Characteristics of the Limestone of the Maruni Formation in Warmare Area and Surroundings Manokwari District, West Papua Province

Abstract

This study aims to determine the characteristics of the Maruni Formation limestones in the Warmare area and its surroundings in Manokwari Regency by using geological mapping, and petrographic and paleontological analysis. Based on physical, petrographic and paleontological characteristics, the limestone facies in the study area consist of packstone, wackestone, mudstone and crystalline. Limestone diagenetic processes that occur in the study area are cementation diagenesis and neomorphism. Limestone depositional environment consists of two depositional environments. First, the depositional environment is in a shallow ocean shelf with limited circulation (SMF10: bioclastic packstone/wackestone with worm skeletal grains and SMF18: Grainstone or packstone with abundant foraminifera or algae; FZ7-FZ8; Platform Interior – Openmarine, Restricted). After that, sea ​​level conditions decreased, so that the depositional environment shifted towards the sea (SMF2: Micobioclastic peloidal calcisiltite and SMF3: Pelagic mudstone/wackstone – FZ3: Toe of Slope). However, in the complex classification of facies, the research area is included in the lagoon depositional environment.

Triangulation Method for Limestone Estimation in CV. Atang Village, Jemparing: Insights from Long Ikis, Paser District, East Kalimantan

“…The general types of limestone include chalk limestone, coquina limestone, fossiliferous limestone, lithographic limestone, oolitic limestone and travertine limestone. Several types of limestone have their characteristics [6]. Mining is an area that has the potential to have limestone minerals seen in the regional geological formations included in the Bebulu Formation on the Balikpapan Geological Map Sheet, namely limestone with silt claystone inserts and a little marl [7].…”