• Geol. 135 Clastic rocks and sediments - Hofstra

    Terrigenous Clastic Sediments and Sedimentary Rocks ... Based primarily on grain size and grain composition. ... Mud - course silt, medium silt, fine silt, clay ... This is because the small size of the particles makes them difficult to identify and...


    Relative Percentages of Sedimentary Rocks. SEDIMENT ... Deposition Clay-sized particle vs. clay mineral ... Fine-grained Matrix; Usually from turbidity currents.

  • Lecture 2 notes

    A) Shales and related fine-grained rocks: - Make up ~50% of the ... Have >50% silt-sized grains. - Usually have abundant clay minerals, clay-sized particles.

  • Extractive Mineral Commodities - Minerals

    Clay, Natural plastic clay deposits deposited as sediment (minerals for ... Fine-grained sedimentary rock composed mainly of clay-sized particles that is easily...

  • GeoMan's Sedimentary Rock Identification Chart

    Particle Size, Composition, Comments, Rock Name ... Fine Grains ... Quartz and clay minerals, Gritty, 1/16-1/256 mm; some grains may be seen with hand lens...

  • Oil and Gas Traps - The Original Petroleum Geology Site!

    The cap rock prevents further oil or gas movement. ... The very fine-grained shale we talked about previously is one of the most common sedimentary rocks on earth. ... a lot of organic material mixed with the clay-sized particles that form shale.

  • shale - Schlumberger Oilfield Glossary

    A fine-grained, fissile, detrital sedimentary rock formed by consolidation of clay- and silt-sized particles into thin, relatively impermeable layers. It is the most...

  • Grain size in clastic sedimentary rocks

    remained behind in the supply area, whereas silt and clay-size particles were ... weak currents permitted fine-grained clay to slowly settle and accumulate over.

  • Glossary of geologic terms | Planetary Science Institute

    Aggregate -- A mass or body of rock particles, mineral grains, or both. ... More specifically, said of a sedimentary particle showing little or no evidence ... 2) An earthy, extremely fine-grained sediment or soft rock composed primarily of clay-size...

  • Knappable Lithics

    Basalt is a fine-grained, silica-poor, igneous rock and is by far the most abundant .... sedimentary rock made up of lithified silica-rich clay and silt-sized particles.


    Sedimentary rocks - rocks formed by the accumulation and consolidation of ... Clastic - particles derived from the breakdown of pre-existing rocks (sedimentary, metamorphic or igneous). ... are quartz, feldspars, iron oxides, clays, calcite and rock fragments. (Low temp. minerals and fine grain size result in greater stability.) 2.

  • Shale Gas Glossary : Shale Gas - Shale Gas Europe

    Shale rock, A group of fine-grained, laminated sedimentary rock types originally formed from silt- and clay-sized particles. Shale rock is the most abundant of the...

  • Sedimentary and metamorphic rocks and age determination

    Kinds of clastic rocks---based primarily on sediment (particle) size ... claystone (a very fine grained rock which feels slick when wet), shale ( a very fine grained...

  • Clay and Shale page - Missouri Department of Natural Resources

    Clay is sediments or rocks with greater than 67 percent clay-size (2 ... To the engineer, the term “clay” is used to describe cohesive particles having ... To a soil scientist, clay is any naturally occurring material composed primarily of fine-grained...

  • 1.4 - Sedimentary Rocks - Plant and Soil Sciences eLibrary

    Sedimentary rocks are classified by their dominant particle size (sand, silt, ... Distinguishing Features, Very fine grained, composed of clay-sized minerals, often...

  • Petrographic and Engineering Properties of Fine-Grained Rocks of ...

    Sand- and silt-size particles . .... Classification of fine-grained sedimentary rocks . . . . . . . . . . . 117 ..... which is composed of predominantly clay-size particles;.

  • Minerals | Extractive Mineral Commodities

    Clay, Natural plastic clay deposits deposited as sediment (minerals for ... Fine-grained sedimentary rock composed mainly of clay-sized particles that is easily...

  • Terms - Iowa State University

    Weathering in which the particle becomes smaller but its chemical ... A fine grained sedimentary rock formed when clay sized particles (usually rich in silicate...

  • Sedimentary Concepts - GeologyClass.org

    Sediments are loose rock particles. ... Sediment Classification by Particle Size ... Shale- A fine-grained sedimentary rock containing silt and clay-sided grains.

  • Sedimentary Review - GeologyClass.org

    Sediments are loose rock particles, produced by one of three mechanisms: ... Clastic sedimentary rocks are classified by grain size, and to a lesser extent by chemical ... Shale- A fine-grained clastic rock containing silt and clay-sided grains.

  • Argillaceous rocks - AccessScience from McGraw-Hill Education

    Clastic sedimentary rocks containing silt- or clay-sized particles that are less than 0.0625 mm ... Loess is a fine-grained, unconsolidated, windblown deposit.

  • What is the role of shale as a source of oil and gas resources in the ...

    Shale is a fine-grained sedimentary rock that forms from the compaction of silt and clay-size mineral particles. Black shale contains organic material that can...

  • capturing key attributes of fine-grained sedimentary rocks in ...

    We propose to name fine-grained sedimentary rocks using a root term based on their texture (grain size), which is .... a clay-mineral-rich fine-grained rock or as a clay-size-dominated fine- grained .... particle size analysis or differential settling).

  • Sedimentary Rocks

    Sedimentary rocks make up only 5% (by volume) of the upper 10 miles of the crust, ... Sorting - degree to which the particles are the same size, i.e. if all the ... very fine-grained siltstones, mudstones, and claystones that are laminated or fissile.

  • map

    WHAT IS A SHALE AND A SHALE PLAY? Shale is a fine-grained sedimentary rock that forms from the compaction of silt and clay- size mineral particles that are...

  • Chapter 3 Sedimentary Rocks - University of South Alabama

    typically brown, yellow-orange or red in color due to the presence of fine particulate material ... The term grain size refers to the average particle size within a sedimentary rock. ... Clay-sized sediment can be composed of quartz, feldspar, mica.

  • PA DCNR - Geology - Rock Types

    The naming of sedimentary rocks is based mostly on grain size (clastic) ... the minerals (coarse enough to be seen with the naked eye, or too fine to be seen). ... Mixture of sandstone, siltstone, shale, claystone, limestone, and coal. ... Claystone - A sedimentary rock in which more than 50 percent of the particles are less than...

  • EL 12, Clay and shale in Ohio - Ohio Geological Survey

    micas found in metamorphic and igneous rocks. ... Shale is a fine-grained, thinly laminated sedimentary ... of organic material, and silt-sized particles of quartz,.

  • Clam Beds Hike Lesson Plan - National Park Service

    Sedimentary rocks are formed from sediment, or small particles (clay, silt, sand, gravel) .... fine grained sedimentary rock composed of silt and clay sized particles...

  • 1162 Geo T Guide.pdf - TMW Media Group

    Clay will settle out of water to form what? a) Chalk ... Shale- A fine-grained Sedimentary rock composed of clay-sized and silt-sized particles of unspecified min-.