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Physical properties of Hole 70-506D
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Physical properties of Hole 70-506C
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Physical properties of Hole 70-506B
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Physical properties of Hole 70-506
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Physical properties of Hole 70-504B
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Geochemistry at DSDP Holes 68-501 and 70-504B
To present one example of the variations among different laboratories in a different way, the FeO and MgO values obtained on the three standard samples are plotted in Figure 1... -
Geochemistry and minerals at DSDP Legs 68-70 Holes
The compositions of natural glasses and phenocrysts in basalts from Deep Sea Drilling Project Sites 501, 504, and 505, near the Costa Rica Rift, constitute evidence for the... -
Major, trace and rare earth elements and minerals at DSDP Legs 69-70 Holes
We obtained major and trace element data on 113 samples from basalts drilled during DSDP Legs 69 and 70 in the Costa Rica Rift area. The majority have major and trace element... -
Major- and trace-element chemistry of DSDP Leg 70 Holes basalts and their alt...
Major and trace element compositions of basalts from the lower part of Hole 504B indicate their cogenetic nature. The cored sequence of interlayered pillow lavas and massive... -
Major- and trace-elements at DSDP Legs 68-70 Holes
The basalts recovered from the Costa Rica Rift by drilling at Deep Sea Drilling Project Sites 501, 504, and 505 during Legs 68, 69 and 70 of the Glomar Challenger are the most... -
Geochemistry at DSDP Sites 69-505, 69-504 and 70-504
Deep basement penetration during Legs 69 and 70 at Hole 504B in the Panama Basin allowed the recovery of a 561.5-meter sequence of basaltic pillows, thin flows, and breccias... -
Chemiscal composition of basalts from DSDP Legs 69 and 70 Holes
Chemical compositions and 1-atm. phase relations were determined for basalts drilled from Holes 501, 504A, 504B, 505, and 505B on Legs 68, 69, and 70 of the Deep Sea Drilling... -
Chemical composition and sulfur-isotope ratios in DSDP Legs 69-and 70
As part of the geochemical-petrological study of basalts recovered from DSDP Hole 504B (Leg 70) on the southern flank of the Costa Rica Rift, we investigated specially the... -
Physical properties and geochemistry at DSDP Leg 70 Holes
Ashes occurring both as distinct layers and mixed with pelagic sediments of the hydrothermal mounds lying south of the Galapagos Rift are mainly rhyolitic and basaltic. The... -
Geochemistry at DSDP Leg 70 Holes
A total of 32 holes at five sites near 1°N, 86°W drilled on Deep Sea Drilling Project (DSDP) Leg 70 (November- December 1979) provide unique data on the origin of the... -
Pore-water chemistry at DSDP Leg 70 Holes
Geological and geophysical data collected during Deep Sea Drilling Project (DSDP) Leg 70 indicate that hydrothermal solutions are upwelling through the sediments of the mounds... -
Concentration and isotope composition of sulphur in sediments and pore water ...
Data obtained while investigating the mounds area near the Galapagos Spreading Center demonstrate the direct influence of solutions derived from the interaction of seawater and... -
Lead and strontium isotopic composition of some metalliferous and pelagic sed...
In recent years, metalliferous sediments have been discovered overlying newly generated oceanic crust in the East Pacific, North Atlantic, Indian Ocean, Red Sea, Gulf of Aden,... -
Elemental and stable isotopic composition of some metalliferous and pelagic s...
Nontronite, the main metalliferous phase of the Galapagos mounds, occurs at subsurface depths of about 2 to 20 meters; Mn-oxide material is limited to the upper 2 meters of the... -
Radiochemistry at DSDP Leg 54 and 70 Holes
Use of the hydraulic piston corer during DSDP Leg 70 in the Galapagos mounds area allowed recovery of an undisturbed sedimentary sequence down to the basement. It thus became...
