presentasi pit iagi semarang asmoro
DESCRIPTION
Analisis Geomorfologi Teras Sungai Klawing dalam Kaitannya dengan PotensiArkeo-Geologi, Kabupaten Purbalinggga, Jawa TengahTRANSCRIPT
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Analisis Geomorfologi Teras Sungai Klawing dalam Kaitannya dengan Potensi
Arkeo-Geologi, Kabupaten Purbalinggga, Jawa Tengah
Asmoro Widagdo*, Budi Brahmantyo**, Rachmad Setijadi*
•Staf pengajar Program Studi Teknik Gelogi Universitas Jenderal Soedirman, Purwokerto
**Staf Pengajar di Kelompok Keilmuan Geologi Terapan, FITB, ITB,Bandung
The 38th IAGI Annual Convention and ExhibitionSemarang, 13 – 14 October 2009
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KALI KLAWING
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PendahuluanSungai KlawingBerkembang morfologi
undak sungai yang merupakan hasil dari proses perkembangan tektonik dan sedimentasi
Ditemukan artefak hasil dari kebudayaan manusia prasejarah
Memanfaatkan potensi batuan yang ada di sekitar Sungai Klawing
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F. Halang
F. Kumbang
F. Rambatan
F. Tapak
Geologi Regional
Stratigrafi Formasi Rambatan, Intrusi Diorit dan
Mikrodiorit Miosen, Formasi Halang, Formasi Kumbang, Formasi Tapak, dan Batuan Lava Gunung Slamet berumur
Kuarter
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Geomorfologi Daerah Penelitian
Pegunungan Lipatan Gunung Plana
Dataran Aluvial Bobotsari
Pegunungan Lipatan Gunung Plana, Perbukitan Homoklin Bobotsari, Kaki Gunungapi Slamet dan Dataran Aluvial Bobotsari
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Peta Geomorfologi daerah Penelitian
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Peta Geologi daerah Penelitian
Stratigrafi Daerah Penelitian
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Undak 1
Undak 1Undak 2&3
Undak 2&3Kipas AluvialBreksi F.Kumbang
Undak Sungai dan Kehadiran ArtefakUndak 1Undak 2Undak 3
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Development of stream terraces
Image courtesy of Long, 2002
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Stream Terrace Model
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Sedimentary Environments
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Endapan aluvial di tepi Sungai Klawing yang tersusun atas lapisan pasir, lempung, dan lapisan sedimen lepas berukuran pasir - kerakal. Endapan ini merupakan Undak 2.
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Satuan Batulempung F.Tapak
Bidang Perlapisan
Bidang erosi
Endapan Undak 2
Sungai Klawing
Endapan Undak 2 yang berada jauh diatas muka aliran Sungai Klawing serta tertorehnya batuan dasar menunjukkan proses erosional Sungai yang kuat.
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Alluvial Fan Deposits - Baja, CACoarse channel deposit (conglomerate)
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Fluvial Environments
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Peta Sebaran Undak
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a. b.
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Kesimpulan
Daerah di sekitar Sungai Klawing di daerah penelitian terdiri atas 3 buah undak sungai, yaitu Undak 1, Undak 2 dan Undak 3.
Artefak manusia prasejarah dijumpai pada tiap-tiap perkembangan undak baik undak 1, undak 2 maupun undak 3.
Sumber artefak, terutama batu jasper yang digunakan oleh manusia prasejarah berasal dari bagian kelompok batuan Endapan Kipas Aluvial dan Endapan Aluvial di sekitar Sungai Klawing.
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Sekian & Terimakasih
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Yang terkenal dari PurwokertoGunung slamet, tertinggi di jawa tengahTertinggi 2 di Jawa setelah Semeru
Getuk Goreng Sokaraja
Tempe mendoan/1/2 matang
keong
Mayang sari