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Articles 56851 - 56880 of 59364
Full-Text Articles in Entire DC Network
Geology And Hydrology Of The El Converto Cave-Spring System, Southwestern Puerto Rico, Barry F. Beck
Geology And Hydrology Of The El Converto Cave-Spring System, Southwestern Puerto Rico, Barry F. Beck
International Journal of Speleology
Whereas the North Coast Tertiary Limestones of Puerto Rico are classic karst locales, their southern counterparts are almost devoid of karst development. The El Convento Cave-Spring System is the most prominent feature of the only large scale karst area developed on the South Coast Tertiary limestones. The karst topography is localized on the middle Juana Diaz Formation, which is a reef facies limestone, apparently because of the high density and low permeability of this zone as compared to the surrounding chalks and marls. In the El Convento System a sinking ephemeral stream combines with the flow from two perennial springs …
Studies On The Abdominal Musculature Of The Subterranean Mysid, Lepidomysis Longipes (Pillai And Mariamma), C. N. Nath
Studies On The Abdominal Musculature Of The Subterranean Mysid, Lepidomysis Longipes (Pillai And Mariamma), C. N. Nath
International Journal of Speleology
The musculature of the hypogean mysid, Lepidomysis longipes (Pillai and Mariamma) is remarkably modified. It shows the absence of many muscles and poor development of others in the abdominal region. This is correlated with the subterranean nature of the animal.
Observations Sur Stenasellus Virei Dans Ses Biotopes Naturels (Crustacea Isopoda Asellota Des Eaux Souterraines), Guy Magniez
Observations Sur Stenasellus Virei Dans Ses Biotopes Naturels (Crustacea Isopoda Asellota Des Eaux Souterraines), Guy Magniez
International Journal of Speleology
Thanks to intensive exploration and to new methods for capturing aquatic underground fauna, 117 localities are now known for Stenasellus virei. The description of some typical biotopes suggests that the species lives as well in karstic waters as in phreatic ones, inside the different environment of the hydrogeological classification of subterranean waters. St. virei buchneri and St. v. hussoni are almost cavernicolous. St. v. angelieri is distributed in the underground waters of Catalonia. St. v. boui is located in the underflow of Salat river basin. St. v. virei is widely distributed in the alluvial water-level of Garonne and Ebro …
Un Nouvel Asellide Interstitiel D'Espagne Méridionale Bragasellus Boui N. Sp. (Crustacea Isopoda Asellota) Et Considérations Sur Les Genres Européens D'Asellides, Jean-Paul Henry, Guy Magniez
Un Nouvel Asellide Interstitiel D'Espagne Méridionale Bragasellus Boui N. Sp. (Crustacea Isopoda Asellota) Et Considérations Sur Les Genres Européens D'Asellides, Jean-Paul Henry, Guy Magniez
International Journal of Speleology
Description of a new, unpigmented and eyeless Asellid, belonging to the iberian genus Bragasellus Henry et Magniez, 1968. Bragasellus boui, n.sp., lives on the bottom of a river that is a tributary of Guadalquivir River (Southern Spain). Bragasellus, Proasellus, Stygasellus and Synasellus are four genuine phyletic lines of European Asellidae, all of them independent of each other, and the authors confirm their validity as true genera.
Un Diploure Japygidé Cavernicole Inėdit De Corse Dipljapyx Beroni N.Sp., J. Pages
Un Diploure Japygidé Cavernicole Inėdit De Corse Dipljapyx Beroni N.Sp., J. Pages
International Journal of Speleology
Dipljapyx beroni n.sp. has been collected from two caves in Corsica. From its antennae with 31 articles, chaetotaxia of urites and subcoxal organs well-characterized, it appears to be an endemic Corsican species, situated between D. humberti Grassi found in the western Alps, and D. italicus Silv. peculiar to the Italian Peninsula. It is closely related to the first of those two species. There is no morphologic feature indicating it as a troglophilic species.
Pseudoscorpions Cavernicoles De La Macédoine, B. P. M. Ćurčić
Pseudoscorpions Cavernicoles De La Macédoine, B. P. M. Ćurčić
International Journal of Speleology
A cavernicolous pseudoscorpion of the genus Neobisium Chamberlin 1930 is living in Kalina Dupka cave in the Bistra Highland of western Macedonia. This pseudoscorpion clearly differs from the other members of the subgenus Blothrus Schiodte 1849, and belongs to the new species N. (B.) princeps, the principal features of which are described in this study. The nearest relatives of this species are N. (B.) spelaeum (Schiodte) 1849, and N. (B.) stygium Beier 1931, both from Slovenian and Croatian caves. From chelal dentition N. (B.) princeps may be considered as the most primitive element of the princeps-stygium-spelaeum series. This new …
A New Species Of Sipuncula (Aspidosiphon Exiguus N.Sp.), Belonging To The Interstitial Fauna Of Marine Beaches Collected By Mr. L. Botosaneanu During The Second Cuban-Romanian Biospeleological Expedition To Cuba 1973, S. J. Edmonds
International Journal of Speleology
Aspidosiphon exiguous, a new species of Sipuncula, is decribed, belonging to the interstitial fauna of the beaches. The specimens were collected during the second Cuba-Romanian biospeleological expedition in 1973.
