Noble gas isotopes including 3He/4He, 40Ar/36Ar and Xe isotope ratios were determined for coexisting glass and olivine crystals in tholeiitic and alkalic basalts and dunite xenoliths from Loihi Seamount.
Glass and coexisting olivine crystals have similar 3He/4He ratios (2.8–3.4) × 10−5, 20 to 24 times the atmospheric ratio (RA), but different 40Ar/36Ar ratios (400–1000). Based on the results of noble gas isotope ratios and microscopic observation, some olivine crystals are xenocrysts. We conclude that He is equilibrated between glass and olivine xenocrysts, but Ar is not.
The apparent high 3He/4He ratio (3 × 10−5; = 21 RA) coupled with a relatively high 40Ar/36Ar ratio (4200) for dunite xenoliths (KK 17-5) may be explained by equilibration of He between MORB-type cumulates and the host magma.
Except for the dunite xenoliths, noble gas data for these Loihi samples are compatible with a model in which samples from hot spot areas may be explained by mixing between P (plume)-type and M (MORB)-type components with the addition of A (atmosphere)-type component.
Excess 129Xe has not been observed due to apparent large mass fractionation among Xe isotopes.
","language":"English","publisher":"Elsevier","doi":"10.1016/0012-821X(83)90156-5","issn":"0012821X","usgsCitation":"Kaneoka, I., Takaoka, N., and Clague, D., 1983, Noble gas systematics for coexisting glass and olivine crystals in basalts and dunite xenoliths from Loihi Seamount: Earth and Planetary Science Letters, v. 66, no. C, p. 427-437, https://doi.org/10.1016/0012-821X(83)90156-5.","productDescription":"11 p.","startPage":"427","endPage":"437","numberOfPages":"11","costCenters":[],"links":[{"id":220825,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"66","issue":"C","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a6722e4b0c8380cd731cc","contributors":{"authors":[{"text":"Kaneoka, I.","contributorId":77298,"corporation":false,"usgs":true,"family":"Kaneoka","given":"I.","email":"","affiliations":[],"preferred":false,"id":360701,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Takaoka, N.","contributorId":51017,"corporation":false,"usgs":true,"family":"Takaoka","given":"N.","email":"","affiliations":[],"preferred":false,"id":360700,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Clague, D.A.","contributorId":36129,"corporation":false,"usgs":true,"family":"Clague","given":"D.A.","email":"","affiliations":[],"preferred":false,"id":360699,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70011297,"text":"70011297 - 1983 - Process and rate of dedolomitization: Mass transfer and C14 dating in a regional carbonate aquifer","interactions":[],"lastModifiedDate":"2024-01-03T12:27:00.499197","indexId":"70011297","displayToPublicDate":"1983-01-01T00:00:00","publicationYear":"1983","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1786,"text":"Geological Society of America Bulletin","active":true,"publicationSubtype":{"id":10}},"title":"Process and rate of dedolomitization: Mass transfer and C14 dating in a regional carbonate aquifer","docAbstract":"Regional dedolomitization is the major process that controls the chemical character of water in the Mississippian Pahasapa Limestone (Madison equivalent) surrounding the Black Hills, South Dakota and Wyoming. The process of dedolomitization consists of dolomite dissolution and concurrent precipitation of calcite; it is driven by dissolution of gypsum.
Deuterium and oxygen isotopic data from the ground water, coupled with regional potentiometric maps, show that recharge occurs on the western slope of the Black Hills and that the water flows northward and westward toward the Powder River Basin. A significant part flows around the southern end of the Black Hills to replenish the aquifer to the east of the Hills. Depth of flow was inferred from interpretation of the silica geothermometer based on the temperature-dependent solubilities of quartz and chalcedony in water. Chemical effects of warm water in the Pahasapa Limestone include changes in the solubility products of minerals, conversion of gypsum to anhydrite, solution and precipitation of minerals, and increases in the tendency for outgassing of carbon dioxide. Where sulfate reduction is not important, sulfur isotope data show that (1) in the Mississippian aquifer, most of the sulfate is from dissolution of gypsum and (2) some wells and springs have a hydrologic connection with overlying Permian and Pennsylvanian evaporites. Sulfate ion concentration, a progress variable, shows a strong correlation with pH as a result of the combined effects of the dedolomitization reactions.
Mass-balance and mass-transfer calculations were used to adjust 14C values to determine a range of ground-water flow velocities between 2 and 20 m/yr. These velocities are characteristic of carbonate aquifers. The average rates of dolomite and gypsum dissolution are 1.7 × 10−4 and 3.4 × 10−4 mmol/kg of H2O/yr, respectively. The precipitation of calcite is occurring at the rate of 3.4 × 10−4 mmol/kg of H2O/yr. The close agreement among the model results demonstrates that dedolomitization is controlling water-rock interactions in this regional carbonate aquifer system.
Planning for the best use of land and its resources should take fully into consideration the long-term consequences of each type of use in order to stretch out most beneficially the well-being of society in the future, and to protect the integrity of the land and its biota. Three kinds of land-use can be distinguished for planning purposes. Reversible land-use leaves the land, after use, essentially as it was before; little or no man-induced modification remains. An example of reversible use in the United States is the designation of certain public lands as Wilderness. Terminal land-use commits the land to a chosen particular use, and any attempt at reversal requires either time-scales that are long compared with the expected lifespan of the social and political institution, or a commitment of resources that is too high for society to consider worth bearing. Examples of terminal land-use are location of metropolises and sites of toxic and/or radioactive waste disposals; by its nature the list grows monotonically. A current source of some social tension arises from the fact that Wilderness designation appears to assign a terminal-use status by legislative fiat, whereas in fact the land is being used reversibly.
