【单选题】
两侧岩层向内相向倾斜，中心部分岩层时代较新，两侧岩层依次变老的是___。
A. 向斜
B. 节理
C. 背斜
D. 断层
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答案
A
解析
暂无解析
相关试题
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按断层的两盘相对位移情况，将断层分为下列中的哪几种___。 Ⅰ.正断层 Ⅱ. 逆断层 Ⅲ. 平移断层 Ⅳ. 走向断层 Ⅴ. 倾向断层
A. Ⅰ、Ⅱ、Ⅲ
B. Ⅱ、Ⅲ、Ⅳ
C. Ⅰ、Ⅱ、Ⅳ
D. Ⅲ、Ⅳ、Ⅴ
【单选题】
下面哪一组属于构造和剥蚀作用形成的地貌单元___。
A. 山地、丘陵、剥蚀残山、剥蚀准平原
B. 山地、沙漠、剥蚀准平原、洪积扇
C. 山地、丘陵、构造平原、高原
D. 山地、高原、剥蚀残山、构造土
【单选题】
阶地根据形态特征可分为___。
A. 堆积阶地、侵蚀阶地、基座阶地
B. 侵蚀阶地、埋藏阶地、内叠阶地
C. 基座阶地、堆积阶地、上叠阶地
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现代海岸带由陆地向海洋方向可划分为下列哪三个带___。
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B. 海滩、潮上带、潮间带
C. 水下岸坡、潮下带、海滩
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B. 直立褶曲、平卧褶曲、倾伏褶曲、倒转褶曲
C. 倾斜褶曲、水平褶曲、直立褶曲、倒转褶曲
D. 倾斜褶曲、倾伏褶曲、倒转褶曲、平卧褶曲
【单选题】
某种矿物常发育成六方柱状单晶或晶族，或称致密块状、粒状集合体，无色或乳白色，玻璃光泽，无解理，贝壳状断口呈油脂光泽，硬度为7。此矿物为___。
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【单选题】
矿物表面反光的性质称为光泽，按矿物反光程度的强弱用类比法可将矿物的光泽分为下列哪三类___。
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B. 金属光泽、半金属光泽、金刚光泽
C. 非金属光泽、半金属光泽、金属光泽
D. 半金属光泽、珍珠光泽、玻璃光泽
【单选题】
根据组成沉积岩的物质成分，通常把沉积岩分为哪几类___。
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B. 碎屑岩类、粘土岩类、化学及生物岩类
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D. 碎屑岩类、粘土岩类、生物岩类
【单选题】
火成岩按所含矿物的结晶程度可分为哪几种结构___。
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