Sentence examples for strata of sediment from inspiring English sources

The strata of sediment preserved in the core reached back 1,100 years.

They fall into two main groups: the extraction of certain strata of sediment, and the extraction of fluids from pores, leaving the strata intact.

The following previously published datasets were used: Smith O, Momber G, Bates R, Garwood P, Fitch S, Pallen M, Gaffney V, Allaby RG, 2015, Shotgun metagenomic study of sedimentary ancient DNA (sedaDNA), from four strata of sediment core taken from an Bouldner Cliff, a submarine archaeological site in the Solent.

But further research has established that the graves lie in a lower stratum of sediment, and thus probably were dug sometime during the first dynasty, which extended from about 3000 B.C. to 2800.

There's layer upon layer of sediment on top".

Some Great Lake coastal marshes exhibit 1 2 m of organic-rich sediment layers (or peat) found between strata of mineral sediments, indicative of high energy environments [22, 43].

Dr. Brooks said the new research had produced "unquestionable evidence" that the artifacts were found in the layer of sediment in which they originated; they had not migrated there, through erosion or the action of burrowing animals, from higher and more recent strata.

Within each stratum, benthic grab samples were collected from ten random sites for analysis of sediment composition and contaminants and macrobenthic assemblages.

Most of the strata in the flat valleys and basins of the watershed are underlain by thousands of feet of sediment deposited by transient seas during climate changes and by erosion.

They also used radiocarbon dating and other techniques to determine the ages of different strata within the sediment core.

But runoff is not the only source of sediment.