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All Journal Widyariset Widyariset LEMBARAN PUBLIKASI MINYAK DAN GAS BUMI (LPMGB)
Christina Ani Setyaningsih
PPPTMGB "LEMIGAS"
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STUDI PALINOLOGI FORMASI MENTAWIR, SUB CEKUNGAN KUTAI BAWAH, KALIMANTAN TIMUR Christina Ani Setyaningsih
Widyariset Vol 12, No 1 (2009): Widyariset
Publisher : Pusbindiklat - LIPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (532.126 KB) | DOI: 10.14203/widyariset.12.1.2009.109-116

Abstract

Palynological study of the Mentawir Formation, Lower Kutai Basin, East Kalimantan has been conducted on the 27 selected cutting samples of the 'X' Well in the depth of interval 100'-4.140 'which is situated in 'DNA' Field The purpose of this study is to determine the age and depositional environment and biostratigraphic sequence of the sediment. The age of the sediment is primarily marked by the last appearance of Florschuetzia trilobata at 850', range from Middle Miocene to Late Miocene. The Middle Miocene age occupies sediments from interval 850'-4.140 , whilst the Late Miocene  age covers sediments from interval 100'-850'. Delta environment of the interval samples were deposited in lower delta plain (distal) to the delta front (distal). Based on the changes on the amount of the taxa group in the mangrove and freshwater ecology as well as the changes in the sedimentation, thus the biostratigraphic sequence of the 2 X2 Well with depth of interval 100'- 4.140' in 2 DNA2 field lies in the Transgressive System Tract to the Highstand System Tract.  
STUDI PALINOLOGI FORMASI MENTAWIR, SUB CEKUNGAN KUTAI BAWAH, KALIMANTAN TIMUR Christina Ani Setyaningsih
Widyariset Vol 12, No 1 (2009): Widyariset
Publisher : Pusbindiklat - LIPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (532.126 KB) | DOI: 10.14203/widyariset.12.1.2009.109-116

Abstract

Palynological study of the Mentawir Formation, Lower Kutai Basin, East Kalimantan has been conducted on the 27 selected cutting samples of the 'X' Well in the depth of interval 100'-4.140 'which is situated in 'DNA' Field The purpose of this study is to determine the age and depositional environment and biostratigraphic sequence of the sediment. The age of the sediment is primarily marked by the last appearance of Florschuetzia trilobata at 850', range from Middle Miocene to Late Miocene. The Middle Miocene age occupies sediments from interval 850'-4.140 , whilst the Late Miocene  age covers sediments from interval 100'-850'. Delta environment of the interval samples were deposited in lower delta plain (distal) to the delta front (distal). Based on the changes on the amount of the taxa group in the mangrove and freshwater ecology as well as the changes in the sedimentation, thus the biostratigraphic sequence of the 2 X2 Well with depth of interval 100'- 4.140' in 2 DNA2 field lies in the Transgressive System Tract to the Highstand System Tract.  
Pollen Pra-Tersier Daerah Kepala Burung, Papua Christina Ani Setyaningsih
Lembaran publikasi minyak dan gas bumi Vol 48 No 1 (2014)
Publisher : BBPMGB LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/LPMGB.48.1.226

Abstract

Penelitian ini bertujuan untuk merekam semua pollen pra-Tersier untuk meningkatkan pemahaman tentang stratigrasedimen pra-Tersier yang ada di daerah Kepala Burung, Papua. Pollen pra-tersier di daerah ini diyakini memiliki kekerabatan dengan pollen-pollen berumur pra-Tersier yang umum dijumpai di cekungan-cekungan berumur Mesozoikum di Australia dan Papua New Guinea. Berdasarkan kehadiran spora indeks yang tersingkap sepanjang jalur Sungai Ainim menunjukkan bahwa zonasi palinologi daerah penelitian terdapat pada zona Tricolporites apoxyexinus (Kapur Akhir) dan zona Protohaploxypinus microcorpus (Perm Akhir) yang menempati kisaran umur dari Eosen tengah (G-1), Kapur Akhir (G-4 sampai G-7) hingga Perm Akhir (T-1A sampai T-3D). Permo-Trias sedimen terendapkan pada lingkungan darat (non marine) pada umur sedangkan pada umur Kapur Akhir, sedimentasi umumnya berlangsung di lingkungan transisi/littoral-neritik pinggir. This study is aimed to record all pre-Tertiary pollen to improve the understanding of stratigraphy of the pre-Tertiary sediment that exists in the area of the Bird's Head, Papua. Pre-Tertiary palinomorf in this area is believed to have afnity with pre-Tertiary palinomorf which are common in the Mesozoic age in Australia and Papua New Guinea. Based on the index spores which are found along the Ainim river, it is interpreted that the studied sediment belongs to Tricolporites apoxyexinus zone (Late Cretaceous) and Protohaploxypinus microcorpus zone (Late Perm) which are ranging from middle Eocene (G-1), Late Cretaceous (G 4 to G-7) to Late-Perm (T-1A toT-3D). The Sediment was deposited in the terrestrial environment (non-marine) during Permo-Triassic age, which then shifted to the transitional environment (littoral-inner neritic) during Late Cretaceous.
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