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Klerksdorp spheres are found in carbonaceous shales (wonderstone) that occur as lenses within the 1.5 km (0.93 mi) thick Syferfontein Formation. It is composed of feldspar-quartz-phyric felsic volcanic rocks, basaltic to andesitic lava, tuff and breccia and is part of the 2.7 km (1.7 mi) thick Mesoarchaean Dominion Group.
Scientists have established the approximate age that life first appears in the fossil record, but this is not equivalent to the age that life first evolved on Earth. Though fossils have not been found in older rocks, evidence for life can be found in other ways, such as extended carbon isotope data and Raman Spectroscopy. There is also ongoing ...
A field of ‘strange rocks’ While approaching Gediz Vallis channel, Curiosity sent back pictures of an unusual sight: a flat area, about half the size of a football field, scattered with bright ...
The earliest evidence of life found in a stratigraphic unit, not just a single mineral grain, is the 3.7 Ga metasedimentary rocks containing graphite from the Isua Supracrustal Belt in Greenland. [3] The earliest direct known life on Earth are stromatolite fossils which have been found in 3.480-billion-year-old geyserite uncovered in the ...
The 1.6-billion-year-old organisms are believed to have been the first predators on Earth. ‘Lost world’ of microscopic life in rocks could be humans’ oldest ancestors, experts say Skip to ...
Rock art found in southeastern Venezuela may have come from a previously unknown culture. Researchers believe that the roughly 4,000-year-old art signifies a central dispersion point from which ...
Stromatolites are a major constituent of the fossil record of the first forms of life on Earth. [24] They peaked about 1.25 billion years ago (Ga) [ 22 ] and subsequently declined in abundance and diversity, [ 25 ] so that by the start of the Cambrian they had fallen to 20% of their peak.
The strange monolith looks like it could have come from another world. Jutting out of the rocks in a remote mountain range near Las Vegas, the glimmering rectangular prism's reflective surface ...