作者kate110548 (雯^o^)
看板b942040XX
標題[課業] 地球歷史小考題目
時間Sat Apr 14 13:31:02 2007
可能可以當重點的參考吧!!
不然課本我真的不想看~~
大家加油~~
Ch5
1. what is the dropstone?
2. why is the fluvial sequence containing coarse to fine
alternating sub-sequences?
3. what is the reason to form the distinct layers in varves?
4. write down possible sedimentary environments, which is
dominated by biogenic sediments?
5. why do we still have sandy deposits in the deep sea?
Do you know where they are? What is the specific name of
this sedimentary environment?
Ch6
1. how are strontium isotopes useful in dating rock?
2. why does a geologic formation not necessarily have an
upper of lower boundary that is the same age everywhere?
3. what is the scientific contribution of event stratigraphy?
4. what factors lead to imperfections in radiometric dating?
Ch8
1. what are the major differences between crust and lithosphere?
2. write down the lines of evidence which support the theory of
continental drift.
3. where can we find volcanism? Why?(answer based on plate tectonics).
Ch9
1. what is molasses? Why does it normally accumulate after flysch?
2. what is the significance of ophiolites?
3. how can mountain chain form without continental collision?
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◆ From: 61.229.68.231
1F：推 mollypp:謝謝你~~~我有幾份不小心都交回去XD 04/14 21:39
2F：推 ShawSean:我每一分都很乖地交回去 XD 04/14 21:40
3F：→ saichaos:怎麼才34塊錢@@? 04/15 13:31
4F：推 will1118:謝謝 XD 04/15 13:41
5F：推 kate110548:課本的量好多= = 樓樓上有種東西叫複製貼上XD 04/15 17:56
6F：推 mollypp:第六章的第一題 原理是什麼呀@@ 04/15 20:41
7F：推 ShawSean:我現在才發現我好像沒拿到第六章的考卷 Orz 04/15 20:50
8F：推 mollypp:我那堂請假呀~~~~~~~~~阿嗚~那到底是啥呀 04/15 21:26
9F：推 ShawSean:看不太懂那題要問的到底是how還是why？ 04/15 21:44
10F：推 mollypp:那關鍵是在他可以定新生代的地層嗎~ 04/15 21:56
11F：推 ShawSean:關鍵在它半衰期很長只能定千萬年以上吧？ 04/15 22:04
12F：推 ShawSean:喔喔，看錯。妳說的應該是對的。 04/15 22:07
13F：推 smayel:Sr的用法類似氧同位素定層 04/15 23:50
14F：→ smayel:之所以在新生代可以用是因為海洋岩芯都在新生代 04/15 23:50
15F：→ smayel:洋底沈積物很難打到5ma之前的 04/15 23:51
16F：推 mollypp:了解了 感謝樓上~~~ 04/16 01:21