Ontario Geological Survey, Precambrian Geoscience Section

Slide 1: 

Precambrian Geoscience Section OGS 2011 Bedrock Mapping & Geophysical Projects

Outline: 

Outline Precambrian Geoscience Section – function, initiatives & collaborations Geoscience Projects in Geographic Regions – Far North, NW, NE & SE Planning

Core Business Functions: 

Core Business Functions Precambrian Bedrock Mapping provide maps, reports, technical talks and posters, new concepts, ideas and client consultations. Geophysical Data Acquisition and Interpretation provide regional airborne geophysical data, derivative products, concepts, ideas to support bedrock mapping.

Technical initiatives & collaborations requiring PGS resources in 2011 & 2012: 

Technical initiatives & collaborations requiring PGS resources in 2011 & 2012 Far North Land Use Planning – ongoing mapping & airborne geophysical surveys Targeted Geoscience Initiative 4 - focus on Lode Gold and Cu-Ni-PGE + Cr across Ontario; airborne gravity survey and mapping in the McFaulds Region aka “Ring of Fire” Hudson Platform Geoscience – GEO-Mapping for Energy & Minerals (GEM) – airborne geophysical survey

Far North : 

Far North Collect new geoscience data to support CBLUP, mineral resource development, far north economy, jobs - Geoscience Gap Analysis – RoF - Support TEK mapping – Eabametoong - Collaborate with GSC – TGI4, GEM

New Regional Airborne Geophysics: 

New Regional Airborne Geophysics

2010 Airborne Gravity Survey – McFaulds Region: 

2010 Airborne Gravity Survey – McFaulds Region

Winisk River Airborne Magnetometer Survey : 

Winisk River Airborne Magnetometer Survey 76000 line-km; 20,000 sq. km., 300m line-spacing Understand basement structure and influence on overlying Paleozoic rocks Kimberlite, gold, Ni-Cu-PGE Hydrocarbon potential OGS “in-kind” support to GEM

Far North Bedrock Mapping: 

Far North Bedrock Mapping

McFaulds Region Bedrock Mapping & Compilation Project: 

McFaulds Region Bedrock Mapping & Compilation Project

McFaulds Regional Bedrock Mapping & Compilation Project - Second year of project - 124 diamond-drill holes, totalling about 30 000 m re-logged to date - 53 outcrop exposures mapped - on-going modelling and integration of geophysical data as part of interpretation - collaboration with TGI-4 GSC projects & Universities: 

McFaulds Regional Bedrock Mapping & Compilation Project - Second year of project - 124 diamond-drill holes, totalling about 30 000 m re-logged to date - 53 outcrop exposures mapped - on-going modelling and integration of geophysical data as part of interpretation - collaboration with TGI-4 GSC projects & Universities

Strong dextral shear in mafic metavolcanics - o/c data provides important structural data not always discernable in drill core: 

Strong dextral shear in mafic metavolcanics - o/c data provides important structural data not always discernable in drill core o/c of magnetite-bearing tonalite - numerous large o/c of plutonic rocks; high magnetic response misinterpreted as gabbro.

Fort Hope Greenstone Belt – Bedrock Mapping Project: 

Fort Hope Greenstone Belt – Bedrock Mapping Project Miminiska Lake - 2011 Keezhik Lake - 2010

Miminiska Lake Bedrock Mapping: 

Miminiska Lake Bedrock Mapping

Northwestern Ontario: 

Northwestern Ontario

Slide 16: 

Wabigoon Synthesis: Multi-Year Project Compile geoscience data in the region New compilation maps – 1:100 000-scale Update geology in key areas – geochronology, geochemistry, controls on mineralization, stratigraphy

Gold Distribution – Manitou Lakes: 

Gold Distribution – Manitou Lakes

Slide 18: 

Wabigoon Synthesis: Multi-Year Project Rowan-Kakagi-Cameron Lakes Project Update geology – geochemistry, geochronology Improve structural understanding & controls on gold Characterize alteration

Alteration Distribution & Gold : 

Alteration Distribution & Gold

Northeastern Ontario: 

Northeastern Ontario

Bartlett & Halliday Domes Project: 

Bartlett & Halliday Domes Project Update geology, stratigraphy, structure, alteration, geochronology Improve understanding of komatiite-hosted Ni-Cu-PGE & gold in the area

Midlothian Twp.: 

Midlothian Twp.

Slide 24: 

Cot è Lake Au Gogama Bedrock Mapping & Compilation Project Understand critical geological relationships between Swayze & Shining tree areas Update geochemistry, geochronology, structural analysis Where does the Cadillac-Larder FZ go? controls on gold & Ni-Cu-PGE mineralization

Slide 25: 

Magnetite-chlorite veining in felsic flows – Hydrothermal alteration related to base metal Mineralization? Quartz-carbonate veining in Rideout Fault Zone - Brunswick Township – gold potential?

Southeastern Ontario: 

Southeastern Ontario

Projects in the CMB, Grenville Province: 

Projects in the CMB, Grenville Province Update geology, geochemistry, geochronology & metallogeny MSc - Ni-Cu-PGE in Raglan Hills & Moccasin Lake gabbros MSc - study 1090 to 1070 Ma plutons in the CMB

Slide 28: 

Assess zinc & industrial mineral potential in marbles - pegmatite-related mineralization - porphyry copper-molybdenum ± gold potential related to syenite intrusions Ni-Cu-PGE in gabbros – Raglan Hills

Project Planning: 

Project Planning Annual Process Strategic Thrusts Initiatives Projects Projects based on evaluated proposals Planning results formulate the program for the following year

Your Input Requested: 

Your Input Requested PGS would like to know: Geoscience problems that our expertise can be used to address Ideas for mapping that will assist or stimulate exploration Jack Parker (705) 670-5976 jack.parker@ontario.ca