wisdoman 發表於 29-10-2008 04:33:44

Landforms and endogenetic processes/fault

GEO Normal fault, reverse fault

我唔明normal fault同reverse fault點分 by looking at figures
我只係記住 "反轉左的梯形"在下方 =normal fault,; 相反, "反轉左的梯形"在上方= reverse fault:L
份notes ge definition:
Normal fault
- It is produced by tensional force
-Hanging wall is displaced downward   <-咩係hanging wall (上盤) ?

Reverse fault
- It is produced by compressional force
- Hanging wall is displaced upward
唔明佢definition " hanging wall......." up乜[]
更加睇唔明呢幅圖:'( []
http://www.mss-mllc.com/big5/material/form6/geography/photo/geo6a_16.jpg

[ 本帖最後由 wisdoman 於 2-11-2008 20:00 編輯 ]

Roy 發表於 29-10-2008 16:41:01

oceanic/continental crust<--指地殼
oceanic/continental plate<--指板塊

該地殼如果上面全部都係海洋就係oceanic crust,係地的話就係continental crust

而我們會叫Pacific plate係一個oceanic plate
但就唔會講Pacific plate係一個oceanic crust

adamsteve 發表於 30-10-2008 23:21:05

好似有一個DENSITY係高D 好似係OCEANIC 佢係SIMA...

wisdoman 發表於 2-11-2008 09:40:26

Landforms and endogenetic processes

1. 我們現在的大洲(e.g. 非洲....)會唔會好似Pangaea咁,再break into其他洲?
2: 建設性/破壞性/保守性/ 板塊邊界個d係點界定? 係咪d direction of plate movement係fixed左? 姐係Pacific plate向西move, Nazca Plate向東咁...咁點解d plate movement會fixed左ge?
3. 我想問保守性板塊邊界係點黎? 關唔關convection magma current事? 因為我睇書, 建設性同破壞性板塊邊界都有講magma diverge/converge而形成呢d boundaries, 但保守性板塊邊界就冇講到magma...

Roy 發表於 2-11-2008 12:02:09

1. 我們現在的大洲(e.g. 非洲....)會唔會好似Pangaea咁,再break into其他洲?

要用到幾十萬到幾百萬年歷史ge過程來的
所以,係會的
我地死左幾百萬年後(假設地球仲存在),都會變到同今日唔一樣

就好似而家太平洋愈來愈細,大西洋愈來愈大咁(即係因為一年都郁得唔係好多,所以我地見到ge7大洲同4大洋都無嘜點變樣咁)

wisdoman 發表於 2-11-2008 15:36:13

唔該你[]
可唔可以答下第2條:2: 建設性/破壞性/保守性/ 板塊邊界個d係點界定? 書入而剩係講the result of plate movement
冇講點解個個地方會有plate movement, 其他地方又冇? 另外, 佢又剩係講左d direction of plate movement, e.g. Pacific plate向西move, Nazca Plate向東咁...咁點解d plate 會咁move ?
同埋d plate boundary會唔會增加? 唔知點解我成日有d問題但本書d資料又冇[] 其實我係咪唔應該諗得太深[]

#1加左問題

[ 本帖最後由 wisdoman 於 2-11-2008 20:01 編輯 ]

Roy 發表於 3-11-2008 18:18:18

原帖由 wisdoman 於 2-11-2008 15:36 發表 http://www.nakuz.com/bbs/images/common/back.gif
唔該你[]
可唔可以答下第2條:2: 建設性/破壞性/保守性/ 板塊邊界個d係點界定? 書入而剩係講the result of plate movement
冇講點解個個地方會有plate movement, 其他地方又冇? 另外, 佢又剩係講左d direction of...

你的確諗得太多
點界定?
construtive plate boundary<---2 crusts move apart each other(Divergence)
destructive plate boundary<---2 crust move toward together(convergence)
conservative plate boundary<---2 crust slide laterally along the tear fault

點解有plate movement,就係因為mantle有current
d current係convection ge
所以,呢邊東,咪另外果面向西

西        東
↙ ← ← ← → → → ↘
↓    ↑    ↓
↓    ↑    ↓
↓    ↑    ↓
↘ → → → ← ← ← ↙


hanging wall 就係叫上盤
果個傾角細過90度ge就係的了

芒果熙∼* 發表於 6-11-2008 18:52:19

原帖由 wisdoman 於 2-11-2008 03:36 PM 發表 http://www4.nakuz.com/bbs/images/common/back.gif
唔該你[]
可唔可以答下第2條:2: 建設性/破壞性/保守性/ 板塊邊界個d係點界定? 書入而剩係講the result of plate movement
冇講點解個個地方會有plate movement, 其他地方又冇? 另外, 佢又剩係講左d direction of...

地核的高溫令到接近地核的熔岩溫度上升
熱d既熔岩會向上走再逼返上面比較低溫既熔岩向下走
落到去之後又比地核既高溫燒返熱又向上走
形成左一個cycle..而當上面既板塊係

Roy 發表於 7-11-2008 20:19:55

原帖由 芒果熙∼* 於 6-11-2008 18:52 發表 http://www1.nakuz.com/bbs/images/common/back.gif


地核的高溫令到接近地核的熔岩溫度上升
熱d既熔岩會向上走再逼返上面比較低溫既熔岩向下走
落到去之後又比地核既高溫燒返熱又向上走
形成左一個cycle..而當上面既板塊係

芒果熙∼* 發表於 12-11-2008 16:54:52

原帖由 Roy 於 7-11-2008 08:19 PM 發表 http://www4.nakuz.com/bbs/images/common/back.gif

寶力未老@@
你唔係應該F.6無揀geog?

冇揀..........................(phy chem bio now..)
tas t到死左= =
(離題?)

查實我都唔多記得geog d野..見到記得先答下==
不過題目都唔算係太需要geog既知識..只係convection..

(寶刀未老...?我都未老~~~~)
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