Isotopic ratios and trace element abundances were measured on samples of Ir-enriched clay at the Cretaceous-Tertiary boundary, and in carbonate and marl from 5 cm below and 3 cm above the boundary. Samples were leached with acetic acid to remove carbonate, and with hydrochloric acid. Leachates and residues were measured. The Sr, Nd, O and H isotopic compositions of the boundary clay residues are distinct from those of the stratigraphically neighboring materials. The data indicate that most of the clay material was derived from a terrestrial source with relatively low87Sr/86Sr and high143Nd/144Nd ratios. The δ18O data suggest that the detritus has been modified by submarine weathering. K-Ca and Rb-Sr systematics, as well as O isotope ratios of K-feldspar spherules within the boundary clay, suggest that they are predominantly authigenic and may have formed after the time of deposition. However, Sm-Nd and Rb-Sr isotopic data indicate that the spherules contain relict material that provides information on the nature of the original detritus. The isotopic evidence for foreign terrestrial detritus in the boundary clay, the low rare earth element concentrations and high Ni concentration, support the hypothesis of a terminal Cretaceous asteroidal impact that produced a global layer of fallout. The data are most easily explained if the impact site was on oceanic crust rather than continental crust, and if a substantial fraction of the fallout was derived from relatively deep within the lithosphere (>3 km). This would probably require a single large impactor.
","language":"English","publisher":"Elsevier","doi":"10.1016/0012-821X(83)90096-1","issn":"0012821X","usgsCitation":"DePaolo, D., Kyte, F., Marshall, B., O’Neil, J.R., and Smit, J., 1983, Rb-Sr, Sm-Nd, K-Ca, O, and H isotopic study of Cretaceous-Tertiary boundary sediments, Caravaca, Spain: evidence for an oceanic impact site: Earth and Planetary Science Letters, v. 64, no. 3, p. 356-373, https://doi.org/10.1016/0012-821X(83)90096-1.","productDescription":"18 p.","startPage":"356","endPage":"373","costCenters":[{"id":35995,"text":"Geology, Geophysics, and Geochemistry Science Center","active":true,"usgs":true}],"links":[{"id":220836,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"Spain","city":"Caravaca","otherGeospatial":"Barranco del Gredero","geographicExtents":"{\"type\":\"FeatureCollection\",\"features\":[{\"type\":\"Feature\",\"geometry\":{\"type\":\"Polygon\",\"coordinates\":[[[-9.03482,41.88057],[-8.98443,42.59278],[-9.39288,43.02662],[-7.97819,43.74834],[-6.75449,43.56791],[-5.41189,43.57424],[-4.34784,43.40345],[-3.51753,43.4559],[-1.90135,43.4228],[-1.50277,43.03401],[0.33805,42.57955],[0.70159,42.79573],[1.82679,42.34338],[2.986,42.47302],[3.03948,41.89212],[2.09184,41.22609],[0.81052,41.01473],[0.72133,40.67832],[0.10669,40.12393],[-0.27871,39.30998],[0.11129,38.73851],[-0.46712,38.29237],[-0.68339,37.64235],[-1.43838,37.44306],[-2.14645,36.67414],[-3.41578,36.6589],[-4.3689,36.67784],[-4.99522,36.32471],[-5.37716,35.94685],[-5.86643,36.02982],[-6.23669,36.36768],[-6.52019,36.94291],[-7.45373,37.09779],[-7.53711,37.4289],[-7.16651,37.80389],[-7.02928,38.07576],[-7.37409,38.37306],[-7.09804,39.03007],[-7.49863,39.62957],[-7.06659,39.71189],[-7.02641,40.18452],[-6.86402,40.33087],[-6.85113,41.11108],[-6.38909,41.38182],[-6.66861,41.88339],[-7.25131,41.91835],[-7.42251,41.79207],[-8.01317,41.79089],[-8.26386,42.28047],[-8.67195,42.13469],[-9.03482,41.88057]]]},\"properties\":{\"name\":\"Spain\"}}]}","volume":"64","issue":"3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a9564e4b0c8380cd819ae","contributors":{"authors":[{"text":"DePaolo, D.J.","contributorId":8617,"corporation":false,"usgs":true,"family":"DePaolo","given":"D.J.","email":"","affiliations":[],"preferred":false,"id":361025,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Kyte, F.T.","contributorId":25700,"corporation":false,"usgs":true,"family":"Kyte","given":"F.T.","email":"","affiliations":[],"preferred":false,"id":361027,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Marshall, B.D.","contributorId":19581,"corporation":false,"usgs":true,"family":"Marshall","given":"B.D.","email":"","affiliations":[],"preferred":false,"id":361026,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"O’Neil, J. R.","contributorId":69633,"corporation":false,"usgs":true,"family":"O’Neil","given":"J.","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":361029,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Smit, J.","contributorId":32677,"corporation":false,"usgs":true,"family":"Smit","given":"J.","email":"","affiliations":[],"preferred":false,"id":361028,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}} ,{"id":70011338,"text":"70011338 - 1983 - Euler-Lagrangian computation for estuarine hydrodynamics","interactions":[],"lastModifiedDate":"2016-07-27T10:37:23","indexId":"70011338","displayToPublicDate":"1983-01-01T00:00:00","publicationYear":"1983","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"Euler-Lagrangian computation for estuarine hydrodynamics","docAbstract":"The transport of conservative and suspended matter in fluid flows is a phenomenon of Lagrangian nature because the process is usually convection dominant. Nearly all numerical investigations of such problems use an Eulerian formulation for the convenience that the computational grids are fixed in space and because the vast majority of field data are collected in an Eulerian reference frame. Several examples are given in this paper to illustrate a modeling approach which combines the advantages of both the Eulerian and Lagrangian computational techniques.
