Results 101 to 110 of about 29,661 (201)

U-Pb zircon geochronology and evolution of some Adirondack meta-igneous rocks [PDF]

An update was presented of the recent U-Pb isotope geochronology and models for evolution of some of the meta-igneous rocks of the Adirondacks, New York.
Mclelland, J. M.
core   +1 more source

Zircon U-Pb geochronology and trace element dataset from the Southern Rocky Mountain Volcanic Field, Colorado, USA. [PDF]

Data Brief, 2022
Sliwinski JT, Guillong M, Lipman PW, Zimmerer MJ, Deering C, Bachmann O.   +5 more
europepmc   +1 more source

Topographic Development History of the Alaska Range [PDF]

, 2014
The overall goal of this project is to use variations in sediment source through time as a proxy for deciphering the uplift history of the Alaska Range (Fig. 1).
Davis, Kailyn N.
core  

Technical note: Investigation into the relationship between zircon structural damage and Pb mobility using chemical abrasion, SIMS, Raman spectroscopy, and atom probe tomography [PDF]

Geochronology
Chemical abrasion (CA), a two-step process of annealing and partial dissolution, is routinely applied to zircon grains prior to U–Pb geochronology to dissolve portions of the grains affected by Pb loss prior to analysis.
C. W. Magee Jr., L. Nasdala, R. Dubosq, R. Dubosq, B. Gault, B. Gault, B. Gault, S. Bodorkos   +7 more
doaj   +1 more source

Zircon U-Pb Geochronology from the Wakhan Corridor, NE Afghanistan [PDF]

, 2013
HKT-ISTP ...
Gärtner, A., Hartmann, Holger, Hofmann, M., Linnemann, U., Ratschbacher, Lothar, Stübern, Konstanze   +5 more
core  

Recycling Argon through Metamorphic Reactions: the Record in Symplectites [PDF]

, 2018
The 40Ar/39Ar ages of metamorphic micas that crystallized at high temperatures are commonly interpreted as cooling ages, with grains considered to have lost 40Ar via thermally-driven diffusion into the grain boundary network.
Allaz, Anderson, Anderson, Baxter, Beltrando, Berry, Blundy, Bryhni, Christopher S. McDonald, Clare J. Warren, Connolly, Cuthbert, Dale, Daniele Regis, de Sigoyer, Di Vincenzo, Dodson, Dransfield, Engvik, Eskola, Frost, Fuhrman, Gee, Gilotti, Godard, Groppo, Hacker, Hacker, Hacker, Hacker, Heinrich, Holland, Holland, Holland, Holland, Holland, Holland, Johnson, Kellett, Krogh, Kylander-Clark, Kylander-Clark, Labrousse, Li, Li, Lux, McDonald, Mulch, Peterman, Putlitz, Renne, Roberts, Root, Root, Sarah C. Sherlock, Schmidt, Schärer, Sherlock, Simon P. Kelley, Smith, Spencer, Tajcmanová, Terry, Terry, Tucker, Villa, Villa, Wain, Wain, Walsh, Walsh, Walsh, Warren, Warren, Warren, Watson, Wheeler, White, White, Whitney, Young, Young, Young   +82 more
core   +2 more sources

Geological processes shaping freshwater biodiversity: a synthesis of global evidence

Biological Reviews, Volume 101, Issue 3, Page 1568-1581, June 2026.
ABSTRACT Recent genomic data highlight the key roles of geological processes in shaping the diversification and biogeography of freshwater lineages. Specifically, physical processes such as tectonic uplift, erosion, glaciation, lake formation, and sea‐level fluctuation contribute extensively to the evolution of biotic diversity within and among ...
Jonathan M. Waters, Christopher P. Burridge, David Craw, James S. Albert   +3 more
wiley   +1 more source

Supercritical‐flow structures in a Cretaceous submarine channel–lobe transition zone, Point Loma Formation, California

The Depositional Record, Volume 12, Issue 3, June 2026.
We document meter‐scale antidune and cyclic‐step deposits in channel–lobe transition zone (CLTZ) deposits of the Upper Cretaceous Point Loma Formation in San Diego, California. These results provide new insights into sediment transport dynamics in CLTZ environments, which are critical for understanding reservoir connectivity and heterogeneity in ...
Luthfi Saifudin, Zane Jobe, Arnoud Slootman, Mary Carr, Piret Plink‐Björklund   +4 more
wiley   +1 more source

Neoproterozoic ultramafic and mafic magmatism in the Eastern Cordillera of the central peruvian Andes: the Tapo Massif [PDF]

, 2010
A highly dismembered assemblage of ultramafic and mafic rocks is exposed in the Eastern Cordillera of the Central Peruvian Andes, extending along a discontinuous NW-SE belt over some 250 km between 12° and 9° S of latitude.
Acosta, Jorge, Castroviejo Bolibar, Ricardo, Pereira, Eurico, Rodrigues, Jose F., Tassinari, Colombo G.   +4 more
core   +2 more sources

Loess Studies in Aotearoa New Zealand

New Zealand Journal of Geology and Geophysics, Volume 69, Issue 2, June 2026.
Loess in Aotearoa New Zealand (ANZ) has been studied since its first documented recognition (on Banks Peninsula) in 1878 by Julius von Haast. A decade later, John Hardcastle revealed that southern ANZ loess was both glacial in origin and contained signals of past climates.
Brent V. Alloway, David J. Lowe, Bradley J. Pillans, Peter C. Almond, Alan S. Palmer   +4 more
wiley   +1 more source