Batuan Karbonat
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Transcript of Batuan Karbonat
![Page 1: Batuan Karbonat](https://reader035.fdocument.pub/reader035/viewer/2022082205/577c80471a28abe054a7fd78/html5/thumbnails/1.jpg)
Porositas
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(a) Intergranular porosity; (b) Gabungan antara Intergranular dan itragranular/interparticle
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(a) Intercrystalline porosity (dolomitisasi)(b) Fenestral porosity (lebih besar dari celah antar butiran)(c) Moldic porosity (pelarutan grains)
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(d) Vuggy porosity (pelarutan; memotong fabrik batuan)
(e) Fracture porosity
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Porositas
� Fabric selective = porositas primer
� Intergranular & intragranular = primery atau depositional (sedimentasi)
� Not fabric selective = porositas sekunder� Not fabric selective = porositas sekunder
� Intercrystalline, fenestral, moldic, vuggy, fracture = secondary atau post-depositional
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Stylolite
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Komposisi Keluarga
Batuan
Deskripsi dan nama
Calcite Limestone Limestone = aphanitic – phaneritic rock dengankomposisi calciteTravertine = aphanitic – phaneritic, leyered rock,biasanya berwarna terang,. Diendapkan melalui biasanya berwarna terang,. Diendapkan melalui airtanah atau permukaan terkait dengan hot springTufa = cellular travertineCaliche = putih, kapuran (chalky), menyerupai travertin yang berkembang di soil layerChalk = lunak, rapih, porous, batugamping berwarna terangSparite = crystalline limestoneMicrite = lime mudstone
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Komposisi Keluarga
Batuan
Deskripsi dan nama
Dolomite Dolostone Dolostone = aphanitic-phaneritic rocks Dolomite Dolostone Dolostone = aphanitic-phaneritic rocks dengan komposisi dominan oleh dolomiteDolomudstone = aphanitic dolostoneMicrodolostone = cryptocrystalline –aphanitic dolostoneDolosparite = crystalline dolostone
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Klasifikasi Dunham (1962)
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Dunham-type (1962) classification of carbonate rocksa) Definisi dari tipe limestoneb) Sketsa tekstur
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Klasifikasi batuan karbonat lebih detilberdasarkan tatanama Dunham (1962)
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Texture Class. of Reef Limestone
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Classification of Clastic Limestone (Cuffey, 1985)
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Grabau-type classification of Group A (allochemical) rocks
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Grabau-type classification of Group A (allochemical) rocks
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Grabau-type classification of Group A (allochemical) rocks
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Akhir Kuliah “Carbonate Rocks”