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Pollen and Foraminifera Approaches to Identify Sediment Sources In The River Mouth Mahakam East Kalimantan Winantris, Winantris; Jurnaliah, Lia
Journal of Geoscience, Engineering, Environment, and Technology Vol 2 No 4 (2017): JGEET Vol 02 No 04 : December (2017)
Publisher : UIR PRESS

The central role of Mahakam River in the construction of Mahakam Delta is to supply sediment from terrestrial to the river mouth. The river upstream comes from Mount Camaru and the downstream part terminate at Makasar Strait. The surrounding area of the river is overgrown by wet tropical flora that produces pollen. The existence pollen in river sediments as an indicator that sediment came from terrestrial, and foraminifera as an indicator that sediment came from marine. The ratio changes of pollen to foraminifera show that there were differences of sediment source supply. The study was conducted at the river mouth. A shallow core, 200 cm depth, composed of sand and mud and sandy mud, from it taken vertically 11 samples to be analyzed pollen and foraminifera. Sample preparation was using standard methods acetolysis. Meanwhile, sample preparation of foraminifera using Hydrogen Peroxide method. Pollen found at all samples, but foraminifera only found in 8 samples. The data indicating that sedimentation process in the mouth of a river not only gets sediment supplies from terrestrial but also from marine. The quantity of pollen and foraminifera varies vertically. The frequency of pollen much higher than foraminifera that indicates of source sediments dominance came from terrestrial which carried by Mahakam river current. Sonneratia caseolaris pollen continuously found in all samples. Stictogongylus vandiemensis is species foraminifera the most common that followed by Ramulina confossa, both of them come from the sea particularly from the shallow sea.  

Pemodelan Kondisi Lingkungan Sag pond Sesar Lembang, Berdasarkan Analisis Kandungan Alga, Lembang, Jawa Barat Rachman, Rizki Satria; Winantris, Winantris; Jurnaliah, Lia; Fauzielly, Lili
Al-Kauniyah: Jurnal Biologi Vol 14, No 2 (2021): AL-KAUNIYAH JURNAL BIOLOGI
Publisher : Department of Biology, Faculty of Science and Technology, Syarif Hidayatullah State Islami

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15408/kauniyah.v14i2.15420

AbstrakAlga merupakan mikroorganisme fotosintesis yang tidak memiliki tubuh sejati dengan distribusi lingkungan yang sangat luas dan memiliki banyak fungsi, salah satunya sebagai indikator perubahan lingkungan. Wilayah Cekungan Bandung telah dilakukan penelitian dari beberapa aspek. Akan tetapi, penelitian terutama dari aspek alga yang memperlihatkan perubahan lingkungan belum dilakukan pada daerah tersebut. Penelitian ini dilakukan untuk melihat bagaimana perubahan lingkungan dari endapan sag pond bekas Danau Bandung pada wilayah Cekungan Bandung menggunakan keberagaman alga dan ukuran butir sedimen. Metode asam dilakukan untuk memisahkan alga dari endapan, serta deskripsi batuan dilakukan untuk melihat ukuran butir endapan pada lokasi penelitian. Analisis data dan pemodelan dilakukan dengan mengelompokkan alga sesuai dengan kondisi habitatnya yang terbagi menjadi kelompok Pinnularia, Euglena, Acrinastrum dan Dinobryon. Hasil penelitian menunjukkan bahwa lokasi penelitian mengalami empat kali perubahan lingkungan yang dibagi kedalam zona-zona dan subzona. Setiap zona tersebut diawali dengan kondisi air tercemar yang ditandai oleh peningkatan kelompok Euglena dan ukuran butir halus dari sedimen. Sedangkan pada bagian akhir, perairan memperlihatkan kondisi air normal yang ditunjukkan dengan peningkatan kelompok Pinnularia dan ukuran butir sedimen yang menjadi lebih kasar.AbstractAlgae is known as a photosynthetic microorganism that donâ€™t have a true body with very broad distributions of the environment. Algae have a lot of functions, one of which is an indicator of environmental change. The Bandung Basin area has been researched from several aspects. However, research especially from the algae aspect that shows environmental changes, has not been carried out in this area. This research was conducted to see how the environmental changes of Lake Bandung sag pond deposits in the Bandung Basin by using algae diversity and grain size deposits. The acetolysis method is carried out to see algae content in the sediment, and rock description is carried out to see the grain size of the sediment in the study area. Furthermore, data analysis and modeling were conducted by grouping algae according to environmental conditions which are divided into Pinnularia group, Euglena group, and other groups. The result showed that the study area occurred four times in environmental changes which were divided into zones and subzones. Each zone initially had polluted water conditions characterized by an increase in Euglena groups and the fine grain size of sediment. While in the end, the waters showed normal water conditions characterized by an increase in Pinnularia group and the grain size of the sediment became coarser.

