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All Journal Jurnal Ilmu dan Teknologi Kelautan Tropis Jurnal Geologi Kelautan: Media Hasil Penelitian Geologi Kelautan
L. Arifin
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Biochemistry, Genetics & Molecular Biology Decision Sciences, Operations Research & Management Earth & Planetary Sciences Library & Information Science

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MEIOFAUNA (FORAMINIFERA) IN SEDIMENTS AND ITS RELATION TO WHITE SANDY BEACH OF SENGGIGI AND WATER CONDITION OFF WEST LOMBOK Kresna T. Dewi; L. Arifin; A. Yuningsih; Y. Permanawati
Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 4 No. 1 (2012): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
Publisher : Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (523.803 KB) | DOI: 10.29244/jitkt.v4i1.7805

Abstract

A development of meiofaunal data (foraminifera) from offshore area of West Lombok was conducted on 20 marine sediment samples. The samples were taken out using a grab sampler in 1997. The purpose of this study was to apply the formula of Foraminiferal Index by Hallock et al. (2003). Another purpose of this study was to recognize its relation of white sands of Senggigi beach that was dominated by Shlumbergerella floresiana. The result of analysis showed that the value of Foraminiferal Index (FI) was varies between 1.22 and 9.81. The low value of FI (<2) was found at sites that were close to the coastal area. The values FI >2 and <4 occur at five stations that gave indication of limited environment for coral growth. Value of FI >4 that showed good water condition was found in an area surrounding small islands of Gili Trawangan, Gili Meno, Gili Air and southern part of the study area. Based on the identification of foraminiferal specimens, the occurrence of Shlumbergerella floresiana was not abundant as it was accumulated in Senggigi beach. This result showed that this species did not come from samples studied but might come from marine sediment adjacent to the Senggigi beachKeywords: Benthic foraminifera, FORAM Index, west Lombok
STRUKTUR GEOLOGI SELAT MADURA JAWA TIMUR Arifin, L.; ⠀, Susilohadi; Setyadi, D.; Silalahi, I. R.; Kristanto, N. A.; Rahardjo, P.; Purwanto, C.
JURNAL GEOLOGI KELAUTAN Vol 19, No 2 (2021)
Publisher : Pusat Penelitian dan Pengembangan Geologi Kelautan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32693/jgk.19.2.2021.737

Abstract

Penelitian dilakukan di perairan Selat Madura yang berada diantara Pulau Madura dan Jawa Timur. Tujuan penelitian adalah untuk mengetahui kondisi geologi dan pola sedimentasi yang ditafsirkan dari data rekaman seimik pantul. Orientasi struktur geologi Selat Madura berarah barat-timur, serupa dengan orientasi zona Kendeng di daratan Jawa Timur. Struktur antiklin yang berkembang di darat menerus hingga Selat Madura yang ditunjukkan di beberapa pulau seperti P. Kambing dan P. Ketapang yang merupakan puncak-puncak antiklin.Pada lereng selatan antiklin P. Gili Genting dan P. Gili Raja batuan berumur Pliosen Akhir dan batuan Quarter mencirikan adanya penurunan cekungan yang cepat dan menerus. Poros cekungan ini diperkirakan diisi oleh sedimen dengan ketebalan lebih dari 500  m, dimana pada bagian antiklin kemungkinan ditempati oleh batuan berumur Tersier Akhir sebanding dengan batuan yang tersingkap pada kedua pulau di atas.
Co-Authors A. Yuningsih D. Setyadi, D. Kresna T. Dewi Kristanto, N. A. Purwanto, C. Rahardjo, P. Silalahi, I. R. Y. Permanawati ⠀, Susilohadi