Depositional and diagenetic history of limestones and dolostones of the Oligo‐Miocene Kujung Formation in the Northeast Java Basin, Indonesia
Abstract Lithological and geochemical features of platformal carbonates record the signatures of the global climates and the regional environmental settings and also reconstruct the diagenetic history and porosity evolution, which are essential to evaluate the potential of hydrocarbon reservoirs. Th...
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crwiley:10.1111/iar.12326 2024-09-09T19:05:39+00:00 Depositional and diagenetic history of limestones and dolostones of the Oligo‐Miocene Kujung Formation in the Northeast Java Basin, Indonesia Syah, Muhlash Hada Firman Kano, Akihiro Iizuka, Tsuyoshi Kakizaki, Yoshihiro Indonesia Endowment Fund for Education 2019 http://dx.doi.org/10.1111/iar.12326 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fiar.12326 https://onlinelibrary.wiley.com/doi/pdf/10.1111/iar.12326 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/iar.12326 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Island Arc volume 28, issue 6 ISSN 1038-4871 1440-1738 journal-article 2019 crwiley https://doi.org/10.1111/iar.12326 2024-07-30T04:23:20Z Abstract Lithological and geochemical features of platformal carbonates record the signatures of the global climates and the regional environmental settings and also reconstruct the diagenetic history and porosity evolution, which are essential to evaluate the potential of hydrocarbon reservoirs. This study investigates the platformal carbonates of the Oligo‐Miocene Krunji Formation of North East Java Basin, which are potentially significant hydrocarbon reservoirs. The carbonate sequence in a 283 m thick section at Kranji in East Java is subdivided into three lithological units: limestone unit 1, dolostone unit 2, and limestone unit 3, in ascending order. The strontium‐isotope ratios of well‐preserved calcite samples indicate the depositional period from Chattian (late Oligocene) to Burdigalian (early Miocene), which is consistent with ages of the foraminifer assemblages. Unit 1 consists of low‐porosity limestone, in which two horizons of subaerial exposure are recognized by the occurrence of red‐colored matrix and lower δ 13 C values. Unit 2 consists of dolomitic rock and exhibits coarse‐grained calcitic grains and cross‐stratified structure. Considering that this unit has been subject to dolomitization, the sediment of unit 2 was initially permeable and was likely deposited in a shoal setting. The overlying unit 3 of Aquitanian–Burdigalian age is characterized by a highly granular texture. High porosity and uniformly low δ 13 C and δ 18 O values indicate that Unit 3 was subjected to more intense meteoric diagenesis than the Chattian unit 1. This was likely a consequence of the Antarctic ice‐sheet expansion during the Oligocene/Miocene transition, which amplified sea level change. The unit 2 dolomite has high δ 13 C and δ 18 O values and a high 87 Sr/ 86 Sr ratio which resulted from the reflux of seawater into permeable the sediment body in middle‐late Miocene (Burdigalian Tortonian) following the deposition of unit 3. The porosity and permeability of the Kujung Formation were initially controlled by ... Article in Journal/Newspaper Antarc* Antarctic Ice Sheet Wiley Online Library Antarctic The Antarctic Island Arc 28 6 |
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English |
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Abstract Lithological and geochemical features of platformal carbonates record the signatures of the global climates and the regional environmental settings and also reconstruct the diagenetic history and porosity evolution, which are essential to evaluate the potential of hydrocarbon reservoirs. This study investigates the platformal carbonates of the Oligo‐Miocene Krunji Formation of North East Java Basin, which are potentially significant hydrocarbon reservoirs. The carbonate sequence in a 283 m thick section at Kranji in East Java is subdivided into three lithological units: limestone unit 1, dolostone unit 2, and limestone unit 3, in ascending order. The strontium‐isotope ratios of well‐preserved calcite samples indicate the depositional period from Chattian (late Oligocene) to Burdigalian (early Miocene), which is consistent with ages of the foraminifer assemblages. Unit 1 consists of low‐porosity limestone, in which two horizons of subaerial exposure are recognized by the occurrence of red‐colored matrix and lower δ 13 C values. Unit 2 consists of dolomitic rock and exhibits coarse‐grained calcitic grains and cross‐stratified structure. Considering that this unit has been subject to dolomitization, the sediment of unit 2 was initially permeable and was likely deposited in a shoal setting. The overlying unit 3 of Aquitanian–Burdigalian age is characterized by a highly granular texture. High porosity and uniformly low δ 13 C and δ 18 O values indicate that Unit 3 was subjected to more intense meteoric diagenesis than the Chattian unit 1. This was likely a consequence of the Antarctic ice‐sheet expansion during the Oligocene/Miocene transition, which amplified sea level change. The unit 2 dolomite has high δ 13 C and δ 18 O values and a high 87 Sr/ 86 Sr ratio which resulted from the reflux of seawater into permeable the sediment body in middle‐late Miocene (Burdigalian Tortonian) following the deposition of unit 3. The porosity and permeability of the Kujung Formation were initially controlled by ... |
author2 |
Indonesia Endowment Fund for Education |
format |
Article in Journal/Newspaper |
author |
Syah, Muhlash Hada Firman Kano, Akihiro Iizuka, Tsuyoshi Kakizaki, Yoshihiro |
spellingShingle |
Syah, Muhlash Hada Firman Kano, Akihiro Iizuka, Tsuyoshi Kakizaki, Yoshihiro Depositional and diagenetic history of limestones and dolostones of the Oligo‐Miocene Kujung Formation in the Northeast Java Basin, Indonesia |
author_facet |
Syah, Muhlash Hada Firman Kano, Akihiro Iizuka, Tsuyoshi Kakizaki, Yoshihiro |
author_sort |
Syah, Muhlash Hada Firman |
title |
Depositional and diagenetic history of limestones and dolostones of the Oligo‐Miocene Kujung Formation in the Northeast Java Basin, Indonesia |
title_short |
Depositional and diagenetic history of limestones and dolostones of the Oligo‐Miocene Kujung Formation in the Northeast Java Basin, Indonesia |
title_full |
Depositional and diagenetic history of limestones and dolostones of the Oligo‐Miocene Kujung Formation in the Northeast Java Basin, Indonesia |
title_fullStr |
Depositional and diagenetic history of limestones and dolostones of the Oligo‐Miocene Kujung Formation in the Northeast Java Basin, Indonesia |
title_full_unstemmed |
Depositional and diagenetic history of limestones and dolostones of the Oligo‐Miocene Kujung Formation in the Northeast Java Basin, Indonesia |
title_sort |
depositional and diagenetic history of limestones and dolostones of the oligo‐miocene kujung formation in the northeast java basin, indonesia |
publisher |
Wiley |
publishDate |
2019 |
url |
http://dx.doi.org/10.1111/iar.12326 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fiar.12326 https://onlinelibrary.wiley.com/doi/pdf/10.1111/iar.12326 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/iar.12326 |
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Antarctic The Antarctic |
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Antarctic The Antarctic |
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Antarc* Antarctic Ice Sheet |
genre_facet |
Antarc* Antarctic Ice Sheet |
op_source |
Island Arc volume 28, issue 6 ISSN 1038-4871 1440-1738 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/iar.12326 |
container_title |
Island Arc |
container_volume |
28 |
container_issue |
6 |
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1809819650348810240 |