Cosmic Ray Exposure Age Determinations of Cosmic Spherules from Marine Sediments

1985 ◽  
pp. 179-181
Author(s):  
Kazuo Yamakoshi
Keyword(s):  
Marine Sediments ◽  
Cosmic Ray ◽  
Exposure Age ◽  
Cosmic Spherules ◽  
Cosmic Ray Exposure Age ◽  
Age Determinations

scholarly journals Cosmic Ray Exposure Age Determinations of Cosmic Spherules from Marine Sediments

1985 ◽  
Vol 85 ◽  
pp. 179-181
Author(s):  
Kazuo Yamakoshi
Keyword(s):  
Mass Spectrometry ◽  
Cosmic Ray ◽  
High Energy ◽  
High Energy Accelerator ◽  
Exposure Age ◽  
Cosmic Spherules ◽  
Inner Region ◽  
Exposure Ages ◽  
Cosmic Ray Exposure Age ◽  
Cosmic Ray Exposure Ages

AbstractThe cosmic ray exposure ages of deep sea metalic lie spherules were determined by various methods; low level countings (Ni-59), neutron activation analysis (Mn-53), high energy accelerator mass spectrometry (Be-10, Al-26) and mass spectrometry (K isotopes). The exposure ages of 0.3 - 50 Ma were obtained. According to Poynting-Robertson effect, the starting points (supplying sources) are located at inner region of the orbit of Saturn.

scholarly journals Petrology, geochemistry, and cosmic-ray exposure age of Iherzolitic shergottite Northwest Africa 1950

2005 ◽  
Vol 40 (8) ◽  
pp. 1175-1184 ◽  
Author(s):  
P. GILLET ◽  
J. A. BARRAT ◽  
P. BECK ◽  
B. MARTY ◽  
R. C. GREENWOOD ◽  
...  
Keyword(s):  
Cosmic Ray ◽  
Northwest Africa ◽  
Exposure Age ◽  
Cosmic Ray Exposure Age

scholarly journals Cosmic-ray exposure age and preatmospheric size of the Bunburra Rockhole achondrite

2011 ◽  
Vol 47 (2) ◽  
pp. 186-196 ◽  
Author(s):  
Kees C. WELTEN ◽  
Matthias M. M. MEIER ◽  
Marc W. CAFFEE ◽  
Matthias LAUBENSTEIN ◽  
Kunihiko NISHIZUMI ◽  
...  
Keyword(s):  
Cosmic Ray ◽  
Exposure Age ◽  
Cosmic Ray Exposure Age

Cosmic-ray exposure age of Martian meteorite GRV 99027

2007 ◽  
Vol 50 (10) ◽  
pp. 1521-1524 ◽  
Author(s):  
Ping Kong ◽  
D. Fabel ◽  
R. Brown ◽  
S. Freeman
Keyword(s):  
Cosmic Ray ◽  
Martian Meteorite ◽  
Exposure Age ◽  
Cosmic Ray Exposure Age

Review of asteroid-family and meteorite-type links

2018 ◽  
Vol 14 (A30) ◽  
pp. 9-12 ◽  
Author(s):  
Peter Jenniskens
Keyword(s):  
Source Region ◽  
Cosmic Ray ◽  
Major Axis ◽  
Main Belt ◽  
Semi Major Axis ◽  
Collision Event ◽  
Exposure Age ◽  
Statistical Sense ◽  
Cosmic Ray Exposure Age ◽  
Asteroid Families

AbstractThe materials of large asteroids and asteroid families are sampled by meteorites that fall to Earth. The cosmic ray exposure age of the meteorite identifies the collision event from which that meteorite originated. The inclination of the orbit on which the meteoroid impacted Earth measures the inclination of the source region, while the semi-major axis of the orbit points to the delivery resonance, but only in a statistical sense. To isolate the sources of our meteorites requires multiple documented falls for each cosmic ray exposure peak. So far, only 36 meteorites have been recovered from observed falls. Despite these low numbers, some patterns are emerging that suggest CM chondrites originated from near the 3:1 resonance from a low-inclined source (perhaps the Sulamitis family), LL chondrites came to us from the ν6 resonance (perhaps the Flora family), there is an H chondrite source at high inclination (Phocaea?), and one group of low shock-stage L chondrites originates from the inner main belt. Other possible links are discussed.

Noble gas and cosmic-ray exposure age of Juancheng chondrite

1999 ◽  
Vol 44 (12) ◽  
pp. 1142-1143 ◽  
Author(s):  
Daode Wang ◽  
Ruitian Wang
Keyword(s):  
Noble Gas ◽  
Cosmic Ray ◽  
Exposure Age ◽  
Cosmic Ray Exposure Age
Sign in / Sign up

Export Citation Format

Share Document