Blar i Department of Earth Science på tittel
Viser treff 591-610 av 959
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The onset of flysch sedimentation in the Kaoko Belt (NW Namibia) – Implications for the pre-collisional evolution of the Kaoko–Dom Feliciano–Gariep orogen
(Peer reviewed; Journal article, 2017-09)Detrital zircon provenance study of a metamorphosed sedimentary succession in the eastern part of the Kaoko Belt in Namibia has revealed two distinct sources for the Neoproterozoic sedimentation along the southwestern Congo ... -
Ophiolites of the Central Asian Orogenic Belt: Geochemical and petrological characterization and tectonic settings
(Peer reviewed; Journal article, 2019)We present a compilation of published data (field, petrography, ages and geochemistry) from 73 ophiolitic complexes of the Central Asian Orogenic Belt. The ophiolitic complexes, ranging in age from Neoproterozoic to Triassic, ... -
The origin of large varioles in flow-banded pillow lava from the Hooggenoeg Complex, Barberton Greenstone Belt, South Africa
(Peer reviewed; Journal article, 2011)Exceptionally well-preserved pillowed and massive phenocryst-free metabasaltic lava flows in the uppermost part of the Palaeoarchaean Hooggenoeg Complex of the Barberton Greenstone Belt exhibit both flow banding and large ... -
Orogenesis from bottom to top – Investigating the geodynamics of mountain building using coupled thermo-mechanical-surface-process models
(Doctoral thesis, 2021-03-10)The objective of this project is to The objective of this project is to advance our understanding of mountain building processes in different plate tectonic settings and with specific focus on the interaction between surface ... -
Outcrop-scale fracture analysis and seismic modelling of a basin-bounding normal fault in platform carbonates, central Italy
(Journal article; Peer reviewed, 2022)Faults are characterized by a complex internal architecture. In carbonates, the geometry, attitude, and distribution of fault-related fractures and subsidiary faults can largely affect the petrophysical properties and hy ... -
Overprinting translational domains in passive margin salt basins: insights from analogue modelling
(Peer reviewed; Journal article, 2019-08-02)Current models of gravitational tectonics on the structural styles of salt-influenced passive margins typically depict domains of upslope extension and corresponding downslope contraction separated by a mid-slope domain ... -
An overview of the Upper Palaeozoic-Mesozoic stratigraphy of the NE Atlantic region
(Peer reviewed; Journal article, 2017)This study describes the distribution and stratigraphic range of the Upper Palaeozoic–Mesozoic succession in the NE Atlantic region, and is correlated between conjugate margins and along the axis of the NE Atlantic rift ... -
PaCTS 1.0: a crowdsourced reporting standard for paleoclimate data
(Journal article; Peer reviewed, 2019-09)The progress of science is tied to the standardization of measurements, instruments, and data. This is especially true in the Big Data age, where analyzing large data volumes critically hinges on the data being standardized. ... -
Palaeo-productivity record from Norwegian Sea enables North Atlantic Oscillation (NAO) reconstruction for the last 8000 years
(Journal article; Peer reviewed, 2020)The North Atlantic Oscillation is the dominant atmospheric driver of North Atlantic climate variability with phases corresponding to droughts and cold spells in Europe. Here, we exploit a suggested anti-correlation of North ... -
Paleoceanography and paleoclimate in the Nordic Seas and the northern North Atlantic during the last 22 000 years
(Doctoral thesis, 2006-09-01)The paleoceanography of the Nordic Seas and the northern North Atlantic during glacial and deglacial times was studied, using oxygen isotopes and Mg/Ca of foraminifera. The specific objectives are listed below: 1) Sea ... -
Paleoclimate changes inferred from stable isotopes and magnetic properties of organic-rich lake sediments in Arctic Norway
(Peer reviewed; Journal article, 2011-03-22)Stable isotope measures in organic matter are frequently used as indicators of past climate change. Although such analyses can provide valuable information, there is considerable uncertainty associated with studies of ... -
Paleokarst reservoir modelling - A concept-driven approach
(Doctoral thesis, 2021-08-20)A significant proportion of the world's hydrocarbon production comes from paleokarst reservoirs. Although these reservoirs boast some of the most productive wells in oil history, the recovery factor is relatively low ... -
Paleomagnetisk bestemmelse av lokale blokkrotasjoner ved Izmir, Tyrkia
(Master thesis, 2010-09-03)Dagens Tyrkia ligger midt i sonen hvor den Arabiske- og Afrikanske platen kolliderer med den Eurasiske platen. Kollisjonen har ført til at den Anatoliske mikroplaten blir "presset" vestover, og ut i Egeerhavet, som igjen ... -
Paleomagnetiske undersøkingar av dei ediacariske Stappogjedde og Mortensnes formasjonane, Varangerhalvøya, Finnmark
(Master thesis, 2012-05-19)Det tilgjengelege paleomagnetiske datagrunnlaget frå Baltica er mangelfullt og knapt i sein neoptroterozoisk tid, og gjev eit forvirrande bilete av paleogeografien til Baltica. Dette har ført til teoriar om raske ... -
Palynological dating of the upper part of the De Geerdalen Formation on central parts of Spitsbergen and Hopen
(Master thesis, 2013-05-31)The Late Triassic is the most problematic period in terms of resolution and age control. The period spans about 36 million years and consists of three stages - Carnian, Norian and Rhaetian. Only four clusters of radiometric ... -
Passive seismic recording of cryoseisms in Adventdalen, Svalbard
(Journal article; Peer reviewed, 2021)A series of transient seismic events were discovered in passive seismic recordings from 2-D geophone arrays deployed at a frost polygon site in Adventdalen, Svalbard. These events contain a high proportion of surface wave ... -
Permian-Triassic tectonic-stratigraphic evolution of the Stord Basin, northern North Sea
(Master thesis, 2016-08-19)The Stord Basin is one of the less explored areas of the northern North Sea, hence the Permian- Triassic tectono-stratigraphic evolution of the basin is not well known. This MSc thesis aims to use available 2D seismic and ... -
Persistence of arctic-alpine flora during 24,000 years of environmental change in the Polar Urals
(Peer reviewed; Journal article, 2019-12-23)Plants adapted to extreme conditions can be at high risk from climate change; arctic-alpine plants, in particular, could “run out of space” as they are out-competed by expansion of woody vegetation. Mountain regions could ... -
Pervasive cold ice within a temperate glacier – implications for glacier thermal regimes, sediment transport and foreland geomorphology.
(Peer reviewed; Journal article, 2019-03-07)This study suggests that cold-ice processes may be more widespread than previously assumed, even within temperate glacial systems. We present the first systematic mapping of cold ice at the snout of the temperate glacier ...