Institusion
Universitas Sriwijaya
Author
UMI AKOYAMA (STUDENT ID : 03071181320007)
Budhi Setiawan (LECTURER ID : 0012117205)
Harnani Harnani (LECTURER ID : 0001028404)
Subject
TN400-580 Ore deposits and mining of particular metals
Datestamp
2019-10-02 06:42:55
Abstract :
limestone of the area. The research method was carried out by geological mapping
and analysis of the diagenetic environment through microscopic observations in sample aid
samples. The Wayheling area is divided into three geomorphological units, namely the River
andFloodl Plains (SDA), Steep Slope (PRDC), and the Lower Grounded Slope (PRDL). The
stratigraphy of the study area is divided into three formations which are sorted from young
keas, namely the Baturaja Formation which is ahead of the Early Miocene, the Gumai
Formation which approaches the Middle Miocene, and the Kasai Formation which stands
Pliocene. The geological structure that developed in the study area was in the form of stocky
with Shear Fracture N 69 'E / 13, Gash Fracture N 355' E / 11, and direction of brecciation N
46 'E which showed a fault with the Normal Left Slip Fault type. Besides that, there are also
five folded blades with Horizontal Upright Fold, Steeply Inclined Horizontal Fold, and
Steeply Inclined Horizontal Fold. The structure shows the general direction of the Northwest-
Southeast line which can be used in the order of Tertiary (Neogen) networks. Diagenetic
products Limestone Wayheling area starts from the marine phreatic environment, which is
characterized by microbial micritization and cementation of fibrous forms. Then the funeral
environment marked with stylolite. Processes related to tectonics become mixing zones. After
that, the meteoric phreaticic diagenesis was formed which was characterized by the formation
of semen, then raised into a vadose environment which was marked by the presence of
microcrystaline. The geological history of the study area begins with the formation of the
Baturaja Formation and the Gumai Formation in harmony with the transgression phase at
the time of the early Miocene-Middle Miocene. In the middle-end Miocene the deposition
process was stopped because of the introduction of the regression phase which was carried
out by the erosion process due to the raised part. In the Late Miocene-Pliocene developed