KORELASI GEOKIMIA BATUAN, FASIES GUNUNGAPI DAN KUALITAS AIR TANAH PADA GUNUNG TODOKO-RANU KECAMATAN SAHU, HALMAHERA BARAT, MALUKU UTARA

LARATMASE, LOTONG ROBERTUS VITALIO (2023) KORELASI GEOKIMIA BATUAN, FASIES GUNUNGAPI DAN KUALITAS AIR TANAH PADA GUNUNG TODOKO-RANU KECAMATAN SAHU, HALMAHERA BARAT, MALUKU UTARA. Masters thesis, UPN "Veteran" Yogyajarta.

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Abstract

VIII
Sari
Fisiografi Pulau Halmahera dapat dibagi menjadi tiga mandala fisiografi lokasi
penelitian berada pada fisiografi halmahera barat bagian Utara. Geomorfologi terbagi
menjadi dua bentuk asal yaitu bentuk asal vulkanik terbagi menjadi Punggungan Aliran
Lava, Dataran Tinggi Aliran Lava, Punggungan Aliran Piroklastik, Kaldera Gunungapi,
Kerucut Lava, Padang Solfatara, dan bentuk asal marin yaitu Bibir Pantai Sampai Muka
Laut. Pengelompokan satuan batuan terbagi menjadi 12 yaitu Todoko-Ranu lava andesit-
basaltic 1, Todoko-Ranu lava andesit-basaltik 2, Todoko-Ranu lava andesit-basaltik 3,
Todoko-Ranu lava andesit 4, Anak Todoko-Ranu lava andesit, Uno lava andesit-basaltik
1, Uno lava andesit-basaltik 2, B’anyo Doi lava andesit-basaltik 1, Uno laharik, B’anyo
Doi laharik, Todoko-Ranu piroklastik jatuhan, Todoko-Ranu laharik. Fasies gunungapi
pada daerah penelitian terbagi menjadi fasies sentral proksimal dan medial. Geokimia
unsur utama batuan pada diagram AFM (Alkali, Feroksida, dan Magnesia) masuk pada
seri Tholeitic dan Calc-Alkaline, diagram afanitas masuk pada seri Calc-Alkanine, dan
pada diagram Tas untuk penamaan batuan masuk pada Andesit-basaltik dan Andesit.
Sistem hidrogeologi terbagi menjadi sistem akuifer rekanan, sistem akuifer antar butir
dan sistem akuitar rekahan. Mata air yang ditemukan pada daerah penelitian yaitu mata
air kontak, mata air depresi dan mata air celah. Fasies air tanah daerah penelitian terbagi
menjadi tiga fasies yaitu: Sodium cloride, Magnesium bicarbonate, Mixed yang dimana
dari hasil membuktikan bahwa kandungan unsur kimia air tanah berkaitan dengan unsur
kimia batuan dengan ciri yang bebeda beda. Kualitas air tanah daerah penelitian
mengacu pada perkemenkes 2017 no 37 tentang air higenis jika dilihat dari parameter
fisik kimia dan biologi didapatkan beberapa sampel air yang dinyatakan layak dan
beberapa sampel tidak layak.
Kata kunci : Geokimia unsur utama batuan dan geohidrologi dan kualitas air
tanah gunung Todoko-Ranu
IX
Abstract
The physiography of Halmahera Island can be divided into three physiographic
mandalas. The research location is in the northern part of West Halmahera
physiography. Geomorphology is divided into two original forms, namely volcanic
origin forms which are divided into Lava Flow Ridges, Lava Flow Plateaus, Pyroclastic
Flow Ridges, Volcanic Calderas, Lava Cones, Solfatara Fields, and marine forms of
origin, namely Coastal Edge to Sea Level. The grouping of rock units is divided into 12,
namely Todoko-Ranu andesite-basaltic lava 1, Todoko-Ranu andesitic-basaltic lava 2,
Todoko-Ranu andesitic-basaltic lava 3, Todoko-Ranu andesitic lava 4, Todoko-Ranu
andesitic lava, Uno lava andesitic-basaltic 1, Uno andesitic-basaltic lava 2, B'anyo Doi
andesitic-basaltic lava 1, Uno lavaric, B'anyo Doi lavaric, Todoko-Ranu pyroclastic fall,
Todoko-Ranu lavaric. The volcanic facies in the study area is divided into proximal and
medial central facies. The geochemistry of the main rock elements in the AFM diagram
(Alkali, Feroxide, and Magnesia) is included in the Tholeitic and Calc-Alkaline series,
the affinity diagram is entered in the Calc-Alkanine series, and in the Tas diagram for
naming rocks it is entered in Andesite-basaltic and Andesite. The hydrogeological
system is divided into partner aquifer systems, inter-grain aquifer systems and fracture
aquifer systems. The springs found in the research area are contact springs, depression
springs and fissure springs. The groundwater facies in the study area is divided into
three facies, namely: Sodium chloride, Magnesium bicarbonate, Mixed which from the
results proves that the chemical element content of groundwater is related to rock
chemical elements with different characteristics. The quality of groundwater in the
research area refers to the 2017 Ministry of Health Regulation No. 37 concerning
hygienic water. When viewed from the physical, chemical and biological parameters,
several water samples were found to be feasible and some samples were not feasible.
Keywords: Geochemistry of the main rock elements and geohydrology and
groundwater quality of Mount Todoko-Ranu

Item Type:	Thesis (Masters)
Uncontrolled Keywords:	Geochemistry of the main rock elements and geohydrology and groundwater quality of Mount Todoko-Ranu
Subjects:	Q Science > QE Geology
Divisions:	Faculty of Engineering, Science and Mathematics > School of Engineering Sciences
Depositing User:	Eko Yuli
Date Deposited:	21 Jun 2023 04:38
Last Modified:	21 Jun 2023 04:40
URI:	http://eprints.upnyk.ac.id/id/eprint/36074

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