Results 41 to 50 of about 1,684 (203)

Key New Evidence for the Hainan Mantle Plume Head: Ongoing Formation of a Large Igneous Province?

Geochemistry, Geophysics, Geosystems
The process‐based surface magmatic expression of mantle plumes is typically a large igneous province (LIP) induced by the mantle plume head, followed by subsequent age‐progressive volcanic tracks resulting from plate drifting above the plume tail ...
F. Yang, X. L. Huang, L. Liu, Y. G. Xu, Y. Hua, P. L. He, L. Zhang, W. F. Zhang, Y. Yu, H. Y. Li   +9 more
doaj   +1 more source

Putting the Femme in Feminist: Trans Feminism and the ‘Male Lesbian’ in the American Second Wave

Gender &History, EarlyView.
ABSTRACT A slur, a joke or a post‐structuralist case of mistaken identity. To the extent that the male lesbian has been discussed, she has figured dismissively. Yet throughout the period historicised as American feminism's second wave, potentially thousands of trans femmes organised under this identity. Despite being entirely overlooked in scholarship,
Aino Pihlak, Emily Cousens
wiley   +1 more source

Cuttings, Combings, Fettlings and Flock: Gender and Australian Wool ‘Waste’, 1900–1950

Gender &History, EarlyView.
ABSTRACT As Australia's wool industry produced vast amounts of fine fleece from the nineteenth century, the wool processing and clothes manufacturing industries generated waste – products like cuttings, combings, fettlings and flock. Salvaged and then sold to waste merchants, these and other materials had a second life.
Lorinda Cramer
wiley   +1 more source

The origin and implications of primordial helium depletion in the Afar mantle plume

Communications Earth & Environment
Mantle plumes are responsible for the Earth’s largest volcanic provinces. In the prevailing paradigm, the deep mantle is less degassed than convecting shallow mantle, implying that plume-derived lavas have higher concentrations of primordial volatiles ...
Ugur Balci, Finlay M. Stuart, Jean-Alix Barrat, Antoniette G. Grima, Froukje M. van der Zwan   +4 more
doaj   +1 more source

Are mantle plumes adiabatic? [PDF]

Earth and Planetary Science Letters, 2001
Abstract The issue concerning the state of adiabaticity of mantle plumes has been examined in a cartesian two-dimensional box with an aspect-ratio of six. We have investigated in the quasi steady-state regime high Rayleigh number convection with both depth-dependent viscosity and thermal expansivity for both the Boussinesq and the extended Boussinesq
Ctirad Matyska, David A. Yuen
openaire   +1 more source

Progressive prosecution in context: Examining the impact of prosecutorial administration change on case‐processing patterns and racial disparities

Criminology &Public Policy, EarlyView.
Abstract Research Summary Using administrative case‐processing records and interviews with prosecutors, we examine how a change in prosecutorial administration impacts charging and plea‐bargaining practices and racial and ethnic disparities in two jurisdictions led by progressive prosecutors who replaced more traditional administrations.
Rachel Bowman, Belén Lowrey‐Kinberg, Jon B. Gould   +2 more
wiley   +1 more source

Long‐Lived Source Heterogeneities in the Galapagos Mantle Plume

Geochemistry, Geophysics, Geosystems, 2018
Mantle plume‐derived melts provide a unique glimpse into the chemical heterogeneity of the deep mantle. However, the exact processes involved in forming and sampling lower mantle heterogeneities remain unresolved and thus, require further investigation ...
Esteban Gazel, Jarek Trela, Michael Bizimis, Alexander Sobolev, Valentina Batanova, Cornelia Class, Brian Jicha   +6 more
doaj   +1 more source

Narrow, Fast, and “Cool” Mantle Plumes Caused by Strain‐Weakening Rheology in Earth's Lower Mantle

Geochemistry, Geophysics, Geosystems, 2022
The rheological properties of Earth's lower mantle are key for mantle dynamics and planetary evolution. The main rock‐forming minerals in the lower mantle are bridgmanite (Br) and smaller amounts of ferropericlase (Fp).
A. J. P. Gülcher, G. J. Golabek, M. Thielmann, M. D. Ballmer, P. J. Tackley   +4 more
doaj   +1 more source

Queen Anne's Wardrobe: Fashion, Sartorial Politics, and the Representational Strategies of the Last Stuart Queen

Journal for Eighteenth-Century Studies, EarlyView.
Abstract The final Stuart monarch, Queen Anne, has often been overlooked in studies of visual and material culture, particularly of fashion and dress. This article is the first to undertake a qualitative and quantitative analysis of the wardrobe accounts of Queen Anne, situating her consumption within the context of the eighteenth‐century fashion ...
Sarah A. Bendall
wiley   +1 more source

meltPT: A Python package for basaltic whole-rock thermobarometric analysis with application to Hawaiʻi

Volcanica, 2023
Quantifying the depths and temperatures from which igneous rocks are derived is an important step in understanding volcanic, magmatic and mantle processes.
Fergus McNab, Patrick Ball
doaj   +1 more source