Oldest Komatiite Færinghavn Terrane [84 gm ~ 3.8 Ga]

The Færinghavn Komatiite is a unique specimen, formed from lava flows around 3.8 billion years ago during Earth's Archean Eon. It comes from the remote Færinghavn Terrane in Southwest Greenland, an ancient part of Earth's crust. This rock is a remarkable relic from Earth's early history and is sought after by collectors and geologists. Komatiite is extremely rare, as it formed under intense volcanic activity and high temperatures. Owning a piece of this ancient rock offers a glimpse into a time when Earth’s surface was far more volatile and dynamic.

Geological Significance

Dating back to 3.8 billion years ago, the Færinghavn Komatiite is the oldest known lava rocks on Earth. During the Archean Eon, Earth's mantle was significantly hotter than it is today, which allowed komatiitic lava to flow in a highly fluid state. This characteristic is unique because most modern volcanic rocks are thicker and slower-moving. By studying komatiites, scientists can uncover vital information about the early Earth, such as how the mantle behaved and the kinds of volcanic activity that shaped the planet's surface.

These ancient rocks also reveal clues about the Earth's early atmosphere and oceans. While komatiites formed long before life existed, their interactions with early atmospheric and oceanic conditions can help scientists understand how Earth’s surface evolved to support life. These rocks are also important in the study of other planets. The presence of similar volcanic rocks on celestial bodies like Mars suggests that studying komatiites could help us understand volcanic processes beyond Earth.

Unique Characteristics

• High Magnesium Content: Komatiites are known for their exceptionally high levels of magnesium, much higher than typical volcanic rocks today.
• Extreme Melting Temperatures: Formed at much higher temperatures than any lava seen in modern times, indicating a much hotter mantle.
• Fluid Lava Flows: The low viscosity of komatiites allowed them to spread rapidly across large distances, unlike the slower-moving lava of today.

Specimen Details

Size: 64mm L x 65mm W x 12mm D

Weight: 84.5 grams; Legally collected. In situ photo included. The front face is polished flat to highlight the mineral structure.

What's Included

• Certificate of Authenticity
• Tag, tag stand, and detailed information about komatiite 
• Free "Earth's Oldest Rocks and Oldest Life" geology poster