Results 51 to 60 of about 162 (154)

Tracking Cu‐Fertile Sediment Sources via Multivariate Petrochronological Mixture Modeling of Detrital Zircons

Journal of Geophysical Research: Earth Surface, Volume 130, Issue 10, October 2025.
Abstract Whereas the ability to acquire petrochronological data from detrital minerals has exploded, development of tools to analyze and interpret the multivariate data sets has not kept pace. Herein, we present a case study, which applies the recently developed non‐negative Tucker‐1 decomposition (NNT1) method to a multivariate detrital zircon data ...
Joel E. Saylor, Nicholas Richardson, Naomi Graham, Robert G. Lee, Michael P. Friedlander   +4 more
wiley   +1 more source

Glacial landforms of northwest Saskatchewan

Journal of Maps, 2017
A comprehensive map of glacial landforms is presented for the area of northwest Saskatchewan, Canada. Remote sensing of 1-arc (∼30 m resolution) Shuttle Radar Topography Mission digital elevation models over an area of approximately 15,000 km2 were used ...
Sophie L. Norris, Martin Margold, Duane G. Froese   +2 more
doaj   +1 more source

Joint Inversion of Electromagnetic and Direct Current Resistivity Data Using Trust Regions. Application to Uranium Exploration in the Athabasca Basin

Geophysical Prospecting, Volume 73, Issue 8, October 2025.
ABSTRACT The Athabasca Basin (Saskatchewan, Canada) is a world‐class uranium mining province hosting high‐grade high‐tonnage deposits. Electromagnetic data and direct current resistivity data are essential tools to detect deep geoelectric structures associated with mineralization.
Ali Mohand‐Said, Guy Marquis, Serge Sambolian, Jean‐François Girard, Grant Harrison, Elodie Williard   +5 more
wiley   +1 more source

Dunes and Drumlins

, 2001
Dunes are landforms which occur when a turbulent fluid flow occurs above an erodible substrate. The most obvious example occurs in deserts, where the wind blows sand into a wide variety of different shapes (see Chap. 17 for many illustration of such dunes). Linear dunes, or ‘seifs’, are ridges which form parallel to the prevailing wind direction, while
openaire   +2 more sources

Subglacial processes at the fringe of the last Scandinavian Ice Sheet in central Poland derived from macro‐ and micro‐sedimentological proxies

Boreas, Volume 54, Issue 4, Page 711-728, October 2025.
Here we report on the properties of a glacial sediment succession including various till facies and some subglacial meltwater deposits from a site in central Poland close to the outermost extent of the Scandinavian Ice Sheet during the last glaciation.
Piotr Hermanowski, Jan A. Piotrowski
wiley   +1 more source

Late Holocene Glacier Dynamics in the Miyar Basin, Lahaul Himalaya, India

Geosciences, 2017
Detailed field mapping of glacial and paraglacial landforms and optical dating from these landforms are used to reconstruct the early Holocene glaciation in the semi-arid region of Miyar basin, Lahaul Himalaya.
Sanjay Deswal, Milap Chand Sharma, Rakesh Saini, Pritam Chand, Navin Juyal, Ishwar Singh, Pradeep Srivastava, Ajai, I.M. Bahuguna   +8 more
doaj   +1 more source

Subglacial landscape formation and sediment discharge: relating basal conditions to bedform dimensions and properties at Rutford Ice Stream, West Antarctica

Boreas, Volume 54, Issue 4, Page 672-686, October 2025.
Basal conditions that facilitate fast ice flow are still poorly understood and their parameterization in ice‐flow models results in high uncertainties in ice‐flow and consequent sea‐level rise projections. Direct observations of basal conditions beneath modern ice streams are limited due to the inaccessibility of the bed.
Rebecca Schlegel, Lucas K. Zoet, Adam D. Booth, Andrew M. Smith, Roger A. Clark, Alex M. Brisbourne   +5 more
wiley   +1 more source

Automated delineation and morphometry of unclassified subglacial bedforms

Boreas, Volume 54, Issue 4, Page 506-526, October 2025.
We present an automated tool for mapping and analysing subglacial bedforms using volumetric obscurance, without classification. Tested on ArcticDEM data, the method produces bedform outlines with 75% correspondence compared to manually digitized maps.
Sofyane Hesni, Paul Bessin, Edouard Ravier, Olivier Bourgeois, Jean Vérité, Jean‐François Buoncristiani   +5 more
wiley   +1 more source

Use of LiDAR to derive a new model of glacial hydro‐dynamic events shaping southern Ontario landscapes, Canada

Boreas, Volume 54, Issue 4, Page 590-624, October 2025.
High‐resolution LiDAR data with field validation of inferred southern Ontario ice stream terrains indicate that steady‐state ice streaming is difficult to reconcile with our observations. Rather, these new observations show strong evidence of significant fluvial scouring across the area in which meltwater sheet flow overtopped the landscape.
David R. Sharpe, Chris C. Smart
wiley   +1 more source

Morphology and sedimentology of murtooized terrain on the southern Fraser Plateau, British Columbia, Canada

Boreas, Volume 54, Issue 4, Page 625-648, October 2025.
Recent public releases of Light Detection and Ranging (LiDAR) data in south central British Columbia (BC), Canada have revealed several landforms resembling ‘murtoos’, previously identified across portions of Scandinavia. In this study, we investigate the morphology and sedimentology of these landforms, the first report of their kind associated with ...
Alexander D. Sodeman, Tracy A. Brennand
wiley   +1 more source