NEW (March 31, 2026)
Geological mapping in Owari and Touno districts
Japanese→ http://y95480.g1.xrea.com/owari_mapping_jp.htm
English → http://y95480.g1.xrea.com/owari_mapping_en.htm
1. Geologic Map
2. Granite –Granitoids series, Plagioclase mineralogy etc.
3. Geology of Mongolia --- Report, Maps etc.
Mongolian Geoscientist (Open access and Archive)
Ch. 1 Geologic Maps (As of June 27, 2020)
World
One Geology Portal
http://portal.onegeology.org/OnegeologyGlobal/
Australia
Map site of Australian Government Geoscience Australia
http://www.ga.gov.au/data-pubs/maps
Japan
Seamless geological map of Japan (in Japanese)
https://gbank.gsj.jp/seamless/
Mongolia;
The 1:1 million scale map in territory of Mongolia
http://y95480.g1.xrea.com/mapdatamongolia.htm
Antarctica, Sor Rondane Mountains;
http://y95480.g1.xrea.com/sorrondigest.htm
Geographic Information System (GIS)
TNT mips
Downloads site of MicroImages, Inc. Free geodata viewer TNTatlas, Sample data and Tutorials are useful for studying GIS.
Software, Documentation, and Resources
Geological guide maps;
Geological mapping in Owari and Touno districts
http://y95480.g1.xrea.com/owari_mapping_en.htm
Hiromi Line, Nagoya Railway
http://y95480.g1.xrea.com/hiromi_line_geology_en.htm
Tokai Nature Trail in Aichi Pref., Japan (pdf)
http://y95480.g1.xrea.com/aichi_guidemap_en.pdf
Mt. Tsukuba in Ibaraki Pref., Japan (HTML digest version)
http://y95480.g1.xrea.com/tsukuba_outline.htm
Around Ulaanbaatar, Mongolia (HTML digest version)
http://y95480.g1.xrea.com/ubgeology.htm
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Ch. 2 Granite (As of June 24, 2020)
Lecture notes
Geology and Mineralogy of Granites
http://y95480.g1.xrea.com/granite_takahashinote.pdf
Granitoids series
Ishihara, S. (1977): The magnetite-series and ilmenite-series．Mining Geology，27，293-305．
https://www.jstage.jst.go.jp/article/shigenchishitsu1951/27/145/27_145_293/_article/-char/ja/
Plagioclase twinning
Understanding twinning law (2020.3.19)
→ Link
This site is prepared with condolence for Dr. Suwa.
Dr. Suwa Kanenori, Professor Emeritus of Nagoya University, died at age of 91 on March 15, 2020. Takahashi studied plagioclase twinning under guidance of Dr. Suwa.
Case studies
Granitic rocks in Tsukuba area, Japan
Arakawa, Y. and Takahashi, Y. (1988): Rb-Sr ages of granitic rocks from the Tsukuba district, Japan. Journal of Mineralogy, Petrology and Economic Geology, vol. 83, p. 232-240.
https://www.jstage.jst.go.jp/article/ganko1988/83/6/83_6_232/_article
Granitic rocks in Sor Rondane Mountains, East Antarctica
T. Sakiyama, Y. Takahashi and Y. Osanai (1988) Geological and petrological characters of the plutonic rocks in the Lunckeryggen-Brattnipene region, Sor Rondane Mountains, East Antarctica. Proc. NIPR Symp. Antarct. Geosci., no. 2, p. 80-95.
https://cir.nii.ac.jp/crid/1390009224896693760
Geologic map (brief version) for Sor Rondane Mountains
http://y95480.g1.xrea.com/sorrondigest.htm
Ch. 3 Geology of Mongolia (As of June 27, 2020)
3.1 Geologic maps and Research reports
3.2 Environmental Assessment
3.3 Lecture Note; Pumpelly
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3.1 Geologic maps and Research reports
The 1:1 million scale geologic map in territory of Mongolia
http://y95480.g1.xrea.com/mapdatamongolia.htm
In Journal of Mineralogical and Petrological Sciences
An early Paleozoic tectonothermal event in western Mongolia (Owada et al.)
→ JMPS, vol. 108 (1), 42-46, 2013
Metamorphic pressure-temperature evolution of garnet-chloritoid schists from the Lake Zone, SW Mongolia (Javkhlan et al.)
→ JMPS, vol. 108 (5), 255-266, 2013
Middle Paleozoic greenstones of the Hangay region, central Mongolia: Remnants of an accreted oceanic plateau and forearc magmatisim (Erdenesaihan et al.)
→ JMPS, vol. 108 (6), 303-325, 2013
Mongolian Geoscientist, the geological journal in Mongolia since 1996
Open access site
https://www.mongoliajol.info/index.php/MGS
Archive
Tectonics
O. Tomurtogoo (1997) A new tectonic scheme of the Paleozoides in Mongolia. Mongolian Geoscientist, no.3, p.12-19.
à Link (pdf 918 KB)
G. Badarch and D. Orolmaa (1998) Overview of the Geology and Tectonic evolution of Southern Mongolia. Mongolian Geoscientist, no.10, p.10-17.