Subterranean Crustacea Decapoda Macrura Collected By Mr. L. Botosaneanu During The 1973 Cuban-Roumanian Biospeological Expedition To Cuba, L. B. Holthuis
Subterranean Crustacea Decapoda Macrura Collected By Mr. L. Botosaneanu During The 1973 Cuban-Roumanian Biospeological Expedition To Cuba, L. B. Holthuis
International Journal of Speleology
During the 1973 Cuban Romanian Biospeleological Expedition to Cuba 5 species of cavernicolous Decapod Crustacea were collected: the Palaemonidae Troglocubanus gibarensis Chace, T. eigenmanni (Hay) and Macrobrachium faustinum lucifugum new subspecies. The second of these species now is reported for the first time from Isla de Pinos. The third form proved to be a new subspecies of Macrobrachium faustinum (De Saussure), a freshwater shrimp which is widely distributed in the West Indies. The new subspecies is not only known from Cuba, but also material from Jamaica, Curacao and Bonaire is reported. A new locality is reported for Barbouria cubensis (Von …
Size And Growth Of The Eyes Of The Troglobitic Salamander Typhiotriton Spelaeus, Joseph C. Besharse, Ronald A. Brandon
Size And Growth Of The Eyes Of The Troglobitic Salamander Typhiotriton Spelaeus, Joseph C. Besharse, Ronald A. Brandon
International Journal of Speleology
The eyes of larval T. spelaeus grow by negative allometry, but in allometric coefficients they are not greatly different from E. lucifuga. The major differences in eye size, both absolute and relative to body size, between T. spelaeus and E. lucifuga are established prior Io the larval growth period. The eyes of T. spelaeus cease to grow at metamorphosis and are reduced in size thereafter. In addition, there is increased individual variability and bilateral asymmetry of eye size in adult T. spelaeus compared to both adult E. lucifuga and larval T. spelaeus. This variability, expressed as relative dispersion …
Free Amino Acids In A Cave Beetle Darlingtonea Kentuckensis Valentine (Coleoptera: Carabidae), R. J. Sperka
Free Amino Acids In A Cave Beetle Darlingtonea Kentuckensis Valentine (Coleoptera: Carabidae), R. J. Sperka
International Journal of Speleology
Free amino acids of Darlingtonea kentuckensis were investigated by two-dimensional, thin-layer chromatography on Silica Gel G. Thirteen amino acids which could be identifìed (alanine, glutamic acid, glycine, histidine, isoleucine and/or leucine, lysine, phenylalanine, proline, serine, threonine, tryptophan, tyrosine and valine) and seven unidentified ninhydrin-positive spots were found. Beta-Alanine, alpha-amino-butyric acid, arginine, aspartic acid, cystine, hydroxyproline and methionine were not detected. No difference was observed in the free amino acids with respect to sex of beetle, time after feeding and method of sample preparation.
A Field Study Of Infiltration On Various Agricultural Soils, Stephen J. Stephen
A Field Study Of Infiltration On Various Agricultural Soils, Stephen J. Stephen
Theses and Dissertations (Comprehensive)
The purpose of the study was to ascertain if infiltration and temperature varied significantly among the selected soil types of the Smithfield, Otonabee, Wendigo and Farmington Series. These data were gathered from field tests performed during the summer months in Ontario and Victoria Counties.
A stopwatch was used to measure the number of seconds that were required for 0.8 inches of water to disappear into the soil inside a 4 inch diameter single ring infiltrometer which had been placed one inch into the soil surface. The soil temperature was recorded at the same time.
The sites were chosen by stratified …
A Preliminary Investigation Of The Land Use Limitations Of The Major Landforms Along A Portion Of The Lincoln County Coast, Oregon, Richard Kent Mathiot
A Preliminary Investigation Of The Land Use Limitations Of The Major Landforms Along A Portion Of The Lincoln County Coast, Oregon, Richard Kent Mathiot
Dissertations and Theses
This study of a portion of Oregon's Lincoln County coast describes the physical limitations to land use of the various landforms in the study area. Seven major landform types comprise the study area: beaches, active dunes, stabilized dunes, marsh land and tidal flats, marine terraces, basaltic headlands, and uplands. Descriptions and evaluations of their physical characteristics, distribution, geologic and and engineering characteristics, and potentially hazardous processes are contained in the maps, figures, and text.
