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Table of Contents - Special Paper 480

Mélanges: Processes of Formation and Societal Significance

Edited by John Wakabayashi and Yildirim Dilek


Introduction: Characteristics and tectonic settings of mélanges, and their significance for societal and engineering problems
John Wakabayashi and Yildirim Dilek
v

Part I. Mélange Generation in Oceanic Fracture Zones in Abyssal Settings
1. Serpentinite matrix mélange: Implications of mixed provenance for mélange formation
John W. Shervais, Sung Hi Choi, Warren D. Sharp, Jeffrey Ross, Marchell Zoglman-Schuman, and Samuel B. Mukasa
1
2. Geochemical mapping of the Kings-Kaweah ophiolite belt, California—Evidence for progressive mélange formation in a large offset transform-subduction initiation environment
J. Saleeby
31

Part II. Mélange Formation Associated with Subduction Initiation
3. Constraints on the evolution of the Mesohellenic Ophiolite from subophiolitic metamorphic rocks
R. Myhill
75
4. Role of plutonic and metamorphic block exhumation in a forearc ophiolite mélange belt: An example from the Mineoka belt, Japan
Ryota Mori, Yujiro Ogawa, Naoto Hirano, Toshiaki Tsunogae, Masanori Kurosawa, and Tae Chiba
95

Part III. Mélange Development in Subduction-Accretion Complexes and in Collisional Settings
5. Mélanges of the Franciscan Complex, California: Diverse structural settings, evidence for sedimentary mixing, and their connection to subduction processes
John Wakabayashi
117
6. Tectonic evolution of the Ankara Mélange and associated Eldivan ophiolite near Hanšili, central Turkey
Anne Dangerfield, Ron Harris, Ender Sarifakioglu, and Yildirim Dilek
143
7. Petrology of a Franciscan olistostrome with a massive sandstone matrix: The King Ridge Road mélange at Cazadero, California
Rolfe Erickson
171
8. Sedimentary block-in-matrix fabric affected by tectonic shear, Miocene Nabae complex, Japan
Soichi Osozawa, Terry Pavlis, and Martin F.J. Flower
189
9. Numerical estimation of duplex thickening in a deep-level accretionary prism: A proposal for network duplex
Hikaru Ueno, Ken-ichiro Hisada, and Yujiro Ogawa
207
10. Tectonic, sedimentary, and diapiric formation of the Messinian mélange: Tertiary Piedmont Basin (northwestern Italy)
Andrea Festa
215
11. Recognition of a trench-fill type accretionary prism: Thrust-anticlines, duplexes, and chaotic deposits of the Pliocene-Pleistocene Chikura Group, Boso Peninsula, Japan
Satoru Muraoka and Yujiro Ogawa
233
12. Implication of dark bands in Miocene–Pliocene accretionary prism, Boso Peninsula, central Japan
Yoko Michiguchi and Yujiro Ogawa
247

Part IV. Significance of Mélanges for Engineering and Applied Geology
13. Geopractitioner approaches to working with antisocial mélanges
Edmund W. Medley and Dimitrios Zekkos
261