Publications Release Notice — March 2, 2021

Mines and Minerals Division: 

The following publications are available now for free download from GeologyOntario, or by following the links provided in this release notice.

Maps and reports in hard-copy (paper) format and digital data sets available on physical media (CD or DVD) can be purchased from the Publication Sales office.

In cases where the file size is prohibitive for downloading, please contact the Publication Sales office to obtain the data on physical media (CD for $20.00; DVD for $25.00).

The digital data provided with maps as downloadable zip files from GeologyOntario contain additional information that supplements the cartographic information, and is provided at the discretion of the author(s).

Prices listed in this Release Notice apply to hard-copy versions only and are subject to change without notice. The prices given in a particular release notice are guaranteed only for a period of 1 month following the date of the release.

To automatically receive the Publications Release Notice by email, subscribe to the distribution list by contacting Publication Sales.

Announcement

The Ontario Geological Survey (OGS) is looking to purchase proprietary airborne geophysical survey data from private-sector companies to enhance its current inventory. These data will be put into the public domain to encourage mineral exploration and support economic recovery. Through this request for data, the Ministry of Energy, Northern Development and Mines will solicit, evaluate, and may choose to purchase privately owned airborne geophysical data (survey data) that meet both OGS quality standards and program objectives. You can review or download the complete Request for Data from the Ministry's Web site.

Earth Resources and Geoscience Mapping Section

Precambrian Geology – Northwestern Ontario

Miscellaneous Release—Data 308 – Revised
New and Compiled Whole-Rock Geochemical and Isotope Data of Midcontinent Rift–Related Rocks, Thunder Bay Area; by R.M. Cundari, M.A. Puumala, M.C. Smyk and P. Hollings. This digital data release is an update of the Midcontinent Rift geochemical database released in 2013 as Miscellaneous Release—Data (MRD) 308. MRD 308—Revised includes new whole-rock and trace element analyses for 124 bedrock samples of mafic igneous rocks related to the Mesoproterozoic Midcontinent Rift. The release also includes a compilation of geochemical data for Midcontinent Rift–related rocks from the following previously released digital data sets: MRDs 114, 132, 133, 146, 147, 190, 261—Revised, 308, 319, 345, 352 and 368. The historical compilation includes 2821 spatially referenced data points with geochemical analyses. Additionally, 132 samples with Rb, Sr, Nd, Sm and/or εNd isotopic data are also included in this release, compiled from various sources. The compilation of data and a brief overview of the referenced MRDs and analytical procedures are presented as 2 Microsoft® Excel® for Office 365 (.xlsx) and 2 portable document format (.pdf) files. The data are available on 1 CD. $20.00

Surficial Geochemistry

Miscellaneous Release—Data 322 – Revised
Indicator Mineral and Geochemistry Data for the Till and Alluvium Sampling Survey in the McFaulds Lake (“Ring of Fire”) Area, Northern Ontario; by C. Gao, D.C. Crabtree, R.D. Dyer and S.A. Clarke. This digital data release is a revision of Miscellaneous Release—Data (MRD) 322, which was published in 2016. These digital data present the results of a regional till and modern alluvium sampling survey in the McFaulds Lake (“Ring of Fire”) area, in northern Ontario. The samples were collected during the summer field seasons between 2011 and 2015. The data consist of indicator mineral grain counts, geochemical and compositional data of kimberlite indicator minerals (KIMs), chromite, metamorphic/magmatic massive sulphide indicator minerals (MMSIM®*), and gold grains recovered from till and river sand and gravel (alluvium) samples. In addition, this revised version provides bulk mineralogy of fine-fraction, 0.125–0.25 mm nonmagnetic heavy mineral concentrates; proportional dot maps of the spatial distribution of the fine-fraction detrital chromite grains; and an expanded microprobe data of detrital chromite grains, including those from sand- to pebble-size chromitite clasts. The files contain specific information on sample site locations, sample processing data, KIMs picked and picking remarks, electron probe microanalyzer results of KIM and chromite grains, adjusted KIM results, gold grain data, MMSIM® data, clastic lithology data and geochemical data from the <0.063 mm fraction of the bulk samples, as well as the spatial distribution of the fine-fraction detrital chromite grains and photomicrographs of the chromitite clasts. These data supplement Open File Report (OFR) 6309 (available separately), providing the data generated during the study. In this release, Appendix 8 has been revised; however, Appendixes 18, 19 and 20 provide new data and are not discussed in OFR 6309. This release comprises 19 Microsoft® Excel® for Office 365 (.xlsx) files, 20 backscattered electron images (.tif files) and 3 documents in portable document format (.pdf). The data are available on 1 CD. $20.00
[*MMSIM is a registered trademark of Overburden Drilling Management Limited, Nepean, Ontario.]

Miscellaneous

The Ministry of Northern Development and Mines has prepared supplements for Miscellaneous Papers (MP) 177 and 178 to include publications released in 2020. Also, the Bedrock Geology Index to Maps and Surficial Geology Index to Maps are updated to include all maps released in 2020. Miscellaneous Paper 177 (Supplement 2011–2020), MP 178 (Supplement 2011–2020) and the maps are available as free downloads or can be purchased in hard-copy format from Publication Sales.

Miscellaneous Paper (MP) 177 (Supplement 2011–2020)
Index to Published Reports, Maps and Digital Data, 2011–2020
This report provides a listing of all publications released since the publication of MP 177 (Supplement 1993–2010), Index to Published Reports, Maps and Digital Data, 1993–2010. Publications are listed by series only. 225p. $9.90

Miscellaneous Paper (MP) 178 (Supplement 2011–2020)
Geographic Index to Published Reports, Maps and Digital Data, 2011–2020
This report provides a listing of all publications released since the publication of MP 178 (Supplement 1994–2010), Geographic Index to Published Reports, Maps and Digital Data, 1994–2010. Publications are indexed by geographic areas, which include National Topographic System (NTS) areas, geographic townships and Ministry of Natural Resources (MNR) “areas”. Publications are listed under the main geographic areas where they are located. 924p. $14.80

Index to Maps, Bedrock Geology, 1991–2020; produced by the Publication Services Unit, scale 1:1 000 000, colour. Available as a set of 4 maps. $12.00

Index to Maps, Surficial Geology, 1991–2020; produced by the Publication Services Unit, scale 1:1 000 000, colour. Available as a set of 4 maps. $12.00

AttachmentSize
PDF icon location map march 2 2021.pdf309.89 KB