POTENSI ENDAPAN PASIR DAN GUMUK PASIR HUBUNGAN NYA DENGAN BATUAN INDUK DI PANTAI PAMEUNGPEUK, KABUPATEN GARUT, PROVINSI JAWA BARAT
Abstract
Potensi sumberdaya pantai daerah penelitian di pantai perairan Pameungpeuk dan sekitarnya, yaitu:sedimen pasir dan gumuk pasir.Tujuan dari tulisan ini adalah untuk mendapatkan data dan informasi sedimen pasir dan gumuk pasir di daerah penelitian dan hubungan nya dengan batuan induk.Metoda penelitian terdiri dari pemetaan karakteristik pantai, pengambilan sedimen pantai, bor tangan pantai, analisisi besar butir dan analisis mineral.
Berdasarkan karakteristik pantai di daerah penelitian terdiri dari pantai berpasir putih, pantai berpasir coklat dan pantai berpasir hitam.Pantai berpasir hitamdidominasi oleh mineral magnetit, pantai berpasir coklat didominasi oleh mineral magnetit dan sedikit pecahan cangkang moluska, pantai berpasir putih didominasi oleh pecahan cangkang. Berdasarkan analisis mineral di daerah penelitian terdiri dari magnetit, hemati, limonit, ilmenite, rutil, hornblenda, piroksen, augit.diopsid, biotit dan epidot
Berdasarkan pengukuran dengan theodolit pada pantai bergumuk pasir, memiliki kemiringan pantai sedang hingga tinggi (slope 21° - 60°), dengan lebar pantai bervariasi mulai dari 30 meter sampai 60 meter, serta tinggi gumuk pasir mulai dari 3 meter sampai 6 meter.
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