#TITLE_ALTERNATIVE#

• Main Author: ADITIYO (NIM 12006046), REZKY
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/13778
• Institution: Institut Teknologi Bandung

Stratigraphy unit consists of four stratigraphy units. Tawun Formation claystone Unit was deposited on the late of Early Miocene. Ngrayong sand Unit was lying on it, deposited conformably on the early of Middle Miocene. Then on the late of Middle Miocene until the early of Late Miocene, Bulu Formation limestone Unit was deposited unconformably on middle neritic until outer neritic environment. Wonocolo Formation Marl Unit, then deposited on the Late Miocene. Geological structure found were anticline and strike slip fault, had been developed by N-S tectonic force since Pliocene until Pleistocene with a NW–SE and NE-SW trend. Uplift and erosional process then created morphology just like now. The geomorphology unit comprises Anticline Hill Unit, Hogback Ridge Unit, and Homocline Valley Unit. Ngrayong Sand consists of quartz sandstone, claystone, and also limestone, divided by three parts, there are: Lower Ngrayong Sand, Middle Ngrayong Sand, and Upper Ngrayong Sand. Grain size indicating shallow marine facies (surfzone-offshore), paleontology analysis shows that deep water fossils and shallow marine fossils were mixed together, and also cruziana trace fossil. Microcline were found in petrography analysis in quartz sand. Based on facies association, Ngrayong Sand in Candi Area was being interpreted as shallow marine deposition in litoral to inner neritic zone.and sedimentational pattern analysis show Ngrayong Formation on Candi area obviously was deposited on littoral until inner neritic zone. Deep marine fossils that were mixed in shallow marine association were interpreted as reworked fossils that came from Tuban Formation below Tawun and Ngrayong Formation.