Geology Scholarly Works: Recent submissions
Now showing items 21-40 of 247
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Permeability Prediction in Rocks Experiencing Mineral Precipitation and Dissolution: A Numerical Study
(American Geophysical Union, 2019-04-01)In this study, we focus on the electrical tortuosity‐based permeability model k = reff2/8F (reff is an effective pore size, and F is the formation factor) and analyze its applicability to rocks experiencing mineral ... -
Collision Chronology Along the İzmir‐Ankara‐Erzincan Suture Zone: Insights From the Sarıcakaya Basin, Western Anatolia
(American Geophysical Union, 2019-09-10)Debate persists concerning the timing and geodynamics of intercontinental collision, style of syncollisional deformation, and development of topography and fold‐and‐thrust belts along the >1,700‐km‐long İzmir‐Ankara‐Erzincan ... -
Variable secondary porosity modeling of carbonate rocks based on μ-CT images
(2019)As an essential carbonate reservoir parameter, porosity is closely related to rock properties. Digital rock physics (DRP) technology can help us to build forward models and find out the relationship between porosity and ... -
The Possible Transition From Glacial Surge to Ice Stream on Vavilov Ice Cap
(Wiley, 2019-11-21)Surge‐type glaciers typically undergo cyclical flow instability due to mass accumulation; however, some recent glacier surges have caused irreversible ice loss in a short period. At Vavilov Ice Cap, Russia, surge‐like ... -
Distinct Frontal Ablation Processes Drive Heterogeneous Submarine Terminus Morphology
(Wiley, 2019-10-10)Calving and submarine melt drive frontal ablation and sculpt the ice face of marine‐terminating glaciers. However, there are sparse observations of submarine termini, which limit estimates of spatially varying submarine ... -
An effaced horseshoe crab (Arthropoda: Chelicerata: Xiphosura) from the Upper Carboniferous of the Carnic Alps (Friuli, NE Italy)
(Università degli Studi di Milano (University of Milan), 2019-07)A carapace of a new horseshoe crab (Arthropoda: Chelicerata: Xiphosura) is described from the Upper Carboniferous (Kasimovian) Meledis Formation of the Carnic Alps, Friuli, Italy. It is named as Stilpnocephalus pontebbanus ... -
Mesophilic microorganisms build terrestrial mats analogous to Precambrian microbial jungles
(Nature Research, 2019-09-20)Development of Archean paleosols and patterns of Precambrian rock weathering suggest colonization of continents by subaerial microbial mats long before evolution of land plants in the Phanerozoic Eon. Modern analogues for ... -
Constraining the geothermal heat flux in Greenland at regions of radar-detected basal water
(Cambridge University Press, 2019-11-04)The spatial distribution of basal water critically impacts the evolution of ice sheets. Current estimates of basal water distribution beneath the Greenland Ice Sheet (GrIS) contain large uncertainties due to poorly constrained ... -
StraboSpot data system for structural geology
(Geological Society of America, 2019-03-05)StraboSpot is a geologic data system that allows researchers to digitally collect, store, and share both field and laboratory data. StraboSpot is based on how geologists actually work to collect field data; although initially ... -
Understanding drivers of antibiotic resistance genes in High Arctic soil ecosystems
(Elsevier, 2019-01-28)Soils in tropical and temperate locations are known to be a sink for the genetic potential of anthropogenic-driven acquired antibiotic resistance (AR). In contrast, accumulation of acquired AR is less probable in most Polar ... -
Significant contribution of small icebergs to the freshwater budget in Greenland fjords
(Nature Research, 2020-10-15)Icebergs represent nearly half of the mass loss from the Greenland Ice Sheet and provide a distributed source of freshwater along fjords which can alter fjord circulation, nutrient levels, and ultimately the Meridional ... -
A seismically induced onshore surge deposit at the KPg boundary, North Dakota
(National Academy of Sciences, 2019-04-01)The most immediate effects of the terminal-Cretaceous Chicxulub impact, essential to understanding the global-scale environmental and biotic collapses that mark the Cretaceous–Paleogene extinction, are poorly resolved ... -
First U-Pb zircon ages for late Miocene Ashfall Konservat-Lagersta¨tte and Grove Lake ashes from eastern Great Plains, USA
(Public Library of Science, 2018-11-08)This paper documents the first U-Pb zircon ages for Ashfall Fossil Beds (Nebraska, USA), a terrestrial Konservat-Lagersta¨ tte mass-death assemblage that is arguably the most diverse of its type and age. The Ashfall ... -
Application of fluvial scaling relationships to reconstruct drainage-basin evolution and sediment routing for the Cretaceous and Paleocene of the Gulf of Mexico
(Geological Society of America, 2018-02-28)Fluvial systems represent a key component in source-to-sink analysis of ancient sediment-dispersal systems. Modern river channels and channel-related deposits possess a range of scaling relationships that reflect drainage-basin ... -
Segmented strain accumulation in the High Himalaya expressed in river channel steepness
(Geological Society of America, 2018-03-12)We investigate segmentation of High Himalayan strain by cross-orogen structures separating western and eastern obliquely convergent sectors from a central orthogonally convergent sector, and evaluate the relationship between ... -
Validation of empirical source-to-sink scaling relationships in a continental-scale system: The Gulf of Mexico basin Cenozoic record
(Geological Society of America, 2018-01-26)Empirical scaling relationships between known deepwater siliciclastic submarine fan systems and their linked drainage basins have previously been established for modern to submodern depositional systems and in a few ancient, ... -
Dating Metasomatism: Monazite and Zircon Growth during Amphibolite Facies Albitization
(MDPI, 2018-04-29)We present coupled textural observations and trace element and geochronological data from metasomatic monazite and zircon, to constrain the timing of high-grade Na-metasomatism (albitization) of an Archean orthogneiss in ... -
Physical Explanation of Archie's Porosity Exponent in Granular Materials: A Process‐Based, Pore‐Scale Numerical Study
(American Geophysical Union, 2018-02-12)The empirical Archie's law has been widely used in geosciences and engineering to explain the measured electrical resistivity of many geological materials, but its physical basis has not been fully understood yet. In this ... -
Joint inversion of NMR and SIP data to estimate pore size distribution of geomaterials
(Oxford University Press, 2017-11-23)There are growing interests in using geophysical tools to characterize the microstructure of geomaterials because of the non-invasive nature and the applicability in field. In these applications, multiple types of ... -
PETROGRAPHY AND ENVIRONMENTAL INTERPRETATION OF TUFA MOUNDS AND CARBONATE BEDS IN THE JURASSIC NAVAJO SANDSTONE OF SOUTHEASTERN UTAH, U.S.A.
(Society for Sedimentary Geology, 2017-09-01)Carbonate deposits in the Jurassic Navajo Sandstone of Utah reflect deposition in interdune lakes and springs. Interdune-lake deposits consist of flat-lying carbonate units. Springs formed tufa mounds that are interpreted ...