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"Daerah penelitian terletak pada Formasi Klapanunggal, di Kecamatan Klapanunggal, Kabupaten Bogor, Provinsi Jawa Barat dengan umur Miosen Tengah hingga Miosen Akhir. Tujuan dari penelitian ini adalah untuk mengidentifikasi kisaran umur litologi, karakteristik fasies, dan paleoekologi Formasi Klapanunggal. Metode yang digunakan dalam penelitian ini adalah pengumpulan data lapangan, pengukuran penampang stratigrafi, analisis petrografi, dan analisis mikropaleontologi. Berdasarkan analisis makroskopis melalui data lapangan dan analisis mikroskopis melalui analisis petrografi, didapatkan lima klasifikasi fasies pada daerah penelitian, yaitu Larger Foraminifera Floatstone, Larger Foraminifera Rudstone, Coral Bindstone, Skeletal Floatstone, dan Skeletal Rudstone. Berdasarkan distribusi dan kelimpahan foraminifera bentonik yang ada pada daerah penelitian yaitu Alveolinella quoyi, Amphistegina lessonii, Amphistegina radiata, Archaias angulatus, Asterorotalia yabei, Borelis melo, Elphidium craticulatum, Operculina ammonoides, Operculina complanata, Pyrgo depressa, Sphaerogypsina globulus, dan Triloculina oblonga, mencerminkan intensitas cahaya pada zona mesophotic sampai oligophotic menempel pada substrat berbutir kasar maupun halus dengan kedalaman air laut hingga 50 meter di bawah permukaan laut dan memiliki salinitas normal hingga hypersaline. Hidup pada zona tropis yang memiliki kandungan nutrisi yang rendah, sehingga foraminifera bersimbiosis dengan alga yang berperan sebagai sumber makanan bagi organisme.

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The research area is located in the Klapanunggal Formation, Klapanunggal District, Bogor Regency, West Java Province with an age of Middle Miocene to Late Miocene. The purpose of this study was to identify the age range of the lithology, facies characteristics, and paleoecological condition of the Klapanunggal Formation. The methods that used in this research were field data collection, stratigraphic cross-sectional measurement, petrographic analysis, and micropaleontological analysis. Based on macroscopic analysis trough field data and microscopic analysis through petrographical analysis, five facies classifications were obtained in the research area, namely Larger Foraminifera Floatstone, Larger Foraminifera Rudstone, Coral Bindstone, Skeletal Floatstone, and Skeletal Rudstone. Based on the distribution of benthic foraminifera in the area, namely Alveolinella quoyi, Amphistegina lessonii, Amphistegina radiata, Archaias angulatus, Asterorotalia yabei, Borelis melo, Elphidium craticulatum, Operculina ammonoides, Operculina complanata, Pyrgo depressa, Sphaerogypsina globulus, and Triloculina oblonga, reflecting light intensity in the mesophotic to oligophotic zone attached to coarse and fine grained substrates with sea water depths up to 50 meters under the sea level and having normal to hypersaline salinities. Living in tropical zone which have low nutrient content, so foraminifera are in symbiosis with algae which act as food sources for organisms."

"Penelitian terfokus pada Formasi Klapanunggal pada kala Miosen Tengah tersusun atas batugamping yang merupakan bagian dari Cekungan Jawa Barat dan Palung Bogor bagian Utara. Tujuan dari penelitian adalah menentukan karakteristik fasies, lingkungan pengendapan, dan sejarah diagenesis batugamping pada Formasi Klapanunggal, Jawa Barat. Metode penelitian yang dilakukan adalah pengumpulan data dan pengukuran penampang stratigrafi, analisis petrografi, X-ray Diffraction, dan Scanning Electron Microscope. Klasifikasi fasies yang didapatkan dari hasil deskripsi makroskopis dan analisis petrografi sebanyak enam (6) fasies, yaitu Skeletal Wackestone, Skeletal Packstone, Benthic Foram Grainstone, Skeletal Rudstone, Coral Rudstone, dan Bindstone. Kemudian, fasies-fasies tersebut diklasifikasikan menjadi asosiasi fasies berdasarkan makroskopis dan petrografi menghasilkan tiga (3) asosiasi fasies, yaitu Platform Interior (Open Marine), Platform Margin Reef, dan Slope. Selanjutnya, hasil analisis diagenesis dan paragenetik menghasilkan sejarah diagenesis batugamping pada Formasi Klapanunggal secara berurutan, yaitu tahapan eogenetik (marine phreatic dan meteoric phreatic), tahapan mesogenetik (burial), dan tahapan telogenetik (meteoric phreatic dan meteoric vadose). Kemudian, terdapat hubungan asosiasi fasies dengan diagenesis, yaitu fitur sementasi marine lebih intensif pada asosiasi fasies Platform Margin Reef dibandingkan dengan asosiasi fasies Slope dan Platform Interior (Open Marine). Selain itu, pengaruh kompaksi mekanik lebih kuat pada asosiasi fasies Platform Margin Reef dan Slope dibandingkan dengan asosiasi fasies Platform Interior (Open Marine).

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The research focused on the Klapanunggal Formation during the Middle Miocene which was composed of limestone which was part of the West Java Basin and the Northern part of the Bogor Trench. The purpose of this research is to determine facies characteristics, facies association, depositional environment and the history of limestone diagenesis in Klapanunggal Formation, West Java. Research method is data collection and measurement of stratigraphic sections, petrographic analysis, X-ray Diffraction, and Scanning Electron Microscope. The classification of facies obtained from the result of macroscopic description and petrographic analysis as many as six (6) facies, namely Skeletal Wackestone, Skeletal Packstone, Benthic Foram Grainstone, Skeletal Rudstone, Coral Rudstone, and Bindstone. Then, those facies classified into facies association based on macroscopic and petrographic analysis produces in three (3) facies association, namely Platform Interior – Open Marine, Platform Margin Reef, and Slope Furthermore, the results of diagenesis and paragenetic analysis produce a history of limestone diagenesis in the Klapanunggal Formation sequentially, namely the eogenetic stages (marine phreatic and meteoric phreatic), mesogenetic (burial) stages, and telogenetic stages (meteoric phreatic and meteoric vadose). Then, there is a relationship between facies associations with diagenesis, namely marine cementation features are more intensive in the Platform Margin Reef facies association than the Slope and Platform Interior (Open Marine) facies associations. In addition, the effect of mechanical compaction is stronger on the Platform Margin Reef and Slope facies association compared to the Platform Interior (Open Marine) facies association."