What's New in Geoscience
Geoscience EventsGeoscience Events include conferences, conventions, meetings, open houses, workshops, etc. on mining topics in
British Columbia.
BC Geological Survey Announcements include bulletins, reports, new publications, new services, etc. on mining topics.
For more information on geology and minerals in British Columbia please contact the
BC Geological Survey (BCGS) mailbox or use the toll free number (B.C. residents only).
BC Geological Survey Announcements (most recent first)
NEW!
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British Columbia Ministry of Energy and Mines
Mines and Mineral Resources Division
BC Geological Survey
Release Notification 2012-06
April 23, 2012
Staff Update:
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Alexei Rukhlov is the new Senior Geochemist at the BC Geological Survey. Alexei’s focus will be applied geochemistry studies and development of provincial geochemical databases.
Alexei has strong expertise in mineralogy, igneous petrology, radiogenic isotope geochemistry, class 100 clean laboratories and mass spectrometry. Alexei’s post-doctoral research at Carleton University focused on Ca, Sr, Pb, Nd and Hf isotopic systematics and geochronology of carbonatites to monitor chemical perturbations in the subcontinental mantle from the Archean to the Recent. In the Canadian Cordillera, Alexei managed exploration and development of carbonatite-hosted Nb-Ta-REE deposits of the Blue River area and studied geochemistry, mineral potential and magmatism of the Mesoproterozoic Belt-Purcell basin in SW Alberta. Alexei’s recent projects at Alberta Geological Survey were metallic mineral potential evaluation of Alberta and geochemistry and petrology of ultrapotassic rocks of the Sweet Grass Hills igneous complex. Alexei has taught at St. Petersburg State University and has published his research findings in several international journals. |
Email: Alexei.Rukhlov@gov.bc.ca
Phone: 250-952-0396
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Janet Riddell is the new Senior Minerals Coal Geologist at the BC Geological Survey. Janet’s focus will be rebuilding the Ministry’s in-house coal geology expertise.
Janet has many years of experience in the Canadian Cordillera, in the mineral exploration and forestry industries, as a bedrock mapper with the B.C. Geological Survey, and as a Petroleum Geologist with the Oil and Gas Division of the Ministry. Her past projects include shallow freshwater aquifer potential in shale gas regions of northeast B.C., evaluation of oil and gas potential in the Nechako region, forest ecosystem mapping, and Tatlayoko/Taseko Lakes geological mapping. |
Email: Janet.Riddell@gov.bc.ca
Phone: 250-952-0350
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Larry Aspler is the new Marketing and Publications geologist at the BC Geological Survey. Larry’s focus will be to manage the Survey’s publications and provide marketing expertise.
Complex deformation in his Ph.D. field area (Nonacho Basin, N.W.T) led Larry to expand his interests from an initial specialization in sedimentology, stratigraphy, glacial geology, and paleoclimatology to acquire expertise in structural geology and tectonics. Larry maintains a strong interest in natural hazards and in using the geologic record to establish recurrence intervals of potentially catastrophic events over time frames extending beyond historical accounts.
Larry has taught at Carleton University, State University of New York (Potsdam) and most recently at Grinnell College in Iowa. He is an Associate Editor of the Journal of Marine and Petroleum Geology, serves on the Editorial Board of the Journal of African Earth Sciences, and is a critical reviewer for several international journals. |
Email: Lawrence.Aspler@gov.bc.ca
Phone: 250-952-0391
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Fiona Katay is the new GIS Geologist at the BC Geological Survey. Fiona will be focused on the update to the BC Geology Bedrock map layers and integrating the ongoing regional studies into the geological and geospatial databases.
Fiona began her career as a petroleum geologist and worked for 12 years in the oil and gas industry in Calgary doing geological mapping, 3D modelling, and resource evaluation of subsurface reservoirs. Most recently over the past few years, she has been working as a geological consultant in mining exploration, working as a grade control and mapping geologist at an open pit gold mine, running field exploration programs, and compiling and managing data. In addition, she consulted as a geomorphologist, mapping Pleistocene glacial sediments and modern-day depositional environments, doing field assessments, and GIS. |
Email: Fiona.Katay@gov.bc.ca
Phone: 250-952-0395
Correction
There was an error in the data release "BCGS Open File 2012-04 / Geoscience BC Map 2012-08-1: Dease Lake -- Little Tuya River Geology, NTS 104J/ 08 & 07E." Specifically, the convergence on the King Salmon thrust fault and a splay which confines the Cache Creek rocks was reversed in both the map and data package.