Pollen and Foraminifera Approaches to Identify Sediment Sources In The River Mouth Mahakam East Kalimantan Winantris Winantris; Lia Jurnaliah
Journal of Geoscience, Engineering, Environment, and Technology Vol. 2 No. 4 (2017): JGEET Vol 02 No 04 : December (2017)
Publisher : UIR PRESS

The central role of Mahakam River in the construction of Mahakam Delta is to supply sediment from terrestrial to the river mouth. The river upstream comes from Mount Camaru and the downstream part terminate at Makasar Strait. The surrounding area of the river is overgrown by wet tropical flora that produces pollen. The existence pollen in river sediments as an indicator that sediment came from terrestrial, and foraminifera as an indicator that sediment came from marine. The ratio changes of pollen to foraminifera show that there were differences of sediment source supply. The study was conducted at the river mouth. A shallow core, 200 cm depth, composed of sand and mud and sandy mud, from it taken vertically 11 samples to be analyzed pollen and foraminifera. Sample preparation was using standard methods acetolysis. Meanwhile, sample preparation of foraminifera using Hydrogen Peroxide method. Pollen found at all samples, but foraminifera only found in 8 samples. The data indicating that sedimentation process in the mouth of a river not only gets sediment supplies from terrestrial but also from marine. The quantity of pollen and foraminifera varies vertically. The frequency of pollen much higher than foraminifera that indicates of source sediments dominance came from terrestrial which carried by Mahakam river current. Sonneratia caseolaris pollen continuously found in all samples. Stictogongylus vandiemensis is species foraminifera the most common that followed by Ramulina confossa, both of them come from the sea particularly from the shallow sea.

PENDEKATAN KUANTITATIF DALAM PENENTUAN ASOSIASI FASIES LAUT DALAM FORMASI HALANG PADA SUNGAI KALIGINTUNG, JAWA TENGAH MUHAMAD AGAM SUBAGJA; Djadjang Jedi Setiadi; Lia Jurnaliah; Ildrem Syafri; Syaiful Alam; Dhanu Elfitra
Bulletin of Scientific Contribution: GEOLOGY Vol 17, No 3 (2019): Bulletin of Scientific Contribution : GEOLOGY
Publisher : Fakultas Teknik Geologi Universitas Padjadjaran

Penggunaan metode kuantitatif cukup berkembang pada tahun 1950an dalam bidang sedimentologi dan stratigrafi terutama dalam membantu menjelaskan asosiasi fasies, proses pembentukannya dan lingkungan pengendapan. Lokasi penelitian berada koordinat 07° 30' 00,0" – 07° 30’ 30.0” LS dan 109° 27' 30,0" – 109° 28’ 10,0” BT yang secara administratif berada pada Provinsi Jawa Tengah. Daerah penelitian termasuk ke dalam Formasi Halang. Tujuan dari penelitian ini adalah untuk mengetahui model asosiasi fasies lokal yang terbentuk pada daerah penelitian. Pengambilan data dilakukan dengan metode penampang stratigrafi terukur pada sebagian lintasan Sungai Kaligintung sedangkan pengolahan data dibantu oleh metode kuantitatif berupa analisis Markov Chain dan Binomial Probability untuk mengetahui hubungan antar fasies. Pada daerah penelitian terdapat 13 litofasies yaitu Diorganized gravels (A1.1), Normally-graded Pebbly Sand (A2.7), Thick-bedded disorganized sand (B1.1), Thin-bedded coarse-grained sand (B1.2), Parallel-stratified sand (B2.1), Thick-bedded sand-mud couplet (C2.1), Medium-bedded sand-mud couplet (C2.2), Thin-bedded sand-mud couplet (C2.3), Mud-dominated sand-mud couplet (C2.4), Mottled muddy sand (C1.2), Structureless silt (D1.1), Structureless mud (E1.1) dan Contorted strata (F2.1). Adapun asosiasi fasies pada daerah penelitian terdiri atas Channel fill deposit, Levee deposit, Lobe deposit dan Interchannel deposit. Kata kunci : Binomial Probability, Formasi Halang, Litofasies, Markov Chain.

