CHAPTER III (Conc.)

PAGE
Structuralorelations 2 seca reer ee ee 33
Avgeand correlation ee se ce era ee 34
Endako: Groupies een ae eee ne es ae eg Ee BS
Intrusive tOCKs i Afb cee ong oth sik ale ee ee 39
Topley mtrusion s/s: 2025 eis ee ee ae ee Soe ee cree suet am 39
Post-Miuddlesurassicumtrustonsy eee ee ee 42
CHAPTER IV
Structural and nsstonicalseologyy pe ee 45
Structuralsseolopy cso e salt re ohn nce ee ee 45
TSO Sie cere tis 2 siilieade oes cl lula tine Creeley Vr et eee nee nena 45
| at 1S aiaarer ieee Nt rive hy ahs ad aaa rep Mees A ES 46
Mistorical: seolo gy sc. e ot Se ne ees te i lc ar ee me 47
Pennsylyanianeandeeenmi ane tireless me ee eee ee eae 47
BanlycandeMnd dle tli assic tin el tee een nn eee eee ee 47
Late: Triassicstime ts se aise 47
Barly Jurassic tuimersnt. che ee ek cat ee 48
Miaddlemliura ssres tii ey centen cetera tniy tet tk eer ee eee 49
Hate wl ULassic tines... sre car on eetee esc hott a et 2 eee ee 49
Late Jurassic/and Barly; Cretaceous times ee 49
Late Cretaceous} to late Oligocene timet. 0... eee 49
Miocene mime. anderen scr au ie eee teh end 50
atesMirocenesandebltocente tiie sees eet eee eee 51
Pleistocene time... Se A ee et oa at 31
Recent time sc 82nd et Se Soe PH Se een 51
CHAPTER V
Economic geology 3 220 ie ae see ne ee 52
Description of mineralvandimockideposits! 5) 53
Bibliography ooo scene eth oe Meee en ae SY)
LLY LT See ee nae OT SO AIR tie Ao A ONE, in ape a ara CER A 67
Illustrations
Map 1131A. Geology of Nechako River, British Columbia........0.0.0.0.0.0.00000... In pocket
Plate DS AS iran COIS bake at\e 8 ee rata ara eet era oe re reine 61
B. Falls on West Road (Blackwater) Rivero... cccccceeeceeeeeee 61
IDA Interiors Ran pest crt eee te tree eer ele 62
B. Low hills south of Francois Lake................ccccccecseccecseeeececeseeee, 62
TE Esker complex along Nechako Rivers: 179): eee 63
Ves Glaciallysstriated topography) sn) en 64
Vi WAS Basalt Ayer. © sc. ete ovat OR aan Or eae ene Ot ne 65
Bi vBasalt Columns cee at ete cy) tn ene cee ROE ee codes 65