Updated my website, clip of my placers.

http://web.mac.com/jrichm99/Site/Wel...

HYDROVOLCANIC BRECCIA PIPE STRUCTURES -GENERAL FEATURES AND GENETIC CRITERIA -

I. PHREATOMAGMATIC BRECCIAS

http://bioge.ubbcluj.ro/~bonac/pdf/2...

3. Dimensions

Phreatomagmatic breccias could be considered giants in the breccia community. The sizes of diatremes can reach impressive values, both on vertical and on horizontal(Surface) scales. Commonly, their height (depth) overtop 1000 m (Sillitoe, 1985), but often they have greater vertical development, up to 2500 – 3000 m (Lorenz, 1975, 1986, Sillitoe, 1985). As regards the horizontal (surface) dimensions we may state that the diameters of phreatomagmatic diatremes usually exceed several hundreds of meters but may range up to over 1 km. Among the biggest values for horizontal (surface) dimensions of phreatomagmatic breccias we may quote several extreme examples like Wau (Papua New Guinea) - 1.4 x 1.4 km (Sillitoe et al., 1984), and Montana Tunnels (Montana, USA) – 2.1 x 0.6 km (Sillitoe et al., 1985). Obviously, the most impressive one is the amazing Guinaoang breccia pipe from Philippine (Sillitoe and Angels, fide Sillitoe et al., 1985) with 8.5 x 3.5 km dimensions!

Represa is only the beginning, hoping for next week too.