BIOZONASI FORAMINIFERA PLANKTONIK DI LINTASAN SUNGAI CIPAMINGKIS, DAERAH JONGGOL, PROVINSI JAWA BARAT Mohamad Solihin; Abdurrokhim Abdurrokhim; Lia Jurnaliah
Bulletin of Scientific Contribution: GEOLOGY Vol 14, No 1 (2016): Bulletin of Scientific Contribution
Publisher : Fakultas Teknik Geologi Universitas Padjadjaran

The study was conducted at Jatiluhur Formation in Cipamingkis River, Jonggol, Bogor, West Java. The purpose of this study is to determine biodatum of planktonic foraminifera and age specifications contained in Jatiluhur Formation. The method that used in this study based on measured section data and micropaleontology analysis quantitatively. Cipamingkis River measured section approximately 8 km, divided by 4 sections. Measured section and each of them used to 10 samples to biostratigraphy analysis. Based on biostratigraphy analysis of planktonic foraminifera, Jatiluhur Formation depositioned at Middle Miocene – Late Miocene (N13 – N16). Biodatum of foraminifera found in study area are Globigerinoides subquadratus, Globorotalia siakensis Globorotalia mayeri, Globorotalia menardii, and Globorotalia acostaensis. Keywords : Cipamingkis river, Biodatum, Planktonic Foraminifera, Jatiluhur Formation. Kajian ini dilakukan pada Formasi Jatiluhur di Sungai Cipamingkis, Daerah Jonggol, Kabupaten Bogor, Jawa Barat. Tujuan penelitian ini untuk menentukan biodatum foraminifera planktonik dan spesifikasi umur yang terdapat pada Formasi Jatiluhur. Metode yang digunakan dalam penelitian ini adalah berdasarkan data penampang stratigrafi terukur dan analisis mikropaleontologi secara kuantitatif. Sekitar 8 km lintasan sungai Cipamingkis, dapat dibagi menjadi 4 penampang stratigrafi terukur dan masing-masing penampang digunakan 10 conto batuan untuk analisis biostratigrafi. Berdasarkan analisis biostratigrafi dari foraminifera planktonik, Formasi Jatiluhur terendapkan pada kala tengah Miosen Tengah – awal Miosen Akhir (N13 – N16). Biodatum Foraminifera yang ditemukan di daerah penelitian adalah Globigerinoides subquadratus, Globorotalia siakensis Globorotalia mayeri, Globorotalia menardii, dan Globorotalia acostaensis. Kata Kunci : Sungai Cipamingkis, Biodatum, Foraminifera planktonik, Formasi Jatiluhur.

DIVERSITAS FORAMINIFERA BENTONIK KECIL DI DAERAH PERAIRAN SEMARANG (LEMBAR 1409) JAWA TENGAH Lia Jurnaliah -
Bulletin of Scientific Contribution: GEOLOGY Vol 9, No 3 (2011): Bulletin of Scientific Contribution
Publisher : Fakultas Teknik Geologi Universitas Padjadjaran

Location of seafloor sediment is Semarang waters (sheet map of 1409), Central Java. Geographically, research area is in coordinate 109°30'-111°00' and 06°00' - 07°00'.Twenty samples of two phi seafloor sediment were examined in order to know diversity of small benthic foraminifera. Based on quantitative analysis, small benthic foraminifera are composed of 7 Order, 27 Families, 38 Genus, 57 Species, and 235889 Specimen. The calculation of index diversity are shown between 0,3 - 1,

PERUBAHAN LINGKUNGAN PENGENDAPAN PADA KALA MIOSEN AKHIR-PLIOSEN AWAL BERDASARKAN KUMPULAN FORAMINIFERA BENTONIK KECIL PADA LINTASAN KALI JRAGUNG, KABUPATEN DEMAK, JAWA TENGAH Lia Jurnaliah; Ildrem Syafri; Adjat Sudrajat; Roebiyanto Kapid
Bulletin of Scientific Contribution: GEOLOGY Vol 15, No 1 (2017): Bulletin of Scientific Contribution
Publisher : Fakultas Teknik Geologi Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (724.689 KB)