","largerWorkTitle":"Numerical Methods in Laminar and Turbulent Flow, Proceedings of the International Conference","conferenceTitle":"Numerical Methods in Laminar and Turbulent Flow, Proceedings of the Third International Conference.","conferenceLocation":"Seattle, WA","language":"English","publisher":"Pineridge Press","publisherLocation":"Swansea, Wa","isbn":"0906674220","usgsCitation":"Cheng, R.T., 1983, Euler-Lagrangian computation for estuarine hydrodynamics, in Numerical Methods in Laminar and Turbulent Flow, Proceedings of the International Conference, Seattle, WA, p. 341-352.","startPage":"341","endPage":"352","numberOfPages":"12","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":220766,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a0469e4b0c8380cd50980","contributors":{"authors":[{"text":"Cheng, Ralph T.","contributorId":69134,"corporation":false,"usgs":true,"family":"Cheng","given":"Ralph","email":"","middleInitial":"T.","affiliations":[],"preferred":false,"id":360866,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70011400,"text":"70011400 - 1983 - Human interactions with ground-water","interactions":[],"lastModifiedDate":"2012-03-12T17:19:09","indexId":"70011400","displayToPublicDate":"1983-01-01T00:00:00","publicationYear":"1983","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1746,"text":"GeoJournal","active":true,"publicationSubtype":{"id":10}},"title":"Human interactions with ground-water","docAbstract":"Ground-Water could be considered as an immense reservoir, from which only a certain amount of water can be withdrawn without affecting the quantity and quality of water. This amount is determined by the characteristics of the environment in which ground-water occurs and by the interactions of ground-water with precipitation, surface water, and people. It should be recognized that quantity and quality of ground-water are intimately related and should be considered accordingly. Quantity refers to usable water and water is usable for any specific purpose only so long as its quality has not deteriorated beyond acceptable limits. Thus an overall quantitative and qualitative management of ground water is inevitable, and its should also involve the uses of ground-water reservoirs for purposes other than water supply. The main objective of ground-water management is to ensure that ground-water resources will be available in appropriate time and in appropriate quantity and quality to meet the most important demands of our society. Traditional, and obvious uses of ground-water are the extraction of water for water supplies (domestic, municipal, agricultural, and industrial) and the natural discharge feeding lakes and maintaining base flow of streams. Not so obvious are the uses of ground-water reservoirs, the very framework within which ground-water occurs and moves, and in which other fluids or materials can be stored. In the last two decades, ground-water reservoirs have been intensively considered for many other purposes than water supplies. Diversified and very often conflicting uses need to be evaluated and dealt with in the most efficient way in order to determine the importance of each possible use, and to assign priorities of these uses. With rising competition for the use of ground-water reservoirs, we will also need to increase the potential for effective planning of ground-water development and protection. Man's development and use of ground-water necessarily modifies the natural conditions and the total natural system must be successfully blended with the unnatural stresses placed upon it. This can be accomplished by introducing new methods (such as ground-water zoning) in and by developing alternative strategies for ground-water management and protection. ?? 1983 D. Reidel Publishing Company.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"GeoJournal","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisherLocation":"Kluwer Academic Publishers","doi":"10.1007/BF00194489","issn":"03432521","usgsCitation":"Zaporozec, A., 1983, Human interactions with ground-water: GeoJournal, v. 7, no. 5, p. 427-433, https://doi.org/10.1007/BF00194489.","startPage":"427","endPage":"433","numberOfPages":"7","costCenters":[],"links":[{"id":205139,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1007/BF00194489"},{"id":221751,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"7","issue":"5","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a3281e4b0c8380cd5e868","contributors":{"authors":[{"text":"Zaporozec, A.","contributorId":24093,"corporation":false,"usgs":true,"family":"Zaporozec","given":"A.","email":"","affiliations":[],"preferred":false,"id":361007,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":1001454,"text":"1001454 - 1983 - Avian associations of the northern Great Plains grasslands","interactions":[],"lastModifiedDate":"2024-04-16T22:30:34.748652","indexId":"1001454","displayToPublicDate":"1983-01-01T00:00:00","publicationYear":"1983","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2193,"text":"Journal of Biogeography","active":true,"publicationSubtype":{"id":10}},"title":"Avian associations of the northern Great Plains grasslands","docAbstract":"The grassland region of the northern Great Plains was divided into six broad subregions by application of an avian indicator species analysis to data obtained from 582 sample plots censused during the breeding season. Common, ubiquitous species and rare species had little classificatory value and were eliminated from the data set used to derive the avian associations. Initial statistical division of the plots likely reflected structure of the dominant plant species used for nesting; later divisions probably were related to foraging or nesting cover requirements based on vegetation height or density, habitat heterogeneity, or possibly to the existence of mutually similar distributions or shared areas of greater than average abundance for certain groups of species. Knowledge of the effects of grazing, mostly by cattle, on habitat use by the breeding bird species was used to interpret the results of the indicator species analysis. Moderate grazing resulted in greater species richness in nearly all subregions; effects of grazing on total bird density were more variable.","language":"English","publisher":"Wiley","doi":"10.2307/2844742","usgsCitation":"Kantrud, H., and Kologiski, R., 1983, Avian associations of the northern Great Plains grasslands: Journal of Biogeography, v. 10, p. 331-350, https://doi.org/10.2307/2844742.","productDescription":"20 p.","startPage":"331","endPage":"350","costCenters":[{"id":480,"text":"Northern Prairie Wildlife Research Center","active":true,"usgs":true}],"links":[{"id":133636,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"10","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a91e4b07f02db656b12","contributors":{"authors":[{"text":"Kantrud, H.A.","contributorId":28553,"corporation":false,"usgs":true,"family":"Kantrud","given":"H.A.","email":"","affiliations":[],"preferred":false,"id":311059,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Kologiski, R.L.","contributorId":28213,"corporation":false,"usgs":true,"family":"Kologiski","given":"R.L.","affiliations":[],"preferred":false,"id":311058,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70168856,"text":"70168856 - 1983 - Earthquakes; September-October 1982","interactions":[],"lastModifiedDate":"2016-03-24T16:01:57","indexId":"70168856","displayToPublicDate":"1983-01-01T00:00:00","publicationYear":"1983","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1435,"text":"Earthquake Information Bulletin (USGS)","active":true,"publicationSubtype":{"id":10}},"title":"Earthquakes; September-October 1982","docAbstract":"Seismically speaking the months of September and October were very quiet. There were no major (magnitude 7.0-7.9) earthquakes. Guatemala was struck by a moderate earthquake on September 29 causing fatalities and considerable damage.
\nIn the United States, a number of earthquakes occurred, but only slight damage was reported.
