Petrographically the section was discriminated between accretionary lapilli tuffs, fine hyaloclastite
tuffs and mudstones cycles.
2013: Three-dimensional lithofacies in hyaloclastite
Two lenticular bodies of porphyritic and amygdaloidal basalt are found intercalated within the Hyaloclastite
mudstone units of the Bagh complex (Siddiqui et al.
has been reported from mafic hyaloclastite
beds of the Sawyer Brook Member about 200 m stratigraphically above the sampled Campbell Point tuff horizon (Fyffe et al.
The volcanic rocks from basalt-chert unit (Bbc) and hyaloclastite
-mudstone unit (Bhm) are comprised of pillowed and bedded basalt, hyaloclastite
and reworked sediments.
On Campobello Island it consists of locally pyritiferous, black to grey siltstone, lithic sandstone, shale and argillite intercalated with thick (up to several tens of metres) units that contain vesicular flows, agglomerate and/or well-developed hyaloclastite
These include abundant dark green, fine-grained, amygdaloidal, porphyritic basalt flows, and lesser pillow lava, basalt breccia and bedded hyaloclastite
1993) consists of volcanic flows, hyaloclastite
and volcaniclastic sandstone and siltstone.
The rocks recovered include variably palagonitized glassy lavas (pillows, clinker, sheet flows) coated with manganese crusts, and hyaloclastites
The submarine volcanic rocks include lava flows, broken pillow breccias, submarine breccias, close-packed pillow lavas and hyaloclastites
At present, the collection contains more than 500 samples spanning the basaltic to rhyolitic composition including lavas, hyaloclastites
, intrusions, and a few sedimentary rocks of volcanic origin.
Lower basalts are sills, upper basalts are predominantly pillow lavas and hyaloclastites
, (vitrified, basaltic fragments and dust).