Diagenetic origin of quartz silt in mudstones and implications for silica cycling

  title={Diagenetic origin of quartz silt in mudstones and implications for silica cycling},
  author={J{\"u}rgen Schieber and David h. Krinsley and Lee R. Riciputi},
Mudstone—the most abundant sedimentary rock type, composed primarily of clay- or silt-sized particles—contains most of the quartz found in sedimentary rocks. These quartz grains, which are chemically and mechanically resistant and therefore preserve their characteristics well, have long been considered to be derived from the continental crust. Here we analyse quartz silt from black shales in the eastern USA, dating back to the Late Devonian period (about 370 million years ago), using… 

Diagenetic alterations in a silt- and clayrich mudstone succession: an example from the Upper Cretaceous Mancos Shale of Utah, USA

Abstract An understanding of the nature and scales of diagenetic variability within organicrich mudstones is critical to the accurate assessment of shale-gas reservoir properties, as well as for



Cathodoluminescent textures and the origin of quartz silt in Oligocene mudrocks, South Texas

ABSTRACT In subsurface mudrocks of the Oligocene Frio Formation in South Texas, a substantial proportion of silt-size quartz (10-62 µm) manifests cathodoluminescence (CL) that varies greatly in

Early Diagenetic Silica Deposition in Algal Cysts and Spores: A Source of Sand in Black Shales?

ABSTRACT Devonian black shales deposited on the North American craton contain abundant Tasmanites cysts. Although these are typically flattened because of compaction, a small proportion are filled

Oxygen Isotopes and the Origin of Quartz: PERSPECTIVE

ABSTRACT Published data indicate that in igneous rocks the 18O of quartz averages about +9; in metamorphic rocks, +13 to +14; in sandstones, +11; in shales, +19; quartz overgrowths in sandstones,

Perspectives; Oxygen isotopes and the origin of quartz

Published data indicate that in igneous rocks the delta 18 O of quartz averages about +9 per thousand ; in metamorphic rocks, +13 to +14 per thousand ; in sandstones, +11 per thousand ; in shales,

Secular change in chert distribution: a reflection of evolving biological participation in the silica cycle.

In the modern oceans, the removal of dissolved silica from sea water is principally a biological process carried out by diatoms, with lesser contributions from radiolaria, silicoflagellates, and

Eolian-derived siltstone in the Upper Permian Phosphoria Formation: Implications for marine upwelling

Previously described organic-rich shale facies of the Meade Peak Member of the Phosphoria Formation at Soda Springs, Idaho, consist of well-sorted, laminated siltstone containing little or no clay.

Detrital Quartz as an Indicator of Distance from Shore in Marine Mudrocks

ABSTRACT Eighty-nine surface samples and 17 subsurface samples of shale from the Blaine Formation (Permian) in western Oklahoma were examined to determine the variation in percentage of quartz and

Provenance Studies and Mudrocks

ABSTRACT Provenance studies based on the mineralogy of sandstones seem to be falling rapidly into disrepute as a result of the increasing emphasis on the effects of diagenesis on the original

Origin of the quartz in Antrim Shale

Study of the macroscopic and microscopic properties of the Antrim Shale indicated an important anomaly, the quartz. The Antrim Shale (Devonian, Michigan Basin) contains a large, but quantitatively

Distribution and deposition of mudstone facies in the Upper Devonian Sonyea Group of New York

ABSTRACT Petrographic and small-scale sedimentary features of the mudstone-dominated Upper Devonian Sonyea Group of New York were examined in order to (1) improve our understanding of mudstone