Open AccessLINGKUNGAN PENGENDAPAN SEDIMEN PERANGKAP GAS BIOGENIK DI DELTA SUNGAI KAPUAS KALIMANTAN BARAT
Author(s) -
Hananto Kurnio,
Yudi Darlan
Publication year - 2016
Publication title -
jurnal geologi kelautan
Language(s) - English
Resource type - Journals
eISSN - 2527-8851
pISSN - 1693-4415
DOI - 10.32693/jgk.7.2.2009.173
Subject(s) - delta , river delta , swamp , geology , hydrology (agriculture) , deposition (geology) , geomorphology , ecology , sediment , biology , geotechnical engineering , engineering , aerospace engineering
Lingkungan pengendapan delta Sungai Kapuas di Kalimantan Barat terdiri dari dataran delta atas, dataran delta bawah dan lingkungan marin. Pada wilayah pesisir, dataran delta bawah terdiri dari kanal cabang (distributary channels), rawa (swamp) pada pulau-pulau delta dan pantai.
Lingkungan pengendapan marin terdiri muka delta (delta front) dan prodelta; dengan lingkungan muka delta sedimen bersifat pasiran karena mengendapkan muatan sedimen (bed load) dari sungai, sedangkan pada lingkungan prodelta, sedimen yang diendapkan bersifat suspensi pada paparan dengan pengaruh proses marin lemah.
Reservoar pasir pada kanal cabang dan pantai purba delta Sungai Kapuas merupakan tempat akumulasi gas biogenik.
Kata kunci: lingkungan pengendapan delta, gas biogenik, Sungai Kapuas
Deltaic deposition environment of Kapuas River in Western Kalimantan is consisted of upper delta plain, lower delta plain and marine environment. Within coastal zone, lower delta plain can be classified into distributary channels, swamp, deltaic islands and coasts.
Marine environment is composed of delta front and prodelta; with delta front environment characterized by sandy sediments derived from river bed load. While prodelta sediments are suspension materials deposited in shelf of weak marine influences.
Sand reservoirs at paleo distributary channels and paleo coasts of Kapuas River delta is the media for biogenic gas accumulations.
Key words: deltaic deposition environments, biogenic gas, Kapuas River