sedimentary rocks造句怎么写

formation of sedimentary rocks: weathering, erosion, transportation, deposition and diagenesis.

The ultrabasic rocks form a complex of large tectonic slices with intercalated slices of Sebakwian sedimentary rocks.

Stocks, dykes etc. can be placed in simple sequence with the sedimentary rocks.

The volcanic rocks associated with the terrigenous elastic rocks and intrabasinal sedimentary rocks predominate in the Devonian strata in the Ashele and Chonghur regions, Xinjiang.

The results indicate that there mainly develop a set of shallow Marine shelf clastic sedimentary rocks and platform carbonate rocks during the Sinian-Lower Paleozoic (Lower Assemblage) period.

Many sedimentary rocks contain clay minerals and 76% of forming-rock minerals of slope rocks can produce clay minerals during the weathering processes.

Because they are porous, sedimentary rocks, such as sandstones and conglomerates, are important potential sources of groundwater.

Discussion on Proterozoic K- and REE-rich sedimentary rocks in North China as ore source of Bayan Obo rare earth deposits

The weathered and eroded residue of any family of rock can be observed today being transported to the sea for deposition and conversion into sedimentary rocks.

In this process, sedimentary rocks that originally formed on the seabed may be folded upwards to altitudes of more than 26,000 feet.

as a matter of fact, more than seventy-five percent of the rocks exposed on the earth's surface consist of sedimentary rocks, such as sandstone, clay, shale and limestone, so it is not surprising we often see sedimentary rock on the earth's surface.

as the years pass and layer on layer of rock fragments pile up, they are squeezed or compacted by the weight of the materials on top of them. Then sediments may be cemented together, forming the sedimentary rocks.

Sediments are subsequently transported or dropped by such geological agents as water, wind and ice. In this way, sediments can be deposited in layers, one on top of the other. These layers or beds which are known as strata are the most distinctive features of sedimentary rocks.

sedimentary rocks,eg sandstone,limestone,slate

Pyroclastic rocks are a kind of transitional and complex rocks between lavas and sedimentary rocks.

Loose sediments can turn into hard sedimentary rocks.

A sedimentary basin is an area of the earth's crust that is underlain by a thick sequence of sedimentary rocks.

Low-lying areas tend to be formed of granite or sedimentary rocks.

Of the three great classes of rocks, igneous rock constitutes most of the earth's crust though their great volume are extensively covered by sedimentary rocks.

Metamorphic basement of the jiangnan Proterozoic Paleo-island arc mainly consists of low-grade metamorphic volcanic sedimentary rocks.

Although most fossils are found in marine sedimentary rocks, they also are found in terrestrial deposits left by streams and lakes.

among these mineral fuels, coal is a solid brownish-black to black combustible rock that forms in beds from a few centimeters to many meters in thickness and is interbedded with shales, sandstones and other sedimentary rocks.

These folded rocks look like sedimentary rocks.

Formed from matter deposited by water, as certain sedimentary rocks.

In softer sedimentary rocks, the intact material may be relatively weak.

The gold mineralization is controlled by lower carboniferous volcanic and pyroclastic sedimentary rocks, regional faults and secondary structure.

The majority of fossils are found on Marine sedimentary rocks. Most of these rocks were formed in shallow seas where the life was abundant and where remains were rather quickly buried.

The sedimentary rocks did not dome.

Their original rocks are volcanic rocks, epicontinental clastic sedimentary rocks, and ophiolite of volcanic and island arc tholeiitic series or calcium alkali series.

In some places gas and oil of marine origin too. They are sedimentary rocks, rocks which were laid down by the action of water on the bed of the ocean. Almost always the remains of shells, and other proofs of sea life, are found close to the oil.

Nor is there evidence for metamorphic minerals such as slate or marble, produced when volcanic or sedimentary rocks are subjected to high pressure or temperature.

The sedimentary rocks are graywacke, siltstone, tuff andpellitie, etc.