Our online science mall at sciencemall-usa.com is a geek gift store for the adult science enthusiast, science educator, and science researcher. Our mission is to provide science gifts, science educational products, meteorites, necklace, pendant, earrings, and fulgurite lightning sand jewelry. We also sell school geology rock and mineral specimens, rare mineral matrix specimens, pallasites, tektites, Libyan Desert Glass, fulgurite lightning sand, Lichtenberg figures, Titanic coal, school rock collections, manganese nodules, elements of the periodic table, fossils and legal historical artifacts. Rare earth rock specimens such as ancient life stromatolites (earth's earliest life), shatter cones, banded iron formation, Greenstone belt BIF banded iron formation, KT/boundary, K-Pg boundary, radioactive minerals, weird stuff to buy, science art posters, prints, curio desk displays, science jewelry pendant necklace earrings, hand crafted artisan jewelry for KennedyCoJewelry, are also our specialty.
Akilia Island "Oldest Known Sedimentary Rocks on Earth"
Akilia Island is home to the oldest known sedimentary rocks on Earth. This metamorphosed supracrustal sequence has been dated to be at least 3.85 billion years old, which places its age in the Hadean eon. The age is based on the igneous rocks that transverse the sequence.
The Akilia Island sedimentary rocks are rich in iron and silica, which have left scientists to conjecture as to it being true banded iron or of submarine hydrothermal vent origin. The element carbon is present in these rocks as graphite. The conditions are appropriate for the Akilia Island supracrustal sequence to contain, to date, possibly the oldest known life on Earth.
The Hadean earth contained hellish conditions from at least 4.6 billion years ago (approximate date of earth's origin) until about 4 BYA. Early bombardment from asteroids, meteorites and comets, along with residual high heat from its accretion are just the short list of what the conditions were like, from the outset. Precious few Hadean rocks have been left since geologic "Deep Time" for us to examine for traces of early biological life.
Specimen size: 43mm L X 21mm W X 11mm D
This specimen ships with information, Certificate of Authenticity, tag stand and perky display case.
Photo cube and acrylic base not included.
This is our largest specimen. Obtained in a materials trade with a scientific institution.
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