Open AccessPALEONTOLOGICAL ASSESSMENT OF MALAWA FORMATION, PADANGLAMPE, BARRU REGENCY, SOUTH SULAWESI
Author(s) -
Siti Nurkhalidah Husainy,
Nursufiah Sulaiman,
Rohani Ismail,
Norela Sulaiman,
Rohaya Langkoke,
Meutia Farida
Publication year - 2020
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/596/1/012051
Subject(s) - geology , sedimentary depositional environment , paleontology , lithology , structural basin
The study area is located at Padanglampe, Barru Regency, South Sulawesi, Indonesia. The objectives of this study are to identify the fossils occurrence and interpret the depositional environment together with age identification based on the fossils occurrence. There are four lithology units found in this study area; volcanic breccias, limestone, sandstone, and intrusion of andesite and trachyte unit. Most of the fossils are found in sandstones unit within the interbedded of limestone, coal, and claystone. The fossils had been soaked with hydrogen peroxide (H2O2) for a night to disaggregate fossils from rocks. Seven species found from the phylum mollusks, which are Cerithium salebrosum Sowerby, Cerithium tuberculatum, Cerithium zonatum, Oliva junghuhni, Vicarya sp., Septifer sp. and Ostrea sp., while two species from Cnidaria phylum; Cycloseris sp. and Discocyathus sp. Based on these fossils identification, the age of the study area was ranged from early Triassic to Middle Neogene, and the depositional environment of the study area was interpreted as a shallow subtidal environment with a restricted area of lacustrine or lagoon.