce, J. M.","contributorId":85952,"corporation":false,"usgs":true,"family":"Boyce","given":"J.","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":749373,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70012512,"text":"70012512 - 1979 - Strain-softening instability model for the San Fernando earthquake","interactions":[],"lastModifiedDate":"2026-01-15T15:52:20.690393","indexId":"70012512","displayToPublicDate":"1979-03-02T00:00:00","publicationYear":"1979","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3338,"text":"Science","active":true,"publicationSubtype":{"id":10}},"title":"Strain-softening instability model for the San Fernando earthquake","docAbstract":"Changes in the ground elevation observed before and immediately after the 1971 San Fernando, California, earthquake are consistent with a theoretical model in which fault zone rocks are strain-softening after peak stress. The model implies that the slip rate of the fault increased to about 0.1 meter per year near the focus before the earthquake.","language":"English","publisher":"American Association for the Advancement of Science","doi":"10.1126/science.203.4383.907","issn":"00368075","usgsCitation":"Stuart, W., 1979, Strain-softening instability model for the San Fernando earthquake: Science, v. 203, no. 4383, p. 907-910, https://doi.org/10.1126/science.203.4383.907.","productDescription":"4 p.","startPage":"907","endPage":"910","costCenters":[],"links":[{"id":222539,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"California","city":"San Fernando","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -118.53912891536814,\n 34.34103388270246\n ],\n [\n -118.53912891536814,\n 34.243679362653964\n ],\n [\n -118.3563134212664,\n 34.243679362653964\n ],\n [\n -118.3563134212664,\n 34.34103388270246\n ],\n [\n -118.53912891536814,\n 34.34103388270246\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","volume":"203","issue":"4383","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505b989be4b08c986b31c0c6","contributors":{"authors":[{"text":"Stuart, W.D.","contributorId":65865,"corporation":false,"usgs":true,"family":"Stuart","given":"W.D.","email":"","affiliations":[],"preferred":false,"id":363788,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70208415,"text":"70208415 - 1979 - Modern biogenic gas-generated craters (sea-floor “pockmarks”) on the Bering Shelf, Alaska","interactions":[],"lastModifiedDate":"2021-05-27T14:47:43.002387","indexId":"70208415","displayToPublicDate":"1979-02-07T13:57:15","publicationYear":"1979","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1723,"text":"GSA Bulletin","active":true,"publicationSubtype":{"id":10}},"title":"Modern biogenic gas-generated craters (sea-floor “pockmarks”) on the Bering Shelf, Alaska","docAbstract":"As many as 1,340 small craters per square kilometre cover the sea floor of Norton Sound in the northeastern Bering Sea. The craters are circular pits, 1 to 10 m in diameter and less than 1 m deep, observed on sonographs over 20,000 km2 of northern Norton Sound sea floor. Craters typically are associated with acoustic anomalies, near-surface peaty mud, and gas-charged sediment.
The peaty mud is a thick (>1.5 m), nonmarine pre-Holocene deposit that is now covered by a 1- to 3-m-thick layer of Holocene marine mud in the area of the craters. The peaty mud (2% to 8% organic carbon) contains abundant biogenic methane [C1/(C2 + C3) = 256 to 7,669] with carbon isotope (δ13C) values of −69‰ to −75‰- Decomposition of organic debris in the peaty mud apparently charges the mud with gas. The peaty and gassy zones attenuate sound waves and cause acoustic anomalies on high-resolution seismic profiles in the area with craters.
The craters are forming now, as shown by the disruption of modern ice gouges by the craters. In the absence of storms, the gas apparently is trapped in the peaty mud in a saturated state by the cover of Holocene mud. Periodically, possibly during storms, the gas escapes through the thin Holocene cover and forms craters.
