The results of the comparative characteristics of Ishim Formation pelitic
siltstones and materials of various origins used as additives are presented in Table 6.
Step-wise growth of biotite porphyroblasts in pelitic
schists of the western Lys-Caillaouas massif (Pyrenees).
Being different from other pelitic
rocks in texture characteristics, the shales are capable of splitting into laminae.
The transition to deeper level partial melting apparently occurred during the Lochkovian Stage of the Early Devonian based on the emplacement age of 415.5 [+ or -] 2.1 Ma for the Wellington Lake Granite, the youngest 'A-type' pluton, and the emplacement age of 413.3 [+ or -] 2.1 Ma, for the John Lee Brook Granite, the oldest 'S-type' pluton in the backarc region; the former was likely generated at least in part by partial melting of Neoproterozoic volcanic and plutonic rocks underlying the Mascarene belt, and the latter at least in part by granulite-facies dehydration melting of pelitic
rocks of the St.
Size and pelitic
siltstone dominated particles (Table 1).
The lower contact of the Los Arroyos Formation is defined as an angular unconformity over the pelitic
metasediments of the Cretaceous Tunapuy Formation of Paria Peninsula (Figure 3).
The quartz veins containing gold occur in association with metamorphosed rocks ranging in composition from semipelitic to pelitic
The northern part lies in a hilly area where the geologic substrate is pelitic
schist of the Precambrian "flyschoid series" (Orapu schist of Armina series [9, 10]).
The second section of the Badong Group is located in the upper part of the landslide and its lithology alternates between purple-red pelite and pelitic
As regards geology, the surface of the basin corresponds to an extensive sandy cover of Tertiary/Quaternary age whose pelitic
fraction is extremely rare (Figure 2).