Corrected versions of the PDF map and data package have now been posted to our website and are available for download
Our apologies for any inconvenience.
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Most provincial geoscience data can be easily accessed over the internet in map format at:
www.MapPlace.ca and through various thematic pages at www.empr.gov.bc.ca/Mining/Geoscience
Printed BC Geological Survey geoscience publications are available digitally, free of charge, from this website.
Crown Publications, Queen's Printer are no longer selling paper copies of our publications.
Questions or to update your contact info please contact the BC Geological Survey:
Email: Geological.Survey@gov.bc.ca Tel: 250-952-0372 Fax: 250-952-0381
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British Columbia Ministry of Energy and Mines
Mines and Mineral Resources Division
BC Geological Survey
Release Notification 2012-05
April 3, 2012
Contents:
Open File 2012-04: Dease Lake - Little Tuya River Geology (NTS 104J/08 & 7E)
Property File Update: Digital Archive of Regional Geochemistry Survey (RGS) Maps
Open File 2012-04: Dease Lake - Little Tuya River Geology (NTS 104J/08 & 7E)
J.M. Logan, D.P. Moynihan, L.J. Diakow and B.I. van Straaten
http://www.empr.gov.bc.ca/Mining/Geoscience/PublicationsCatalogue/OpenFiles/2012/Pages/2012-4.aspx
Geoscience BC's QUEST-Northwest Project is a multidisciplinary, integrated project designed to help focus mineral exploration in a highly prospective area of northwestern BC. The project's main activities include: two airborne magnetic surveys flown at line spacing of 250 metres, bedrock geological mapping and a geochemical program. The digital bedrock data set presents the field mapping results of the QUEST-Northwest Dease Lake Geoscience project - a partnership between Geoscience BC and the BC Geological Survey. The project completed regional scale bedrock geological mapping over a 1275 km2 area extending south west from the community of Dease Lake to the Tuya River that coincides with the northwest corner of the QUEST-Northwest Block 1 airborne magnetic survey area (released through Geoscience BC in January).
The Dease Lake map sheet 104J/08 and the east half of Little Tuya River map sheet 104J/07 are underlain mainly by Paleozoic to Late Triassic sedimentary, volcanic and plutonic arc rocks of the Stikine Terrane, which locally host large Cu-Au porphyry deposits like Red Chris, Schaft Creek and Galore Creek. In the northeast part of the map these rocks are thrust imbricated with similar aged volcanic and sedimentary oceanic rocks of the Cache Creek Terrane along the north-dipping King Salmon Fault. Early to Middle Jurassic sedimentary rocks of the Takwahoni and Inklin formations of the Whitehorse Trough overlie the Stikine and Cache Creek terrane rocks respectively. Middle Jurassic granodiorite and an equi-dimensional Paleocene granite with associated molybdenum mineralization intrudes the Early Jurassic Takwahoni sedimentary rocks. Unconformably capping some of the highest peaks in the area are columnar basalts of the Miocene to Pliocene Tuya Formation. Preserved beneath these young basalts in the southwest corner of the map are lower Tertiary coal-bearing sediments of the Tanzilla Canyon Formation.
The map provides revised geology, geochemical analyses of alteration and mineralization and new isotopic dates for volcanic and plutonic rocks in the area which when integrated with regional exploration target models and the new airborne magnetic and geochemical data collected by Geoscience BC are expected to benefit the exploration community.
Digital Archive of Regional Geochemical Survey (RGS) Maps
Hardcopy maps showing sample locations for the Regional Geochemical Surveys (RGS) in BC have been scanned and digitally archived. In total, 875 maps are indexed and archived as “RGS Maps” Collection in the Property File, accessible to the public at http://propertyfile.gov.bc.ca. This work is the result of a joint effort by the BC Geological Survey and Geoscience BC.
