SEDIMENTASI PASIR SEPANJANG PANTAI KULON PROGO, DAERAH ISTIMEWA YOGYAKARTA

Jurnal Geologi Kelautan (JGK)

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Field Value
 
Title SEDIMENTASI PASIR SEPANJANG PANTAI KULON PROGO, DAERAH ISTIMEWA YOGYAKARTA
 
Creator Noviadi, Yogi
Setiady, Deny
 
Subject
sedimentasi, pantai, sedimen;pasir dan besi;Kulon Progo
 
Description Pesisir Kulon Progo secara fisiografi merupakan bagian dari zona pegunungan selatan Jawa, berbatasan disebelah timur nya adalah zona Solo. Tujuan penelitian ini adalah untuk mengetahui proses sedimentasi endapan pasir pantai dan kemungkinan batuan sumber, berdasarkan data pemetaan karakteristik pantai, pengambilan sedimen pantai, georadar, dan analisis kimia di sepanjang pantai Perairan Kulon Progo. Sedimen Pasir tipe 1, di sepanjang pantai Kulon Progo merupakan pasir abu-abu yang merupakan campuran mineral hitam, kuarsa dan pecahan terumbu karang, dimana geomorfologi pantai datar sampai bergelombang (0o–30o). Sedimen pasir tipe 2, merupakan pasir hitam didominasi pasir besi, sedikit mineral kuarsa menempati morfologi sedimen pasir pantai yang datar. Berdasarkan data georadar kondisi geologi bawah permukaan sedimen pasir pantai Kulon Progo terdiri dari 2 sekuen yaitu sekuen A dan sekuen B. Sekuen A dicirikan oleh citra rekaman georadar parallel sampai medium amplitudo, merupakan lapisan sedimen pasir. Sekuen B dicirikan oleh pola paralel sampai amplitudo lemah yang tidak menerus, mengindikasikan sebagai pelapukan batuan pasir. Berdasarkan analisa kimia kandungan Rutil (TiO2), Besi (Fe), (FeO) dan (Fe2O3) banyak ditemukan pada sedimen pasir pantai daerah penelitian. Besi (Fe) merupakan unsur logam yang banyak ditemukan di daerah ini, kandungan Fe antara 1,26% - 10,52%. Sedangkan Rutil (TiO2) kandungannya antara 0,98 % sampai 1,4%.Kata kunci: sedimentasi, pantai, sedimen, pasir, dan besi, Kulon Progo The coastal of Kulon Progo physiographically is part of the Southern Mountain Zone of Java, where to the east is bordered by the Solo Zone. The aim of the study is to know sand sedimentation process, based on coastal characteristics map data, coastal sediment sampling, georadar data, and chemical analysis along the coastline of the Kulon Progo. Sand sediments type 1 along the Kulon Progo coastal composed of gray sand that mixed with opaque mineral, quartz and coral reef fragments, where the geomorphology of the coast is flat to undulating (0o – 30o). Sand sediment type 2 composed of black sand dominated by iron sand and minor quartz occupies the flats sand sediments morphology. Based on georadar data, subsurface geological conditios consists of 2 sequences, namely sequence A and sequence B. Sequence A is characterized by georadar image of parallel - medium amplitude, indicating sand sediment. Sequence B is characterized by parallel to discontinous weak amplitude, indicating a weathered sandstone. Based on chemical analysis Rutil (TiO2), Iron (Fe), (FeO) and (Fe2O3) are found in coastal sand sediments in the study area. Iron (Fe) is a metal element that many found in this area, Fe content is between 1.26%-10.52%. While Rutile (TiO2) is contains between 0.98%-1.4%.Keywords: sedimentation, coastal, sediment, sand and iron Kulon Progo
 
Publisher Pusat Penelitian dan Pengembangan Geologi Kelautan
 
Contributor
 
Date 2020-06-04
 
Type info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion

 
Format application/pdf
 
Identifier http://ejournal.mgi.esdm.go.id/index.php/jgk/article/view/583
10.32693/jgk.18.1.2020.583
 
Source JURNAL GEOLOGI KELAUTAN; Vol 18, No 1 (2020)
2527-8851
1693-4415
 
Language eng
 
Relation http://ejournal.mgi.esdm.go.id/index.php/jgk/article/view/583/487
 
Rights Copyright (c) 2020 JURNAL GEOLOGI KELAUTAN
 

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