Petroleum geologic characteristics of east China Sea basin
- Research Institute of Petroleum Exploration and Development, Beijing (China)
The East China Sea is a major Cenozoic epicontinental rift-depression basin covering an area of 770,000 km{sup 2}. The basin is bounded by the Minzhe, uplift to the west and by the Ryukyu Island arc to the east. The thickness of sedimentary strata is greater than 10 km. Basin evolution has been dominated by taphrogenesis and orogenesis attributable to the westward subduction of the Pacific plate. The basin history of the East China Sea can be divided into four stages: (1) Late Cretaceous-Paleogene rifting stage, (2) Eocene-Oligocene rifting-depression stage, (3) Miocene depression stage, and (4) Pliocene-Quaternary draping stage. The Okinawa Trough is a new rifting zone related to the subduction of Ryukyu Island arc. Recent geophysical exploration and petroleum drilling activities in the East China Sea basin show that Paleogene lacustrine and Neogene marine facies strata include multiple suites of hydrocarbon source rocks. Eight structures have tested gas and oil. The Pinghu gas and oil field was discovered and delineated on the west slope of Xihu depression. Various types of traps, dome anticlines, rollover anticlines, fault blocks, buried hills, and reef carbonates, are good prospects.
- OSTI ID:
- 7091850
- Report Number(s):
- CONF-900605-; CODEN: AABUD
- Journal Information:
- AAPG Bulletin (American Association of Petroleum Geologists); (USA), Vol. 74:5; Conference: Annual convention and exposition of the American Association of Petroleum Geologists, San Francisco, CA (USA), 3-6 Jun 1990; ISSN 0149-1423
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
58 GEOSCIENCES
CHINA SEA
PETROLEUM GEOLOGY
ANTICLINES
CHINA
CRETACEOUS PERIOD
GEOLOGIC FAULTS
GEOLOGIC HISTORY
NATURAL GAS DEPOSITS
PETROLEUM DEPOSITS
RIFT ZONES
SEDIMENTARY BASINS
TERTIARY PERIOD
ASIA
CENOZOIC ERA
GEOLOGIC AGES
GEOLOGIC DEPOSITS
GEOLOGIC FRACTURES
GEOLOGIC STRUCTURES
GEOLOGY
MESOZOIC ERA
MINERAL RESOURCES
PACIFIC OCEAN
RESOURCES
SEAS
SURFACE WATERS
020200* - Petroleum- Reserves
Geology
& Exploration
580000 - Geosciences