The RGS program in BC started in the 1970s and over the last 40 years has involved the Geological Survey of Canada, the BC Geological Survey, Geoscience BC and contractors. The original hardcopy maps used to locate the sample sites range in map scales from 1:250,000 to 1:50,000, and were stored Ottawa, Victoria and other locations. While effort was made to archive the original hardcopy maps, other sources were retrieved and digitized if the original maps were not available. These secondary sources include the hardcopy maps used in the field, as well as Mylar and consolidated maps with transcribed sample locations.
The digital archive of the RGS maps not only helps to preserve this important source of data, but also makes these maps accessible to the public. These maps can be used to validate exact sample locations, within the context of streams and other geographic features shown on the original topographic maps used during sample collection. This is especially important at locations where streams have changed course over time, or where the streams shown on the original topographic map at a smaller scale do not match up with the streams shown on a more recent topographic map at a large scale. Errors in the sample locations may also occur when transcribing and transferring into the database.
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British Columbia Ministry of Energy and Mines
Mines and Mineral Resources Division
BC Geological Survey
Release Notification 2012-04
March 2, 2012
New Publications:
Open File 2012-02: Till Geochemistry of the Huckleberry Mine Area, West-Central British Columbia
Information Circular 2012-2: British Columbia Coal Industry Overview 2011
Open File 2012-02: Till Geochemistry of the Huckleberry Mine Area, West-Central British Columbia (NTS 093E/11)
T. Ferbey, V.M. Levson and R.E. Lett
http://www.empr.gov.bc.ca/Mining/Geoscience/PublicationsCatalogue/OpenFiles/2012/Pages/2012-2.aspx
The silt plus clay-sized fraction of 106 near-surface (<4 m below surface) and 193 sub-surface (up to 30 m below surface) basal till samples collected in the Huckleberry Mine area was analyzed for 37 elements by inductively coupled plasma mass spectrometry (ICP-MS), following an aqua regia digestion, and 35 elements by instrumental neutron activation analysis (INAA). These data show that there is a good spatial relationship between elevated commodity element concentrations in basal tills and the known locations of porphyry Cu-Mo mineralization in bedrock. Geochemical data presented here will enable meaningful assessments of new regional-scale till geochemical data that have been collected in areas adjacent to the mine and provide a means of comparison for other explorationists working in the area who are using other geochemical sample types (e.g., stream sediments, till, etc.). As well, these results will help with the development of strategies for the design and implementation of till geochemistry programs in areas with similar physical and geological characteristics and complex glacial histories.
Information Circular 2012-2: British Columbia Coal Industry Overview 2011
D. Grieve, B. Madu and R. Chu
http://www.empr.gov.bc.ca/Mining/Geoscience/PublicationsCatalogue/InformationCirculars/Pages/IC2012-2.aspx
This booklet is intended to provide a concise snapshot of the BC coal industry for the interested public, including those looking to invest. It includes sections on coal resources, mining, exploration, the tenure system, sources of information, and contacts. It is intended to complement “Exploration and Mining in British Columbia 2011” and “British Columbia Mines and Mineral Exploration Overview 2011”
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British Columbia Ministry of Energy and Mines
Mines and Mineral Resources Division
BC Geological Survey
Release Notification 2012-03
February 22, 2012
New Publications:
GeoFile 2012-02: Rare Metal-bearing Deposits in British Columbia with Selected Examples
GeoFile 2012-06: Mapping BC's Golden Triangle using ASTER Imagery
GeoFile 2012-07: QUEST-Northwest Mapping: BC Geological Survey Dease Lake Geoscience Project (NTS 104J, 104I), Northern British Columbia.
GeoFile 2012-08: Mesozoic Magmatic History and Metallogeny of the Hotailuh Batholith (NW BC)
Open File 2012-05: Geology of the Turnagain Ultramafic Intrusion, Northern British Columbia (parts of NTS 104I/07 and 10)
GeoFile 2012-02: Rare Metal-bearing Deposits in British Columbia with Selected Examples
G.J. Simandl, E.A. Prussin, K. Hancock and S. Meredith-Jones
http://www.empr.gov.bc.ca/Mining/Geoscience/PublicationsCatalogue/GeoFiles/Pages/2012-2.aspx
More than 100 RM occurrences are reported in BC. This compilation may serve as a starting point for those considering RM exploration programs in BC. There is uncertainty in the classification of some occurrences due to the scarcity of available information or the unusual nature of particular occurrences. The economic significance of many of these occurrences is poorly known because the size, shape, depth, grade, composition and orientation are not well defined. Based on currently available information, carbonatite-/syenite-related deposits are the most promising for the recovery of RMs, especially Nb and REE.
