Sequence stratigraphy and high-frequency cycles: New aspects for a quantitative evaluation of the Gulf of Suez basin, Egypt
- International Geoservices, Leiderdorp (Netherlands)
- Earth Resource Exploration, Cairo (Egypt)
A new development in the application of sequence stratigraphic concepts in marine as well as continental basins is the recognition of high-frequency cyclic patterns in rock successions in the subsurface. Studies of six wells from the northern, central, and southern parts of the Gulf of Suez show the presence of well-preserved, high-frequency cycles with periodicities similar to the orbitally forced Malankovitch parameters. Subsurface rock successions, third-order sequences, and high-frequency cycles were compared with outcrops. After establishing the biostratigraphic framework for the above-mentioned wells, a sequence analysis was performed. Sequence boundaries and maximum flooding positions in each well were calibrated with the occurrences and evaluation of the high-frequency cycles. It became obvious that there is an intimate relationship between these high-frequency Milankovitch cycles and sequence organization. In addition, a close relationship can be observed in the subsurface as well as in outcrops between high-frequency climatic changes (connected to the Milankovitch cycles) and (litho)facies variability. Quantitative evaluations of each sequence and/or systems tract can be computed with the International Geoservices' cyclicity analysis tool (MILABAR). The results are summarized in a well composite chart, rate (NAR), and ratio of preserved time. In correlations between the wells, an accuracy of 500-100 Ka can be obtained. The quantitative evaluation of the sequence and high-frequency cycle analysis gave some new aspects concerning the (litho)facies and geodynamic development during the pre- as well as the synrift stages of the Gulf of Suez Basin.
- OSTI ID:
- 6964364
- Report Number(s):
- CONF-9310237-; CODEN: AABUD2
- Journal Information:
- AAPG Bulletin (American Association of Petroleum Geologists); (United States), Vol. 77:9; Conference: American Association of Petroleum Geologists (AAPG) mid-continent section meeting, Amarillo, TX (United States), 10-12 Oct 1993; ISSN 0149-1423
- Country of Publication:
- United States
- Language:
- English
Similar Records
Penetrating evaporites - new information from old seismic data in Suez Rift, Egypt
Foraminiferal biostratigraphy, graphic correlation, and depositional history of the early Miocene, Gemsa Plain, Gulf of Suez, Egypt
Related Subjects
03 NATURAL GAS
STRATIGRAPHY
DATA ANALYSIS
SUBSURFACE STRUCTURES
EVALUATION
BOUNDARY LAYERS
CLIMATIC CHANGE
CORRELATIONS
EGYPTIAN ARAB REPUBLIC
GEOLOGY
GULF OF SUEZ
M CODES
SEDIMENTARY BASINS
AFRICA
ARAB COUNTRIES
COMPUTER CODES
DEVELOPING COUNTRIES
GEOLOGIC STRUCTURES
LAYERS
MIDDLE EAST
RED SEA
SEAS
SURFACE WATERS
020200* - Petroleum- Reserves
Geology
& Exploration
030200 - Natural Gas- Reserves
Geology
& Exploration