Sentence examples for geologic deposits from inspiring English sources

Moreover, geologic deposits are an unknown.

2) The vast majority of our phosphorus supply comes from phosphate rock, mined from geologic deposits.

3) Those geologic deposits are concentrated in just 5 countries, and Morocco alone controls 75% of known reserves.

Even more important in the assignment of these fossils to Homo may be the occurrence in the same geologic deposits of very primitive stone tools.

The more humanlike specimens, for example, could have come from younger geologic deposits and from a more advanced species than the one represented by the more primitive fossils.

A minimum age of 200 million years was obtained from geologic deposits that filled in the Woodleigh crater and a maximum age of 280 million from fossils at its base.

Fossil strata are separated by sharp boundaries; accumulation of fossils within a geologic deposit (stratum) is fairly constant over time, but the transition from one stratum to another may involve gaps of tens of thousands of years.

Higher FTHg concentrations in 24 m deep well samples than in deep well samples at 6 m (SI Table 1) and the lack of geologic Hg deposits in shallow soil/sediment in the reach are consistent with atmospheric Hg deposition on the terrestrial landscape as the distal source of FTHg to groundwater.

iAs in those sources tends to originate from naturally occurring geologic arsenic deposits (Welch et al. 2000) or environmental contamination from heavy industry or historic pesticide use (Meharg and Hartley-Whitaker 2002).

In 2001, Dr. Luann Becker, then a visiting professor at the University of Washington, reported finding extraterrestrial gases in the geologic layer deposited 250 million years ago.

High dissolved-solids loading to the River and tributaries are derived primarily from geologic material deposited in inland seas in the mid-to-late Cretaceous Period, but this loading may be increased by human activities.