Results 51 to 60 of about 45,915 (265)

Response of the mantle to flat slab evolution: Insights from local splitting beneath Peru [PDF]

, 2014
The dynamics of flat subduction, particularly the interaction between a flat slab and the overriding plate, are poorly understood. Here we study the (seismically) anisotropic properties and deformational regime of the mantle directly above the Peruvian ...
Barazangi, Bird, Bowman, Cahill, Caroline M. Eakin, Christensen, Coney, Couch, Crampin, Cristóbal Condori, Dickinson, Eakin, Espurt, Evans, Faccenda, Feng, Gripp, Hampel, Hampel, Hayes, Healy, Henry, Hernando Tavera, Hilairet, Humphreys, James, Jung, Jung, Jung, Karato, Katayama, Kneller, Kneller, Lara S. Wagner, Lloyd, Long, Long, Ma, MacDougall, Maureen D. Long, Nakajima, PeruSE, Phillips, Porter, Ramos, Rosenbaum, Silver, Silver, Susan L. Beck, Wagner, Wagner, Woods, Wüstefeld   +52 more
core   +2 more sources

MODELING OF MOVING DEFORMABLE CONTINENTS BY ACTIVE TRACERS: CLOSING AND OPENING OF OCEANS, RECIRCULATION OF OCEANIC CRUST

Геодинамика и тектонофизика, 2018
The evolution of the ‘mantle – moving deformable continents’ system has been studied by numerical experiments. The continents move self-consistently with the mantle flows of thermo-compositional convection.
A. M. Bobrov, A. A. Baranov
doaj   +1 more source

Continental subductions and Tibetan plateau growth

Journal of Nepal Geological Society, 2013
How and when the Tibetan plateau developed has long been a puzzling question with implications for the current understanding of the behaviour of the continental lithosphere in convergent zones. We present and discuss recent data acquired in geology and geophysics and through igneous and metamorphic petrology and palaeo-altitude estimates. This research
Anne Replumaz, Stephane Guillot
openaire   +2 more sources

The late Mesozoic-Cenozoic tectonic evolution of the South China Sea: A petrologic perspective [PDF]

, 2014
This paper presents a review of available petrological, geochonological and geochemical data for late Mesozoic to Recent igneous rocks in the South China Sea (SCS) and adjacent regions and a discussion of their petrogeneses and tectonic implications. The
Castillo, PR, Shi, X, Yan, Q
core   +2 more sources

Neoarchean Arc Magmatism and Crust Recycling in the Northern Marginal Zone of the Limpopo Complex, Zimbabwe: New Insights From Zircon U‐Pb‐Hf Isotopes of a Charnockite Suite

Geological Journal, EarlyView.
Charnockites with 2691–2607 Ma magmatic ages from the NMZ show arc‐magmatic geochemical signatures. They correspond to the lower‐crustal equivalent of the Chilimanzi Suite Granite in the Zimbabwe Craton. Lu‐Hf isotopic data of magmatic zircons show negative εHf(t) values (−11.18 to −2.20) with TDMC ages of 3699–3158 Ma, suggesting their protolith ...
Toshiaki Tsunogae, Md. Sazzadur Rahman, Gao Pin, M. Santosh, Wataru Fujisaki, Sam Uthup, Prince Mandingaisa   +6 more
wiley   +1 more source

Microcontinents and Continental Fragments Associated With Subduction Systems [PDF]

Tectonics, 2020
AbstractMicrocontinents and continental fragments are small pieces of continental crust that are surrounded by oceanic lithosphere. Although classically associated with passive margin formation, here we present several preserved microcontinents and continental fragments associated with subduction systems.
J. M. van den Broek, C. Gaina
openaire   +2 more sources

Mesozoic–Cenozoic Thermochronology of the Tarim–Southern Tianshan System, NW China

Geological Journal, EarlyView.
Tectonothermal history of the Tarim–Southern Tianshan system compared with the major tectonic events at far‐field plate margins. ABSTRACT The Tarim Basin, an oil‐bearing basin in northwest China, is tectonically and sedimentologically linked to the Southern Tianshan Orogenic Belt.
Shuangfeng Zhao, Wen Chen, Jingbo Sun, Ze Shen, Jie Zhang   +4 more
wiley   +1 more source

Neogene plate tectonic reconstructions and geodynamics of North Island sedimentary basins: Implications for the petroleum systems [PDF]

, 2006
Although the modern Australia-Pacific plate boundary through New Zealand is relatively straight, there have been significant changes in its geometry during the Neogene. Within the North Island sector there has been a fundamental transition from an Alpine
Furlong, Kevin P., Kamp, Peter J.J.
core   +1 more source

Replacement of Ores Recorded by Textures and Chemical Compositions of Sphalerite: An Example From the Furutobe Kuroko Deposit, Akita, Japan

Geological Journal, EarlyView.
Coupled dissolution‐reprecipitation of early formed Cd‐, Fe‐, Ag‐ and Sb‐poor sphalerite through interaction with high‐temperature and high‐sulphur fugacity Cu‐rich fluids, responsible for the formation of the yellow ores, resulted in the formation of Cd‐, Fe‐, Ag‐ and Sb‐rich, heavily chalcopyrite‐diseased sphalerite and enrichment of critical metals ...
Manuel Nopeia, Ryohei Takahashi, Andrea Agangi, Pearlyn Manalo, Hinako Sato   +4 more
wiley   +1 more source

A secular increase in continental crust nitrogen during the Precambrian [PDF]

, 2017
Recent work indicates the presence of substantial geologic nitrogen reservoirs in the mantle and continental crust. Importantly, this geologic nitrogen has exchanged between the atmosphere and the solid Earth over time. Changes in atmospheric nitrogen (i.
Goldblatt, Colin, Johnson, Benjamin W
core   +3 more sources