","language":"English","publisher":"U.S Geological Survey","usgsCitation":"Person, W., 1983, Earthquakes; September-October 1982: Earthquake Information Bulletin (USGS), v. 15, no. 2, p. 73-76.","productDescription":"4 p.","startPage":"73","endPage":"76","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[],"links":[{"id":318605,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"15","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"56dabfd7e4b015c306f84c70","contributors":{"authors":[{"text":"Person, W. J.","contributorId":91472,"corporation":false,"usgs":true,"family":"Person","given":"W. J.","affiliations":[],"preferred":false,"id":621991,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70135757,"text":"70135757 - 1983 - Crustal structure beneath the southern Appalachians: Nonuniqueness of gravity modeling","interactions":[],"lastModifiedDate":"2017-08-24T12:56:52","indexId":"70135757","displayToPublicDate":"1982-12-27T00:00:00","publicationYear":"1983","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1796,"text":"Geology","active":true,"publicationSubtype":{"id":10}},"title":"Crustal structure beneath the southern Appalachians: Nonuniqueness of gravity modeling","docAbstract":"Gravity models computed for a profile across the long-wavelength paired negative-positive Bouguer anomalies of the southern Appalachian Mountains show that the large negative anomaly can be explained by a crustal root zone, whereas the steep gradient and positive anomaly east of the root may be explained equally well by three different geometries: a suture zone, a mantle upwarp, or a shallow body. Seismic data support the existence of a mountain root but are inadequate to resolve differences among the three possible geometries for the positive anomaly. The presence of outcropping mafic and ultramafic rocks in the southern Appalachians and the inferred tectonic history of the Appalachian orogen are most consistent with the suture-zone model. Crust similar to continental crust probably exists beneath the Coastal Plain and inner continental shelf where the gravity anomalies return to near-zero values.
","language":"English","publisher":"Geological Society of America","doi":"10.1130/0091-7613(1983)11<611:CSBTSA>2.0.CO;2","usgsCitation":"Hutchinson, D.R., Grow, J., and Klitgord, K.D., 1983, Crustal structure beneath the southern Appalachians: Nonuniqueness of gravity modeling: Geology, v. 11, no. 10, p. 611-615, https://doi.org/10.1130/0091-7613(1983)11<611:CSBTSA>2.0.CO;2.","productDescription":"5 p.","startPage":"611","endPage":"615","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":186,"text":"Coastal and Marine Geology Program","active":true,"usgs":true}],"links":[{"id":296724,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","otherGeospatial":"Appalachian Mountains","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -69.01611328125,\n 47.502358951968596\n ],\n [\n -66.6650390625,\n 45.336701909968106\n ],\n [\n -86.484375,\n 31.82156451492074\n ],\n [\n -88.2861328125,\n 33.65120829920497\n ],\n [\n -69.01611328125,\n 47.502358951968596\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"11","issue":"10","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"549165bfe4b0d0759afaad80","contributors":{"authors":[{"text":"Hutchinson, Deborah R. 0000-0002-2544-5466 dhutchinson@usgs.gov","orcid":"https://orcid.org/0000-0002-2544-5466","contributorId":521,"corporation":false,"usgs":true,"family":"Hutchinson","given":"Deborah","email":"dhutchinson@usgs.gov","middleInitial":"R.","affiliations":[{"id":678,"text":"Woods Hole Coastal and Marine Science Center","active":true,"usgs":true}],"preferred":false,"id":536831,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Grow, John A.","contributorId":51739,"corporation":false,"usgs":true,"family":"Grow","given":"John A.","affiliations":[{"id":678,"text":"Woods Hole Coastal and Marine Science Center","active":true,"usgs":true}],"preferred":false,"id":536832,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Klitgord, Kim D.","contributorId":82307,"corporation":false,"usgs":true,"family":"Klitgord","given":"Kim","email":"","middleInitial":"D.","affiliations":[{"id":678,"text":"Woods Hole Coastal and Marine Science Center","active":true,"usgs":true}],"preferred":false,"id":536833,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70180225,"text":"70180225 - 1982 - Aeromagnetic survey of the Chignik and Sutwik Island quadrangles: A section in The United States Geological Survey in Alaska: Accomplishments during 1980","interactions":[{"subject":{"id":70180225,"text":"70180225 - 1982 - Aeromagnetic survey of the Chignik and Sutwik Island quadrangles: A section in The United States Geological Survey in Alaska: Accomplishments during 1980","indexId":"70180225","publicationYear":"1982","noYear":false,"title":"Aeromagnetic survey of the Chignik and Sutwik Island quadrangles: A section in The United States Geological Survey in Alaska: Accomplishments during 1980"},"predicate":"IS_PART_OF","object":{"id":4434,"text":"cir844 - 1982 - The United States Geological Survey in Alaska: Accomplishments during 1980","indexId":"cir844","publicationYear":"1982","noYear":false,"title":"The United States Geological Survey in Alaska: Accomplishments during 1980"},"id":1}],"isPartOf":{"id":4434,"text":"cir844 - 1982 - The United States Geological Survey in Alaska: Accomplishments during 1980","indexId":"cir844","publicationYear":"1982","noYear":false,"title":"The United States Geological Survey in Alaska: Accomplishments during 1980"},"lastModifiedDate":"2017-01-27T11:11:59","indexId":"70180225","displayToPublicDate":"2017-01-01T00:00:00","publicationYear":"1982","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":307,"text":"Circular","code":"CIR","onlineIssn":"2330-5703","printIssn":"1067-084X","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"844","title":"Aeromagnetic survey of the Chignik and Sutwik Island quadrangles: A section in The United States Geological Survey in Alaska: Accomplishments during 1980","docAbstract":"The recently completed aeromagnetic survey of the Chignik and Sutwik Island quadrangles, on the Alaska Peninsula, is one of the most detailed systematic surveys ever made across a modern \"volcanic arc\" setting where both Holocene volcanic edifices and older volcanic centers occur (fig. 54).
