Abstract

Table of contents
Plenary Lectures
Award Lecture
Oral Sessions Day1, Day2, Day3
Poster Presentations Day1, Day2, Day3
Workshops
Luncheon Seminar Day 1, Day 2, Day 3
Timetable

Poster Presentations

Day 2: Thursday, May 15　　Poster Room(Gekko)

2P-05　　PDF

Secondary Ion Mass Spectrometry (SHRIMP) U-Pb dating of Chelyabinsk meteorite

(1Osaka Univ., 2Hiroshima Univ., 3Institute of Precambrian Geology and Geochronology)
oMoe Kamioka1, Kentaro Terada1, Hiroshi Hidaka2, Kosuke Kimura2, Sergey Skublov3

On Feburuary 15,2013, a meteorite fell into the area of Chelyabinsk in Russia .The petrographic and chemical analysis of the Chelyabinsk meteorite unambiguously classifies it as an LL5 ordinary chondrite (Galimov et al. 2013). The reported Sm-Nd age of 3.7 Ga and Rb-Sr age of 0.29 Ga suggest that the Chelyabinsk meteorites could have suffered from the secondary event possibly due to shock metamorphism.For further understanding of the thermal history of Chelyabinsk meteorite, we carried out an in-situ U-Pb dating of phosphates of which closure temperatures is high (~600 ℃), using Hiroshima-SHRIMP (Sensitive High-Resolution Ion MicroProbe).