Results 101 to 110 of about 15,041 (300)

Neoproterozoic subduction along the Ailaoshan zone, South China : geochronological and geochemical evidence from amphibolite [PDF]

open access: yes, 2014
This study was supported by China Natural Science Foundation (41190073 and 41372198), National Basic Research Program of China (2014CB440901) and Natural Environment Research Council (grant NE/J021822/1).Lenses of amphibolites occur along the Ailaoshan ...
Cai, Yongfeng   +6 more
core   +1 more source

Initiation of Subduction Along Oceanic Transform Faults: Insights From Three-Dimensional Analog Modeling Experiments

open access: yesFrontiers in Earth Science, 2018
Three-dimensional analog experiments are employed to explore how self-sustaining subduction may initiate along an oceanic transform fault. The models include a realistic spatial distribution of plate thickness, strength, and buoyancy of the lithosphere ...
David Boutelier, David Beckett
doaj   +1 more source

The Role of N2 as a Geo-Biosignature for the Detection and Characterization of Earth-like Habitats [PDF]

open access: yes, 2019
Since the Archean, N2 has been a major atmospheric constituent in Earth's atmosphere. Nitrogen is an essential element in the building blocks of life, therefore the geobiological nitrogen cycle is a fundamental factor in the long term evolution of both ...
Cubillos, Patricio E.   +6 more
core   +2 more sources

Subduction initiation by thermal–chemical plumes: Numerical studies

open access: yesPhysics of the Earth and Planetary Interiors, 2008
Abstract Prior suggestions for the initiation of subduction have included sediment loading, compression, and plate reconfiguration as potential triggers. Here, we investigate the possibility of subduction initiation by the interaction of the lithosphere with a buoyant mantle plume.
Ueda, K., Gerya, T., Sobolev, S.
openaire   +4 more sources

Deconvolving the pre-Himalayan Indian margin – tales of crustal growth and destruction [PDF]

open access: yes, 2018
The metamorphic core of the Himalaya is composed of Indian cratonic rocks with two distinct crustal affinities that are defined by radiogenic isotopic geochemistry and detrital zircon age spectra.
Ahmad   +132 more
core   +4 more sources

Forearc Variability and the Geochemical Diversity of Suprasubduction Zone Ophiolites: Insights From the Leka Ophiolite Complex, Norway

open access: yesGeochemistry, Geophysics, Geosystems
New whole‐rock major and trace element geochemistry from the Leka Ophiolite Complex in Norway is presented and compared to the geochemical evolution and proposed tectonomagmatic processes recorded in the Izu‐Bonin‐Mariana system.
Naomi A. Becker   +5 more
doaj   +1 more source

BONINITES THROUGH TIME AND SPACE: PETROGENESIS AND GEODYNAMIC SETTINGS

open access: yesГеодинамика и тектонофизика, 2016
The article provides an overview of boninitic magmatism occurrences in space and time and shows that the boninite rock series were generated through the entire geological history of the Earth.
A. A. Shchipansky
doaj   +1 more source

A Giant Impact Origin for the First Subduction on Earth

open access: yesGeophysical Research Letters
Hadean zircons provide a potential record of Earth's earliest subduction 4.3 billion years ago. It remains enigmatic how subduction could be initiated so soon after the presumably Moon‐forming giant impact (MGI).
Qian Yuan   +3 more
doaj   +1 more source

An analytical study of initial subduction of the plate based on a bibliometric analysis method spanning 1995–2024

open access: yesFrontiers in Earth Science
Subduction zones constitute a fundamental element of plate tectonic theory, with the initial subduction phase representing a critical but poorly constrained transitional stage in the development of mature subduction systems. Using CiteSpace and VOSviewer
Yongqiang Zhang, Nan Jiang, Kexin Liu
doaj   +1 more source

Home - About - Disclaimer - Privacy