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Geology: Recent submissions
Now showing items 81-100 of 480
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Subglacial discharge‐driven renewal of tidewater glacier fjords
(American Geophysical Union, 2017-08-24)The classic model of fjord renewal is complicated by tidewater glacier fjords, where submarine melt and subglacial discharge provide substantial buoyancy forcing at depth. Here we use a suite of idealized, high‐resolution ... -
Near-glacier surveying of a subglacial discharge plume: Implications for plume parameterizations
(American Geophysical Union, 2017-06-03)At tidewater glaciers, plume dynamics affect submarine melting, fjord circulation, and the mixing of meltwater. Models often rely on buoyant plume theory to parameterize plumes and submarine melting; however, these ... -
Iceberg properties and distributions in three Greenlandic fjords using satellite imagery
(Cambridge University Press, 2017-05-03)Icebergs calved from tidewater glaciers represent about one third to one half of the freshwater flux from the Greenland ice sheet to the surrounding ocean. Using multiple satellite datasets, we quantify the first fjord-wide ... -
Laser Ablation Inductively Coupled Plasma Mass Spectrometry U-Pb Dating of Detrital and Magmatic Zircons of Glacial Diamictites and Pebbles in Late Ordovician Sediments of the Taurides and Southeast Anatolian Autochthon Belt, Turkey: Indications for Their Arabian-Nubian Provenance
(University of Chicago Press, 2017-02-01)Late Ordovician (Hirnantian) glacio-marine deposits in the Central and Eastern Taurides and Southeast Anatolian Autochthon Belt (SAAB) in Turkey are mainly composed of diamictites, subrounded granitic pebbles, and ... -
Making the most out of a hydrological model data set: Sensitivity analyses to open the model black‐box
(American Geophysical Union, 2017-08-21)In this work, we investigate methods for gaining greater insight from hydrological model runs conducted for uncertainty quantification and model differentiation. We frame the sensitivity analysis questions in terms of the ... -
Channel-belt scaling relationship and application to early Miocene source-to-sink systems in the Gulf of Mexico basin
(Geological Society of America, 2017-02-01)In past decades, numerous studies have focused on the alluvial sedimentary record of basin fill. Paleo–drainage basin characteristics, such as drainage area or axial river length, have received little attention, mostly ... -
Detrital-zircon records of Cenomanian, Paleocene, and Oligocene Gulf of Mexico drainage integration and sediment routing: Implications for scales of basin-floor fans
(Geological Society of America, 2017-10-02)This paper uses detrital zircon (DZ) provenance and geochronological data to reconstruct paleodrainage areas and lengths for sediment-routing systems that fed the Cenomanian Tuscaloosa-Woodbine, Paleocene Wilcox, and ... -
Tectonic Evolution of the Izmir-Ankara Suture Zone in Northwest Turkey using Zircon U-Pb Geochronology and Zircon Lu-Hf Isotopic Tracers
(University of Kansas, 2017-12-31)Detrital zircons from the Late Cretaceous Murdunu-Göynük forearc basin and the Paleogene Saricakaya foreland basin; part of the greater Central Sakarya Basin located along the Sakarya Zone of the Western Pontides were ... -
High-Frequency Shallow Seismic Reflection Characterization of Overburden at an Abandon Pb-Zn Mine Beneath U.S. Highway 69 in Treece, Kansas Using Seismic Imaging and Vp/Vs Ratio
(University of Kansas, 2017-12-31)Overburden at an abandoned Pb-Zn mine beneath U.S. Highway 69 in Kansas was evaluated using P- and S-wave seismic reflection methods to estimate Vp/Vs ratio. Drilling reports indicate the mine works have lateral spans of ... -
Effects of Sedimentologic and Stratigraphic Heterogeneity on Production in Carbonate Reservoirs: An Integrated Outcrop, Synthetic Geologic Modeling, and Flow Simulation Study
(University of Kansas, 2017-05-31)Most geoscientists recognize, characterize, and understand the many scales and types of heterogeneity in carbonate reservoirs; however, systematic quantitative assessment of the impact of this range of geological variations ... -
MICROMORPHOLOGICAL, STABLE ISOTOPE, MINERALOGICAL, GEOMICROBIAL, AND NMR ANALYSIS OF QUATERNARY CALCRETE FORMATION, PUERTO RICO
(University of Kansas, 2017-05-31)Pedogenic calcretes are widely used as proxy records for arid and semiarid paleoclimates, however they have been documented in tropical areas with precipitation up to 1400 mm/year. To improve our interpretation of environment ... -
Petrographic study of Kansas coals
(University of Kansas, 1951) -
Almost a spider: a 305-million-year-old fossil arachnid and spider origins
(The Royal Society, 2016-03-30)Spiders are an important animal group, with a long history. Details of their origins remain limited, with little knowledge of their stem group, and no insights into the sequence of character acquisition during spider ... -
A fossil whip-scorpion (Arachnida: Thelyphonida) from the Upper Carboniferous of the Carnic Alps (Friuli, NE Italy)
(University of Milan, 2016-03)A new and well-preserved fossil whip scorpion (Arachnida: Uropygi: Thelyphonida) is described from the Late Carboniferous of the Carnic Alps, Friuli, Italy. It is referred to Parageralinura marsiglioi n. sp. The new specimen ... -
First eurypterid from Italy: a new species of Adelophthalmus (Chelicerata: Eurypterida) from the Upper Carboniferous of the Carnic Alps (Friuli, NE Italy)
(University of Milan, 2013-07)The first eurypterid known from Italy is described, as Adelophthalmus piussii n. sp. It comes from the Upper Carboniferous of the Carnic Alps (Friuli, NE Italy). Relationships with related species are discussed. Adelophthalmids ... -
Crustaceans from bitumen clast in Carboniferous glacial diamictite extend fossil record of copepods
(Nature Publishing Group, 2010-08-10)Copepod crustaceans are extremely abundant but, because of their small size and fragility, they fossilize poorly. Their fossil record consists of one Cretaceous (c. 115 Ma) parasite and a few Miocene (c. 14 Ma) fossils. ... -
Discussions on the age of Daohugou fauna—evidence from invertebrates
(Elsevier, 2006)Volcanic tuff deposits near Daohugou village, Ningcheng County of Inner Monogolia have yielded many well-preserved fossils. Here we briefly introduce our recent findings of invertebrates from the Daohugou fauna: Mainly ... -
First fossil mesothele spider, from the Carboniferous of France
(Musee Dhistoire Naturelle, 1996)First fossil mesothele spider, from the Carboniferous of France. Eothele montceauensis n. gen., n. sp., is described from two specimens from the Upper Carboniferous (Stephanian) of Montceau-Ies-Mines,France, as the first ... -
Stratigraphy of Lower Mississippian rocks in southwestern Missouri
(University of Kansas, 1946) -
Pennsylvanian Lophophyllidid corals
(University of Kansas, 1946)