Results 321 to 330 of about 871,982 (402)

Sediments and Sedimentary Rocks

2018
We are on more familiar ground in this chapter, looking at processes and materials found in the world all around us. Even the names of sedimentary rocks are well known—sandstone, shale, limestone, and so on. Clearly, these materials are highly relevant to vineyard geology because more than three-quarters of the land surface is sedimentary in origin ...
openaire   +1 more source

The sedimentary rocks of macaronesia

Geologische Rundschau, 1974
In all the archipelagos forming Macaronesia, volcanis predominate, but pre-Quaternary sediments are also present, though playing a humble role. Calcareous deposits have by far the greatest significance throughout the known stratigraphic record. Tertiary occurrences tend to be thin, show more gentle dips, whereas the Mesozoics attain thicknesses of 400 ...
openaire   +2 more sources

Sedimentary Rocks of Early Mars

Science, 2000
Layered and massive outcrops on Mars, some as thick as 4 kilometers, display the geomorphic attributes and stratigraphic relations of sedimentary rock. Repeated beds in some locations imply a dynamic depositional environment during early martian history.
Kenneth S. Edgett, Michael C. Malin
openaire   +3 more sources

Sediments and Sedimentary Rocks

2020
Thus sediments are products of mechanical and/or chemical weathering and they are transported by different media and over variable distances to a site of deposition, be it marine or terrestrial. Transport can be achieved simply by gravity, leading to bulk downward transfer of rock masses such as in the case of landslides or mountain creeps.
Hartwig E. Frimmel, Martin Okrusch
openaire   +2 more sources

Sedimentary Rocks

Rocks and Rock Formations, 2019
1. Sediments and Methods of Their Study 2. Erosional Processes 2.1. Weathering 2.2. Transport 3. Depositional Processes and Sediment Types 3.1. Features of Detrital Sediments 3.2. Bedforms and Sedimentary Structures 3.3. Trace Fossils 3.4.
PhD. John J. Renton, Jr Thomas E. Repine, Michele Adams, Berkeley County Schools, Angela McKeen, Dr. Deb Hemler, Tom Repine West, Virginia Geological   +7 more
semanticscholar   +1 more source

Sedimentary Rock Types

Nature, 1961
Microscopic Sedimentary Petrography By Prof. Albert V. Carozzi Pp. viii + 485. (New York: John Wiley and Sons, Inc.; London: Chapman and Hall, Ltd., 1960.) 92s. net.
openaire   +2 more sources

Sedimentary Rocks—Descriptive

1978
The factor of grade size is the one most used for the classification of sedimentary rocks (p. 190). Four groups may be distinguished:— 1. Rudaceous 1—Rocks consisting chiefly of gravel, pebbles, cobbles, or boulders. Loose materials of this class are gravels, pebble-beds, shingle, boulder-beds, scree, talus, etc.
openaire   +2 more sources

Nomenclature for Sedimentary Rocks

AAPG Bulletin, 1970
Despite the many excellent papers on classification of sedimentary rocks, there is still so much loose and variable usage of names that it is not possible to be certain of--or in some cases even to guess at--the intended meanings of terms found in the literature.
openaire   +2 more sources

Petrology of the Sedimentary Rocks

1988
Soils: soil-forming processes soil classification modern and ancient soil types. Sedimentary structures: bedding ripples, dunes and cross-bedding turbidites, graded beds and sole structures deformational structures biogenic structures. Rudaceous deposits: classification composition of pebbles shape and roundness of pebbles sedentary rudaceous deposits ...
openaire   +2 more sources

Microstructures of sedimentary rocks

2004
Introduction Although this book is mainly concerned with igneous, metamorphic and deformation processes, in this chapter I briefly review the main sedimentary microstructures, partly because they need to be understood in order to interpret residual sedimentary microstructures in some metamorphic rocks.
openaire   +2 more sources