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Abstrak :
Pantai Bagedur berada di Kabupaten Lebak, Banten memiliki karakteristik sedimen yang diduga terendapkannya endapan tsunami purba. Daerah penelitian termasuk ke dalam Endapan Aluvium (Qa) dan Endapan Undak Pantai (Qc) pada Peta Regional Lembar Cikarang (Sudana & Santoso, 1992). Sampel sedimen lepas bawah permukaan diambil menggunakan metode lubang bor tangan pada delapan stasisun penelitian dengan kedalaman yang bervariasi. Penelitian kali ini berfokus terhadap studi provenance dari endapan tsunami purba dan juga karakteristiknya berdasarkan geokimia. Metode analisis yang digunakan berupa analisis petrografi, X-Ray Diffraction (XRD), dan X-Ray Fluorescence (XRF). Hasil analisis petrografi menunjukkan bahwa tipe provenance utama dari daerah penelitian menurut diagram Q-F-L dan Qm-F-Lt (Dickinson & Suzcek, 1979) adalah recycled orogen. Kerangka tektonik yang mempengaruhi dari tipe provenance recyceled orogen merupakan zona subduksi dan diinterpretasikan ada kaitannya dengan subduksi di selatan Pulau Jawa. Berdasarkan analisis XRD dan XRF, didapatkan bahwa didominasi oleh senyawa SiO2, Al2O3, dan Fe2O3 dan pada stasiun BG 06 memiliki unsur yang dominanas berasal dari Laut. Endapan tsunami mengalami erosi dan pelapukan yang cukup tinggi. ...... Bagedur Coast in Lebak Districts, Banten has sediment characteristic that assumed as deposit of paleotsunami deposit. The Research area consisted of Alluvium Deposit (Qa) and Beach Terrace Deposit (Qc) from Geological Map of Cikarang (Sudana & Santoso, 1992). Loose Sediment sample have collected using Hand Auger drilling methods from eight observation stations with various depth. This research is focused in provenance study from paleotsunami deposit and geochemistry characteristics. The method that used is petrography analysis, X-Ray Diffraction (XRD), and X-Ray Fluorescence (XRF). The result of petrography analysis show the type of provenance from research area according to Q-F-L dan Qm-F-Lt diagram (Dickinson & Suzcek, 1979) is recycled orogen. Geological setting that control provenance type of recycled orogen is subduction tectonic regime and interpreted to be related with subduction in South of Java. Based on XRD and XRF analysis, SiO2, Al2O3, and Fe2O3 are the dominating compound and from BG 06 station can be concluded the dominant deposit is originate from marine environment. Paleotsunami deposit have been undergone extreme erosion and weathering.

Abstrak :
Formasi Walat merupakan salah satu formasi yang tersingkap pada daerah Gunung Walat, Kecamatan Cibadak, Kabupaten Sukabumi yang berumur Oligosen Awal (Effendi, 1998). Berdasarkan Effendi (1998) Formasi Walat termasuk kedalam Peta Geologi Regional Lembar Bogor. Pada penelitian kali ini studi provenance menjadi fokus utama, pengambilan sampel genggam serta pengukuran data stratigrafi dilakukan di lapangan untuk membantu analisis provenance daerah penelitian. Metode analisis utama yang digunakan adalah metode petrografi, berdasarkan klasifikasi batupasir Folk (1974) batupasir yang didapatkan di lapangan merupakan Quartzarenite, Sublitharenite dan Litharenite. Berdasarkan analisis petrografi, provenance utama daerah penelitian berdasarkan diagram Q-F-L dan Qm-F-Lt (Dickinson & Suzcek, 1979) adalah recycled orogen sedangkan sub-provenance berdasarkan diagram Qp-Lv-Ls dan Qm-P-K (Dickinson & Suzcek, 1979) ialah collision orogen dan plutonic-arc provenance. Kerangka tektonik yang memengaruhi tipe recycled orogen salah satunya ialah collision orogen yang diinterpretasikan berasal dari Pegunungan Meratus di Kalimantan, karena karakteristik batupasir yang didapatkan di lapangan dan juga berdasarkan keadaan geologi pada masa Oligosen Awal serta data dari analisis arus purba. ......The Walat Formation is one of the formations exposed in the Gunung Walat area, Cibadak District, Sukabumi Regency which is of Early Oligocene age (Effendi, 1998). Based on Effendi (1998) the Walat Formation is included in the Regional Geological Map of Bogor. In this study, provenance studies were the focus. Hand-held sampling and stratigraphic data measurements were taken out from the field to help analyze the provenance of the study area. The main analytical method used is petrographic analysis, based on the Folk classification of sandstones (1974) the sandstones found in the field are Quartzarenite, Sublitharenite and Litharenite. Based on the petrographic analysis of the main provenance of the study area based on the Q-F-L and Qm-F-Lt diagrams (Dickinson & Suzcek, 1979) is recycled orogen while the sub-provenance is based on the Qp-Lv-Ls and Qm-P-K diagrams (Dickinson & Suzcek, 1979) is collision orogen and plutonic-arc provenance. One of the tectonic frameworks that influences the type of recycled orogen is the collision orogen which is interpreted to originate from the Meratus Mountains in Kalimantan due to the characteristics of the sandstones obtained in the field and based on geological conditions during the Early Oligocene as well as data from analysis of palaeocurrent.

