Multiple Choice
A fossil shell is filled with mud.The shell dissolves, leaving an impression of its inside surface on the shell-filling lump of mudstone.What type of fossil is this?
A) an original hard part
B) an internal mould
C) a carbonized impressionist film
D) an external cast
Correct Answer:
Verified
Correct Answer:
Verified
Q153: Nonclastic textures are most common in which
Q154: Shales are distinguished from other mudrocks by
Q155: What is the global carbon cycle?
Q156: During transport, currents of water or air
Q157: The type of diagenesis that occurs in
Q159: Detrital sedimentary rocks are mainly classified (named)on
Q160: What kinds of sediments initially form as
Q161: Shales are usually described as weak because
Q162: What physical and chemical processes transform lignite
Q163: Deltas form in transitional environments.