ABSTRACTResearch area is located in Demak regency, Northern Central Java. Sixteen samplesediments was carried out from 140 meter section in Jragung River with 10 meter interval.Species and specimen of small benthic foraminifera was quantified in every 1 (one) gramdry sample sediment. Cluster analyses of small benthic foraminifera assemblages showedthat research area is comprises of 4 (four) biofacies. There are Biofacies A-JR (deep seawith middle bathyal zone), biofacies B-JR (shallow sea with outer shelf zone), biofacies C-JR (deep sea with middle bathyal – abyssal zone) and biofacies D-JR (deep sea withmiddle bathyal – lower bathyal zone). Eventually, during Late Miocene – Early Pliocenethere were 8 (eight) times fluctuate environmental (bathymetric zone) changes from deepsea to shallow sea.Key words: Small benthic foraminifera, biofacies, deep sea, shallow seaABSTRAKDaerah penelitian terletak di Kabupaten Demak, Jawa Tengah. Sebanyak 16 sampelsedimen diambil pada LIntasan Kali Jragung sepanjang 140 meter dengan interval 10meter. Penghitungan jumlah spesies dan jumlah individu foraminifera bentonik kecildilakukan pada setiap 1 (satu) gram sampel sedimen kering. Berdasarkan analisis klusterterhadap kumpulan foraminifera bentonik kecil, daerah penelitian terbagi menjadi 4(empat) biofasies, yaitu: Biofasies A-JR dengan lingkungan laut dalam (zona batialtengah); Biofasies B-JR dengan lingkungan laut dangkal (zona paparan luar); BiofasiesC-JR dengan lingkungan laut dalam (zona batial tengah-zona abisal) dan Biofasies D-JRdengan lingkungan laut dalam (zona batial tengah-zona batial bawah). Selama KalaMiosen Akhir-Pliosen Awal daerah penelitian mengalami 8 (delapan) kali perubahanlingkungan laut (zona batimetri) yang fluktuatif dari laut dalam menjadi laut dangkal.Kata Kunci: Foraminifera bentonik Kecil, biofasies, laut dalam, laut dangkal

KARAKTERISTIK BATUAN SEDIMEN BERDASARKAN ANALISIS PETROGRAFI PADA FORMASI KALIBENG ANGGOTA BANYAK Novianti Wahyuni Purasongka; Ildrem Syafri; Lia Jurnaliah
Bulletin of Scientific Contribution: GEOLOGY Vol 13, No 1 (2015): Bulletin of Scientific Contribution
Publisher : Fakultas Teknik Geologi Universitas Padjadjaran

Administratively, the research areas included in the district of Semarang, Central Java Province. This research was conducted at Jeragung River with the object of claystone and sandstone. In physiographic, rocks in the study area are in Kendeng Basin, and parts of Anggota Banyak Kalibeng Formation. This study aims to determine the characteristics of sedimentary rocks mainly sandstones, based on petrographic analysis to determine the source of the sediment and diagenesis processes that formed. Based on observations of six sandstone samples from areas of research included in Feldspatic Wacke. Provenance analysis of six samples of sandstone with using Dickinson and Suczek triangles, shows the origin of sediment is arc magmatic. Diagenesis phase which occurs is eogenesis characterized by compacting and leaching, mesogenesis marked by cementation and recrystallization, as well as the replacement and deformation marks telogenesis process.

ZONASI PALEONTOLOGI CEKUNGAN KUTAI BAGIAN BAWAH, DAERAH BALIKPAPAN DAN SEKITARNYA, PROVINSI KALIMANTAN TIMUR Yuyun Yuniardi -; Rahmat Fakhrudin -; Lia Jurnaliah -
Bulletin of Scientific Contribution: GEOLOGY Vol 8, No 2 (2010): Bulletin of Scientific Contribution
Publisher : Fakultas Teknik Geologi Universitas Padjadjaran

Fossil of Foraminifera, Nannoplankton, and Pollen were got into rock sample in lower Kutai Basyn and very interesting to do research. Paleontology zone were made for deliniation of rocks formation in lower Kutai Basyn. Paleontology zone divided into three part : Foraminifera zone, Pollen zone, and Nannoplankton zone.

LINGKUNGAN PENGENDAPAN SATUAN BATULEMPUNG SISIPAN BATUPASIR PADA FORMASI KEREK DAERAH JUWANGI DAN SEKITARNYA, BERDASARKAN KARAKTERISTIK LITOLOGI, ANALISIS STRUKTUR SEDIMEN, DAN KANDUNGAN FOSIL BENTONIK Hana Morina; Ildrem Syafri; Lia Jurnaliah
Bulletin of Scientific Contribution: GEOLOGY Vol 12, No 3 (2014): Bulletin of Scientific Contribution
Publisher : Fakultas Teknik Geologi Universitas Padjadjaran

The research area is located in the Juwangi, Grobogan District, Central Java Province. Geographically located between 110o 44’ 19,536” BT – 110o 49’ 19,5384” BT dan 7o 13’ 53,2704” LS – 7o 8’ 53,2716” LS. Research using the method geological surface mapping. Determination of depositional environment unit based on the characteristic of lithology, sedimentary structures, and benthic foraminiferal. Based on the characteristic of lithology, this unit composed of mudstone and sandstone. Mudstone has a consideralable thickness, as sandstones insert. Sedimentary structures that are found in the form of parallel lamination and cross lamination shows that its transport medium is water. Benthic foraminiferal analysis result indicate that the bathymetry zone is outer neritic. So it can be estimated that the depositional environment of this unit are in the shallow marine.

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