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All Journal Prosiding Seminar Nasional Rekayasa Teknologi Industri dan Informasi ReTII
Thabita Monica Tupang, Kannaya
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Studi Foraminifera untuk Penentuan Umur dan Lingkungan Pengendapan pada Formasi Sentolo, Desa Geden, Kecamatan Lendah, Kabupaten Kulon Progo, Yogyakarta Rizqi, Al Hussein Flowers; Thabita Monica Tupang, Kannaya
Retii 2024: Prosiding Seminar Nasional ReTII ke-19 (Edisi Penelitian)
Publisher : Institut Teknologi Nasional Yogyakarta

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Abstract

Stratigraphic measurements measured in the upper part of the Sentolo Formation are very limited, where this formation is mixed with clastic rocks whose distribution is only local and not continuous due to erosion, but in Geden Village, Lendah District, Kulon Progo Regency, Yogyakarta Special Region, an outcrop of the Sentolo formation was found the upper part with a total stratigraphic measurement measuring 5.2 meters. The purpose of this research is to compile the results of the study by obtaining rock samples on measured stratigraphic measurement lines in clastic limestone, with the aim of obtaining data on plangtonic and also bentonic small foraminifera. Based on the results of observations and descriptions, the plangtonic foraminifera found in limestone such as Globorotalia Acostaensis, Globigerinoides ruber, & Globorotalia Margaritae were found to be N16- N17 (Late Miocene), while the benthonic foraminifera found, such as Nodosaria Vetrebralis, Cibicides Polyrraphes, Amphistegina Lessonii, had an environment deposition of Deep Neritic 0-20m – Middle Neritic 20-100m.
PENENTUAN FASIES DAN ARUS PURBA BERDASARKAN KETERDAPATAN STRUKTUR SEDIMEN DAN LITOLOGI PADA KECAMATAN NGLIPAR, KABUPATEN GUNUNG KIDUL, YOGYAKARTA rizqi, al hussein flowers; Thabita Monica Tupang, Kannaya; Qoyyibi, Dava Saliham; Gil Lodar, Jaden
Retii 2025: Prosiding Seminar Nasional ReTII ke-20 (Edisi Penelitian)
Publisher : Institut Teknologi Nasional Yogyakarta

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Kajian mengenai arah arus purba pada Formasi Oyo cukup terbatas, struktur sedimen dalam penentuan arah arus purba dapat ditemukan pada daerah Kali Oyo, Kecamatan Nglipar, Kabupaten Gunung Kidul, Daerah Istimewa Yogyakarta yang menjadi daerah penelitian. Pada daerah pengkajian ini dijumpai singkapan batuan dengan total ketebalan hasil stratigrafi terukur sebesar 10,7 meter, yang dinilai cukup representatif untuk dilakukan analisis terhadap arah arus purba. Tujuan dilakukan penelitian ini adalah menyusun hasil kajian dengan mendapatkan data struktur sedimen serta variasi litologi pada jalur pengukuran stratigrafi terukur. Berdasarkan hasil pengamatan di lapangan didapati litologi penyusun berupa batugamping kalsilutit, batugamping kalkarenit, serta batugamping kalsirudit sedangkan untuk struktur sedimen penentu arah arus purba yang ditemukan pada daerah ini berupa slump dan cross-bedding. Berdasarkan data yang diperoleh, dilakukan analisis fasies dan arah arus purba, daerah ini diinterpretasikan masuk pada fasies foreslope serta winnowed edge sand dan didapati pola arah arus purba yaitu bipolar dan polymodal. Kata kunci: Formasi Oyo, Arus Purba, Fasies, Gunung Kidul
Co-Authors Al Hussein Flowers Rizqi Gil Lodar, Jaden Qoyyibi, Dava Saliham