Compositions of sandstones in circum-Pacific subduction complexes and fore-arc basins
Arc-trench systems of the circum-Pacific orogenic belt contain voluminous sandstones within fore-arc terranes that include complexly deformed fore-arc basins of several types. Turbidites incorporated within subduction complexes include not only axially transported trench fill, but also abyssal-plain sediments deposited on the sea floor beyond the trench, and slope-basin deposits perched on the accretionary trench slope. Mean framework modes of circum-Pacific sandstone suites can be expressed adequately by the use of QFL and QmFLt plots. Supplementary QmPK and QpLvLs plots depict partial modes of mineral grains alone and polycrystalline lithic fragments, respectively. Source rocks were mainly volcanic and plutonic terranes of the circum-Pacific magmatic arcs, although some recycled sedimentary and metasedimentary debris is also present.
- Research Organization:
- Univ. of Arizona, Tucson
- OSTI ID:
- 5361202
- Journal Information:
- Am. Assoc. Pet. Geol., Bull.; (United States), Journal Name: Am. Assoc. Pet. Geol., Bull.; (United States) Vol. 66:2; ISSN AAPGB
- Country of Publication:
- United States
- Language:
- English
Similar Records
Sedimentation in the central segment of the Aleutian Trench: Sources, transport, and depositional style
Geology and petroleum potential of the Indonesian fore-arc basins
Related Subjects
580100* -- Geology & Hydrology-- (-1989)
580300 -- Mineralogy
Petrology
& Rock Mechanics-- (-1989)
ALASKA
ASIA
AUSTRALASIA
CALIFORNIA
CONTINENTAL MARGIN
CONTINENTAL SHELF
CRETACEOUS PERIOD
FEDERAL REGION IX
FEDERAL REGION X
GEOLOGIC AGES
GEOLOGY
GEOMORPHOLOGY
IGNEOUS ROCKS
JAPAN
JURASSIC PERIOD
LITHOLOGY
MESOZOIC ERA
NEW ZEALAND
NORTH AMERICA
ORIGIN
OROGENESIS
PACIFIC OCEAN
PETROLOGY
PLUTONIC ROCKS
ROCKS
SANDSTONES
SEA BED
SEAS
SEDIMENTARY ROCKS
SURFACE WATERS
TECTONICS
TRIASSIC PERIOD
USA
VOLCANIC ROCKS