scholarly journals Control of the symmetry of plume-ridge interaction by spreading ridge geometry

2010 ◽  
Vol 11 (7) ◽  
pp. n/a-n/a ◽  
Author(s):  
O. Shorttle ◽  
J. Maclennan ◽  
S. M. Jones
Keyword(s):  
Spreading Ridge ◽  
Ridge Geometry

Extremely asymmetric magmatic accretion of oceanic crust at the ends of slow-spreading ridge segments

Geology ◽  
2000 ◽  
Vol 28 (2) ◽  
pp. 179-182 ◽  
Author(s):  
Simon Allerton ◽  
Javier Escartín ◽  
Roger C. Searle
Keyword(s):  
Oceanic Crust ◽  
Spreading Ridge ◽  
Slow Spreading

A SUBDUCTION ZONE-SPREADING RIDGE TRANSITION SIGNATURE PRESERVED IN RECENT VOLCANIC ACTIVITY IN THE NE LAU BASIN

2017 ◽  
Author(s):  
Valerie Finlayson ◽  
◽  
Jasper Konter ◽  
Kenneth H. Rubin ◽  
Nicole X. Nie ◽  
...  
Keyword(s):  
Subduction Zone ◽  
Volcanic Activity ◽  
Recent Volcanic Activity ◽  
Spreading Ridge ◽  
Lau Basin

Enriching mantle melts within a dying mid-ocean spreading ridge: Insights from Hf-isotope and trace element patterns in detrital oceanic zircon

Lithos ◽  
2011 ◽  
Vol 126 (3-4) ◽  
pp. 355-368 ◽  
Author(s):  
Ryan A. Portner ◽  
Nathan R. Daczko ◽  
Melissa J. Murphy ◽  
Norman J. Pearson
Keyword(s):  
Trace Element ◽  
Hf Isotope ◽  
Spreading Ridge

Influence of ridge geometry on lateral mode stability of (In/Al)GaN laser diodes

2005 ◽  
Vol 202 (2) ◽  
pp. 173-173 ◽  
Author(s):  
Ulrich T. Schwarz ◽  
Markus Pindl ◽  
Evi Sturm ◽  
Michael Furitsch ◽  
Andreas Leber ◽  
...  
Keyword(s):  
Laser Diodes ◽  
Mode Stability ◽  
Lateral Mode ◽  
Ridge Geometry

scholarly journals GEODYNAMICS AND MAGMATISM OF THE PACIFIC-TYPE TRANSFORM MARGINS. ASPECTS AND DISCRIMINANT DIAGRAMS

2021 ◽  
pp. 3-24
Author(s):  
A.V. Grebennikov ◽  
◽  
A.I. Khanchuk ◽  
Keyword(s):  
Continental Margin ◽  
Tectonic Setting ◽  
Island Arc ◽  
Igneous Rocks ◽  
High Alumina ◽  
Plate Boundaries ◽  
Spreading Ridge ◽  
Convergent Margins ◽  
Oceanic Plate ◽  
Plate Movement

Transform margins represent lithospheric plate boundaries with horizontal sliding of oceanic plate, which in time and space replaced the subduction related convergent margins. This happened due to: spreading ridge–trench intersection (California; Queen Charlotte–Northern Cordilleran, West of the Antarctic Peninsula, and probably the Late Miocene–Pleistocene Southernmost South America) or ridge death along continental margin (Baja California); change in the direction of oceanic plate movement (Western Aleutian–Komandorsk; Southernmost tip of the Andes); and island arc-continent collision (New Guinea Island). Post-subduction magmatism is related to a slab window that resulted either from the spreading ridge collision (subduction) with a continental margin or slab tear formation, or slab break-off after subduction cessation due to other reasons. Igneous magmatic series formed in consequence of these events show diversity of tholeiitic (sub-alkaline), alkaline or calc-alkaline, high-alumina and adakitic rocks. The comprehensive geochemical dataset (more than 2400 analyses) on igneous rocks of the model transform and convergent geodynamic settings allowed to substantiate the most informative triple diagrams for the petrogenic oxides TiO2 × 10 – Fe2O3Tot – MgO and trace elements Nb – La– Yb. Mostly approved for the rock compositions with SiO2 < 63 wt. %, the new plots are capable of distinguishing igneous rocks formed above zones of subduction at an island arc and continental margin (related to convergent margins), from those formed in the tectonic setting of transform margins along continents or island arcs.

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