alluvium

The foundation of their airy castles lay already before them in the strip of rich alluvium on the river bank, where the North Fork, sharply curving round the base of Devil's Spur, had for centuries swept the detritus of gulch and canyon.

Each wave of time contributes its alluvium, each race deposits its layer on the monument, each individual brings his stone.

It is, however, a remarkable coincidence, that in the two large islands cut off by the Beagle Channel from the rest of Tierra del Fuego, one has cliffs composed of matter that may be called stratified alluvium, which front similar ones on the opposite side of the channel, -- while the other is exclusively bordered by old crystalline rocks: in the former, called Navarin Island, both foxes and guanacos occur; but in the latter, Hoste Island, although similar in every respect, and only separated by a channel a little more than half a mile wide, I have the word of Jemmy Button for saying that neither of these animals are found.

The interpretation of the VES sounding curve realized close to the borehole indicates that the geoelectric section is composed of six layers: (1) the first three thin near surface layers have high resistivities ranging from 58 to 372 ohm-m and a total thickness of 7.5 m that correspond to top soil and dry alluviums; (2) the 42 m thick fourth layer has an intermediate resistivity of 19 ohm-m and is composed of alluvium; (3) the fifth layer has a relatively high resistivity of 47 ohm-m and also is an aquifer; and (4) the sixth and bottom layer is the conductive geoelectric basement with an average resistivity of 12 ohm-m that is composed mainly of clays.

Inactive methods like gravity and geomagnetic can map the topography of the bedrock, reveal the thickness of the alluviums above the basement and can assist in delineating the internal structures of the basins.

There is no visible architectural structure on the ground since the alluviums carried by the Sari[R][bar]ay in the Damlibogaz village covered it up.