Environmental Geology Of The Marquam Hill Area, Roger Alan Redfern
Environmental Geology Of The Marquam Hill Area, Roger Alan Redfern
Dissertations and Theses
This work on Marquam Hill area in Portland, a relatively undeveloped urban hillside area, is a pilot study in which environmental factors are evaluated quantitatively in order to delineate limitations on development. The study was undertaken at the request of and in cooperation with the City of Portland Planning Commission and with the State of Oregon Department of Geology and Mineral Industries. Factors considered include various aspects of the land, vegetation and attitudes of inhabitants. Findings are not intended to satisfy need for individual site studies by qualified experts but should show where that expertise is needed.
Field data were …
Selenium In Nebraska's Groundwater And Streams, R.A. Engberg
Selenium In Nebraska's Groundwater And Streams, R.A. Engberg
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Petrogenetic And Trend Surface Analysis Of Hell Canyon Pluton, Montana, William M. Johanns
Petrogenetic And Trend Surface Analysis Of Hell Canyon Pluton, Montana, William M. Johanns
Masters Theses
I. Introduction
The purpose of this study is to ascertain the petrogensis of the Hell Canyon pluton through the use of standard petrographic techniques and three dimensional mineralogical variability trends. It is intended that this study will provide additional information to the ongoing investigations of the Boulder batholith sequence, of which this intrusion is a part.
The Boulder batholith is located in the Southeastern part of the Northern Rocky Mountains physiographic province in southwestern Montana. This province is typified by numerous rugged mountain ranges of which there are two distinct types. The Idahotype( Rocky Mountain Association of Geologists, 1972) mountains, …
Structure And Stratigraphy Of The Central Cimarron Range, Colfax County, New Mexico., Craig S. Goodknight
Structure And Stratigraphy Of The Central Cimarron Range, Colfax County, New Mexico., Craig S. Goodknight
Earth and Planetary Sciences ETDs
The Cimarron Range forms a southeastern extension of the southern Sangre de Cristo Mountains. The area mapped in this study lies mainly between Eagle Nest and Ute Park, New Mexico, and is centered around Cimarron Canyon.
Rocks ranging from Precambrian to Quaternary in age are exposed• - in the central Cimarron Range. Precambrian rocks in the core of the range consist mainly of moderately foliated, low- to medium-grade metamorphics intruded by faintly foliated bodies of meta-granodiorite and meta-diabase.
Approximately 4000 feet of sedimentary rocks ranging from the Sangre de Cristo Formation of Pennsylvanian-Permian age through the Poison Canyon Formation of …
Biostratigraphy Of The Type Yamhill Formation, Polk County, Oregon, Larry R. Gaston
Biostratigraphy Of The Type Yamhill Formation, Polk County, Oregon, Larry R. Gaston
Dissertations and Theses
One hundred and seventy-four species and varieties of fossil Foraminifera are recorded from thirty-eight localities in the Siletz River Volcanics, Yamhill and Nestucca Formations exposed along Mill and Gooseneck Creeks, in the Northern Coast Range of Oregon. Marginulina holmesi is described as new. The Foraminifera indicate that this sequence was deposited during late Ulatisian and Narizian time, in marine waters at bathyal or lower neritic depths, with cool surface temperatures. The Yamhill Formation can be correlated with Moody Shale member of the Toledo Formation and the Coaledo Formation of Oregon; the McIntosh and Aldwell Formations of Washington; and the upper …
Preliminary Reconnaissance Water Quality Survey Of The Buffalo National River, R. E. Babcock, H. C. Macdonald, E. E. Dale Jr., R. L. Meyer, Joe Nix, D. G. Parker, Eugene Schmitz
Preliminary Reconnaissance Water Quality Survey Of The Buffalo National River, R. E. Babcock, H. C. Macdonald, E. E. Dale Jr., R. L. Meyer, Joe Nix, D. G. Parker, Eugene Schmitz
Arkansas Water Resources Center Technical Reports
In accordance with Contract No. CX 700030105, dated 12 February 1973, the University of Arkansas , Water Resources Resear ch Center is submitting a "Preliminary Reconnaissance Water Quality Survey of the Buffalo National River." The Water Resources Research Center of Arkansas has supplied the necessary personnel and facil ities to perform a preliminary reconnaissance survey of the Buffalo National River of Arkansas with special emphasis placed on the establishment of both permanent and temporary benchmarks for water quality sampling. Preliminary water quality samples have been collected to make those chemical, physical, and biological analyses as defined by Mr . Roland …
Press Reports, Walter A. Lawrance
Upper Androscoggin River, Walter A. Lawrance
Upper Androscoggin River, Walter A. Lawrance
Walter Lawrance Papers
No abstract provided.
