Oxygen isotope evidence for recycled crust in the source of EM-type ocean island basalts

Nature ◽  
1993 ◽  
Vol 362 (6423) ◽  
pp. 809-813 ◽  
Author(s):  
Jon D. Woodhead ◽  
Peter Greenwood ◽  
Russell S. Harmon ◽  
Peter Stoffers
Keyword(s):  
Oxygen Isotope ◽  
Ocean Island ◽  
Ocean Island Basalts ◽  
Isotope Evidence

Triple oxygen isotope constraints on the origin of ocean island basalts

2020 ◽  
Author(s):  
Xiaobin Cao ◽  
Huiming Bao ◽  
Yongbo Peng
Keyword(s):  
Theoretical Calculation ◽  
Oxygen Isotope ◽  
Mantle Source ◽  
Plate Tectonics ◽  
Unique Feature ◽  
Published Data ◽  
Ocean Island ◽  
Ocean Island Basalts ◽  
Geochemical Proxies ◽  
Subducted Oceanic Crust

<p> </p><p><span>Understanding the origin of ocean island basalts (OIB) has important bearings on Earth’s deep mantle. Although it is widely accepted that subducted oceanic crust, as a consequence of plate tectonics, contributes material to OIB’s formation, its exact fraction in OIB’s mantle source remains ambiguous largely due to uncertainties associated with existing geochemical proxies. We have shown, through theoretical calculation and examining published data, that unlike many known proxies, triple oxygen isotope compositions (i.e. Δ<sup>17</sup>O) in olivine samples are not affected by crystallization and partial melting. This unique feature allows olivine Δ<sup>17</sup>O values to identify and quantify the fractions of subducted ocean sediments and hydrothermally altered oceanic crusts in OIB’s mantle source. In this work, new Δ<sup>17</sup>O measurements for OIB will be presented, and the implications will be discussed.<span>  </span></span></p><p> </p>

Triple oxygen isotope constraints on the origin of ocean island basalts

2019 ◽  
Vol 38 (3) ◽  
pp. 327-334 ◽  
Author(s):  
Xiaobin Cao ◽  
Huiming Bao ◽  
Caihong Gao ◽  
Yun Liu ◽  
Fang Huang ◽  
...  
Keyword(s):  
Oxygen Isotope ◽  
Ocean Island ◽  
Ocean Island Basalts

Oxygen isotope evidence for progressive uplift of the Cascade Range, Oregon

2002 ◽  
Vol 204 (1-2) ◽  
pp. 151-165 ◽  
Author(s):  
Matthew J. Kohn ◽  
Jennifer L. Miselis ◽  
Theodore J. Fremd
Keyword(s):  
Oxygen Isotope ◽  
Cascade Range ◽  
Isotope Evidence
Sign in / Sign up

Export Citation Format

Share Document