Results 81 to 90 of about 25,161 (234)
Sedimentology, EarlyView.ABSTRACT This study investigated the formation mechanism responsible for anomalously high permeability (AHP) observed in the Eocene sandstones at depths from 3824 to 3832 m in the Huizhou Sag, Pearl River Mouth Basin, China, using helium porosity and permeability measurements, thin section, scanning electron microscopy, electron probe X‐ray ...
Changgui Xu +12 more
wiley +1 more source
Bone Diagenesis and Extremes of Preservation in Forensic Science
HumansUnderstanding the composition and diagenetic processes of the deposition environment is pivotal to understanding why bone undergoes preservation or diagenesis.
Rhys Williams +3 more
doaj +1 more source
Sedimentology, EarlyView.ABSTRACT Although the global expansion of oxygen‐depleted marine environments during the Early Toarcian Jenkyns Event (or Toarcian Oceanic Anoxic Event) is primarily inferred from successions in the NW European epicontinental basins, the timing of the expansion of anoxia in Tethyan basins, where hydrography potentially played a minor role, is poorly ...
Tamás Müller +6 more
wiley +1 more source
Survey of the diagenesis process and effect these process on reservoir quality of the Kangan formation in South Pars Field [PDF]
, 2009 Kangan and Upper Dalan formations are forming reservoir sequence of the South Pars field. Litology of the kangan formation is carbonate and (limestone and dolomite with anhydrite intervals), so digenetic processes were very active in this formation and ...
Masoud Asgharian Rostami +3 more
core
Terra Nova, EarlyView.ABSTRACT Thin, discontinuous, organic‐rich oil shale beds in the siliciclastic‐evaporitic Salt Range Formation (SRF) of Pakistan are of approximate Neoproterozoic to Cambrian age based on stratigraphic constraints. The beds are enriched (26–43 wt.% total organic carbon, TOC) in aliphatic organic matter (OM) of low thermal maturity despite their ...
Paul C. Hackley +4 more
wiley +1 more source
Crystallography and diagenesis in fossil craniid brachiopods
, 2007 One of the fundamental questions in biomineralization is how organisms control crystallographic orientation during biomineral production. The understanding of how diagenetic changes influence the preservation of original crystallographic patterns in ...
England, J +5 more
core +1 more source
Red to Green: A Lipid Biomarker Record of Tonian-Ediacaran Algae in Siberia. [PDF]
GeobiologyABSTRACT Multiple lines of evidence point to a major diversification of Eukarya in the late Tonian period, ca. 800–720 Ma ago. Regular steranes, lipid biomarkers primarily sourced from eukaryotes, are first unambiguously reported from multiple sites. Here, we present lipid biomarker stratigraphic records from two drill‐cores from the Lena‐Anabar Basin ...
Rizzo AI +7 more
europepmc +2 more sources
Deposition and Diagenesis of Subtropical Microbial Carbonates [PDF]
, 2017 The primary objective of this dissertation is to characterize freshwater microbial palustrine deposits, and assess how their textures and geochemical characteristics change over various stages of early burial and diagenesis in order to assess their ...
Pederson, Chelsea
core +2 more sources
Diagenesis of jurassic tuwaiq mountain limestone, central Saudi Arabia
, 2006 Geology Department, College of Science, King Saud University, Riyadh, Saudi ArabiaOutcrops of the Jurassic Tuwaiq Mountain Limestone in central Saudi Arabia was diagenitically studied in detail.
Dabbagh, M.E.
core
Early diagenetic vivianite [Fe-3(PO4)(2) center dot 8H(2)O] in a contaminated freshwater sediment and insights into zinc uptake: a mu-EXAFS, mu-XANES and Raman study [PDF]
, 2008 The sediments in the Salford Quays, a heavily-modified urban water body, contain high levels of organic matter, Fe, Zn and nutrients as a result of past contaminant inputs.
Bennett, Andrew J. +6 more
core +1 more source