Tonglu rhythmites (Upper Ordovician) in Zhejiang Province, east-central China, display three orders of cyclicity in sandstone and mudstone layer thickness. Millimeter-thick alternations of sandstone and mudstone laminae are ascribed to single tidal cycles. Centimeter-thick alternations of sand-dominated layers (SDLs) and muddominated layers (MDLs) are interpreted to be related to alternation of...

Diagenetic models for silt-rich mudstone (siltstone) are less advanced than those sandstone and clay-rich mudstone. In addition, the influences of diagenetic processes on reservoir quality in siltstone formations poorly understood. Here we examine roles depositional facies, detrital composition, compositional evolution Lower Triassic Montney Formation, a prominent siltstone-dominated western Ca...

Uplift and erosion are complex phenomena in terms of their governing processes, precise timing exact magnitude. The intricate relationship between different geodynamic processes leading to uplift may increase uncertainties estimating spatial temporal patterns. Sediment distribution from uplifted (and eroded) topography the corresponding paleoenvironmental reconstructions require reliable constr...

The enrichment law of tight sandstone gas in the Upper Triassic Xujiahe Formation Sichuan Basin has not been fully revealed. In this study, controlling effect source-reservoir assemblage on accumulation was systematically investigated. results show that pores and fractures are developed reservoirs Formation. main pore types intragranular dissolved intergranular pores. quality is controlled by s...

Gale Crater, the Mars Science Laboratory (MSL) landing site, contains a central mound, named Aeolis Mons (informally Mount Sharp) that preserves 5 km of sedimentary stratigraphy. Formation scenarios include (1) complete filling of Gale Crater followed by partial sediment removal or (2) building of a central deposit with morphology controlled by slope winds and only incomplete sedimentary fill. ...

The material properties of sedimentary rocks are controlled by a range of parameters, including grain size, sorting, and modification of the original sediment through the diagenetic processes of compaction and cementation. To isolate the effects of diagenesis, and explore how they modify permeability, we quantified changes in grain and pore morphology accompanying progressive diagenesis of a si...

Tidal sandstone reservoirs contain significant intervals of hydrocarbonbearing heterolithic facies, characterized by the presence of tidegenerated sedimentary structures such as flaser, wavy, and lenticular bedding (millimeter to centimeter sand-mud alternations). We have characterized the reservoir properties (sandstone connectivity, effective permeability, and displacement efficiency) of thes...

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...

Mesozoic strata in the Cowhole Mountains, eastern Mojave block California, include 200–800 m of eolian quartz arenite (Aztec Sandstone) overlain by more than 575 m of silicic ignimbrites, lava flows, and minor sedimentary rocks (Cowhole volcanics). U-Pb zircon geochronologic data on a crystal-rich dacite lava flow in the Aztec Sandstone indicate that the sandstone is Middle Jurassic and is ther...

We report on an investigation concerning the utilization of morphological information obtained from a two-dimensional ~2D! slice ~thin section! of a random medium to reconstruct the full three-dimensional ~3D! medium. We apply a procedure that we developed in an earlier paper that incorporates any set of statistical correlation functions to reconstruct a Fontainebleau sandstone in three dimensi...