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_______________________________________________________________________________________________________ Forum Sedimentologist Indonesia (FOSI), the sedimentology commission of the Indonesian Geologist Association (IAGI) will conduct an Evening Talk with Subject Oligo-Miocene Carbonates of the East Java Basin : Regional Facies Definition and Recent Significant Discoveries, on Friday, May 21, 2004 from 17.00 - 18.00 in Tamnak Thai Restaurant, Jl. H.O.S. Cokroaminoto No. 78, Jakarta Pusat SPEAKER : Awang H. Satyana, BPMIGAS Abstract Prospectivity of the Oligo-Miocene carbonates of the East Java Basin have been proven since early 1970s. However, the significance of these carbonates as oil and gas producers have not obtained full attention until the late of 1990s when un-interrupted significant discoveries within these carbonates started to take place. Located at the active southeastern margin of the Sundaland, the East Java Basin has recorded an active geodynamic history. The basin developed from an oceanic basin in front of the Late Cretaceous subduction zone to presently a backarc basin behind the volcanic arc. The basin was segmented into a number of horsts and grabens accommodating the deposition of the Paleogene synrift and postrift sediments as well as the carbonate development. Sea transgression during the Oligo-Miocene resulted in the development of carbonates comprising the Kujung-Prupuh-Tuban-Rancak formations. Two modes of carbonate development can be recognized : (1) deposition on the land-attached platform, and (2) deposition on the offshore isolated platforms. These two sedimentary domains are bordered by the Oligo-Miocene shelf edge which presently occupies the northern coastal lines of the East Java and Madura Island. To the north of the shelf-edge, the deposition of carbonates was controlled by segmented basements of the land-attached platform. Three facies are recognized : fringing reef at rim of basement, basinal lime mud mound, and patchreef over platform. Along the shelf-edge area, high-energy shelf-edge barrier reef developed. To the south of the shelf-edge barrier, the carbonates of pinnacle reefs grew above the segmented isolated platforms. In the last five years, continuing significant oil and gas discoveries have been taking place within all carbonate facies. Deliberate definition of the carbonate facies, integrated with the knowledge of the basin's stratigraphy, structure, and geochemistry, has enhanced the exploration success in this area. Biography Awang Harun Satyana graduated from Geology Department of Padjadjaran University in Bandung in 1989. He worked for Pertamina Exploration from 1990 to 1997 as Exploration Geologist for Kalimantan and Eastern Indonesia areas. From 1997 to 2000, he worked for JOB Pertamina and Santa Fe as Sr. Exploration Geologist for Salawati, Papua area. From 2000 to 2002, he worked for Pertamina Management of Production Sharing as Sr. Regional Geologist for whole Indonesia areas. Since the end of 2002, he joined Badan Pelaksana Migas (Indonesia's Implementing Body for Upstream Oil and Gas Businesses) as Head of Geology for Java and South Sumatra Region. Awang is a member of IAGI, IPA, FOSI, AAPG, and EAGE and actively contributes papers for national and international conferences and journals. As much as 35 papers covering various subjects, 5 articles, 4 invited talks, and 1 book of course manual have been published. Some of his papers were given awards. In the last four years, he witnessed and was involved in the successes of companies exploring the Oligo-Miocene carbonates of East Java and tried to integrate the companies' data into regional geologic synthesis of these prolific reservoirs. COST : Rp 40,000.00, payable at the entrance of the venue. Please note that payment should be in cash. Reservations and cancellations will be accepted until 09.00 am on Friday, May 21, 2004. Please contact Deddy Sebayang, phone number: 30003200 ext. 2922 or email at [EMAIL PROTECTED] CONFIDENTIALITY AND DISCLAIMER NOTICE: This message and any attached files may contain information that is confidential and/or subject of legal privilege intended only for use by the intended recipient. If you are not the intended recipient, please notify the sender immediately and delete the message. In any case the Company dissacociates from any statement or opinion contained in the message sent by its network which are not closely related to its activities. --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] Visit IAGI Website: http://iagi.or.id IAGI-net Archive 1: http://www.mail-archive.com/iagi-net%40iagi.or.id/ IAGI-net Archive 2: http://groups.yahoo.com/group/iagi Komisi Sedimentologi (FOSI) : F. 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