| C-13-depleted carbon microparticles in > 3700-Ma sea-floor sedimentary rocks from west Greenland |
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| Author(s): Rosing MT |
| Source: SCIENCE Volume: 283 Issue: 5402 Pages: 674-676 Published: JAN 29 1999 |
| Times Cited: 201 References: 26 |
| Abstract: Turbiditic and pelagic sedimentary rocks from the Isua supracrustal belt in west Greenland [more than 3700 million years ago (Ma)] contain reduced carbon that is Likely biogenic. The carbon is present as 2- to 5-micrometer graphite globules and has an isotopic composition of delta(13)C that is about -19 per mil (Pee Dee belemnite standard). These data and the mode of occurrence indicate that the reduced carbon represents biogenic detritus, which was perhaps derived from planktonic organisms. |
| Document Type: Article |
| Language: English |
| Reprint Address: Rosing, MT (reprint author), Geol Museum, Oster Voldgade 5-7, DK-1350 Kobenhavn K, Denmark |
Addresses:
1. Geol Museum, DK-1350 Kobenhavn K, Denmark
2. Danish Lithosphere Ctr, DK-1350 Kobenhavn, Denmark |
| Publisher: AMER ASSOC ADVANCEMENT SCIENCE, 1200 NEW YORK AVE, NW, WASHINGTON, DC 20005 USA |
| Subject Category: Multidisciplinary Sciences |
| IDS Number: 162BC |
| ISSN: 0036-8075 |