Guidebook to the Geological Fieldtrips to South Greenland - 2013

Rare Earth Deposits & Mining

Kolb, Bartels, and three co-authors assembled the guidebook in 2013. Kolb, of the Geological Survey of Denmark and Greenland led the field trips and led off the guidebook with a description of the Ketilidian Orogen. The following is a list of the subjects covered in the guidebook:

The Ketilidian orogen 
The Julianehåb batholith
The Psammite zone
Geodynamic interpretation
 
Metallogeny of the Ketilidian orogen
The Amitsoq graphite deposit 
The Nalunaq gold deposit
Local area geology 
Deposit type and local structures 
Alteration types 
Splayed discoloration of host rocks
Garnet-epidote alteration
Clinopyroxene alteration 
Quartz and calcite veins 
Hematite alteration 
Granitic intrusions 
Discussion topics 
The Gardar province 
Magmatic chronology 
Supracrustal rocks of the Eriksfjord Formation
Sedimentary rocks
Lavas
Pyroclastic flows
Dykes
Plutons 
Grønnedal-Ika (1.299 Ga)
Kûngnât (1.275 Ga) 
Ivigtut (1.250 Ga) 
Nunarssuit (1.171 Ga) 
Puklen (1.171 Ga) 
Klokken (1.166 Ga)
Central Tugtutôq complex (1.156 Ga) 
Paatusoq (1.144 Ga) 

Detailed geology of chosen localities:
Igaliko complex 
Dyrnæs-Narssaq 
The Ilímaussaq complex
Introduction to the geology 

Structure of the intrusion: 
The agpaitic suite 
The Naujaite
The Lujavrite 
The Kakortokite 
Marginal pegmatite
Kakortokite layering 

Metallogeny of the Gardar province 
Kvanefjeld, Ilimaussaq 
Kringlerne, Ilimaussaq 
Kryolit mine
Motzfeldt
Dykes