ALBERT — All Library Books, journals and Electronic Records Telegrafenberg

Hits per page

hit 1 - 1 | 1 hit

Select All Export

Unknown

The age of the carbonates in martian meteorite ALH84001 (1999)

Borg, L. E. ; Shih, C. Y. ; Wiesmann, H. ; [et al.]

In: Other Sources

add to mindlist on the mindlist

Details

Publication Date: 2011-08-24

Description: The age of secondary carbonate mineralization in the martian meteorite ALH84001 was determined to be 3.90 +/- 0.04 billion years by rubidium-strontium (Rb-Sr) dating and 4.04 +/- 0.10 billion years by lead-lead (Pb-Pb) dating. The Rb-Sr and Pb-Pb isochrons are defined by leachates of a mixture of high-graded carbonate (visually estimated as approximately 5 percent), whitlockite (trace), and orthopyroxene (approximately 95 percent). The carbonate formation age is contemporaneous with a period in martian history when the surface is thought to have had flowing water, but also was undergoing heavy bombardment by meteorites. Therefore, this age does not distinguish between aqueous and impact origins for the carbonates.

Keywords: Lunar and Planetary Science and Exploration

Type: Science (ISSN 0036-8075); Volume 286; 5437; 90-4

Format: text

	Location	Call Number	Expected	Availability

Others were also interested in ...

NASA TECHNICAL REPORTS

S·F·X

hit 1 - 1 | 1 hit