Abstrak :
This article introduces two interconnected approaches to provenance research on anthropological facial plaster-casts taken from living individuals. It focuses on three series of facial casts taken by Dutch anthropologist Johannes Pieter Kleiweg de Zwaan (1875-1971) in the Netherlands East Indies in 1907 and 1910. It suggests that “reading” the facial casts as an archive of faces and an archive of plaster has the potential to reveal information systematically left out in their object biographies. Through this reading process, the colonial networks of control and power asymmetries which made the plaster-casting possible are examined. It seeks out additional information to bring the object closer to the person whose face was appropriated for various colonial ends. This epistemological experiment explores the first steps which can be taken to create a decolonial view of the large anthropological plaster-cast collections in European museums which have been left anonymous for decades.

Abstrak :
Tanjung Layar adalah sebuah situs geologi di Bayah Dome Geopark. Situs ini menyingkap Formasi Cimapag yang terdiri dari batupasir, batulempung, tuf, dan breksi. Penelitian ini bertujuan untuk mengidentifikasi batuan asal dan kondisi geologi regional yang membentuk situs ini untuk memperluas sejarah geologi Kubah Bayah, meningkatkan nilai asesmen geowisata Situs Tanjung Layar, dan mengembangkan ekonomi masyarakat setempat. Metode yang digunakan adalah pembuatan log stratigrafi, pengukuran indikator paleocurrent, dan analisis petrografi untuk menjelaskan tatanan tektonik, indeks pelapukan, dan paleogeografi batuan asal. Hasil penelitian menunjukkan adanya tiga asosiasi fasies batuan di Situs Tanjung Layar, yakni Asosiasi Fasies Laut Dangkal Dominasi Badai (ASF 1), Asosiasi Fasies Turbidit Channel (ASF 2), dan Asosiasi Fasies Turbidit Levee (ASF 3). Plot hasil analisis petrografi pada diagram Dickinson & Suczek (1979) dan Weltje et al. (1998) menunjukkan batuan asal memiliki tatanan tektonik recycled orogen dan magmatic arc, memiliki relief sedang hingga tinggi, dan beriklim sublembap hingga semikering. Arah paleocurrent menunjukkan arus berorientasi barat daya – timur laut. Perbandingan dengan paleogeografi Sundaland pada umur Miosen Awal (Hall, 2013) menunjukkan batuan asal berkaitan dengan kepulauan vulkanik di sisi timur laut wilayah penelitian yang terbentuk akibat subduksi Kerak Samudera Hindia terhadap Kerak Benua Eurasia. ......Tanjung Layar is a geological site in Bayah Dome Geopark. The site is an outcrop of the Cimapag Formation which consists of sandstone, mudstone, tuff, and breccia. This research aims to identify the provenance and regional geology that forms this site to expand the geological history of the Bayah Dome, increase geotourism assessment value of Tanjung Layar, and help the development the locals’ economy. The methods used were measured stratigraphic log, paleocurrent indicator measurement, and petrographic analysis to explain the tectonic setting, weathering index, and paleogeography of the provenance. The results show three different facies associations at Tanjung Layar, namely Storm Dominated Shallow Marine Facies Association (ASF 1), Turbidite Channel Facies Association (ASF 2) and Turbidite Levee Facies Association (ASF 3). Petrographic analysis results plotted over the Dickinson & Suczek (1979) and Weltje et al. (1998) diagrams show the provenance has recycled orogen and magmatic arc tectonic settings, have moderate to high relief, and subhumid to semiarid climate. The paleocurrent has southwest – northeast orientation. Comparison with Early Miocene paleogeography of Sundaland (Hall, 2013) shows the provenance are related to volcanic islands northeast of the research area, which is formed by subduction of Indian Ocean Crust against Eurasian Continental Crust.