The minerals of veins are therefore constantly being dissolved along their upper portions and carried down the fissures by ground water to lower levels, where they are redeposited.
Every pebble and particle of their soil, once part of the distant mountains, has travelled slowly and fitfully to lower levels.
So soon as the rocks are broken down by the weathering processes, they are easily moved, usually to lower levels.
Where they have been opened in artificial cuttings along railroads or in mines, the original rock is found intact at the bottom, with small crevices only going down to lower levels.
But in reference to geological changes, frost in the colder latitude acts as a compensating power in the disintegration of rocks, and the transportation of stones to lower levels.
He was conscious of the great power annually exerted by rivers and marine currents in transporting earthy materials to lower levels, and he even contemplated the period when they would destroy all the present continents.
But it builds its nest at lower levels, and often comes down to forage in the lower branches, in smaller trees and even in the underbrush, where it is not particularly shy and can be easily approached.
In California, Audubon's warblers that have bred in the mountains begin to drift downward to lower levels in August, the young birds coming first, so that by September they are well spread out over the lowlands almost down to sea-level.
West-side, chiefly at lower levels; especially partial to orchards and cultivated sections.
Summer resident in western Washington; common in well-watered forests at lower levels and in thickets from sea-level to higher mountain valleys.
Summer resident on brushy slopes and in timbered valleys of the higher ranges thruout the State, and irregularly at lower levels, at least on Puget Sound (Tacoma).
Resident west of the Cascades at lower levels, rare northerly--perhaps nearly confined to the Puget Sound basin.
They flow, gradually or suddenly, from higher to lower levels.
The farmers drained the ponds as fast as they were able, carrying the water, by open ditches first, and later by underground tile drains, to lower levels.
Those of the preceding years, as we shall see hereafter, exhibit only their edges cropping out lower down one beyond another, being brought successively to lower levels by the onward motion of the glacier.
Laboratory, X-ray, and other services once available only in the largest cities were established in the district and sometimes at lower levels.
Military ranks were abolished in 1966, but the force organization at lower levels in all service components was conventional.
At lower levels, where the functions of the forces are specialized in relation to their weapons, organizational patterns appear to be similar to those in most of the other armed forces throughout the Communist world.
Forward from it, interstratified with its outer margin, and continuing the same alluvial grade, is a still greater mass of finer material which descends to lower levels.
Moreover, there is at these lofty stations no pronounced lag of the maximum and minimum temperatures for the year behind the times of greatest and least heating such as we have at lower levels in the temperate zone.
At Lima the clouds descend to lower levels (El Clima de Lima, Bol.
The above list will hopefully provide you with a few useful examples demonstrating the appropriate usage of "lower levels" in a variety of sentences. We hope that you will now be able to make sentences using this group of words.
