Results 51 to 60 of about 5,243 (171)

A depleted mantle source for Neoproterozoic continental rifting in the Seve Nappe Complex, Kebnekaise region, northern Swedish Caledonides

Frontiers in Earth Science
The Central Iapetus Magmatic Province (CIMP) is a large igneous province (LIP) emplaced in the Baltican and Laurentian paleocontinents that marks the onset of the Caledonian Wilson Cycle.
Riccardo Callegari, Riccardo Callegari, Abigail K. Barker, Christopher J. Barnes, Katarzyna Walczak, Grzegorz Ziemniak, Iwona Klonowska, Ellen Kooijman, Sabine Rousku, Karolina Kośmińska, Jarosław Majka, Jarosław Majka   +11 more
doaj   +1 more source

Structural, petrological and chemical analysis of syn-kinematic migmatites: insights from the Western Gneiss Region, Norway. [PDF]

, 2014
International audienceEvidence of melting is presented from the Western Gneiss Region (WGR) in the core of the Caledonian orogen, Western Norway and the dynamic significance of melting for the evolution of orogens is evaluated.
Andersen, Andersen, Andersen, Austrheim, Auzanneau, Bea, Bea, Beaumont, Bittner, Brown, Bryhni, Butler, Carignan, Castro, Cesare, Chen, Corfu, Cuthbert, Dobrzhinetskaya, Engvik, Fossen, Foster, Gao, Gibson, Gordon, Hacker, Hattori, Hermann, Hermann, Holness, Huang, Irifune, Johannes, Johnson, Keken, Kessel, Klein, Kohn, Korksakov, Krabbendam, Kretz, Kriegsman, Krogh, Kylander-Clark, Labrousse, Labrousse, Labrousse, Lang, Lenoir, Mørk, Mørk, Paterson, Patiño Douce, Patiño Douce, Patiño Douce, Pickering, Prouteau, Rapp, Roberts, Roberts, Roermund, Root, Rosenberg, Rosenberg, Rudnik, Sawyer, Sawyer, Schmidt, Schröter, Sizova, Smith, Solar, Spencer, Stern, Stöckhert, Sun, Terry, Teyssier, Tucker, Vanderhaeghe, Vernon, Vrijmoed, Vrijmoed, Wain, Wallis, Warren, Whitney   +86 more
core   +4 more sources

Laboratory‐Constrained Seismic Properties of the COSC‐2 Borehole, Scandinavian Caledonides: Implications for Crustal Anisotropy and Reflectivity

Journal of Geophysical Research: Solid Earth, Volume 130, Issue 12, December 2025.
Abstract Seismic surveys are essential for studying the Earth's subsurface. However, the interpretation of seismic surveys requires a link between field data and rock physical properties by linking laboratory‐derived data from drill core samples with borehole information and seismic images.
Markus Rast, Claudio Madonna, Nora Schweizer, Bjarne S. G. Almqvist, Jonas B. Ruh   +4 more
wiley   +1 more source

Traces of alum shale in the Finnish Caledonides of the Enontekiö Lapland

Fennia: International Journal of Geography, 1986
The existence of alum shale in the small Finnish sector of the Scandinavian Caledonides has been verified by chemical finds. Enhanced values for V and Mo (1050 and 450 ppm, respectively) together with more common tenors of C and U have been reported ...
Jyrki J Lehtovaara
doaj  

East Greenland Caledonides: stratigraphy, structure and geochronology: Reconnaissance Pb-Pb dating of single mineral phases by the step-leaching method: results from the Caledonides of East Greenland [PDF]

Geological Survey of Denmark and Greenland Bulletin, 2004
Reconnaissance Pb-Pb step-leaching analyses have been carried out on garnet and kyanite from the Krummedal supracrustal sequence in East Greenland, yielding respectively Neoproterozoic and Caledonian ages.
Thrane, Kristine
doaj  

Origin of Carboniferous sandstones fringing the northern margin of the Wales-Brabant Massif: insights from detrital zircon ages [PDF]

, 2015
A study of detrital zircon age populations in Namurian–Westphalian (Carboniferous) sandstones in the southern Central Pennine Basin of the UK has revealed considerable complexity in their provenance history.
Aitkenhead, Besly, Black, Bristow, Bristow, Brown, Brown, Buchwaldt, Cawood, Cawood, Chew, Chisholm, Chisholm, Chisholm, Chisholm, Cliff, Clift, Collinson, Compston, Condon, Draut, Evans, Feely, Feely, Friedrich, Gilligan, Glover, Hallsworth, Hallsworth, Hallsworth, Jonin, Kerr, Kinny, Leeder, Leng, Linnemann, Mange, McKerrow, Miller, Morton, Murphy, Noble, Paces, Patchett, Patchett, Peucat, Pharaoh, Pharaoh, Rippon, Schofield, Soper, Stephenson, Strachan, Stuart, Tera, Thorpe, Trewin, Tucker, Tyrrell, Verniers, Waters, Whalen, Williams, Yin, Ziegler   +64 more
core   +1 more source

The Tectonic, Thermal, and Temporal Controls on the Production of Lithium‐Enriched Melts

Geophysical Research Letters, Volume 52, Issue 21, 16 November 2025.
Abstract We present a new tectonically‐based method for understanding the mountain‐belt‐scale controls on the distribution of critical metals, applied to lithium ores. Lithium‐rich melts in collisional zones are produced by biotite‐breakdown reactions, so we analyze the tectonic “filters” that control whether underthrusting (meta‐)sediments reach ...
Alex Copley, Owen Weller
wiley   +1 more source

What Controls Finger‐Shaped Transformation Patterns? A Numerical Approach to Eclogitization

Geochemistry, Geophysics, Geosystems, Volume 26, Issue 11, November 2025.
Abstract Metamorphic transformations in subduction lithosphere are triggered by pressure and temperature changes occurring under stress. This anisotropic stress field can in turn be locally altered by the transformation pattern, as reactions induce significant changes of the material properties of the rocks.
A. Cochet, P. Yamato, M. Baïsset, T. Duretz, L. Labrousse   +4 more
wiley   +1 more source

Sedimentological constraints on the late Silurian history of the Highland Boundary Fault, Scotland : Implications for Midland Valley Basin development [PDF]

, 2015
Peer ...
Hartley, Adrian J., Leleu, Sophie
core   +1 more source

Secular Evolution of the Seismic Structure of Continental Crust, Archean to Present

Journal of Geophysical Research: Solid Earth, Volume 130, Issue 10, October 2025.
Abstract We summarize the seismic and density structure of continental crust as a function of crustal age and evaluate the secular changes in these physical properties. We subdivide the continental crust into six age provinces, from Archean to Mesozoic‐Cenozoic, and calculate the surface area, mean crustal thickness, volume, mass, and seismic velocity ...
Walter D. Mooney, Pablo Barrera‐Lopez, María Gabriela Suárez   +2 more
wiley   +1 more source