トゥルガイの地上絵

トゥルガイの地上絵（Steppe Geoglyphs）はカザフスタン北部、トゥルガイで発見された新石器時代の構造物群である。少なくとも260以上の構造物が発見されている^[1]^[2]。

構造物

これら構造物の多くは、盛り土、構、塁壁など比較的小さなストラクチャーからなり、それらをいくつも並べることで四角、十字、線や輪^[1]といった幾何学図形やその他の複合的な図形が形づくられている。図形の大きさは直径およそ90メートルから400メートル^[3]、地面の掘削や盛り土以外にも、いくつかの図形では石を並べるという手法が取られている^[4]。

発見

この地上絵は2007年にディミトリ・デイ（Dimitriy Dey）によって発見された^[5]^[6]。彼はグーグルアースのサテライトイメージを使いカザフスタンのピラミッドを探索しているときにこの地上絵を見つけている^[5]。ピラミッドは世界中で見つかっている、という内容のテレビ番組に影響されたものだった^[5]。その後2014年になって初めて学会に報告された^[7]。

光刺激蛍光線量（en:optically stimulated luminescence）からこれら構造物の作られた年代が測定され、結果は8千年前から1千年前の間を示した^[8]^[1]。ディミトリ・デイは7千年から9千年前のマハンジャルスク文化（Mahandzhar culture）の痕跡ではないかと提起している^[9]。

参考文献

^ ^a ^b ^c Blumenthal, Ralph (October 30, 2015). “NASA Adds to Evidence of Mysterious Ancient Earthworks”. November 1, 2015閲覧。
^ Epstein, Adam (October 31, 2015). “Even NASA is perplexed by these otherworldly 8,000-year-old formations in Kazakhstan”. November 1, 2015閲覧。 “Since then, Dey has found about 260 of the land designs—which resemble crop circles, but are much stranger.”
^ http://www.pitt.edu/~super1/lecture/lec53991/htm
^ Zolfagharifard, Ellie (October 30, 2015). “Who drew a swastika on the steppe 8,000 years ago? NASA images reveal riddle of giant drawings that can only be seen from the air”. dailymail.co.uk. November 1, 2015閲覧。
^ ^a ^b ^c Blumnethal, Ralph (October 30, 2015). “NASA Adds to Evidence of Mysterious Ancient Earthworks”. November 1, 2015閲覧。 “Spotted on Google Earth in 2007 by a Kazakh economist and archaeology enthusiast, Dmitriy Dey, the so-called Steppe Geoglyphs remain deeply puzzling and largely unknown to the outside world.”
^ Jarus, Owen (September 23, 2014). “Nazca Lines of Kazakhstan: More Than 50 Geoglyphs Discovered”. November 1, 2015閲覧。 “Discovered using Google Earth, the geoglyphs are designed...”
^ https://www.academia.edu/8610704/Steppe_Geoglyphs_mark_the_ancient_routes_of_human_migration_across_Central_Asia_introduction_to_the_research
^ http://www.pitt.edu/~super1/lecture/lec53991/07-018.htm
^ “NASA releases images of enormous 8,000-year-old patterns”. (October 30, 2015) November 1, 2015閲覧. "Dey's research suggests that the figures could have been constructed by the Mahandzhar culture, who thrived in the vast steppes of what is now northern Kazakhstan between 5,000 and 7,000 B.C."

外部リンク

[Blumnethal-1] Blumenthal, Ralph (October 30, 2015). “NASA Adds to Evidence of Mysterious Ancient Earthworks”. November 1, 2015閲覧。

[2] Epstein, Adam (October 31, 2015). “Even NASA is perplexed by these otherworldly 8,000-year-old formations in Kazakhstan”. November 1, 2015閲覧。 “Since then, Dey has found about 260 of the land designs—which resemble crop circles, but are much stranger.”

[3] ttp://www.pitt.edu/~super1/lecture/lec53991/htm

[4] Zolfagharifard, Ellie (October 30, 2015). “Who drew a swastika on the steppe 8,000 years ago? NASA images reveal riddle of giant drawings that can only be seen from the air”. dailymail.co.uk. November 1, 2015閲覧。

[Blumnethal_a-5] Blumnethal, Ralph (October 30, 2015). “NASA Adds to Evidence of Mysterious Ancient Earthworks”. November 1, 2015閲覧。 “Spotted on Google Earth in 2007 by a Kazakh economist and archaeology enthusiast, Dmitriy Dey, the so-called Steppe Geoglyphs remain deeply puzzling and largely unknown to the outside world.”

[6] Jarus, Owen (September 23, 2014). “Nazca Lines of Kazakhstan: More Than 50 Geoglyphs Discovered”. November 1, 2015閲覧。 “Discovered using Google Earth, the geoglyphs are designed...”

[7] ttps://www.academia.edu/8610704/Steppe_Geoglyphs_mark_the_ancient_routes_of_human_migration_across_Central_Asia_introduction_to_the_research

[8] ttp://www.pitt.edu/~super1/lecture/lec53991/07-018.htm

[9] “NASA releases images of enormous 8,000-year-old patterns”. (October 30, 2015) November 1, 2015閲覧. "Dey's research suggests that the figures could have been constructed by the Mahandzhar culture, who thrived in the vast steppes of what is now northern Kazakhstan between 5,000 and 7,000 B.C."

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