--> Abstract: Biostratigraphy and Palaeoenvironments of the Early to Middle Miocene Lower Fars Formation, North Kuwait, by Abdulkader Youssef and Hanan Al-Owihan; #90105 (2010)

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AAPG GEO 2010 Middle East
Geoscience Conference & Exhibition
Innovative Geoscience Solutions – Meeting Hydrocarbon Demand in Changing Times
March 7-10, 2010 – Manama, Bahrain

Biostratigraphy and Palaeoenvironments of the Early to Middle Miocene Lower Fars Formation, North Kuwait

Abdulkader Youssef1; Hanan Al-Owihan1

(1) E & PD, Kuwait Oil Company, Ahmadi, Kuwait.

Full biostratigraphical and palaeoenvironmental analyses have been applied to 220 core samples taken from 14 cored intervals in Lower Fars Formation, north Kuwait area. The averaged 200 feet thick Lower Fars Formation is mainly composed of channel deposits intervened with shallow marine to lagoonal deposits, unconformably underlain and overlain by the Ghar and Dibdibba formations respectively.
The analyses of the foraminifera, ostracoda, palynology and nannopaleontology have identified four regional marine flooding events in the studied sections. These four marine flooding events have been found to coincide with those maximum flooding surfaces of the short term eustatic curve identified by Haq et al., 2005. Four depositional sequences have been defined based on those flooding events and bounded by erosional unconformities.
Age dating of these flooding events is tentative due to the absence of planktic foraminifera and nannofossils. The Langhian palynological species are existing along with the long range Early to Middle Miocene species in the studied intervals. Most of analyzed samples are barren of nannofossils, except for a single sample, indicating a barrier separating these marine influenced enclosed environments from the open marine on the eastern direction of the study area.
The palaeoenvironmental analysis has revealed that diverse of palaeoenvironments have been established during the deposition of Lower Fars Formation; fluvial channels intervening the shallow marginal marine; coastal marine to estuarine environments, with lagoonal environment formed in the interdistributary areas.