So, it is possible that the main corridor is mostly a shear zone. It is possible that the entire width of the shear zone can be mineralized with gold at an economical grade. And, as you can see from the shear zone link, these zones can be up to km,s wide.

"The width of individual shear zones stretches from the grain scale to the kilometer scale. Crustal-scale shear zones (megashears) can become 10 km wide and consequently show very large displacements from tens to hundreds of kilometers.

Brittle shear zones (faults) usually widen with depth and with an increase in displacements."

The interesting part for me from above, is the widening that usually occur with shear zones, and the thought that the giant anomaly is part of one.

Now this next excerpt below explains the importance of the shear zone to our diseminated mineralization.

The importance of shear zones lies in the fact that they are major zones of weakness in the Earth's crust, sometimes extending into the upper mantle. They can be very long-lived features and commonly show evidence of several overprinting stages of activity. Material can be transported upwards or downwards in them, the most important one being water circulating dissolved ions. This can bring about metasomatism in the host rocks and even re-fertilise mantle material.

Shear zones can host economically viable mineralizations, examples being important gold deposits in Precambrian terranes.

http://en.wikipedia.org/wiki/Shear_zone

And here is a little on crack and seal, which is important at the Tesoro, and is partially what they talk about when they mention multiple events happening on the Tesoro.

http://virtualexplorer.com.au/special/meansvolume/contribs/bons/text/3_2.html

And below is 2 mentions of veins widening at depth on the Tesoro with their respective links.

1)Look at page 2, top right paragraph, where it says widen significantly

http://www.miningstockreport.com/media/downloads/Mining_Stock_Report_St_Elias_Summary_Report.pdf

2)

At Zona Canchete there are five principle veins measuring up to 200 meters long within a 400m by 400m area. Two of these veins strike north-northwest and three strike east-west. All veins are steep dipping. The veins are narrow at surface, generally less than 20cm, but widen at depth. Samples from these veins generally assay more than 16.0g/t (0.5 oz/T) gold. The veins at the bottom of the deep piques in this area are reported to be 60-80cm (2 ft – 2.5 ft) in width.

At Zona Canchete there are five principle veins measuring up to 200 meters long within a 400m by 400m area. Two of these veins strike north-northwest and three strike east-west. All veins are steep dipping. The veins are narrow at surface, generally less than 20cm, but widen at depth. Samples from these veins generally assay more than 16.0g/t (0.5 oz/T) gold. The veins at the bottom of the deep piques in this area are reported to be 60-80cm (2 ft – 2.5 ft) in width.

http://steliasmines.com/projects/peru-projects/tesoro-peru/

IMO