Stratigraphy, facies architecture and tectonic implications of the Upper Devonian to Lower Carboniferous Campwyn Volcanics of the northern New England Fold Belt

Stratigraphy, facies architecture and tectonic implications of the Upper Devonian to Lower Carboniferous Campwyn Volcanics of the northern New England Fold Belt

“…We note that contrary to Bryan et al . (2003a) two mid-Devonian fossil assemblages are recorded from the Campwyn Volcanics.…”

“…The Campwyn Volcanics are an important element of the northern New England Orogen occupying a coastal tract in central Queensland between Stannage Bay and Proserpine. We welcome the documentation and interpretation of it presented by Bryan et al . (2003a) in a study that complements and extends our previous investigation (Fergusson et al .…”

“…Fergusson et al . (1994) and Bryan et al . (2003a) agree that much of the Campwyn Volcanics has abundant coarse volcaniclastics and volcanics along with siliceous sandstone, siltstone/mudstone, limestone and intrusive rocks.…”

“…We note that Bryan et al . have been able to document a contact between these two facies associations, both with substantial thicknesses, in only one lithostratigraphic section in the Green Hill area (Bryan et al . 2003a figure 2).…”

“…Only seven marine macrofossil-bearing horizons are known from the Campwyn Volcanics, and thus biostratigraphic control as a basis of a composite stratigraphy is very limited. Bryan et al . (2003a) assigned nearly all of the fossiliferous horizons represented in the Campwyn Volcanics to within the upper part of the formation and as representing Late Devonian -Early Carboniferous ages.…”