2億1500万年前の衝突は直径が最大で8km弱の超巨大隕石だった - 九大など
九州大学(九大)、熊本大学、海洋研究開発機構(JAMSTEC)は9月16日、岐阜県坂祝町および大分県津久見市から採取された岩石試料について、白金族元素の1つである原子番号76番の「オスミウム(Os)」の同位体分析を行った結果、およそ2億1500万年前に、 ...
Vocabulary List
ocean
57867
study / research / investigation
75170
development / exploitation
58254
mechanism / organization / organisation
64294
moon
74279
Gifu (pn)
63902
prefecture (of Japan)
75261
town / block / neighbourhood / neighborhood
128653
and / as well as
1527
considerably / greatly / a lot
124116
prefecture (of Japan)
75261
city
90345
picking / collecting / harvesting
86555
rock
63136
sample / test piece
91930
concerning / along / under / per
4777
platinum (Pt)
142673
tribe / clan / band
120874
chemical element
76000
atom
76122
number / series of digits
144813
(one) pair (e.g. of birds) / brace / couple
144803
osmium (Os)
12929
the same rank / the same digit
135937
body
122077
analysis
150964
result / consequence / outcome / effect
74034
about / roughly / as a rule / approximately
156268
10^8 / 100,000,000 / hundred million
52922
10,000 / ten thousand
156842
ago / before (some event) / previously
117076
10^8 / 100,000,000 / hundred million
52922
10,000 / ten thousand
156842
ago / before (some event) / previously
117076
collision / conflict
103902
diameter
129502
greatest / largest / maximum
86383
weakness / the weak / little less than
95791
super- / ultra- / hyper- / very, really (conversational)
128922
huge / gigantic / enormous
67552
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