Significados de boulder clay en inglés

The chalk, then, is certainly older than the boulder clay.

The range was very steep, and fully 1200 feet high, composed entirely of boulder clay.

The fluvio-marine series usually terminates upwards in finely laminated sands and clays without fossils, on which reposes the boulder clay.

This boulder clay had extended all the way from San Rafael, and ranges of hills appeared to be composed entirely of it.

They are seen in some places to rest on the boulder clay of the glacial period, which will be described in future chapters.

There seem to be only three or four instances as yet known in all Scotland of mammalia having been discovered in boulder clay.

The ground was entirely composed of boulder clay, and not until we had travelled about five miles did we see any rock in situ.

Our course at first lay up the banks of a torrent that had cut deeply into beds of boulder clay filled with great stones.

We returned to the city in time to be present at a most interesting lecture by Hugh Miller on the Boulder Clay.

The overlying unstratified boulder clays 3 and 4 were thrown down in deeper water by the aid of floating ice coming from the north.