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ODP SCIENTIFIC RESULTS
LEG 147 - Hess Deep Rift Valley

Sample Reference:
Pedersen, R.B., Malpas, J., and Falloon, T., 1996. Petrology and geochemistry of gabbroic and related rocks from Site 894, Hess Deep. In Mével, C., Gillis, K.M., Allan, J.F., and Meyer, P.S. (Eds.), Proc. ODP, Sci. Results, 147: College Station, TX (Ocean Drilling Program), 3-19.

Table of Contents

SECTION 1. IGNEOUS PETROLOGY

Chapter 1: Petrology and geochemistry of gabbroic and related rocks from Site 894, Hess Deep, p. 3-19.
R.B. Pedersen, J. Malpas, and T. Falloon
See abstract.

Chapter 2: Melt migration through high-level gabbroic cumulates of the East Pacific Rise at Hess Deep: the origin of magma lenses and the deep crustal structure of fast-spreading ridges, p. 21-58.
J.H. Natland and H.J.B. Dick
See abstract.

Chapter 3: Rare earth element constraints on the origin of amphibole in gabbroic rocks from Site 894, Hess Deep, p. 59-75.
K.M. Gillis
See abstract.

Chapter 4: Platinum-group-element concentrations in mafic and ultramafic lithologies drilled from Hess Deep, p. 77-90.
H.M. Prichard, H. Puchelt, J.-D. Eckhardt, and P.C. Fisher
See abstract.

Chapter 5: Sulfide mineralogy, sulfur content, and sulfur isotope composition of mafic and ultramafic rocks from Leg 147, p. 91-101.
H. Puchelt, H.M. Prichard, Z. Berner, and J. Maynard
See abstract.

Chapter 6: Late-stage melt evolution and transport in the shallow mantle beneath the East Pacific Rise, p. 103-134.
H.J.B. Dick and J.H. Natland
See abstract.

Chapter 7: Petrology of gabbro-troctolite-peridotite complex from Hess Deep, equatorial Pacific: implications for mantle-melt interaction within the oceanic lithosphere, p. 135-155.
S. Arai and K. Matsukage
See abstract.

Chapter 8: Cr-rich spinel as a tracer for melt migration and melt-wall rock interaction in the mantle: Hess Deep, Leg 147, p. 157-172.
J.F. Allan and H.J.B. Dick
See abstract.

Chapter 9: Petrology of selected Leg 147 basaltic lavas and dikes, p. 173-186.
J.F. Allan, T. Falloon, R.B. Pedersen, B. Shankar Lakkapragada, J.H. Natland, and J. Malpas
See abstract.

SECTION 2. METAMORPHIC PETROLOGY

Chapter 10: Fracture-controlled metamorphism of Hess Deep gabbros, Site 894: constraints on the roots ofmid-ocean-ridge hydrothermal systems at fast-spreading centers, p. 189-212.
C.E. Manning and C.J. MacLeod
See abstract.

Chapter 11: Melt-fluid evolution in gabbroic rocks from Hess Deep, p. 213-226.
D.S. Kelley and J. Malpas
See abstract.

Chapter 12: Oxygen and strontium isotope compositions of Hess Deep gabbros (Holes 894F and 894G): high-temperature interaction of seawater with the oceanic crust layer 3, p. 227-234.
C. Lécuyer and G. Gruau
See abstract.

Chapter 13: Mineralogic and stable isotope record of polyphase alteration of upper crustal gabbros of the East Pacific Rise (Hess Deep, Site 894), p. 235-254.
G.L. Früh-Green, A. Plas, and L.N. Dell'Angelo
See abstract.

Chapter 14: Petrologic and stable isotope constraints on hydrothermal alteration and serpentinization of the EPR shallow mantle at Hess Deep (Site 895), p. 255-291.
G.L. Früh-Green, A. Plas, and C. Lécuyer
See abstract.

Chapter 15: Hydrothermal alteration of the upper-mantle section at Hess Deep, p. 293-309.
C. Mével and C. Stamoudi
See abstract.

Chapter 16: Sr and O isotopic ratios of aragonite veins from Site 895, p. 311-313.
J. Blusztajn and S.R. Hart
See abstract.

