The impressive Macha impact craters belong to the best examples of recent bombardment with iron meteorites. These surprisingly fresh looking craters were formed approximately 7,300 years ago.

Small lakes at the tributary of Macha river were well known, but only in the 1980s, during an aerial survey it was noticed that this group of small lakes has surprisingly round form and could be formed by meteorite impact.

The first description of these craters was made in 1984 by Ukrainian scientists Gurov E.P. and Gurova E.P. Today the meteoritic origin of these craters is proved.

In total in this area are five craters. Two largest ones (diameter – 300 and 200 m) form the pear-shaped Abram Lake. The eastern crater (marked with b on the map) is partly filled with alluvial deposits.

The northernmost crater (No.3. on the map) is approximately 20 m deep. It has no lake on the bottom, just a small mire.

Crater No.2. has round lake and very steep and fresh looking, sandy slopes around the lake.

Crater No.1. is almost united with the largest crater – Abram Lake.

Macha craters have formed in Quaternary sand and Late Proterozoic sedimentary rocks.

Age of craters has been determined, based on the analysis of charred wood in the walls of ejecta around the craters. Additional proof of meteoritic origin is planar deformation in sand particles.

Small, metal-bearing samples have been found as well – analysis shows that the composition of this material is comparable to the particles of Tunguska event.

It is assumed that craters were formed by an iron meteorite, exploding with a 150 kT yield.

Macha craters on the map
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Location, GPS coordinates: 60.0848 N 117.6538 W
Categories: Impact craters, Lakes and streams
Values: Geology
Rating: 3.5 out of 10 stars
Where is located? Asia, Russia, western part of Sakha Republic, on the tributary of Macha river
Name in Russian: Мача кратер (in singular)
Diameter: up to ˜ 300 m
Depth: ? m
Age: ˜ 7 300 years

Landmarks of Russia

St. Basil's Cathedral in Moscow in the night
St. Basil’s Cathedral in Moscow in the night / Asguskov, Wikimedia Commons / CC-BY-SA-3.0
The largest country in the world, Russia, is associated in the minds of many people with the onion domes of Orthodox churches and the massive walls of the Moscow Kremlin. But besides the unique architecture, Russia offers many more unusual and exciting attractions.

Impact craters

Pingualuit crater, Canada
Pingualuit crater / NASA, Wikimedia Commons, public domain
There are many pieces of solid matter flying around in the space. And VERY frequently they fall on the surface of Earth. There are estimates that every year on Earth fall 18,000 – 84,000 meteorites larger than 10 grams: e.g. one meteorite every 6 – 30 minutes.

This category includes outstanding impact craters – detectable scars on the surface of Earth left by a body coming from outer space. The category includes also meteorites – natural objects from the outer space.

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