Studi yang dilakukan di daerah Desa Wakorumba, Kecamatan Wakorumba Selatan, Kabupaten Muna, Provinsi Sulawesi Tenggara, terletak koordinat 04º 58' 20'' - 55' 0'' LS dan 122º 50' -122º 52' BT. Tujuan studi mendasarkan pada analisis petrografi adalah untuk mengetahui jenis batugamping tipe diagenesis terjadi Formasi Wapulaka, Sampolakosa, Anggota Batugamping Tondo. Berdasarkan kenampakan fisik...

An integrated study based on field observation, petrography, and scanning electron microscopy (SEM) the Early–Middle Eocene carbonate rocks has been carried out, which were deposited in Ceno-Tethys Ocean. The area of Yadgaar Section lies eastern margin Upper Indus Basin, Pakistan. Margalla Hill Limestone Chorgali Formation act as reservoir other parts basin are also present Section. lack compre...

The perforated Pediastrum Meyen s.l. species are recorded for the first time in basal levels of Tithonian Vaca Muerta Formation, extending its stratigraphical record to ages as old Late Jurassic times. Based on ecological requirements simplex var. clathratum and P. biwaense, previously warm paleoclimatic conditions suggested by Neuquén Basin, reinforced. co-occurrence different mechanisms that ...

Abstract. Recent U–Pb dating by laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) has demonstrated that reasonable precision (3 %–10 %, 2σ) can be achieved for high-resolution of texturally distinct calcite phases. Absolute dolomite, which biostratigraphy and traditional techniques are very limited, remains challenging, although it may resolve many fundamental questions re...

The evaluation of bone diagenetic phenomena in archaeological timescales is well established, but little known about the extent diagenesis short forensic timescales. In particular, use Oxford Histological Index (OHI) has become synonymous with assessing bioerosion samples, it may not be ideal for on samples shorter, post-depositional Here, we present a novel method quantifying occurring periods...

Introduction: Recent orbital and landed exploration has painted a complex geochemical picture of the earliest martian surface. It is clear that that water was at times present on early Mars, but it is the chemistry and persistence of that water that influences habitabil-ity [1]. Chemically benign conditions appear to surround carbonate and clay-bearing assemblages, while saline minerals reflect...

ABSTRACT Previously published anomalous whole-rock stable isotopic values from the Poison Strip Sandstone Member of Cretaceous Cedar Mountain Formation (CMF) eastern Utah are uncertain origins. This study investigated diagenetic history and processes responsible for these data. Accordingly, we integrated photomicroscopic techniques including polarized light microscopy, epifluorescence cathodolu...

A sediment model has been developed to simulate the Sediment Oxygen Demand (SOD) and sediment nutrient fluxes after a sudden input of Particulate Organic Matter (POM). Compared with previous sediment models, the main model advancements are the use of a continuous function to represent the kinetics of POM diagenesis and inclusion of the biomass content in POM diagenesis. Laboratory experiments a...

Evidencing ancient interspecific associations in the fossil record may be challenging, particularly when bacterial organisms have most likely been degraded during diagenesis. Yet, documenting ancient interspecific associations may provide valuable insights into paleoenvironmental conditions and paleocommunities. Here, we report the multiscale characterization of contemporary and fossilized calc...

Diagenesis in the Permo-Triassic New Red Sandstone, Isle of Arran is characterized by early cementation hematite, clay, and calcite minerals, followed burial compaction, quartz, feldspar, pyrite cementation. Cataclasis post-dated quartz feldspar reduced grain pore aperture size deformed samples. Samples with cataclastic bands typically have 18% porosity 8.81 mD permeability on average. Whereas,...