地质年代符号大写字母上标中的数字代表什么。

2025-03-26 19:44:03
推荐回答(3个)
回答1:

在第四纪Q中上标:
el
残积物、pd

壤、col
崩积物、dis
撒积物、dp
滑积物、sl
土流堆积物、
dl
坡积物、pl
洪积物、al
冲积物、df
泥石流堆积物、cad
溶洞碎屑堆积物、ca
溶洞化学沉积物、
cal
地下河沉积物、call
地下湖沉积物、cas
泉华、l
湖积物、fl
沼泽堆积物、gl
冰川堆积物、
gfl
冰水堆积物、lgl
冰湖堆积物、fd
冻融堆积物、eol
风积物、ls
黄土、edl
残坡积物、
dpl
坡洪积物、dal
坡冲积物、pal
洪冲积物、apl
冲洪积物、all
冲湖积物、mem
河口堆积、
mla
泻湖沉积物、mfl
滨海沼泽堆积物、mcm
滨岸堆积物、mr
滨岸生物堆积物、
ms
浅海沉积物、md
深海沉积物、pr
成因不明堆积物、vl
火山堆积物、h
人工堆积物

回答2:

表示大写字母所代表年代下的时代细分
例如,q1中,q表示第四纪,距今约200万年。第四纪又份为q1\q2\q3\q4,其中1、2、3、4分别表示该年代的不同时期。如q3表示第四纪中的更新世,q4则表示全新世。

回答3:

是指前面大写字母那个年代下的时代细分。
如Q4、Q3中,Q表示第四纪,距今约200万年,在这200万年中,又份为Q1\Q2\Q3\Q4,如Q3表示第四纪中的更新世,Q4则表示第四纪中的全新世。

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