","largerWorkType":{"id":18,"text":"Report"},"largerWorkTitle":"The United States Geological Survey in Alaska: Accomplishments during 1980 (Circular 844)","largerWorkSubtype":{"id":5,"text":"USGS Numbered Series"},"language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Alexandria, VA","doi":"10.3133/70180225","usgsCitation":"Case, J.E., Cox, D.P., Detra, D.E., Detterman, R.L., and Wilson, F.H., 1982, Aeromagnetic survey of the Chignik and Sutwik Island quadrangles: A section in The United States Geological Survey in Alaska: Accomplishments during 1980: U.S. Geological Survey Circular 844, 2 p., https://doi.org/10.3133/70180225.","productDescription":"2 p.","startPage":"88","endPage":"89","numberOfPages":"2","costCenters":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true}],"links":[{"id":333981,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":333980,"rank":1,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/circ/1982/0844/report.pdf#page=96","text":"Start page in larger work"}],"country":"United States","state":"Alaska","otherGeospatial":"Chignik, Sutwik Island","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5889c7c7e4b0ba3b075e065e","contributors":{"authors":[{"text":"Case, James E.","contributorId":68702,"corporation":false,"usgs":true,"family":"Case","given":"James","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":660809,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Cox, Dennis P. dcox@usgs.gov","contributorId":2766,"corporation":false,"usgs":true,"family":"Cox","given":"Dennis","email":"dcox@usgs.gov","middleInitial":"P.","affiliations":[],"preferred":true,"id":660810,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Detra, David E.","contributorId":17342,"corporation":false,"usgs":true,"family":"Detra","given":"David","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":660811,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Detterman, Robert L.","contributorId":71526,"corporation":false,"usgs":true,"family":"Detterman","given":"Robert","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":660812,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Wilson, Frederic H. 0000-0003-1761-6437 fwilson@usgs.gov","orcid":"https://orcid.org/0000-0003-1761-6437","contributorId":67174,"corporation":false,"usgs":true,"family":"Wilson","given":"Frederic","email":"fwilson@usgs.gov","middleInitial":"H.","affiliations":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true},{"id":119,"text":"Alaska Science Center Geology Minerals","active":true,"usgs":true}],"preferred":true,"id":660813,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}} ,{"id":70043184,"text":"70043184 - 1982 - A topology of mineralization and its meaning for prospecting","interactions":[{"subject":{"id":10514,"text":"ofr80298 - 1980 - A topology of mineralization and its meaning for prospecting","indexId":"ofr80298","publicationYear":"1980","noYear":false,"title":"A topology of mineralization and its meaning for prospecting"},"predicate":"SUPERSEDED_BY","object":{"id":70043184,"text":"70043184 - 1982 - A topology of mineralization and its meaning for prospecting","indexId":"70043184","publicationYear":"1982","noYear":false,"title":"A topology of mineralization and its meaning for prospecting"},"id":1}],"lastModifiedDate":"2013-02-20T08:55:41","indexId":"70043184","displayToPublicDate":"2013-01-01T00:00:00","publicationYear":"1982","noYear":false,"publicationType":{"id":5,"text":"Book chapter"},"publicationSubtype":{"id":24,"text":"Book Chapter"},"title":"A topology of mineralization and its meaning for prospecting","docAbstract":"Epigenetic mineral deposits are universal members of an orderly spatial and temporal arrangement of igneous rocks, endomorphic rocks, and hydrothermally altered rocks. The association and sequence of these rocks is invariant whereas the metric relations and configurations of the properties of these rocks are unlimited in variety. This characterization satisfies the doctrines of topology. Metric relations are statistical, and their modes are among the better guides to optimal areas for exploration. Metric configurations are graphically irregular and unpredictable mathematical surfaces like mountain topography. Each mineral edifice must be mapped to locate its mineral deposits. All measurements and observations are only positive or neutral for the occurrence of a mineral deposit. Effective prospecting is based on an increasing density of positive data with proximity to the mineral deposit. This means sampling for maximal numbers of positive data, pragmatically the highest ore-element assays at each site, by selecting rock showing maximal development of lode attributes.","largerWorkType":{"id":4,"text":"Book"},"largerWorkTitle":"Ore Genesis: Special Publication of the Society for Geology Applied to Mineral Deposits","largerWorkSubtype":{"id":4,"text":"Other Government Series"},"language":"English","publisher":"Springer","publisherLocation":"Amsterdam, Netherlands","doi":"10.1007/978-3-642-68344-2_62","usgsCitation":"Neuerburg, G.J., 1982, A topology of mineralization and its meaning for prospecting, chap. of Ore Genesis: Special Publication of the Society for Geology Applied to Mineral Deposits, v. 2, p. 657-666, https://doi.org/10.1007/978-3-642-68344-2_62.","productDescription":"10 p.","startPage":"657","endPage":"666","costCenters":[{"id":387,"text":"Mineral Resources Program","active":true,"usgs":true}],"links":[{"id":267099,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":267098,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1007/978-3-642-68344-2_62"}],"volume":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5114daf2e4b0ca7af0743aef","contributors":{"authors":[{"text":"Neuerburg, G. J.","contributorId":29395,"corporation":false,"usgs":true,"family":"Neuerburg","given":"G.","middleInitial":"J.","affiliations":[],"preferred":false,"id":473122,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70038344,"text":"70038344 - 1982 - Water resources inventory of Connecticut Part 10: Lower Connecticut River basin","interactions":[],"lastModifiedDate":"2014-06-27T11:19:00","indexId":"70038344","displayToPublicDate":"2012-05-01T11:47:00","publicationYear":"1982","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":2,"text":"State or Local Government Series"},"seriesTitle":{"id":108,"text":"Connecticut Water Resources Bulletin","active":false,"publicationSubtype":{"id":2}},"seriesNumber":"31","title":"Water resources inventory of Connecticut Part 10: Lower Connecticut River basin","docAbstract":"The lower Connecticut River basin study area in south-central Connecticut includes 639 square miles and is drained principally by the Connecticut River and by seven smaller streams that flow directly to Long Island Sound between the West River on the west and the Connecticut River on the east. The population in 1979 was estimated to be 210,380. Much of the industrial development and population centers are in the Mattabesset River basin in the northwestern part, and the largest water use is also in the Mattabesset River basin.\nPrecipitation averages 47 inches per year and provides an abundant supply of water. About 20 inches returns to the atmosphere as evapotranspiration, and the remainder either flows directly to streams or percolates to the water table, eventually discharging to Long Island Sound. Small quantities of water are exported from the basin by the New Haven and Meridan Water Departments, and small quantities are imported by the New Britain Water Department and Metropolitan Direct Commission. Precipitation during 1931-60 resulted in an average annual runoff of 302 billion gallons. In inflow from the Connecticut River is added to the average annual runoff, the 4,370 billion gallon s per year is potentially available for water ue.
\nThe domestic, institutional, commercial, and industrial (other than cooling water) water use for 1970 was 7 billion gallons, which is only 3 percent of the total water used, whereas 97 percent of the total is cooling water for power plants. Approximately 60 percent of the 7 billion gallons is treated before being discharged back to the streams.
