Relationships of these sandstones to the Aroostook-Matapedia sequence between Houlton and Danforth have been poorly understood but a gradational contact with underlying Smyrna Mills pelites
has been observed in several places in the study area (Hopeck 2013; Ludman 2013).
It is formed by thick alternations of quartzose conglomerates and subordinated quartzarenites, passing in the upper ten metres of the section to dark pelites
5], and then the occurrence of garnet in the staurolite-bearing pelites
may be related to high Mn content of the rock.
We used laser-ablation split-stream (LASS) ICP mass spectrometry to measure U/Th-Pb ages and compositions of monazite from garnet + aluminumsilicate +- staurolite pelites
in the Kangmar and Mabja domes.
The bluish clay corresponds to the type 2 (relict) pelites
of Loring and Nota (1973) and to the blue-grey (layer 3) pelites
of D'Anglejan and Brisebois (1978).
are covered by sand rock debris and they are affected by old slope deformations, too.
In the units Gollon, Lavador, schists of Maranon Complex and slaty pelites
(Contaya Formation) are found seams of quartz with Au contents.
The predominantly grey Yoldia Sea deposits comprise beige or brownish-grey pelites
and grey laminated silt.
The Colombacci Formation (Uppermost Miocene), consisting of marly claystones, siltstones, sandstones, multicolored pelites
and marly limestones, overlies the Gressoso-Solfifera Formation (Upper Miocene), which contains the Perticara sulfur orebody (Conti, 1989).
Bioclasts, voids, and pelites
intraclasts are absent as is any layering.
It is characterised by the presence of quartz and tourmaline veins containing a considerable quantity of tin in Namurian sandstone and pelites
The underlying beds are classified into manganiferous pelites
, manganese dioxide, and siltites.