Browsing Fakultät für Geowissenschaften und Geographie (inkl. GAUSS) by Referee "Pack, Andreas Prof. Dr."
Now showing items 21-28 of 28
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Fluorite (U-Th-Sm)/He thermochronology
(2016-07-01)The aim of my thesis is to establish an emerging and novel method in low-temperature thermochronology based upon the mineral fluorite. The new and until now rarely applied method, fluorite (U-Th-Sm)/He thermochronology ... -
The causes and effect of temporal changes in magma generation processes in space and time along the Central Andes (13°S – 25°S)
(2015-11-27)This thesis investigates the timing and causes of the transition between two different magmatic regimes during the evolution of the Central Andean uplift. The first volcanic regime is represented by Miocene lava shields, ... -
Geobiology of bituminous carbonates from the Ediacaran Shibantan Member (Dengying Formation, South China)
(2014-10-08)The Shibantan Member is one of only two known carbonate settings characterised by a 'typical' Ediacaran fossil association including Ediacara-type fossils. Aim of this project was a comprehensive geobiological characterisation ... -
Volatilitätskontrollierte Fraktionierung refraktär-lithophiler Elemente in Meteoriten und der Erde
(2014-08-14)During the condensation of the elements in the early solar system, volatility-controlled fractionations occurred. Such fractionations of refractory lithophile elements in individual chondrite components and between bulk ... -
The Influence of Fluorine, Chlorine and Water on the Rheology and Structure of Na2O-CaO-Al2O3-SiO2 Melts
(2014-05-21)This study investigates the influence of 1.6 to 14.5 mol% water, 1.1 to 18.3 mol% fluorine (F) and 0.5 to 1.4 mol% chlorine (Cl), alone and combined, on the structure and viscosity of peralkaline and peraluminous Na2O CaO ... -
Triple oxygen isotope variations in natural and anthropogenic carbon dioxide
(2013-03-19)The oxygen and carbon isotope composition (18O/16O and 13C/12C) of atmospheric carbon dioxide is an excellent tool to investigate the atmospheric CO2 cycle. In recent ... -
Triple oxygen (16O, 17O, 18O) and carbon (12C, 13C) isotope variations in bioapatite of small mammals – new insights concerning the reconstruction of palaeo‐CO2 concentrations and palaeotemperatures
(2013-02-25)The ratios among the stable isotopes of oxygen (16O, 17O, 18O) and carbon (12C, 13C) in biogenic apatite of mammal teeth and bones have the potential to provide insight into the isotopic composition of the respective oxygen ... -
Sauerstoffisotope zur Klärung der Herkunft nichtmetallischer Ausscheidungen (Clogging) beim Stranggießen von Stahl
(2008-03-03)Nonmetallic precipitates in steelmaking process are a process and a product problem. In Al-killed steel these precipitates are predominantly composed of alumina inclusions. These particles are deposited e.g. at the inner ...