à link (pdf 427 KB)
G. Badarch (2005) Tectonic overview of Mongolia. Mongolian Geoscientist, no.27, p.1-7.
à link (pdf 1.7 MB)
Resource geology
G. Dejidmaa(1996) Gold Metallogeny of Mongolia . Mongolian Geoscientist, no.1, p.6-29.
à Link (pdf 911 KB)
Sh. Batjargal, J. Lkhamsuren and D. Dorjgotov(1997) Lead-Zinc ore deposits in Mongolia. Mongolian Geoscientist, no.2, p.2-14.
à Link (pdf 627 KB)
B. Kotlyar, T. Drown, F. Tungalag, and O. Gantsetseg(1998) Two types of mineralization in the North Khentei gold tend. Mongolian Geoscientist, no.11, p.10-13.
à Link (pdf 230 KB)
D. Janchiv and N. Ichinnorov (2007) Petroleum Potential of Mongolia. Mongolian Geoscientist, no. 31, p.62-66.
à Link (pdf 1,278 KB)
Garamjav D. and Jargalan S (2009) Introduction to REE Metallogeny of the Mongolia. Mongolian Geoscientist, no. 35, p.73-76.
àLink (pdf 612 KB)
Excursion guide
O. Gerel and J. Lkhamsuren (1998) Granitic pluton of Gorkhi with crystal-bearing miarolic pegmatite. Mongolian Geoscientist, no.10, p.94-103.
Y. Takahashi, N. Ichinnorov, S. Jargalan, S. Khishigsuren and J. Lkhamsuren (2004) Geology around Ulaanbaatar - Field excursion guide for East Eurasian Geological Seminar 2003 -. Mongolian Geoscientist, no. 24, p. 11-16.
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3.2 Environmental Assessment in Mongolia
-- Results of Graduate School programs in Nagoya University
Air pollution in Ulaanbaatar
http://y95480.g1.xrea.com/phd_result_from_alldata.htm
River water analyses along Serbe River in Ulaanbaatar
http://y95480.g1.xrea.com/frc_2017sep4_9_study_top.htm
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3.3 Lecture notes; Pumpelly
Pumpelly, American geologist who surveyed geology of Mongolia in 19th century
http://y95480.g1.xrea.com/pumpelly_takahashinote.pdf
Ch. 4 For self-study of Geology
Preface
This site is prepared for the young geologists. The site includes overview of earth science and geology, rock classification, microscope observation, resource geology and environment geology.
CONTENTS
4.1 Introduction to Earth Science
4.2 Rock Classification
4.3 Resource and Environment
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4.1 Introduction to Earth Science (As of June 27, 2020)
Geological Time
Website of University of California, Berkeley. We can study stratigraphy, ancient life and tectonics in each geologic time.
Geological Dictionary
At the site of University of California, Berkeley
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4.2 Rock Classification (As of June 27, 2020)
Glazner, A.F. et al. (2019): A more informative way to name plutonic rocks. GSA Today, 29, 4-10.
https://www.geosociety.org/gsatoday/science/G384A/article.htm
The IUGS system for rock classification was introduced more than 40 years ago. The authors propose a quantitative modification to the IUGS system that reduces the number of distinct names but more effectively communicates the inherent variability of plutonic rocks.
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4.3 Resource and Environment (As of June 27, 2020)
Copper deposits
Kimball, B. E. (2013) Minerals explained 53; Chalcopyrite - bearer of a precious, non-precious metal. Geology Today, 29, 30-35. (Not only mineralogy of chalcopyrite but also copper mining industry is explained.)
Yang, Z. and Fu, Y. (2020) Distinct evolution history of magmatic oxygen fugacity and its control on associated porphyry Cu deposits under subduction and collisional settings. Geological Journal, vol. 55, 7101-7113.
4.3.2 Mining and Environment
Nelson Eby (2020) The smelters and the tree – an environmental story. Geology Today, vol.36, 59-63.
https://onlinelibrary.wiley.com/doi/full/10.1111/gto.12302
4.3.3 Nature and human society
SDGs and Geology
Gill, J.C. (2017) Geology and the Sustainable Development. Episodes, vol. 40, 70-76.
http://www.episodes.org/journal/view.html?volume=40&number=1&spage=70&vmd=Full
Lecture notes
Outreach activities in geology under the SDGs scheme
An outreach activity in geology under SDGs scheme (xrea.com)
Geology in Human Society
(Lecture slides in Nagoya University of Economics, FY2024 version)
http://y95480.g1.xrea.com/nue_inuyama_geology_en.htm
END
Editor of this home page
Yuhei TAKAHASHI, Retired from Geological Survey of Japan
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