Computer Sheets, Walter A. Lawrance
Lower Androscoggin River, Walter A. Lawrance
Lower Androscoggin River, Walter A. Lawrance
Walter Lawrance Papers
No abstract provided.
Evolution Of Platt Shoals Northern North Carolina Shelf: Inferences From Areal Geology, Philip C. Sears
Evolution Of Platt Shoals Northern North Carolina Shelf: Inferences From Areal Geology, Philip C. Sears
OES Theses and Dissertations
The evolution of Platt Shoals, a complex ridge and trough system on the south side of the Albemarle Shelf Valley, was determined and the modern hydraulic regime was inferred. The methods used were surficial grain size, 11 vibracores, seismic profiling and bathymetric maps. Platt Shoals developed in a three step process. The first, step was the formation of a substrate of late Pleistocene regressive deposits from 15,000 to 30,000 yr B. P. The second step, occurring approximately 11,000 yr B. P., was the formation of estuary mouth shoals of the ancestral Albemarle River. Between 4,4.00 to 5,000 yr B. P., …
Fisheries Report No 13 - Results Of A Biological Survey Of The Shire Of Kent, Western Australia, N. L. Mckenzie
Fisheries Report No 13 - Results Of A Biological Survey Of The Shire Of Kent, Western Australia, N. L. Mckenzie
Fisheries Research Reports
The Department of Fisheries and Fauna is responsible for the conservation of the native fauna in Western Australia. The main approach to this problem has been the creation of reserves for "The Conservation of Flora and Fauna". These reserves, known as "Wildlife Sanctuaries", are controlled by the Western Australian Wild Life Authority - a Statutory Authority serviced by the Department.
The object of the acquisition programme is to develop a reserve system which will include, as far as possible, a full and permanent cross-section of the State's native floral and faunal assemblages and, at the same time, provide for the …
Uniformitarian Principle, Richard G. Hodgson
Spectral Irradiance In Nebraska Reservoirs And A New Instrument For Its Measurement, Gary D. Uphoff
Spectral Irradiance In Nebraska Reservoirs And A New Instrument For Its Measurement, Gary D. Uphoff
School of Natural Resources: Dissertations, Theses, and Student Research
No abstract provided.
A Study Of Shore Erosion At Seventeen Sites Along Eastern Lake Michigan, Walter George Fingleton
A Study Of Shore Erosion At Seventeen Sites Along Eastern Lake Michigan, Walter George Fingleton
Masters Theses
No abstract provided.
Geology Of Atwater Well Field Kalamazoo County, Michigan, John E. Malanchak
Geology Of Atwater Well Field Kalamazoo County, Michigan, John E. Malanchak
Masters Theses
No abstract provided.
Inventory Of Lake Studies In Maine, Charles F. Wallace Jr., James M. Strunk
Inventory Of Lake Studies In Maine, Charles F. Wallace Jr., James M. Strunk
Maine Collection
Inventory of Lake Studies in Maine
By Charles F. Wallace, Jr. and James M. Strunk
State Planning Office, Water Resources Planning Division, July 1973.
"Printed under Appropriation Number 4248.5 and financially assisted by planning grants from the United States Water Resources Council Title III funds."
Contents: Introduction / Investigating Agencies / Federal Agencies / State Agencies / Regional Planning Commissions and Economic Development Districts / Maine Colleges and Universities / Private / Other Private / Other / Appendices
Particle Size Distribution And Small-Scale Bed-Forms On Sand Waves, Chesapeake Bay Entrance, Virginia, John T. Wells
Particle Size Distribution And Small-Scale Bed-Forms On Sand Waves, Chesapeake Bay Entrance, Virginia, John T. Wells
OES Theses and Dissertations
The relationship between sediment texture and topography has been studied along five series of sand waves in Chesapeake Bay entrance, Virginia. Results indicate that two types of sand waves with reference to mean grain size are present: sand waves with coarse sediment on crests and fine in troughs, and sand waves with fine sediment on crests and coarse in troughs. Asymmetrical, migrating sand waves exhibit the first type; near-symmetrical, non-migrating sand waves exhibit the second type. In general, bimodal sediment is present on crests of migrating sand waves and in troughs of stationary sand waves. There is a progressive decrease …