GEOLOGI DAN PETROGENESA BATUAN ANDESIT DESA SUMBERTANGKIL DAN SEKITARNYA KECAMATAN TIRTOYUDO KABUPATEN MALANG PROPINSI JAWA TIMUR

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ABSTRACT

The research setting, administratively, is located in Sumbertangkil Village and its
surrounding, Tirtoyudo District, Malang Regency, East Java Province. It is
astronomically located at the coordinates of X: 700000-708000 and Y: 90790009084000.
The
research
aimed
at
figuring
out
the
geological
condition
of
research

setting

consisting of geomorphology, stratigraphy, geological structure,
geological history, and petrogenesis determination of andesite rock.
Based on the analysis result of petrography, the dominant andesite rock found in
the research setting is basaltic andesite with smooth-middle grain size. The
mineral compositions are plagioclase feldspar (40%), pyroxene (15%), glass
(15%), opaque (5%), and base mass of glass (40%). In short, the andesite rock on
the research setting was formed extrusively (lava).
Based on the relief, lithology, genesis, and morphology appearance in the field,
the landforms of research setting are Structural (S), Denudasional (D), and
Fluvial (F). The sequence of rock units from old to young on the research setting
are tuff, volcanic breccias, andesitic lava, coal-inserted limestone, and
sedimentary alluvial as the youngest unit in the research setting.


Key words: Andesite, Malang, Lithology.

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Ketersediaan

S12-981

98

Koleksi Skripsi

Tersedia

Informasi Detail

Judul Seri

-

No. Panggil

98

Penerbit

Surabaya : ITATS., 2016

Deskripsi Fisik

-

Bahasa

Indonesia

ISBN/ISSN

-

Klasifikasi

NONE

Tipe Isi

-

Tipe Media

-

Tipe Pembawa

-

Edisi

-

Subjek

Andesite, Malang, Lithology.

Info Detail Spesifik

NPM 12.2009.1.00115 NILAI B

Pernyataan Tanggungjawab

Pembimbing : Theresia Maria C.A., ST. MT.

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