Publisher's Synopsis
Excerpt from Papers on the Geology of New Mexico, With Plates IX-XII, And, the Geology of the San Pedro and the Albuquerque Districts, With Plate XIII
Seen from the south, our volcano appears as a broad-based cone from which skeleton ridges extend to the north-west and south. The entire eastern base is composed of the acid series just described, most characteristic being the red coarse granite with large quartz grains and sparsely and crudely mingled horn blende. Even at a great distance from the south one can de teet the broad light stripe of obliquely tilted limestone where it is exposed by some vast eruptive outburst which not only tore open the very vitals of the mountain but plowed an enormous furrow across the lime and thus made good its escape to the south and east. Little is left to show of this ?ow but the eroded edge of the lime to the north and the tilted and scattered.
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