","language":"English","publisher":"Geological Society of America","doi":"10.1130/0016-7606(1979)90<1144:MBGCSP>2.0.CO;2","usgsCitation":"Hans, N.C., Thor, D., Sandstrom, M.W., and Kvenvolden, K.A., 1979, Modern biogenic gas-generated craters (sea-floor “pockmarks”) on the Bering Shelf, Alaska: GSA Bulletin, v. 90, no. 12, p. 1144-1152, https://doi.org/10.1130/0016-7606(1979)90<1144:MBGCSP>2.0.CO;2.","productDescription":"9 p.","startPage":"1144","endPage":"1152","costCenters":[{"id":452,"text":"National Water Quality Laboratory","active":true,"usgs":true},{"id":520,"text":"Pacific Coastal and Marine Science Center","active":true,"usgs":true}],"links":[{"id":372149,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Alaska","otherGeospatial":"Bering Shelf","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -171.73828125,\n 62.75472592723178\n ],\n [\n -160.0048828125,\n 62.75472592723178\n ],\n [\n -160.0048828125,\n 65.93751437423593\n ],\n [\n -171.73828125,\n 65.93751437423593\n ],\n [\n -171.73828125,\n 62.75472592723178\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"90","issue":"12","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Hans, Nelson C.","contributorId":26072,"corporation":false,"usgs":true,"family":"Hans","given":"Nelson","email":"","middleInitial":"C.","affiliations":[],"preferred":false,"id":781782,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Thor, D.R.","contributorId":79521,"corporation":false,"usgs":true,"family":"Thor","given":"D.R.","email":"","affiliations":[],"preferred":false,"id":781783,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Sandstrom, Mark W. 0000-0003-0006-5675 sandstro@usgs.gov","orcid":"https://orcid.org/0000-0003-0006-5675","contributorId":706,"corporation":false,"usgs":true,"family":"Sandstrom","given":"Mark","email":"sandstro@usgs.gov","middleInitial":"W.","affiliations":[{"id":452,"text":"National Water Quality Laboratory","active":true,"usgs":true},{"id":503,"text":"Office of Water Quality","active":true,"usgs":true},{"id":37464,"text":"WMA - Laboratory & Analytical Services Division","active":true,"usgs":true},{"id":5046,"text":"Branch of Analytical Serv (NWQL)","active":true,"usgs":true}],"preferred":true,"id":781784,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Kvenvolden, Keith A. kkvenvolden@usgs.gov","contributorId":3384,"corporation":false,"usgs":true,"family":"Kvenvolden","given":"Keith","email":"kkvenvolden@usgs.gov","middleInitial":"A.","affiliations":[{"id":520,"text":"Pacific Coastal and Marine Science Center","active":true,"usgs":true}],"preferred":true,"id":781785,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70231444,"text":"70231444 - 1979 - Digital image processing system For Landsat 3","interactions":[],"lastModifiedDate":"2022-05-10T17:37:52.451391","indexId":"70231444","displayToPublicDate":"1979-01-01T12:20:19","publicationYear":"1979","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"Digital image processing system For Landsat 3","docAbstract":"The Department of Interior (DOI) and the National Aeronautics and Space Administration (NASA) have entered into a joint program to provide a digital image processing system in support of the Landsat 3 mission. NASA will provide the data reception and pre-processing facilities, while the DOI provides the production image processing system that generates film products and computer compatible tapes for users. The system procured by the DOI's U.S. Geological Survey was installed at the Earth Resources Observation System Data Center (EDC) in Sioux Falls, South Dakota. The EDC Digital Image Processing System (EDIPS) is capable of operating in standard or special formats. During 13 hours of operation, the system can process up to 200 five-band Multispectral Scanner (MSS) scenes and 160 Return Beam Vidicon (RBV) subscenes in the standard mode plus up to 60 scenes/subscenes in the special-order mode. The input media for the system are High Density Tapes (HDT's) generated by NASA's Goddard Space Flight Center (GSFC). These tapes contain two types of data: those that have been radiometrically and geometrically corrected with resampling of the data to fit a known map projection, and those that have been radiometrically corrected but have not been geometrically corrected or resampled. The system can provide 185 mm (MSS) and 198 mm (RBV) black and white film products for each MSS band or RBV subscene via a high resolution laser beam recorder. The CCT's generated by the system are compatible with the HDT format, and are available either in Band Sequential (BSQ) or Band Interleaved by Line (BIL) data. This paper will present both an overview of the total NASA/DOI system and a detailed discussion of the EDC Digital Image Processing System that is installed at the USGS facility in Sioux Falls, South Dakota.
