Taylor Formation

G. I. Taylor Formation of thin flat sheets of water. Proceedings of the Royal Society of London. 259, 1-17 (1960). 

Taylor Formation quartzite, hornfels, marble Shackleton Limestone Selborne Marble Archaeocyatha limestone, marble, conglomerate, quartzite... 

All investigators agree that the rocks of the Byrd Group were deposited during the Cambrian Period because the Shackleton Limestone as well as the Taylor Formation (in the Shackleton Glacier area) contain fossils of Cambrian age (Laird and Waterhouse 1962 Hill 1964a, b Palmer and Gatehouse 1972 Yochelson and Stump 1977 Debrenne and Kruse 1986). 

Henson marble Taylor formation (jreenlee fonnation... 

The Taylor Formation was shown to be of Early to Middle Cambrian age by Yochelson and Stump (1977) and by Encamacion et al. (1999). 

Fig. 5.16 The Gerasimou Glacier, Epidote Peak, Mt. Greenlee, and Taylor Nunatak in the central part of the Shackleton Glacier are the principal landmarks that identify the type section of the Greenlee and Taylor formations and of the Henson Marble which constitute the Byrd Group of this area. Excerpt of the topographic map entitled Shackleton Glacier, Antarctica, SVl-10/1 S 8400-W-16500/1 x 5 published by the US Geological Survey, Washington, DC...

The overlying Taylor Formation consists of ashfall and ashflow tuffs, felsic and mafic lava flows, and marbles. Wade and Cathey (1986) placed the contact of the Taylor Formation with the underlying Greenlee Formation at about 6 km south of the northern tip of Mt. Greenlee (Fig. 5.16). The contact is obscured by the brecciation and hydrothermal alteration of the Greenlee Formation manifested by the crystallization of epidote. 

The beds of the Taylor Formation exposed along the southern spur of Mt. Greenlee dip south at 40-70° and appear to reach a thickness of about 5.7 km. Additional outcrops of the Taylor Formation occur on Taylor Nunatak (84°44 S, 176°10 W) and on Waldron Spur which is located on the east side at the mouth of the Shackleton Glacier (Wade and Cathey 1986). 

Taylor Nunatak in Fig. 5.16 extends parallel to the ice-flow direction of the Shackleton Glacier for about 6 km and the elevation of its summit is 1,570 m. The rocks exposed in its nearly vertical slope that faces the glacier consist of ashfall tuffs, ashfall flows, and marble. The rocks have been folded into a large anticline indicated by a reversal of dip from 70° north at the northern end of the nunataks to 70° south at its southern end. However, the lithologic compositions of the north and south limbs do not match, perhaps because the structure is a fault rather than an anticline. The crest of the nunatak is covered by a sill of Ferrar Dolerite (Middle Jurassic) which is about 12 m thick. The Taylor Formation on Taylor Nunatak is composed of approximately equal proportions of... 

Cambrian Henson Marble Taylor Formation Henson Marble Fairweather Formation... 

The Fairweather Formation is younger than the Duncan Formation and was originally described by McCjregor (1965b) as a crushed quartz-sandstone. Stump et al. (1976) classified it as a massive, silicic, porphyritic volcanic rock including nonporphyritic varieties and volcanic breccias. In addition, the Fairweather Formation contains thin beds of marble and chert. Wade and Cathey (1986) considered that the lithologic composition of the Fairweather Formation resembles the Taylor Formation in the Shackleton Glacier area and therefore correlated the two formations as indicated in Table 6.1. 

Encaracion, J., Rowell, A.J. and Grunow, A.M. (1999) A U-Pb age for tbe Cambrian Taylor Formation, Antarctica implications for the Cambrian time scale . Journal of Geology, 107, 497-504. 

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