146 The American Geologist. 
March, 1903. 
whose remains have been found, mired down into the marshy 
soil on the border of the lakelet be a sound one, it was prob- 
ably contemporaneous with the Quaternary g-laciation of the 
Union creek valley, provided there was not an interglacial stage 
of which we as yet know nothing. In fact, I am strongly im- 
pressed that the elephant lived very shortly after the maximum 
extension of the glacier and that if the deposits at the Nash 
mine represent an earlier stage or epoch of glaciation than 
those near the head of the Union creek valley, the animal was 
contemporaneous with the first stage. That is my conviction 
but for the sake of conservatism I do not like to be too positive 
in expressing it. 
The track of the glacier was followed up the Union creek 
valley. Along the Union creek ditch of the mining plant, near 
the penstock 333 feet above bed-rock in the mine on Cofifce 
creek and overlooking the Nash mine, there was found a mix- 
ture of rounded serpentine boulders and schist debris embed- 
ded in un stratified sandy clay. There was one finely striated 
boulder. This deposit rests on mica schist, and the serpentine 
must have been lifted or else brought down the valley a con- 
siderable distance. There are several similar deposits along 
the ditch within the next half mile. They seem to be remnant"^ 
of a lateral moraine leading directlv to the Nash mine. 
The trail from the Dorleska mine comes down over glacial 
deposits until within about one and one-half miles of the 
mouth of the Union creek valley, at which point there is an 
appearance of cessation of the glacial action. For the next 
mile the trail, still high above the creek, traverses a mass of 
broken rock whose position (partly obstructing the valley) 
and topography mark it as a gigantic landslide. Following 
the ditch below the landslide, one finds instead a mixture of 
rounded and smoothed serpentine boulders and schist debris, 
with an occasional striated boulder or cobble. Apparently, the 
landslide has occurred since the glaciation, and its material 
overlies the glacial deposit. Since the landslide the creek has 
excavated a caiion at least several hundred feet deep and 
whose floor is usually only a little wider than the creek, 40 
to 50 feet. 
At about one and one-half miles from the mouth of the 
creek, the canon opens out into a wider valley, characterized 
