Results 51 to 60 of about 2,520 (206)

Temperatures in a sinking xenolith [PDF]

open access: yesEos, Transactions American Geophysical Union, 1937
The manuscript for this paper was not submitted.
openaire   +2 more sources

Early Cretaceous Surtseyan volcanoes of the Baño Nuevo Volcanic Complex (Aysén Basin, Eastern Central Patagonian Cordillera, Chile)

open access: yesGeologica Acta, 2010
Tens of Surtseyan tuff cones are exposed in the Río Coichel valley, between Ñireguao and Estancia Baño Nuevo (Southern Chilean Andes). The Early Cretaceous products of the submarine eruptions rest on, or are interbedded with, shallow marine sandstones of
A. DEMANT   +3 more
doaj  

Thinning and Heating of Laramide Continental Lower Crust Recorded by Zircon Petrochronology

open access: yesGeochemistry, Geophysics, Geosystems
Zircon grains from the metasedimentary lower crust of the Rio Grande Rift, New Mexico, preserve a metamorphic record of the transition from Laramide compression to Eocene extension.
J. H. Cipar   +4 more
doaj   +1 more source

Extensive Magmatic Heating of the Lithosphere Beneath the Hawaiian Islands Inferred From Salt Lake Crater Mantle Xenoliths

open access: yesGeochemistry, Geophysics, Geosystems, 2020
An ongoing challenge in studies of the oceanic upper mantle is how intraplate hotspots impact the thermal structure of the lithosphere. To address this issue at the Hawaiian hotspot, we analyze mineral compositions for a petrographically diverse suite of
Imani Guest   +3 more
doaj   +1 more source

Lithosphere Structure and Thermal Regime of the Upper Mantle along Baikal Rift Axis : Evidences from Deep-Seated Xenoliths [PDF]

open access: yes, 2010
application/pdfA detailed microprobe study has been carried out on several xenolith suites along the axial part of the Baikal rift system, including Oka (Sayan), Tunka, Hamar-Daban, and Udokan volcanic fields.
LITASOV, Konstantin   +4 more
core  

Segmented Moho Uplift and Implications for Magmatic Underplating Beneath the Datong Basin

open access: yesGeophysical Research Letters, Volume 53, Issue 18, 28 September 2026.
Abstract Understanding how the deep crust responds to coupled tectonic and magmatic processes is essential for deciphering intracontinental rifting. We apply high‐resolution passive‐source reverse time migration to teleseismic P‐wave receiver functions recorded by a dense seismic array to image the Moho beneath the Datong Basin. Our observations reveal
Chunlong Li   +6 more
wiley   +1 more source

New Data on Xenoliths and Megacrysts from Alkaline Basalts of Bartoy Volcanic Field (Baikal Region, Russia) [PDF]

open access: yes, 2010
application/pdfAnhydrous and amphibole-phlogopite-bearing peridotite and pyroxenite xenoliths were found in basanites of the Bartoy volcanic field about 100km south from the southern coast of the Baikal Lake.
OHTANI, Eiji   +5 more
core  

NanoSIMS mapping and LA-ICP-MS chemical and U–Th–Pb data in monazite from a xenolith enclosed in andesite (Central Slovakia Volcanic Field)

open access: yes, 2015
International audienceIn this study, we use NanoSIMS element and isotope ratio mapping and LA-ICP-MS trace element measurements to elucidate the origins of monazites from a restitic xenolith enclosed in a 13.5 ± 0.3 Ma andesitic lava (Slovakia).
Viala, M.   +7 more
core   +1 more source

Geophysical Investigation of a Thermal Field in Abu Dhabi, United Arab Emirates

open access: yesEarth and Space Science, Volume 13, Issue 9, September 2026.
Abstract In the Abu Dhabi Emirate, near Madinat Zayed and Liwa, studies have identified high geothermal gradients and high‐heat‐flow areas. Assessing the geothermal potential in this region requires a detailed mapping of subsurface geological formations and their thermal properties.
Hakim Saibi   +3 more
wiley   +1 more source

U–Pb isotopic ages from a granulite-facies xenolith from Partan Craig in the Midland Valley of Scotland

open access: yes, 1984
U–Pb isotopie data for zircons from a granulite-facies xenolith from a volcanic vent at Partan Craig in the southeastern part of the Midland Valley of Scotland display evidence of an early Proterozoic (>2·0 Ga) component.
M. Aftalion   +4 more
core   +1 more source

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