","largerWorkType":{"id":4,"text":"Book"},"largerWorkTitle":"Proceedings volume 0183, Space Optics II","largerWorkSubtype":{"id":12,"text":"Conference publication"},"conferenceTitle":"1979 Huntsville Technical Symposium","conferenceDate":"September 27, 1979","conferenceLocation":"Huntsville, Alabama, United States","language":"English","publisher":"Society of Photo-Optical Instrumentation Engineers","doi":"10.1117/12.957420","usgsCitation":"Harris, G., 1979, Digital image processing system For Landsat 3, in Proceedings volume 0183, Space Optics II, v. 183, Huntsville, Alabama, United States, September 27, 1979, p. 235-254, https://doi.org/10.1117/12.957420.","productDescription":"20 p.","startPage":"235","endPage":"254","costCenters":[{"id":222,"text":"Earth Resources Observation and Science (EROS) Center","active":true,"usgs":true}],"links":[{"id":400442,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"South Dakota","city":"Sioux Falls","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -96.85478210449219,\n 43.47883342917123\n ],\n [\n -96.60690307617188,\n 43.47883342917123\n ],\n [\n -96.60690307617188,\n 43.64750394449096\n ],\n [\n -96.85478210449219,\n 43.64750394449096\n ],\n [\n -96.85478210449219,\n 43.47883342917123\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"183","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Harris, George Jr.","contributorId":291592,"corporation":false,"usgs":false,"family":"Harris","given":"George","suffix":"Jr.","email":"","affiliations":[],"preferred":false,"id":842626,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":2000104,"text":"2000104 - 1979 - Modeling sandhill crane population dynamics","interactions":[],"lastModifiedDate":"2012-02-02T00:15:00","indexId":"2000104","displayToPublicDate":"1979-01-01T01:00:00","publicationYear":"1979","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":1,"text":"Federal Government Series"},"seriesTitle":{"id":83,"text":"Special Scientific Report - Wildlife","active":false,"publicationSubtype":{"id":1}},"seriesNumber":"222","title":"Modeling sandhill crane population dynamics","docAbstract":"The impact of sport hunting on the Central Flyway population of sandhill cranes (Grus canadensis) has been a subject of controversy for several years. A recent study (Buller 1979) presented new and important information on sandhill crane population dynamics. The present report is intended to incorporate that and other information into a mathematical model for the purpose of assessing the long-range impact of hunting on the population of sandhill cranes.The model is a simple deterministic system that embodies density-dependent rates of survival and recruitment. The model employs four kinds of data: (1) spring population size of sandhill cranes, estimated from aerial surveys to be between 250,000 and 400,000 birds; (2) age composition in fall, estimated for 1974-76 to be 11.3% young; (3) annual harvest of cranes, estimated from a variety of sources to be about 5 to 7% of the spring population; and (4) age composition of harvested cranes, which was difficult to estimate but suggests that immatures were 2 to 4 times as vulnerable to hunting as adults.Because the true nature of sandhill crane population dynamics remains so poorly understood, it was necessary to try numerous (768 in all) combinations of survival and recruitment functions, and focus on the relatively few (37) that yielded population sizes and age structures comparable to those extant in the real population. Hunting was then applied to those simulated populations. In all combinations, hunting resulted in a lower asymptotic crane population, the decline ranging from 5 to 54%. The median decline was 22%, which suggests that a hunted sandhill crane population might be about three-fourths as large as it would be if left unhunted. Results apply to the aggregate of the three subspecies in the Central Flyway; individual subspecies or populations could be affected to a greater or lesser degree.","language":"English","publisher":"U.S. Fish and Wildlife Service","publisherLocation":"Washington, DC","usgsCitation":"Johnson, D.H., 1979, Modeling sandhill crane population dynamics: Special Scientific Report - Wildlife 222, 10 pp.","productDescription":"10 pp.","startPage":"0","endPage":"10","costCenters":[{"id":480,"text":"Northern Prairie Wildlife Research Center","active":true,"usgs":true}],"links":[{"id":198487,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":112209,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://hdl.handle.net/2027/coo.31924055486892?urlappend=%3Bseq=277"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4b02e4b07f02db698a64","contributors":{"authors":[{"text":"Johnson, Douglas