\nThe total amount of fresh water used during 1970 was estimated to be 256,000 million gallons (Mgal), of which 247,000 Mgal was used for cooling water at stream electric-generating plants. The quantity for domestic, commercial, industrial, and agricultural used was 9,000 Mgal, which was approximately 120 gallons a day per person. Public water systems providing 70 percent of these requirement and all the systems supplying water met the drinking water standards of the Connecticut General Assembly (1975).
\nTill is widespread and generally provides only small amounts of water. Wells in till normally yield only a few hundred gallons of water daily and may be inadequate during dry periods. The thickness of of till ranges from 0 to 15 feet; a median thickness of 26 feet is estimated from information provided in drillers' logs of 467 wells penetrating underlying bedrock. The till is generally used only as an emergency or secondary source of water.
\nBedrock aquifers underlie the entire area and include sedimentary and crystalline (igneous and metamorphic) rock types. These aquifers supply small and usually reliable quantities of water to wells and are the chief source of water for many rural homes and farms., About 90 percent of the wells tapping bedrock yield at least 2 gal/min. The median yields from wells tapping aquifers in sedimentary, igneous, and metamorphic rocks are 11, 8, and 6.5 gal/min, respectively.
\nThe quantity of water potentially available from stratified drift was estimated on the basis of hydraulic characteristics of the aquifers, mathematical modeling of the aquifer system, and evaluation of natural and induced recharge. Long-term yields estimated or ten areas underlain by significant thickness of stratified drift range from 0.4 to 4.4 million gallons per day (Mgal/d). A change in well spacing or numbering could increase the long-term yields, but detailed modeling verification studies are needed to confirm optimal well locations.
\nThe chemical and physical (turbidity, color, taste, and sediment load) quality of water is good. The water if generally low in dissolved solids and is classified as soft to hard. Surface water is less mineralized than ground water, especially during high flow, when it is primarily derived from surface runoff rather than groundwater runoff. A median dissolved-solids concentration of 42 milligrams per liter (mg/L) and median hardness of 18 mg/L were determined from water samples collected from 26 streams during the high-flow period. During the low-flow period, median dissolved-solids concentration of 61 mg/L and median hardness of 27 mg/L were determined from sample from the same streams.
\nThe quality of water in stratified-drift and crystalline-rock aquifers is generally better than that in the sedimentary-rock aquifers. Water from 32 wells tapping stratified drift had median dissolved-solids concentrations of 116 mg/L; and 33 wells tapping stratified drift and 42 tapping crystalline rock had median hardness of 73 mg/L and 68 mg/L, respectively. Water from 32 wells tapping sedimentary rock had median dissolved concentrations of 231 and 156 mg/L, respectively. Sedimentary rock generally yields the hardest water.
\nIron and manganese occur objectionable concentrations in places, particularly in water from streams draining swamps and in water from aquifers either rich in iron and manganese-nearing minerals or where the reducing environment for solution of these minerals is favorable. Concentrations of iron in excess of 0.3 mg/L were found in 35 percent of the high streamflow samples, and in 45 percent of the ground-water samples. Most of the high iron and manganese concentration in streams and aquifers are found east of the Connecticut River.
\n(1) Our objective was to determine the effect of exposure to an organophosphate pesticide (OP), dicrotophos (3-hydroxy-N,N-dimethyl-cis-scrotonamide dimethyl phosphate), on care of nestlings by wild female starlings (Sturnus vulgaris).
(2) We selected twelve pairs of active nests based on synchrony in the reproductive cycle. When nestlings were 10 days old (day 10), adult males were captured and killed and brood size was adjusted to four. The frequency and temporal distribution of sorties made by each pair of females to feed their young were recorded for 2 h at 18.00 hours on day 11 and 06.00 hours on day 12. One female from each pair was given a single oral dose of dicrotophos (2.5 mg/kg of body weight) dissolved in corn oil; the second female received an equivalent exposure of pure corn oil. Birds were released and their nestlings weighed. Parental care was again monitored between 18.00 and 20.00 hours on day 12 and 06.00 and 08.00 hours on day 13. Females were then captured and they with their young were weighed and killed. Changes in parental care in OP-dosed and control females were compared using paired t-tests.
(3) The OP-dosed females made significantly (P < 0.5) fewer sorties to feed their young and remained away from their boxes for longer periods of time than controls. Nestlings of OP-treated females lost significantly more weight (X̄ = 9.3%) than nestlings of controls (X̄ = 3.2%). Brain ChE activity in OP-treated females was inhibited an average of 50.7% compared with controls. Weight changes in OP-dosed (X̄ = -8.9%) and control females (X̄ = -8.3%) were similar.
(4) Results indicate that parental care may be significantly reduced in songbirds receiving severe but sublethal exposure to organophosphate pesticides. The potential for a reduction or modification in parental care to alter reproductive success in passerines is discussed.
(5) Techniques utilized, or modifications thereof, may be useful in collecting the additional data needed to adequately assess the impact of OPs on songbird reproduction.
