Figure 8. Geological map of the Kokchetav Massif compiled
using the data reported in the [Geology of Northern
Kazakhstan..., 1987].
(1) Cenozoic-Middle Paleozoic,
(2) volcanic rocks of the Kipchak Middle-Late Ordovician ensialic
island arc, (3) terrigenous rocks from the forearc basin and
accretionary prism of the Middle-Late Ordovician Kipchak island
arc, (4) volcanic rocks of the Stepnyak Early-Middle Ordovician
mature island arc, (5) volcanogenic sedimentary and olistostrome
rocks of the Stepnyak island arc, (6) Early-Middle Ordovician
jaspers, (7) Early-Middle Ordovician oceanic basalts,
(8) Cambrian-Early Ordovician black shale and phthanite (the shelf
rocks of the Ulutau-North Tien Shan Massif),
(9) undifferentiated shale and olistostrome rocks of the
accretionary prisms of the Early-Middle Cambrian and Early
Ordovician island arcs, (10) volcanic rocks of the Boshchekul
Early-Middle Cambrian ensimatic island arc, (11) ophiolite
sheets, (12-16) olistoliths and olistoplacks in olistostromes of
different ages: (12) clastic quartzite of the Late Riphean Epi-Grenville
sedimentary cover, (13) acid volcanics of the Late
Riphean marginal volcanic belt, (14) Riphean basalt and
jaspilite, (15) Proterozoic granitized metamorphic rocks,
(16) eclogite, (17) Late Ordovician and Devonian granitoids,
(18) basements of tectonic nappes and slabs, (19) other faults.