GeoFile 2012-06: Mapping BC’s Golden Triangle Using ASTER Imagery
T. Han, J.L. Nelson and J. Kyba
http://www.empr.gov.bc.ca/Mining/Geoscience/PublicationsCatalogue/GeoFiles/Pages/2012-6.aspx
The Advanced Space-borne Thermal Emission and Reflection Radiometer (ASTER) has been found effective for geological mapping applications due to its high spectral resolution in the Shortwave Infrared (SWIR) wavelengths of the electromagnetic wave; frequent revisit cycle and wide swath; and affordability of acquiring images to cover large geographic areas. Using ASTER imagery to map BC's geology, however, faces a few challenges, among others, including complex terrain and dense vegetation coverage. This may partially explain why there are not many documented studies in this regard. This study focuses on testing ASTER's ability on mapping the general rock groups in BC's “Golden Triangle” area, including Triassic Stuhini, Jurassic Jack Formation, Jurassic Hazelton, and the “Combined” which was the combination of “Altered and Mineralized” and “Late Jurassic Intrusion”. An average of 79.8% classification accuracy was achieved. The result indicated that ASTER was capable of distinguishing the above general rock groups. Since this study was conducted exclusively using the spectral information extracted from ASTER imagery and employing a standard image analysis method based on a supervised classification, the result and method of this study can be considered as the baseline, upon which other data sources and advanced image analysis methods need to be explored to take advantage of ASTER’s full potential for geological mapping in BC.
GeoFile 2012-07: QUEST-Northwest Mapping: BC Geological Survey Dease Lake Geoscience Project (NTS 104J, 104I), Northern British Columbia
J. Logan, L. Diakow, B. van Straaten, D. Moynihan and O. Iverson
http://www.empr.gov.bc.ca/Mining/Geoscience/PublicationsCatalogue/GeoFiles/Pages/2012-7.aspx
Geoscience BC's QUEST-Northwest Project is a multidisciplinary, integrated project designed to help focus mineral exploration in a highly prospective area of northwestern BC.
The project's main activities include: two airborne magnetic surveys flown at line spacing of 250 metres, bedrock geological mapping and a geochemical program. Collectively these programs will provide detailed, high quality geoscience data that is intended to assist metallic mineral exploration in this area of highly prospective geology.
The QUEST-Northwest Dease Lake Geoscience project is a partnership between Geoscience BC and the BC Geological Survey and is the focus of this poster.
GeoFile 2012-08: Mesozoic Magmatic History and Metallogeny of the Hotailuh Batholith (NW BC)
B. van Straaten, J. Logan and L. Diakow
http://www.empr.gov.bc.ca/Mining/Geoscience/PublicationsCatalogue/GeoFiles/Pages/2012-8.aspx
The composite Late Triassic to Middle Jurassic Hotailuh batholith occupies 2275 km2 at the centre of the Stikine arch, close to the northern margin of the Stikine terrane in northwestern BC. We present the preliminary results of detailed mapping, geochemical and geochonological sampling aimed at refining the temporal magmatic evolution of the batholith, and building a metallogenic framework that relates mineralization to magmatic events. The project is part of the Geoscience BC funded QUEST-Northwest program developed to stimulate mineral exploration in the northwestern part of the province.
This study confirms that the Hotailuh batholith is prospective for intrusion-related mineral deposits that formed during at least two mineralizing events – an older event at ca. 220 Ma and a younger event at ca. 170 Ma. The Late Triassic calc-alkaline metallogenic event produced the Gnat Pass porphyry Cu and several other Cu and Cu-Au occurrences on the edges of the Hotailuh batholith, and may be temporally related with Cu mineralization at Schaft Creek further to the southwest. Newly discovered mineral occurrences in Middle Jurassic calc-alkaline plutonic rocks represent a relatively unrecognized metallogenic event that deserves more attention.