","language":"English","publisher":"British Ecological Society","doi":"10.2307/2403470","usgsCitation":"Grue, C., Powell, G., and McChesney, M., 1982, Care of nestlings by wild female starlings exposed to an organophosphate pesticide: Journal of Applied Ecology, v. 19, no. 2, p. 327-335, https://doi.org/10.2307/2403470.","productDescription":"9 p.","startPage":"327","endPage":"335","numberOfPages":"9","costCenters":[{"id":531,"text":"Patuxent Wildlife Research Center","active":true,"usgs":true}],"links":[{"id":193594,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"19","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e49f4e4b07f02db5effa3","contributors":{"authors":[{"text":"Grue, C.E.","contributorId":86446,"corporation":false,"usgs":true,"family":"Grue","given":"C.E.","affiliations":[],"preferred":false,"id":334682,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Powell, G.V.N.","contributorId":23894,"corporation":false,"usgs":true,"family":"Powell","given":"G.V.N.","email":"","affiliations":[],"preferred":false,"id":334680,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"McChesney, M.J.","contributorId":31484,"corporation":false,"usgs":true,"family":"McChesney","given":"M.J.","email":"","affiliations":[],"preferred":false,"id":334681,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":5210369,"text":"5210369 - 1982 - Regional population inferences for the American woodcock","interactions":[],"lastModifiedDate":"2012-02-02T00:15:16","indexId":"5210369","displayToPublicDate":"2009-06-09T09:23:17","publicationYear":"1982","noYear":false,"publicationType":{"id":5,"text":"Book chapter"},"publicationSubtype":{"id":24,"text":"Book Chapter"},"seriesNumber":"14","title":"Regional population inferences for the American woodcock","docAbstract":"Woodcock (Philohela minor) bandings and recoveries from 1967 to 1977 were analyzed from two large banding reference areas corresponding to existing Eastern and Central harvest units. We examined temporal, age-specific, sex-specific, and geographic variation in both survival and recovery rates, using recently developed stochastic models. Survival rate estimates for females were higher than those for males, and higher for adults than for young. There was no significant difference in recovery rates between young and adults. Recovery rates of Eastern unit birds were higher, and overall survival rates were lower than those of Central unit birds. Survival rate estimates were used with crude production rate estimates in a simple modeling effort, and resulting rates of population increase were 1.2 to 1.3 times higher in the Central reference area.","largerWorkType":{"id":4,"text":"Book"},"largerWorkTitle":"Woodcock Ecology and Management","largerWorkSubtype":{"id":4,"text":"Other Government Series"},"language":"English","usgsCitation":"Dwyer, T., and Nichols, J., 1982, Regional population inferences for the American woodcock, chap. of Woodcock Ecology and Management, p. 12-21.","productDescription":"v, 191","startPage":"12","endPage":"21","costCenters":[{"id":531,"text":"Patuxent Wildlife Research Center","active":true,"usgs":true}],"links":[{"id":201308,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4ac9e4b07f02db67c499","contributors":{"authors":[{"text":"Dwyer, T.J.","contributorId":56177,"corporation":false,"usgs":true,"family":"Dwyer","given":"T.J.","email":"","affiliations":[],"preferred":false,"id":328276,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Nichols, J.D. 0000-0002-7631-2890","orcid":"https://orcid.org/0000-0002-7631-2890","contributorId":14332,"corporation":false,"usgs":true,"family":"Nichols","given":"J.D.","affiliations":[],"preferred":false,"id":328275,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":5210288,"text":"5210288 - 1982 - Modern pesticides and bobwhite populations","interactions":[],"lastModifiedDate":"2020-03-12T11:56:11","indexId":"5210288","displayToPublicDate":"2009-06-09T09:23:17","publicationYear":"1982","noYear":false,"publicationType":{"id":5,"text":"Book chapter"},"publicationSubtype":{"id":24,"text":"Book Chapter"},"title":"Modern pesticides and bobwhite populations","docAbstract":"Bobwhite (Colinus virginianus) are frequently used as test animals for wildlife tests of pesticides. The organophosphate and carbamate pesticides that have replaced the organochlorines have many desirable properties, but they span a wide range of acute toxicities and some of them affe,ct survival, reproduction, food consumption, behavior, and nervous system enzymes in laboratory tests. Applying these laboratory findings to the field requires assumptions about the severity of exposure in the field. Direct field measurements show that birds may be exposed to significant amounts of these pesticides or even more toxic degradation products under some conditions. Adverse population effects may also result from depression of insect populations during the seasons when bobwhites rely on insects for food.
","language":"English","publisher":"Oklahoma State University","publisherLocation":"Stillwater, Oklahoma","usgsCitation":"Stromborg, K., 1982, Modern pesticides and bobwhite populations, p. 69-73.","productDescription":"5 p.","startPage":"69","endPage":"73","costCenters":[{"id":531,"text":"Patuxent Wildlife Research Center","active":true,"usgs":true}],"links":[{"id":201156,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4b04e4b07f02db699518","contributors":{"editors":[{"text":"Schitoskey, Frank= Jr.","contributorId":111424,"corporation":false,"usgs":true,"family":"Schitoskey","given":"Frank=","suffix":"Jr.","email":"","affiliations":[],"preferred":false,"id":506234,"contributorType":{"id":2,"text":"Editors"},"rank":1},{"text":"Schitoskey, Elizabeth C.","contributorId":111471,"corporation":false,"usgs":true,"family":"Schitoskey","given":"Elizabeth","email":"","middleInitial":"C.","affiliations":[],"preferred":false,"id":506235,"contributorType":{"id":2,"text":"Editors"},"rank":2},{"text":"Talent, Larry G.","contributorId":112219,"corporation":false,"usgs":true,"family":"Talent","given":"Larry","email":"","middleInitial":"G.","affiliations":[],"preferred":false,"id":506236,"contributorType":{"id":2,"text":"Editors"},"rank":3}],"authors":[{"text":"Stromborg, K. L.","contributorId":34466,"corporation":false,"usgs":true,"family":"Stromborg","given":"K. L.","affiliations":[],"preferred":false,"id":328140,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70011845,"text":"70011845 - 1982 - Amino acid geochemistry of fossil bones from the Rancho La Brea asphalt deposit, California","interactions":[],"lastModifiedDate":"2025-07-10T15:42:57.8938","indexId":"70011845","displayToPublicDate":"2004-11-19T00:00:00","publicationYear":"1982","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3218,"text":"Quaternary Research","active":true,"publicationSubtype":{"id":10}},"title":"Amino acid geochemistry of fossil bones from the Rancho La Brea asphalt deposit, California","docAbstract":"Low aspartic acid d:l ratios and modern collagenlike concentration values indicate that amino acids in bones from the Rancho La Brea asphalt deposit, Los Angeles, California are better preserved than amino acids in bones of equivalent age that have not been preserved in asphalt. Amino acids were recovered from 10 Rancho La Brea bone samples which range in age from less than 200 to greater than 36,000 yr. The calibrated rates of aspartic acid racemization range from 2.1 to 5.0 × 10−6yr−1. Although this wide range of rate constants decreases the level of confidence for age estimates, use of the larger rate constant of 5.0 × 10−6yr−1 provides minimum age estimates which fit the known stratigraphic and chronologic records of the Rancho La Brea deposits.
