下载APP
【简答题】
下图是北美大峡谷的地质剖面图。
A为前寒武系变质岩，发育一系列紧密同斜褶皱并伴生断层；C为单斜构造（岩层），伴有海底火山喷发（γ）；D为中新生界水平岩层；B为水平岩层的底界即古侵蚀面。
试指出该地区发生的主要构造事件（构造发展史）。
参考答案：
参考解析：
刷刷题刷刷变学霸
举一反三
【单选题】工程地质测绘时，沿垂直地层走向直行，所见地层次序是：志留系→奥陶系→寒武系→奥陶系→志留系，这个现象可能反映了下列（）项地质构造。
A.
正断层
B.
逆断层
C.
背斜
D.
向斜
【多选题】油气田地质剖面图是沿某一方向切开的垂直断面图，它可以反映地下__________等地质特征。
A.
构造特征
B.
油气水分布
C.
沉积微相分布
D.
地层厚度及接触关系
【单选题】The Grand Canyon Standing on the rim of the Grand Canyon(大峡谷), gazing across this giant wound in the Earth’’s surface, a visitor might assume that the canyon had been caused by some ancient convulsion...
A.
Astronomy
B.
Botany(植物学)
C.
Geology
D.
Chemistry
【单选题】The Grand Canyon Standing on the rim of the Grand Canyon(大峡谷), gazing across this giant wound in the Earth’’s surface, a visitor might assume that the canyon had been caused by some ancient convulsion...
A.
it was caused by some ancient convulsion
B.
its presence is an embarrassment to the state of Colorado
C.
it looks like an injury on the Earth’s surface
D.
it has caused many visitors to injure themselves