Intrusive Spur [SEP] continent
Intrusive Spur
Intrusive Spur () is a rock spur along the north front of the Jones Mountains, Antarctica, west of Avalanche Ridge. It was mapped by the University of Minnesota Jones Mountains Party in 1960–61, and was so named by them because the intrusive complex of the basement rocks of the Jones Mountains is well exposed on the spur.
See also.
- Mountains in Antarctica
of volcanic rock, particularly andesite and the Pergamon massif is also an intrusive stock of andesite. The massif is about one kilometre wide and around 5.5 km long from north to south. It consists of a broad, elongated base and a relatively small peak - the upper city. The side facing the Cetius river is a sharp cliff, while the side facing the Selinus is a little rough. On the north side, the rock forms a 70 m wide spur of rock. To the southeast of this spur, which