High-temperature alteration of oceanic gabbros by seawater (Hess Deep, Ocean Drilling Program Leg 147): Evidence from oxygen isotopes and elemental fluxes

1996 ◽  
Vol 101 (B7) ◽  
pp. 15883-15897 ◽  
Author(s):  
Christophe Lecuyer ◽  
Bruno Reynard
Keyword(s):  
High Temperature ◽  
Oxygen Isotopes ◽  
Deep Ocean ◽  
Ocean Drilling Program ◽  
Ocean Drilling

scholarly journals Origin of the sheeted dike complex at superfast spread East Pacific Rise revealed by deep ocean crust drilling at Ocean Drilling Program Hole 1256D

2008 ◽  
Vol 9 (6) ◽  
pp. n/a-n/a ◽  
Author(s):  
Susumu Umino ◽  
Laura Crispini ◽  
Paola Tartarotti ◽  
Damon A. H. Teagle ◽  
Jeffery C. Alt ◽  
...  
Keyword(s):  
East Pacific Rise ◽  
Deep Ocean ◽  
Ocean Crust ◽  
Ocean Drilling Program ◽  
Ocean Drilling ◽  
East Pacific ◽  
Dike Complex ◽  
Sheeted Dike Complex

scholarly journals Regional and global signals in seawater δ18O records across the mid-Pleistocene transition

Geology ◽  
2019 ◽  
Vol 48 (2) ◽  
pp. 113-117 ◽  
Author(s):  
Heather L. Ford ◽  
Maureen E. Raymo
Keyword(s):  
Ocean Circulation ◽  
North Pacific Ocean ◽  
Deep Ocean ◽  
Ocean Drilling Program ◽  
Ocean Drilling ◽  
Ice Volume ◽  
The North ◽  
Global Ice Volume ◽  
Deep Ocean Water ◽  
Deep Ocean Circulation

Abstract High-resolution seawater δ18O records, derived from coupled Mg/Ca and benthic δ18O analyses, can be used to evaluate how global ice volume changed during the mid-Pleistocene transition (MPT, ca. 1250–600 ka). However, such seawater δ18O records are also influenced by regional hydrographic signals (i.e., salinity) and changes in deep-ocean circulation across the MPT, making it difficult to isolate the timing and magnitude of the global ice volume change. To explore regional and global patterns in seawater δ18O records, we reconstruct seawater δ18O from coupled Mg/Ca and δ18O analyses of Uvigerina spp. at Ocean Drilling Program Site 1208 in the North Pacific Ocean. Comparison of individual seawater δ18O records suggests that deep-ocean circulation reorganized and the formation properties (i.e., salinity) of deep-ocean water masses changed at ca. 900 ka, likely related to the transition to marine-based ice sheets in Antarctica. We also find that an increase in ice volume likely accompanied the shift in glacial-interglacial periodicity observed in benthic carbonate δ18O across the MPT, with increases in ice volume observed during Marine Isotope Stages 22 and 16.

Deep Ocean Drilling Program

Eos ◽  
1980 ◽  
Vol 61 (4) ◽  
pp. 33
Author(s):  
J. R. Heirtzler
Keyword(s):  
Deep Ocean ◽  
Ocean Drilling Program ◽  
Ocean Drilling
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