South-East Greenland Mineral Endowment Task (SEGMENT): 2014 Workshop abstract volume and status primo 2014

Bo Møller Stensgaard (Redaktør)

Publikation: Bog/rapportRapport (offentligt tilgængelig)

Abstrakt

The SEGMENT project (South-East Greenland Mineral ENdowment Task) is financed joint-ly by GEUS and the Ministry of Industry and Mineral Resources, Government of Greenland (MIM; formerly the Bureau of Minerals and Petroleum). The objective of the SEGMENT project is to increase the data coverage and knowledge-base in order to facilitate and im-prove evaluation of the mineral endowment of the North-Atlantic Craton, the Ammassalik Mobile Belt, and the Palaeogene magmatic suite in South-East Greenland between 62°N and 67°N.

SEGMENT was initiated in 2009 with regional reconnaissance and stream sediment, till and fresh water sampling through 2009 and 2010. The analytical data for these samples represent the first modern comprehensive analytical data set from the region and were used for the planning of the investigations to be carried ut in the following years. In 2011 and 2012 the focus was centered in the Skjoldungen area of the North Atlantic Craton in South-East Greenland (62°N to 64°N). Analytical work continued through 2013 as prepara-tion for field campaign further north in Proterozoic and Palaeogene terranes. The 2014 op-eration from a base in the Tasilaq region (Kuummiut) covered areas from the northernmost part of the North Atlantic Craton at 64°N and the Palaeoproterozoic Nagssugtoqidian Oro-gen (Ammassalik Mobile Belt), to the Palaeogene intrusions at Kap Gustav Holm and in the Kialineq district at 67°N.

The purpose of the 2014 workshop at GEUS in March 2014 was to summarise the ongoing work carried out as per primo-2014 on the basis of the in 2011 and 2012 fieldwork in the Skjoldungen region. The presentations from the workshop are available on the CD-ROM attached to this report.

The work in the Skjoldungen region includes detailed mapping and profiles, complimented with tectonometamorphic and petrological investigations. An extensive radiometric age determination program has allowed preparation of maps showing the regional distributions of radiometric ages and isotopic compositions. Extensive petrological investigations of the many different unites of intrusive complexes in the region have been and will be carried out. Tectonometamorphic models and lithostratigraphy of the mafic and supracrustal rock suites are also described and studied. The investigations include a follow-up on known mineral-ized sites in the region, a follow-up on stream sediment anomalies, as well as geophysical and remote sensing data.

The second objective of the workshop was a review the existing information and under-standing of the geology of the Tasiilaq region as the basis for the planning of fieldwork to be carried out in the summer of 2014. A work program comparable to that in the Skjoldungen area was planned including a follow-up on the results from the Government of Greenland run Ujarassiorit program (public hunt-for-mineral program). In addition to the classic survey investigations outreach activities in the settlements were prepared and pro-duction local field-guides for towns and settlements of the regions were initiated.

SEGMENT is carried out in parallel with regional aeromagnetic surveys. The AEROMAG 2012 and 2013 projects cover all regions included in SEGMENT. These data have played an important role in the fieldwork, and extensive follow-up and geological cross-validation of anomaly patterns in the aeromagnetic data have been carried out.
OriginalsprogEngelsk
UdgivelsesstedCopenhagen
ForlagGEUS
Antal sider94
Vol/bind2014
DOI
StatusUdgivet - 16 jan. 2015

Publikationsserier

NavnDanmarks og Grønlands Geologiske Undersøgelse Rapport
ForlagGEUS
Nr.79
Vol/bind2014

Emneord

  • Greenland

Programområde

  • Programområde 4: Mineralske råstoffer

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