#TITLE_ALTERNATIVE#

• Main Author: KHURNIAWAN (NIM : 120 11 029); Pembimbing : Prof. Dr. Ir. Yahdi Zaim; Dr. Aswan ST, MT, SUKIATO
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/20553
• Institution: Institut Teknologi Bandung

A geological mapping has been conducted in Semedo area and surroundings, Tegal Regency, Central Java. This research is located on 306000 mT, 9232000 mU to 313000 mT, 9224500 mU (UTM coordinate, WGS84) and comprised an <br /> <br /> <br /> area of 52.5 km2. The morphology of this research area dominantly consists of undulated hills, valley, and an isolated hill. This variations on morphology could be classified into five geomorphologic units, which are Semedo-Karangmalang Plunging Anticline Unit, Tugel-Wungkal Folds Hills Unit, Karangsari Folds Valley Unit, Gajah Mt. <br /> <br /> <br /> Isolated Hill Unit, and Alluvial Plain Unit. Rivers in the research area flow in either trellis, dendritic, and radial pattern. The area is geomorphically entering <br /> <br /> <br /> young to old stage. <br /> <br /> <br /> <br /> The stratigraphy of the research area conists of Sandstone-Claystone Unit, which was dated to Middle-Upper Miocene and deposited in turbidite mechanism. It was overlayed uncomformably by Limestone Unit deposited during Lower Pliocene. <br /> <br /> <br /> These two units were then intruded by Andesite Unit. During Lower to Middle Miocene the Claystone Unit was deposited comformably above Limestone Unit. It was then overlayed uncomformably by Conglomerate Unit which was dated to Lower-Middle Pleistocene by its numerous content of vertebrate fossils. At last, Alluvial Deposit Unit was deposited uncomformably above Conglomerat Unit and covered the previously deposited units in the uppermost north side of the research area. <br /> <br /> <br /> The geological structures that had delevoped in the research area consist of three anticlines, one sincline, and two reverse faults having E-W orientation, a dextral <br /> <br /> <br /> strike-slip fault with NW-SE orientation, and two sinistral strike-slip faults with NE-SW orientation. All of these structures are predicted to had been formed <br /> <br /> <br /> respectively during Plio-Pleistocene tectonic events and probably reactivated during late Middle Pleistocene tectonic. <br /> <br /> <br /> Vertebrate fossils found in this research area are located in Conglomerate Unit and have rich taxonomic variations. Among them were land vertebrates from <br /> <br /> <br /> Elephantoidae, Stegogonidae, Bovidae, Cervidae, Suidae, Felicidae, Hyaenatidae, Hippoppotamidae, Rhinocerotidae and Hominidae families. Water vertebratesfound around research area were sharks and turtles. Vertebrate fossils association of this area could be correlated with Satir to Kedung Brubus faunas in Javanese vertebrate biostratigraphy.