Open File 2012-05: Geology of the Turnagain Ultramafic Intrusion, Northern British Columbia (parts of NTS 104I/07 and 10)
G.T. Nixon, A.C. Hitchins and G.P. Ross
http://www.empr.gov.bc.ca/Mining/Geoscience/PublicationsCatalogue/OpenFiles/2012/Pages/2012-5.aspx
Magmatic Ni-Cu-PGE sulphide deposits in supra-subduction zone (SSZ) settings are becoming an increasingly important economic resource worldwide yet remain poorly understood and underexplored. Projects initiated recently under the Targeted Geoscience Initiative No 4 in the Canadian Cordillera seek to address critical knowledge gaps in order to develop new mineral deposit models and robust exploration criteria. The Turnagain ultramafic intrusion is an Early Jurassic Alaskan-type body emplaced in a SSZ setting and unusually enriched in Ni-Cu-PGE sulphides. The new geology map incorporates previous BCGS mapping supplemented by geological, geophysical and ongoing exploration work (drillhole and trenching information) supplied by Hard Creek Nickel Corporation (HNC). The main mineralization is hosted by wehrlite and dunite (Horsetrail zone), and the principal sulphide minerals are pyrrhotite, pentlandite and chalcopyrite. Regional geophysical surveys conducted by HNC indicate that the highly conductive graphitic metasedimentary wallrocks (Mississippian in part) of the Turnagain intrusion are separated from miogeoclinal strata of Ancestral North American by a steeply dipping reverse fault, and represent the basement to the accreted Quesnel Terrane (Yukon-Tanana Terrane). This interpretation appears consistent with the tight to slightly overturned, eastward-verging folds in the graphitic phyllites documented by Erdmer et al. (2005) and juxtaposed strata of the Ancestral North American miogeocline which occupy the southwesterly-dipping limb of a large homoclinal structure (Gabrielse, 1998).
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British Columbia Ministry of Energy and Mines
Mines and Mineral Resources Division
BC Geological Survey
Release Notification 2012-02
January 24, 2012
New Publications:
GeoFile 2012-01: Use of Portable XRF in evaluation of Rare Earth Element-bearing Phospate Deposits
GeoFile 2012-03: A KML file to Display Producing Mines in British Columbia at Any Range or Point in Time in the Last 160 Years
GeoFile 2012-04: Using Regionated KML Files to Display the Status of a Large Number of Mineral Occurrences in British Columbia
GeoFile 2012-05: Using Regionated KML Files to Speed up the Display of a Large Number of Regional Geochemical Survey Sites in British Columbia
Poster Highlights
Upcoming Releases and Events:
GeoFile 2012-01: Use of Portable XRF in evaluation of Rare Earth Element-bearing Phosphate Deposits
G.J. Simandl, R. Fajber, E.A. Prussin, S. Paradis and K. Grattan
http://www.empr.gov.bc.ca/Mining/Geoscience/PublicationsCatalogue/GeoFiles/Pages/2012-1.aspx
GeoFile 2012-03: A KML file to Display Producing Mines in British Columbia at Any Range or Point of Time in the Last 160 Years
Y. Cui
http://www.empr.gov.bc.ca/Mining/Geoscience/PublicationsCatalogue/GeoFiles/Pages/2012-3.aspx
The KML file MinFile_production_ts.kmz contains 1,696 past and current producing mines over the last 160 years in British Columbia that can be displayed at any range or point of time by using the Time Slider on Google Earth®. Only mines with known operating years are included in this KML file.
GeoFile 2012-04: Using Regionated KML Files to Display the Status of a Large Number of Mineral Occurrences in British Columbia
Y. Cui
http://www.empr.gov.bc.ca/Mining/Geoscience/PublicationsCatalogue/GeoFiles/Pages/2012-4.aspx
Regionated KML files have been created to provide a lightweight and quick display of over 12,500 mineral occurrences on Google Earth®. An application has been developed to extract the data from the MINFILE database and style the occurrences based on their status.
GeoFile 2012-05: Using Regionated KML Files to Speed up the Display of a Large Number of Regional Geochemical Survey Sites in British Columbia
Y. Cui
http://www.empr.gov.bc.ca/Mining/Geoscience/PublicationsCatalogue/GeoFiles/Pages/2012-5.aspx
To speed up the display of over 60,000 Regional Geochemical Survey (RGS) sites on Google Earth®, regionated KML files have been produced. In this release, the data is extracted from the RGS database and the sample sites are ranked or scored based on copper content. Due to the large number of sample sites, a single KML file containing all the sites would be too big both for displaying on Google Earth® or as a network link from a website. The regionation technique allows the creation of thousands of inter-linked small KML files (file sizes 9 KB or less in this case), and only fetches and displays a small number of KML files at a given viewing altitude, which significantly improves the performance of loading and displaying the sample sites.
