Journal ArticleDOI
The size distribution of framboidal pyrite in modern sediments : an indicator of redox conditions
TLDR
In this paper, a survey was made of framboid size distributions in recently deposited sediments from euxinic (Black Sea; Framvaren Fjord, Norway; Pettaquamscutt River Estuary, Rhode Island, USA), dysoxic (Peru Margin), and oxic (Wallops Island, Virginia, USA; Great Salt Marsh, Delaware, USA) environments.About:
This article is published in Geochimica et Cosmochimica Acta.The article was published on 1996-10-01. It has received 912 citations till now. The article focuses on the topics: Framboid & Diagenesis.read more
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Trace metals as paleoredox and paleoproductivity proxies: An update
TL;DR: In this paper, a synthesis of the use of selected trace elements as proxies for reconstruction of paleoproductivity and paleoredox conditions is presented, and the combined used of U, V and Mo enrichments may allow suboxic environments to be distinguished from anoxic-euxinic ones.
Journal ArticleDOI
Spectrum of pore types and networks in mudrocks and a descriptive classification for matrix-related mudrock pores
TL;DR: In this paper, a pore classification consisting of three major matrix-related pore types is presented that can be used to quantify matrix related pore and relate them to pore networks.
Journal ArticleDOI
Geochemistry of oceanic anoxic events
TL;DR: In the case of the Cenomanian-Turonian and early Aptian OAEs, a longer-term trend to less radiogenic values was observed as discussed by the authors.
Journal ArticleDOI
Mississippian Barnett Shale: Lithofacies and depositional setting of a deep-water shale-gas succession in the Fort Worth Basin, Texas
TL;DR: The Barnett Formation of the Fort Worth Basin is a classic shale-gas system in which the rock is the source, reservoir, and seal as mentioned in this paper, and three general lithofacies are recognized on the basis of mineralogy, fabric, biota, and texture: laminated siliceous mudstone; laminated argillaceous lime mudstone (marl); and skeletal, argillized lime packstone.
Journal ArticleDOI
Formation processes of framboidal pyrite
Richard T. Wilkin,H.L. Barnes +1 more
TL;DR: In this article, the stability of colloidal, iron monosulfide suspensions with ionic strengths typical of marine and lacustrine waters was evaluated using DLVO theory and a term was included to account for the ferrimagnetic properties of greigite.
References
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Book
Statistics and data analysis in geology
TL;DR: In this article, a thoroughly revised edition presents important methods in the quantitative analysis of geologic data, such as probability, nonparametric statistics, and Fourier analysis, as well as data analysis methods such as the semivariogram and the process of kriging.
Journal ArticleDOI
Sedimentary pyrite formation: An update
TL;DR: In this article, it was shown that organic matter appears to be the major control on pyrite formation in normal (non-euxinic) terrigenous marine sediments where dissolved sulfate and iron minerals are abundant.
Journal ArticleDOI
Comparison of geochemical indices used for the interpretation of palaeoredox conditions in ancient mudstones
B Jones,David A. C. Manning +1 more
TL;DR: In this article, eight geochemical indices used for the interpretation of bottom water palaeo-oxygen concentrations for argillaceous sedimentary rocks have been calculated for a suite of Upper Jurassic mudstones drawn from the Draupne and Heather Formations of the Norwegian North Sea, and the Kimmeridge Clay Formation from onshore England.