H. 0000-0002-7778-6641","orcid":"https://orcid.org/0000-0002-7778-6641","contributorId":70327,"corporation":false,"usgs":true,"family":"Johnson","given":"Douglas","email":"","middleInitial":"H.","affiliations":[],"preferred":false,"id":325093,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70012304,"text":"70012304 - 1979 - An evaluation of the zircon method of isotopic dating in the Southern Arabian Craton","interactions":[{"subject":{"id":7126,"text":"ofr791187 - 1979 - An evaluation of the zircon method of isotopic dating in the southern Arabian Craton, Kingdom of Saudi Arabia","indexId":"ofr791187","publicationYear":"1979","noYear":false,"title":"An evaluation of the zircon method of isotopic dating in the southern Arabian Craton, Kingdom of Saudi Arabia"},"predicate":"SUPERSEDED_BY","object":{"id":70012304,"text":"70012304 - 1979 - An evaluation of the zircon method of isotopic dating in the Southern Arabian Craton","indexId":"70012304","publicationYear":"1979","noYear":false,"title":"An evaluation of the zircon method of isotopic dating in the Southern Arabian Craton"},"id":1}],"lastModifiedDate":"2013-06-28T11:21:51","indexId":"70012304","displayToPublicDate":"1979-01-01T00:00:00","publicationYear":"1979","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1336,"text":"Contributions to Mineralogy and Petrology","active":true,"publicationSubtype":{"id":10}},"title":"An evaluation of the zircon method of isotopic dating in the Southern Arabian Craton","docAbstract":"A zircon study has been made on eleven samples of igneous rocks from the Saudi Arabian Craton. Ages of sized and magnetic fractions of zircon concentrates show variable degrees of discordance which seem to result from a very young disturbance that produces linear arrays in the Concordia plot. Model age calculations based on a statistically and geologically reasonable lower intercept produce very consistent internal relationships. The Pan African Orogeny, considered to be responsible for loss of radiogenic argon and strontium from minerals of many rocks, does not appear to have affected the zircon data, even though uplift had exposed the rocks of the Arabian Shield at that time. Tonalite, granodiorite, and crosscutting leucoadamellite bodies in the southern part of the An Nimas Bathylith yield ages in the time range 820-760 Ma. A narrow time range of 660 to 665 million years was indicated for ages of widely separated and compositionally different intrusive bodies all to the east of the An Nimas Bathylith. This work suggests that the younger end of the age spectrum established from regional K-Ar and Rb-Sr measurements may be underestimated, and that magmatic activity could be more episodic than previously assumed.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Contributions to Mineralogy and Petrology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"Springer","doi":"10.1007/BF01164527","issn":"00107990","usgsCitation":"Cooper, J., Stacey, J.S., Stoeser, D., and Fleck, R., 1979, An evaluation of the zircon method of isotopic dating in the Southern Arabian Craton: Contributions to Mineralogy and Petrology, v. 68, no. 4, p. 429-439, https://doi.org/10.1007/BF01164527.","productDescription":"11 p.","startPage":"429","endPage":"439","costCenters":[],"links":[{"id":205143,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1007/BF01164527"},{"id":221815,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"otherGeospatial":"Arabian Peninsula","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ 34.53,11.8 ], [ 34.53,32.15 ], [ 60.3,32.15 ], [ 60.3,11.8 ], [ 34.53,11.8 ] ] ] } } ] }","volume":"68","issue":"4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059ea5be4b0c8380cd487e3","contributors":{"authors":[{"text":"Cooper, J.A.","contributorId":57005,"corporation":false,"usgs":true,"family":"Cooper","given":"J.A.","email":"","affiliations":[],"preferred":false,"id":363228,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Stacey, J. S.","contributorId":72785,"corporation":false,"usgs":true,"family":"Stacey","given":"J.","email":"","middleInitial":"S.","affiliations":[],"preferred":false,"id":363229,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Stoeser, D.G.","contributorId":86108,"corporation":false,"usgs":true,"family":"Stoeser","given":"D.G.","email":"","affiliations":[],"preferred":false,"id":363230,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Fleck, R.J.","contributorId":25147,"corporation":false,"usgs":true,"family":"Fleck","given":"R.J.","email":"","affiliations":[],"preferred":false,"id":363227,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ]}