Browsing by Subject "Geology"
Now showing items 1-20 of 55
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A high resolution, multi-proxy approach to reconstructing Arabian Sea Oxygen Minimum Zone dynamics
(2013)A new deep-sea core from the base of the Arabian Sea Oxygen Minimum Zone (OMZ) spanning the last glacial (75-10 ka) has been analyzed for changes in OMZ intensity. Processes maintaining the Arabian Sea OMZ are surface ... -
A new way to confirm meteorite impact produced planar features in quartz: combining Universal Stage and Electron Backscatter Diffraction techniques
(2010)As recognised from the geological record, meteorite impact events can have a severe influence on (local) geology, climate and life. Solid evidence for these events is therefore important to obtain. The most convincing ... -
A paleomagnetic solution for the age controversy in the Upper Molasse of the Northern Alpine Foreland Basin
(2013)– During the last two decades, research on the Western Paratethys and especially on the Northern Alpine Foreland Basin (Molasse) concentrated on improving the basin wide correlation because substantial uncertainties have ... -
Advanced Reservoir Characterisation for Geological Sequestration of CO2: Surat Basin Demonstration Project
(2013)It is generally accepted that underground geological storage of CO2 (GSC) in deep aquifers, is the option with the highest potential storage capacity. Detailed subsurface models with a high level of subsurface understanding ... -
Age and origin of Megabeds in the Tabernas basin (Upper Miocene, SE Spain)
(2012)- embargoed until 1 september 2017 - -
Age or paleoenvironment? What is the cause of the differences between two Early Miocene small-mammal assemblages from Kaplangı (Turkey)?
(2012)Two assemblages of small mammals near Kaplangı (Anatolia) are described to determine if their respective differences are due to a difference in palaeoenvironment, age, or both. The main species composing the assemblages ... -
An alternative method for estimating the porosity and the permeability of (potential) geothermal reservoirs using magnetotelluric data; A case study of the Sherwood Sandstone Group in the Lough Neagh Basin, Northern Ireland
(2013)Since traditional methods for estimating the hydraulic properties of reservoir rocks, such as laboratory analysis of core samples and pumping tests, are time-consuming, invasive and expensive, a method for the reliable ... -
Analysis of Rare Earth Element concentrations in barite (BaSO4).
(2012)Temperature and redox conditions during barite precipitation potentially provide information about levels of oxygen in the Archean (3.8-2.5 Ga) environment and the presence of early microbial life. Rare Earth Element (REE) ... -
Archean Rocks unraveled: an 'exclusive' first impression on paleomagnetism of deep-drilled rocks of the Onverwacht Suite, Barberton Greenstone Belt (SA)
(2011)Rocks from the 3.5-3.1 Ga Barberton Greenstone Belt (BGB), South Africa, may provide information about the earliest history of our Earth. In this period, early life started, plate tectonics as we know today may have started ... -
Behaviour of rare earth elements during water-rock interaction and alteration processes in volcanic lake systems
(2012)The rare earth elements are widely used to study processes in many different geological environments. Although their behaviour is particularly suitable for research on water-rock interactions, volcanic lakes have received ... -
Chemistry and fabric of olivine microstructures in cold, ultra-depleted spinel mantle wedge peridotite, Seve Nappe Complex (central Swedish Caledonides)
(2013)This thesis investigates the formation conditions of olivine microstructures in the Kittelfjäll spinel peridotite (KSP), a fragment of lithospheric mantle which occurs as an isolated body within high grade metamorphic ... -
Controls on the architecture of turbidite sandstone in MTD dominated settings; The Vocontian paleomargin, SE France
(2013)The Aptian succession of the Vocontian paleomargin (SE France) consists of marl-prone mass transport deposits, turbidite sandstone and pelagic marl. A detailed stratigraphic framework, which was established by previous ... -
Deformation history of anorthosite massifs: a comparison of Sognefjord and Tafjord, south west Norway
(2011)Anorthosite massifs are a common feature in several geological provinces in Norway. In this paper the deformation history of the anorthosite massifs in Sognefjord and Tafjord, south west Norway, will be investigated. Relics ... -
Delta and shelf clinoform development, the effect of sea level and sediment supply on geometry and time scales; an analogue flume model.
(2013)Recent years have experienced a bloom in 2D analogue flume modeling, due to the clear and simplified representation it gives on sedimentary systems. The difference in spatial and temporal scales between delta and shelf ... -
Detection of middle to late Holocene Icelandic cryptotephras in the Netherlands: tephra versus biogenic silica
(2012)Every volcano erupts ash that is characteristic for that volcano. When tephra is produced, prevailing winds can transport the tephra over large distances, where they are then deposited due to gravitational and/or precipitational ... -
Finnmarkian EMP monazite ages and PT calculations of high grade rocks in the Central Belt of the Seve Nappe Complex, northern Jämtland and southern Västerbotten, Sweden.
(2010)The Scandinavian Caledonides consists of a series of Nappe Complexes that were transported in early Paleozoic times, from west to east over the Baltic Shield. This Allochthonous Nappe Complex is subdivided from bottom to ... -
Finnmarkian Monazite EMP ages in the Central belt of the Seve Nappe, north Jämtland/south Västerbotten, Sweden
(2011)In this Msc thesis an age dating project is described on high grade gneisses of the Central Belt of the Seve Nappe Complex, Central Sweden. The age dating is done with an Electron Microprobe applied to monazites. The units ... -
First Evidence for Ultrahigh Pressure Metamorphism on Gossa, Western Gneiss Region, Norway
(2009)Ultrahigh pressure (UHP) metamorphism takes place in rock at depths within the coesite stability field. In the Western Gneiss Region (WGR) in Norway, three domains are present where UHP metamorphic rocks occur. In the ... -
Geochemical analysis of the marginal eastern basin facies of the German Wealden (Berriasian, Lower Cretaceous)
(2013)Organic-rich shales of the German Wealden, Lower Cretaceous, are a target for gas and oil shale exploration in Germany. Results of published organic petrographic investigations as well as oil shows and hydrocarbon gases ...