Auflistung Geologie nach Titel
Anzeige der Dokumente 609-628 von 931
-
Observations on Astraeospongium meniscum (Roemer, 1948) from the Silurian of western Tennessee; constructional morphology and palaeobiology of the Astraeospongiidae (Calcarea, Heteractinellidae)
Mehl, Dorte;
(Berliner geowissenschaftliche Abhandlungen : Reihe E, 1996)
Astraeospongium is found to form secondary calcareous basal skeletons and thus may be attributed to the morphological grouping "coralline sponges". In A. meniscum, a bowl-shaped sponge with a massive skeleton of octactins, ... -
Oceanic anoxic event (OAE) 1b - high resolution geochemical studies, Mazagan Plateau and the Vocontian Basin
(Univ. Köln, 2009)Während der Kreide wurden zahlreiche Störungen des globalen Kohlenstoffkreislaufes aufgezeichnet. Diese Störungen führten zu organisch reichen Ablagerungen, den sogenannten ozeanischen anoxischen Ereignissen (OAEs). Der ... -
Offshore Freshened Groundwater in Continental Margins
; ; ; ; ; ; ; ; ; ; ; ; ; ; ; Martin‐Nagle, Renée; ; ; ; ; Trembath‐Reichert, Elizabeth; ; ; (Reviews of Geophysics, 2021-01-04)
First reported in the 1960s, offshore freshened groundwater (OFG) has now been documented in most continental margins around the world. In this review we compile a database documenting OFG occurrences and analyze it to ... -
ogs5py: A Python‐API for the OpenGeoSys 5 Scientific Modeling Package
Müller, Sebastian; Zech, Alraune; (Groundwater, 2020-06-16)
High‐performance numerical codes are an indispensable tool for hydrogeologists when modeling subsurface flow and transport systems. But as they are written in compiled languages, like C/C++ or Fortran, established software ... -
On nanoscale metallic iron for groundwater remediation.
; Caré, S. (Journal of hazardous materials, 2010-10-15)
-
On the mechanism of microbe inactivation by metallic iron
(Journal of Hazardous Materials, 2011)
This letter challenges the concept that the metallic iron (Fe0) surface contributes directly to the process of micro-organism inactivation in aqueous solutions. It is shown that any antimicrobial properties of Fe0 is related ... -
On the operating mode of bimetallic systems for environmental remediation
(Journal of Hazardous materials, 2008)
This letter challenges the concept that Fe0/Me0 bimetallic systems enhance contaminant reduction on Me0 surfaces. It is shown on a pure thermodynamic perspective that any enhancement of contaminant reduction by Fe0 in the ... -
On the path to the digital rock physics of gas hydrate-bearing sediments – processing of in situ synchrotron-tomography data
Sell, Kathleen;; Falenty, Andrzej; Chaouachi, Marwen; Haberthür, David; ; Kuhs, Werner F.; (Solid Earth, 2016)
-
On the Role of Rheological Memory for Convection‐Driven Plate Reorganizations
; (Geophysical Research Letters, 2022-09-21)
Understanding the temporal variability of plate tectonics is key to unraveling how mantle convection transports heat, and one critical factor for the formation and evolution of plate boundaries is rheological “memory,” ... -
On the Sensitivity of the Devonian Climate to Continental Configuration, Vegetation Cover, Orbital Configuration, CO 2 Concentration, and Insolation
; ; ; (Paleoceanography and Paleoclimatology, 2019)
During the Devonian (419 to 359 million years ago), life on Earth witnessed decisive evolutionary breakthroughs, most prominently the colonization of land by vascular plants and vertebrates. However, it was also a period ... -
On the suitability of admixing sand to metallic iron for water treatment
(International Journal of Environmental Pollution and Solutions, 2013)
This communication clarifies the relationships between sand addition and the sustainability of iron/water systems for environmental remediation. It is shown that any enhanced contaminant removal in an iron/sand/water ... -
On the temperature dependence of H-U iso in the riding hydrogen model
(Acta Crystallographica Section A Foundations and Advances, 2014)The temperature dependence of H-Uiso in N-acetyl-l-4-hydroxyproline monohydrate is investigated. Imposing a constant temperature-independent multiplier of 1.2 or 1.5 for the riding hydrogen model is found to be inaccurate, ... -
On the Validity of Specific Rate Constants (kSA) in Fe0/H2O Systems
(Journal of Hazardous Materials, 2008)
The validity of the specific reaction rate constants (k(SA)) in modelling contaminant removal in Fe-0/H2O systems is questioned. It is shown that the current k(SA)-model does not consider the large reactive surface area ... -
Opportunities and Challenges for Paleoaltimetry in “Small” Orogens: Insights From the European Alps
; Ehlers, T. A.; Mutz, S. G.; ; Krsnik, E.; (Geophysical Research Letters, 2020-02-10)
Many stable isotope paleoaltimetry studies have focused on paleoelevation reconstructions of orogenic plateaus such as the Tibetan or Andean Plateaus. We address the opportunities and challenges of applying stable isotope ... -
Optimising the Design of Fe0-Based Filtration Systems for Water Treatment: The Suitability of Porous Iron Composites
Rahman, Mohammad Azizur; Karmakar, Shyamal; Salama, Heba; Gactha-Bandjun, Nadège; Btatkeu, Brice Donald; (Journal of Applied Solution Chemistry and Modeling, 2013-08-31)
This study assessed the functionality of metallic iron (Fe0) filtration systems using porous iron composite (PIC) as an alternative to granular Fe0/aggregate mixtures. The usage of PIC for water treatment has many challenges ... -
Optimized extraction of dimension stone blocks
(Environmental Earth Sciences, 2010)The profitable production of dimension stone mainly depends on the extractable block size. The regularity and volume of the blocks are of critical importance, and are controlled by the three-dimensional pattern of the ... -
Organic molecular markers and signature from wood combustion particles in winter ambient aerosols: aerosol mass spectrometer (AMS) and high time-resolved GC-MS measurements in Augsburg, Germany
(Atmospheric Chemistry and Physics, 2012)The impact of wood combustion on ambient aerosols was investigated in Augsburg, Germany during a winter measurement campaign of a six-week period. Special attention was paid to the high time resolution observations ... -
Orogen-scale transpression accounts for GPS velocities and kinematic partitioning in the Southern Andes
; ; (Communications Earth & Environment, 2021-08-19)
The Southern Andes are regarded as a typical subduction orogen formed by oblique plate convergence. However, there is considerable uncertainty as to how deformation is kinematically partitioned in the upper plate. Here we ... -
Os, Sr, Nd, Pb, O isotope and trace element data from the Ferrar flood basalts, antarctica: evidence for an enriched subcontinental lithospheric source
Molzahn, M.; Reisberg, L.; (Earth and Planetary Science Letters, 1996)
Os, Sr, Nd, Pb and O isotopes and trace element data are reported for basaltic andesite and andesite whole rocks and, in part, for selected mineral separates from the Jurassic Ferrar flood basalt province. Radiogenic Sr ... -
Overcoming the Model‐Data‐Fit Problem in Porous Media: A Quantitative Method to Compare Invasion‐Percolation Models to High‐Resolution Data
; ; ; ; (Water Resources Research, 2021-07-13)
Invasion percolation (IP) models offer a computationally inexpensive way to simulate multiphase flow in porous media, but only very few studies have compared their results to actual laboratory experimental image data. One ...