SECTION 3. STRUCTURAL GEOLOGY

Chapter 17: Gabbro fabrics from Site 894, Hess Deep: implications for magma chamber processes at the East Pacific Rise, p. 317-328.
C.J. MacLeod, F. Boudier, G. Yaouancq, and C. Richter
See abstract.

Chapter 18: Constraints on the geometry and fracturing of Hole 894G, Hess Deep, from Formation MicroScanner logging data, p. 329-345.
B. Célérier, C.J. MacLeod, and P.K. Harvey
See abstract.

Chapter 19: Structures in peridotites from Site 895, Hess Deep: implications for the geometry of mantle flow beneath the East Pacific Rise, p. 347-356.
F. Boudier, C.J. MacLeod, and L. Bolou
See abstract.

Chapter 20: Structural history and significance of gabbroic rocks in the uppermost mantle: Hess Deep, EPR (Site 895), p. 357-370.
L.A. Kennedy, A.K. Kronenberg, and H.J.B. Dick
See abstract.

SECTION 4. MAGNETISM

Chapter 21: Paleomagnetism and rock magnetic properties of gabbro from Hole 894G, Hess Deep, 373-381.
J.E. Pariso, P. Kelso, and C. Richter
See abstract.

Chapter 22: Paleomagnetism of gabbroic rocks and peridotites from Sites 894 and 895, Leg 147, Hess Deep: results of half-core and whole-core measurements, p. 383-391.
E. Kikawa, P.R. Kelso, J.E. Pariso, and C. Richter
See abstract.

Chapter 23: Magnetic fabrics and sources of magnetic susceptibility in lower crustal and upper mantle rocks from Hess Deep, p. 393-403.
C. Richter, P.R. Kelso, and C.J. MacLeod
See abstract.

Chapter 24: Rock magnetic properties, magnetic mineralogy, and paleomagnetism of peridotites from Site 895, Hess Deep, p. 405-413.
P.R. Kelso, C. Richter, and J.E. Pariso
See abstract.

SECTION 5. PHYSICAL PROPERTIES

Chapter 25: Velocity behavior of lower crustal and upper mantle rocks from a fast-spreading ridge at Hess Deep, p. 417-440.
G.J. Iturrino, D.J. Miller, and N.I. Christensen
See abstract.

SECTION 6. SEDIMENTS

Chapter 26: Sediments and their geochemistry, Hess Deep, p. 443-450.
J.-D. Eckhardt and H. Puchelt
See abstract.

Chapter 27: Detrital minerals in surface sediments from Hess Deep, equatorial Pacific: implications for the lithologic spread of mafic-ultramafic rocks, p. 451-457.
S. Arai and N. Abe
See abstract.

SECTION 7. SYNTHESES

Chapter 28: Tectonics of Hess Deep: a synthesis of drilling results from Leg 147, p. 461-475.
C.J. MacLeod, B. Célérier, G.L. Früh-Green, and C.E. Manning
See abstract.

Chapter 29: Geochemical and petrological constraints on velocity behavior of lower crustal and upper mantle rocks from the fast-spreading ridge at Hess Deep, p. 477-490.
D.J. Miller, G.J. Iturrino, and N.I. Christensen
See abstract.

SECTION 8. DATA REPORTS

Chapter 30: Data Report: Ultramafic reference material from Core 147-895D-10W, p. 493-496.
H. Puchelt, J. Malpas, T. Falloon, R. Pedersen, J.-D. Eckhardt, and J.F. Allan

Chapter 31: Data Report: Metamorphic veins from Site 894, p. 497-513.
C.E. Manning, C.J. MacLeod, G.L. Früh-Green, D.S. Kelley, and C. Lécuyer

Chapter 32: Data Report: Structural measurements from Sites 894 and 895, Hess Deep, p. 515-529.
C.J. MacLeod, C.E. Manning, F. Boudier, B. Célérier, L.A. Kennedy, P. Kelso, E. Kikawa, J.E. Pariso, and C. Richter

SECTION 9: INDEX

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Last Modified: 2 July 1997