Poster Highlights in the BC Room
The BC Geological Survey, in conjunction with Mineral Titles, Ministry of Forests, Lands and Natural Resources and the Environmental Assessment Office will be providing informal presentations in the BC Room [Seymour Room]. The presentations will be made over the course of Round Up and the feature event of the BC Geological Survey will be late Tuesday afternoon. Topics covered will include geological highlights, Mineral Titles information and permitting / environmental assessment information. These are short presentations and will include opportunities for discussion and questions from clients to Ministry staff. A detailed schedule is available at the Province of BC corporate booth as well as in the BC Room.
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British Columbia Ministry of Energy and Mines
Mines and Mineral Resources Division
BC Geological Survey
Release Notification 2012-01
January 23, 2012
New Publications:
Geological Fieldwork 2011
Exploration and Mining in British Columbia 2011
Mines and Mineral Exploration Overview 2011
Open File 2012-01: Operating Mines and Selected Major Exploration Projects
Poster Highlights
Upcoming Releases and Events:
- GeoFile 2012-02 January 24th at 10:00 a.m.
- GeoFile 2012-03 January 24th at 10:00 a.m.
- GeoFile 2012-04 January 24th at 10:00 a.m.
- GeoFile 2012-05 January 24th at 10:00 a.m.
- Bruce Madu will be presenting a review of Mines, Development and Exploration in BC 2011 on the morning of January 23rd.
- George Simandl and Jim Logan will be presenting their talks in the Public Geoscience Session at Roundup on the morning of January 24th.
- JoAnne Nelson, Graham Nixon, Paul Schiarizza and Bram van Straaten will be presenting BC Mineral Exploration Poster Highlights in the BC Room on the afternoon of January 24th.
Visit staff at the MEM booth or the BC Room (Seymour Room) during Roundup.
Geological Fieldwork 2011: A summary of field activities and current research
Paper 2012-01
http://www.empr.gov.bc.ca/Mining/Geoscience/PublicationsCatalogue/Fieldwork/Pages/GeologicalFieldwork2011.aspx
The annual Geological Fieldwork: A Summary of Field Activities and Current Research volume is the primary publication for reporting results of the previous season’s mapping and research activities. It contains geoscience articles produced by BC Geological Survey staff and external authors on topics relevant to British Columbia. This is the premier annual publication for the BC Geological Survey.
Exploration and Mining in British Columbia 2011
J. DeGrace, J. Kyba, P. Jago, J. Britton, B. Northcote, D. Grieve and B. Madu http://www.empr.gov.bc.ca/Mining/Geoscience/PublicationsCatalogue/ExplorationinBC/Pages/2011.aspx
Mines and Mineral Exploration Overview 2011
J. Britton, J. DeGrace, D. Grieve , J. Kyba, B. Madu and B. Northcote
http://www.empr.gov.bc.ca/Mining/Geoscience/PublicationsCatalogue/InformationCirculars/Pages/IC2012-1.aspx
Operating Mines and Selected Major Exploration Projects in British Columbia - 2011
J. Britton, J. DeGrace, D. Grieve, P. Jago, J. Kyba, B. Madu, B. Northcote and R. Chu
Open File 2012-01
http://www.empr.gov.bc.ca/Mining/Geoscience/PublicationsCatalogue/OpenFiles/2012/Pages/2012-1.aspx
This Provincial Map shows the location of major exploration projects and producing metal, coal and industrial mineral mines in 2011.
Poster Highlights in the BC Room
The BC Geological Survey, in conjunction with Mineral Titles, Ministry of Forests, Lands and Natural Resources and the Environmental Assessment Office will be providing informal presentations in the BC Room [Seymour Room]. The presentations will be made over the course of Round Up and the feature event of the BC Geological Survey will be late Tuesday afternoon. Topics covered will include geological highlights, Mineral Titles information and permitting / environmental assessment information. These are short presentations and will include opportunities for discussion and questions from clients to Ministry staff. A detailed schedule is available at the Province of BC corporate booth as well as in the BC Room.
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go to archived publications for 2011
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