A5078358216- Geological and Geochemical Analysis
- High-pressure geophysics and materials
- Geochemistry and Geologic Mapping
- earthquake and tectonic studies
- Geological Studies and Exploration
- Geological and Geophysical Studies
- Geological Modeling and Analysis
- Methane Hydrates and Related Phenomena
- Geomagnetism and Paleomagnetism Studies
- Access Control and Trust
- Crystal Structures and Properties
- Hydrocarbon exploration and reservoir analysis
- Geology and Paleoclimatology Research
- Paleontology and Stratigraphy of Fossils
- Advanced Differential Equations and Dynamical Systems
- Mineralogy and Gemology Studies
- Polynomial and algebraic computation
- Service-Oriented Architecture and Web Services
- Commutative Algebra and Its Applications
- Geophysical and Geoelectrical Methods
- CO2 Sequestration and Geologic Interactions
- Scientific Research and Discoveries
- X-ray Diffraction in Crystallography
- Mechanical and Thermal Properties Analysis
- Soil Geostatistics and Mapping
Lund University
1999-2024
Stockholm University
2002-2008
Geological Survey of Sweden
1991
Baddeleyite is a reliable geochronometer for dating the crystallization of mafic and other silica‐undersaturated intrusive rocks. Its high U negligible initial Pb content enable precise age determinations with statistical errors few million years or less. The widespread use baddeleyite has, however, been limited by low in many samples difficulties isolating baddeleyite. We have developed new separation technique that utilizes differences transport velocity among grains varying size as they...
A localized dehydration zone, Söndrum stone quarry, Halmstad, SW Sweden, consists of a central, 1 m wide granitic pegmatoid dyke, on either side which extends 2·5–3 zone (650–700°C; 800 MPa; orthopyroxene–clinopyroxene–biotite–amphibole–garnet) overprinting local migmatized gneiss (amphibole–biotite–garnet). Whole-rock chemistry indicates that the was predominantly isochemical. Exceptions include [Y + heavy rare earth elements (HREE)], Ba, Sr, and F, are markedly depleted throughout zone....
The aim of this study was to investigate possible interactions between minerals and ectomycorrhizal (EM) mycelia. Fungal rhizomorphs growing in association with apatite and/or biotite were sampled both from a laboratory experimental system (Rhizopogon sp. Pinus muricata) mesh bags buried forest soil the field. elemental composition samples analyzed particle-induced X-ray emission (PIXE). Many EM associated systems contained larger amounts Ca (mean ranges 12 31 mg g(-1)) than similar...
Growth in the use of business process outsourcing and collaborative platforms is driving demand for organizations to selectively share identity information they maintain about their users with other partners. Widely accepted protocol such as Security Assertion Markup Language (SAML) are designed deliver single sign-on (SSO) security attributes, but although can gain significant value by using federated management techniques, continue face major implementation hurdles (such wanting scale from...
Abstract U–Pb dating of titanite from a mafic lens in the Mylonite Zone southwestern Sweden yields an almost concordant age c. 920 Ma. The formed during retrogression granulite-to amphibolite-facies rocks. Sources for Ti and Ca were Fe-Ti oxides relatively grossular-rich garnets, respectively. Deformation is contemporaneous with or post-dates growth titanite, which took place at temperatures above 550ÅC. obtained close to Sm-Nd isochron ages garnet-bearing granulite-facies mineral...
The ~31-km-wide Hiawatha structure, located beneath Glacier in northwestern Greenland, has been proposed as an impact structure that may have formed after the Pleistocene inception of Greenland Ice Sheet. To date we conducted 40Ar/39Ar analyses on glaciofluvial sand and U-Pb zircon separated from pebbles melt rock, all sampled immediately downstream Glacier. Unshocked rocks dates to ~1915 million years (Ma), consistent with felsic intrusions found local bedrock. data indicate Late Paleocene...
Given a strong deformation retract $M$ of an algebra $A$, there are several apparently distinct ways ([9],[19],[13],[24],[15],[18],[17]) constructing coderivation on the tensor coalgebra in such way that resulting complex is quasi isomorphic to classical (differential tor) [17] bar construction $A$. We show these methods equivalent and determined combinatorially by inductive formula first given very special setting [16]. Applications de Rham theory Massey products given.
Abstract The Kullaberg peninsula in NW Skåne renders km-long, continuous exposures of the Proterozoic crystalline basement. We report ion microprobe (SIMS) U–Pb zircon ages for six key lithologies at that constrain geological history SW Fennoscandia a considerable time period. Igneous three varieties gneiss granite yield 1694±7 Ma, 1693±7 Ma and 1663±14 same age range as orthogneisses further north crustal segment. Partial melting, manifested by formation pegmatite dykes veins, occurred...
Abstract A recently recognized, more than 10 km wide deformation zone (the Ullared Deformation Zone, UDZ) can be followed for at least 30 from the Mylonite Zone southeastwards into Eastern Segment of Sveconorwegian orogen SW Sweden. The affects a heterogeneous, high‐grade metamorphic gneiss complex, with locally preserved eclogite relics. is characterized by strong, mylonitic, gneissosity, subhorizontal or moderately E‐ ESE‐plunging stretching lineation. Deformational fabrics are related to...