","language":"English","publisher":"Elsevier","doi":"10.1016/0033-5894(82)90068-0","issn":"00335894","usgsCitation":"McMenamin, M., Blunt, D., Kvenvolden, K., Miller, S., Marcus, L., and Pardi, R., 1982, Amino acid geochemistry of fossil bones from the Rancho La Brea asphalt deposit, California: Quaternary Research, v. 18, no. 2, p. 174-183, https://doi.org/10.1016/0033-5894(82)90068-0.","productDescription":"10 p.","startPage":"174","endPage":"183","costCenters":[],"links":[{"id":221617,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"California","city":"Los Angeles","otherGeospatial":"Rancho La Brea","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -118.36504919269949,\n 34.084800941611704\n ],\n [\n -118.36504919269949,\n 34.052190274637866\n ],\n [\n -118.28768748317239,\n 34.052190274637866\n ],\n [\n -118.28768748317239,\n 34.084800941611704\n ],\n [\n -118.36504919269949,\n 34.084800941611704\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","volume":"18","issue":"2","noUsgsAuthors":false,"publicationDate":"2017-01-20","publicationStatus":"PW","scienceBaseUri":"5059e9b9e4b0c8380cd483f1","contributors":{"authors":[{"text":"McMenamin, M.A.S.","contributorId":92311,"corporation":false,"usgs":true,"family":"McMenamin","given":"M.A.S.","email":"","affiliations":[],"preferred":false,"id":362099,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Blunt, D.J.","contributorId":93189,"corporation":false,"usgs":true,"family":"Blunt","given":"D.J.","email":"","affiliations":[],"preferred":false,"id":362100,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Kvenvolden, K.A.","contributorId":80674,"corporation":false,"usgs":true,"family":"Kvenvolden","given":"K.A.","email":"","affiliations":[],"preferred":false,"id":362098,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Miller, Scott","contributorId":58387,"corporation":false,"usgs":true,"family":"Miller","given":"Scott","affiliations":[],"preferred":false,"id":362095,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Marcus, L.F.","contributorId":71837,"corporation":false,"usgs":true,"family":"Marcus","given":"L.F.","email":"","affiliations":[],"preferred":false,"id":362097,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Pardi, R.R.","contributorId":68602,"corporation":false,"usgs":true,"family":"Pardi","given":"R.R.","email":"","affiliations":[],"preferred":false,"id":362096,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}} ,{"id":70011875,"text":"70011875 - 1982 - The occurrence and fission-track ages of late neogene and quaternary volcanic sediments, Siwalik group, Northern Pakistan","interactions":[],"lastModifiedDate":"2025-06-16T22:43:43.916058","indexId":"70011875","displayToPublicDate":"2003-04-04T00:00:00","publicationYear":"1982","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2996,"text":"Palaeogeography, Palaeoclimatology, Palaeoecology","printIssn":"0031-0182","active":true,"publicationSubtype":{"id":10}},"title":"The occurrence and fission-track ages of late neogene and quaternary volcanic sediments, Siwalik group, Northern Pakistan","docAbstract":"Volcanic sediments, now mostly bentonites and bentonitic mudstones, occur throughout the Late Neogene and Quaternary Siwalik Group of northern Pakistan. A number of these deposits have been dated by the fission-track method, utilizing zircon phenocrysts from these deposits, and provide the chronometric constraints upon which a paleomagnetic stratigraphy is developed for the Siwalik Group. Notable in the occurrence of these altered tuff horizons is an apparent mode in their stratigraphic development from approximately 3.0 to 1.5 m.y. B.P. which coincides with the period of activity of the Dacht-e-Nawar volcanic complex of east-central Afghanistan. Fission-track ages of certain tuffs for critical areas of northern Pakistan are reported herein.
","language":"English","publisher":"Elsevier","doi":"10.1016/0031-0182(82)90058-X","issn":"00310182","usgsCitation":"Johnson, G., Zeitler, P., Naeser, C.W., Johnson, N., Summers, D., Frost, C., Opdyke, N., and Tahirkheli, R., 1982, The occurrence and fission-track ages of late neogene and quaternary volcanic sediments, Siwalik group, Northern Pakistan: Palaeogeography, Palaeoclimatology, Palaeoecology, v. 37, no. 1, p. 63-93, https://doi.org/10.1016/0031-0182(82)90058-X.","productDescription":"31 p.","startPage":"63","endPage":"93","costCenters":[],"links":[{"id":221066,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"Pakistan","otherGeospatial":"northern Pakistan","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n 70.53772619874329,\n 37.17396266355513\n ],\n [\n 70.53772619874329,\n 30.015464537817465\n ],\n [\n 74.84488172785998,\n 30.015464537817465\n ],\n [\n 74.84488172785998,\n 37.17396266355513\n ],\n [\n 70.53772619874329,\n 37.17396266355513\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","volume":"37","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505bae36e4b08c986b323f57","contributors":{"authors":[{"text":"Johnson, G.D.","contributorId":17341,"corporation":false,"usgs":true,"family":"Johnson","given":"G.D.","email":"","affiliations":[],"preferred":false,"id":362172,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Zeitler, P.","contributorId":80818,"corporation":false,"usgs":true,"family":"Zeitler","given":"P.","email":"","affiliations":[],"preferred":false,"id":362176,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Naeser, C. W.","contributorId":17582,"corporation":false,"usgs":true,"family":"Naeser","given":"C.","middleInitial":"W.","affiliations":[],"preferred":false,"id":362173,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Johnson, N.M.","contributorId":105429,"corporation":false,"usgs":true,"family":"Johnson","given":"N.M.","email":"","affiliations":[],"preferred":false,"id":362178,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Summers, D.M.","contributorId":105433,"corporation":false,"usgs":true,"family":"Summers","given":"D.M.","email":"","affiliations":[],"preferred":false,"id":362179,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Frost, C.D.","contributorId":20900,"corporation":false,"usgs":true,"family":"Frost","given":"C.D.","email":"","affiliations":[],"preferred":false,"id":362174,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Opdyke, N.D.","contributorId":92678,"corporation":false,"usgs":true,"family":"Opdyke","given":"N.D.","email":"","affiliations":[],"preferred":false,"id":362177,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Tahirkheli, R.A.K.","contributorId":37889,"corporation":false,"usgs":true,"family":"Tahirkheli","given":"R.A.K.","email":"","affiliations":[],"preferred":false,"id":362175,"contributorType":{"id":1,"text":"Authors"},"rank":8}]}} ]}